[{"day":"08","has_accepted_license":"1","article_processing_charge":"No","keyword":["embroidery","design","directionality","density","image"],"date_published":"2023-05-08T00:00:00Z","article_type":"original","page":"397-409","publication":"Computer Graphics Forum","citation":{"ama":"Liu Z, Piovarci M, Hafner C, Charrondiere R, Bickel B. Directionality-aware design of embroidery patterns. Computer Graphics Forum. 2023;42(2):397-409. doi:10.1111/cgf.14770 ","apa":"Liu, Z., Piovarci, M., Hafner, C., Charrondiere, R., & Bickel, B. (2023). Directionality-aware design of embroidery patterns. Computer Graphics Forum. Saarbrucken, Germany: Wiley. https://doi.org/10.1111/cgf.14770 ","ieee":"Z. Liu, M. Piovarci, C. Hafner, R. Charrondiere, and B. Bickel, “Directionality-aware design of embroidery patterns,” Computer Graphics Forum, vol. 42, no. 2. Wiley, pp. 397–409, 2023.","ista":"Liu Z, Piovarci M, Hafner C, Charrondiere R, Bickel B. 2023. Directionality-aware design of embroidery patterns. Computer Graphics Forum. 42(2), 397–409.","short":"Z. Liu, M. Piovarci, C. Hafner, R. Charrondiere, B. Bickel, Computer Graphics Forum 42 (2023) 397–409.","mla":"Liu, Zhenyuan, et al. “Directionality-Aware Design of Embroidery Patterns.” Computer Graphics Forum, vol. 42, no. 2, Wiley, 2023, pp. 397–409, doi:10.1111/cgf.14770 .","chicago":"Liu, Zhenyuan, Michael Piovarci, Christian Hafner, Raphael Charrondiere, and Bernd Bickel. “Directionality-Aware Design of Embroidery Patterns.” Computer Graphics Forum. Wiley, 2023. https://doi.org/10.1111/cgf.14770 ."},"abstract":[{"lang":"eng","text":"Embroidery is a long-standing and high-quality approach to making logos and images on textiles. Nowadays, it can also be performed via automated machines that weave threads with high spatial accuracy. A characteristic feature of the appearance of the threads is a high degree of anisotropy. The anisotropic behavior is caused by depositing thin but long strings of thread. As a result, the stitched patterns convey both color and direction. Artists leverage this anisotropic behavior to enhance pure color images with textures, illusions of motion, or depth cues. However, designing colorful embroidery patterns with prescribed directionality is a challenging task, one usually requiring an expert designer. In this work, we propose an interactive algorithm that generates machine-fabricable embroidery patterns from multi-chromatic images equipped with user-specified directionality fields.We cast the problem of finding a stitching pattern into vector theory. To find a suitable stitching pattern, we extract sources and sinks from the divergence field of the vector field extracted from the input and use them to trace streamlines. We further optimize the streamlines to guarantee a smooth and connected stitching pattern. The generated patterns approximate the color distribution constrained by the directionality field. To allow for further artistic control, the trade-off between color match and directionality match can be interactively explored via an intuitive slider. We showcase our approach by fabricating several embroidery paths."}],"issue":"2","type":"journal_article","file":[{"checksum":"4c188c2be4745467a8790bbf5d6491aa","success":1,"date_updated":"2023-05-16T08:28:37Z","date_created":"2023-05-16T08:28:37Z","relation":"main_file","file_id":"12974","file_size":24003702,"content_type":"application/pdf","creator":"mpiovarc","access_level":"open_access","file_name":"Zhenyuan2023.pdf"}],"oa_version":"Published Version","ddc":["004"],"title":"Directionality-aware design of embroidery patterns","status":"public","intvolume":" 42","_id":"12972","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","month":"05","publication_identifier":{"issn":["1467-8659"]},"language":[{"iso":"eng"}],"conference":{"name":"EG: Eurographics","end_date":"2023-05-12","start_date":"2023-05-08","location":"Saarbrucken, Germany"},"doi":"10.1111/cgf.14770 ","quality_controlled":"1","isi":1,"project":[{"name":"Perception-Aware Appearance Fabrication","_id":"eb901961-77a9-11ec-83b8-f5c883a62027","grant_number":"M03319"},{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020"}],"tmp":{"name":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)","legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode","short":"CC BY-NC-ND (4.0)","image":"/images/cc_by_nc_nd.png"},"oa":1,"external_id":{"isi":["001000062600033"]},"license":"https://creativecommons.org/licenses/by-nc-nd/4.0/","file_date_updated":"2023-05-16T08:28:37Z","ec_funded":1,"date_updated":"2023-08-01T14:47:05Z","date_created":"2023-05-16T08:47:25Z","volume":42,"author":[{"first_name":"Zhenyuan","last_name":"Liu","id":"70f0d7cf-ae65-11ec-a14f-89dfc5505b19","orcid":"0000-0001-9200-5690","full_name":"Liu, Zhenyuan"},{"first_name":"Michael","last_name":"Piovarci","id":"62E473F4-5C99-11EA-A40E-AF823DDC885E","full_name":"Piovarci, Michael"},{"full_name":"Hafner, Christian","first_name":"Christian","last_name":"Hafner","id":"400429CC-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Raphael","last_name":"Charrondiere","id":"a3a24133-2cc7-11ec-be88-8ddaf6f464b1","full_name":"Charrondiere, Raphael"},{"full_name":"Bickel, Bernd","first_name":"Bernd","last_name":"Bickel","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385"}],"publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"Wiley","year":"2023","acknowledgement":"This work was supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement No 715767 – MATERIALIZABLE), and FWF Lise Meitner (Grant M 3319). We thank the anonymous reviewers for their insightful feedback; Solal Pirelli, Shardul Chiplunkar, and Paola Mejia for proofreading; everyone in the visual computing group at ISTA for inspiring lunch and coffee breaks; Thibault Tricard for help producing the results of Phasor Noise."},{"date_published":"2023-07-23T00:00:00Z","publication":"SIGGRAPH 2023 Conference Proceedings","citation":{"chicago":"Tojo, Kenji, Ariel Shamir, Bernd Bickel, and Nobuyuki Umetani. “Stealth Shaper: Reflectivity Optimization as Surface Stylization.” In SIGGRAPH 2023 Conference Proceedings. Association for Computing Machinery, 2023. https://doi.org/10.1145/3588432.3591542.","short":"K. Tojo, A. Shamir, B. Bickel, N. Umetani, in:, SIGGRAPH 2023 Conference Proceedings, Association for Computing Machinery, 2023.","mla":"Tojo, Kenji, et al. “Stealth Shaper: Reflectivity Optimization as Surface Stylization.” SIGGRAPH 2023 Conference Proceedings, 20, Association for Computing Machinery, 2023, doi:10.1145/3588432.3591542.","ieee":"K. Tojo, A. Shamir, B. Bickel, and N. Umetani, “Stealth shaper: Reflectivity optimization as surface stylization,” in SIGGRAPH 2023 Conference Proceedings, Los Angeles, CA, United States, 2023.","apa":"Tojo, K., Shamir, A., Bickel, B., & Umetani, N. (2023). Stealth shaper: Reflectivity optimization as surface stylization. In SIGGRAPH 2023 Conference Proceedings. Los Angeles, CA, United States: Association for Computing Machinery. https://doi.org/10.1145/3588432.3591542","ista":"Tojo K, Shamir A, Bickel B, Umetani N. 2023. Stealth shaper: Reflectivity optimization as surface stylization. SIGGRAPH 2023 Conference Proceedings. SIGGRAPH: Computer Graphics and Interactive Techniques Conference, 20.","ama":"Tojo K, Shamir A, Bickel B, Umetani N. Stealth shaper: Reflectivity optimization as surface stylization. In: SIGGRAPH 2023 Conference Proceedings. Association for Computing Machinery; 2023. doi:10.1145/3588432.3591542"},"day":"23","article_processing_charge":"No","scopus_import":"1","oa_version":"Preprint","_id":"14241","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","status":"public","title":"Stealth shaper: Reflectivity optimization as surface stylization","abstract":[{"lang":"eng","text":"We present a technique to optimize the reflectivity of a surface while preserving its overall shape. The naïve optimization of the mesh vertices using the gradients of reflectivity simulations results in undesirable distortion. In contrast, our robust formulation optimizes the surface normal as an independent variable that bridges the reflectivity term with differential rendering, and the regularization term with as-rigid-as-possible elastic energy. We further adaptively subdivide the input mesh to improve the convergence. Consequently, our method can minimize the retroreflectivity of a wide range of input shapes, resulting in sharply creased shapes ubiquitous among stealth aircraft and Sci-Fi vehicles. Furthermore, by changing the reward for the direction of the outgoing light directions, our method can be applied to other reflectivity design tasks, such as the optimization of architectural walls to concentrate light in a specific region. We have tested the proposed method using light-transport simulations and real-world 3D-printed objects."}],"type":"conference","conference":{"end_date":"2023-08-10","start_date":"2023-08-06","location":"Los Angeles, CA, United States","name":"SIGGRAPH: Computer Graphics and Interactive Techniques Conference"},"doi":"10.1145/3588432.3591542","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2305.05944"}],"oa":1,"external_id":{"arxiv":["2305.05944"]},"quality_controlled":"1","month":"07","publication_identifier":{"isbn":["9798400701597"]},"author":[{"last_name":"Tojo","first_name":"Kenji","full_name":"Tojo, Kenji"},{"first_name":"Ariel","last_name":"Shamir","full_name":"Shamir, Ariel"},{"last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","full_name":"Bickel, Bernd"},{"first_name":"Nobuyuki","last_name":"Umetani","full_name":"Umetani, Nobuyuki"}],"date_updated":"2023-09-05T07:22:03Z","date_created":"2023-08-27T22:01:17Z","acknowledgement":"The authors would like to thank Yuki Koyama and Takeo Igarashi for early discussions, and Yuta Yaguchi for support in 3D printing. This research is partially supported by the Israel Science Foundation grant number 1390/19.\r\n","year":"2023","publication_status":"published","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"article_number":"20"},{"language":[{"iso":"eng"}],"doi":"10.1007/s11263-023-01899-3","date_published":"2023-10-31T00:00:00Z","article_type":"original","quality_controlled":"1","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1007/s11263-023-01899-3"}],"oa":1,"citation":{"ieee":"P. Rao et al., “A deeper analysis of volumetric relightiable faces,” International Journal of Computer Vision. Springer Nature, 2023.","apa":"Rao, P., Mallikarjun, B. R., Fox, G., Weyrich, T., Bickel, B., Pfister, H., … Elgharib, M. (2023). A deeper analysis of volumetric relightiable faces. International Journal of Computer Vision. Springer Nature. https://doi.org/10.1007/s11263-023-01899-3","ista":"Rao P, Mallikarjun BR, Fox G, Weyrich T, Bickel B, Pfister H, Matusik W, Zhan F, Tewari A, Theobalt C, Elgharib M. 2023. A deeper analysis of volumetric relightiable faces. International Journal of Computer Vision.","ama":"Rao P, Mallikarjun BR, Fox G, et al. A deeper analysis of volumetric relightiable faces. International Journal of Computer Vision. 2023. doi:10.1007/s11263-023-01899-3","chicago":"Rao, Pramod, B. R. Mallikarjun, Gereon Fox, Tim Weyrich, Bernd Bickel, Hanspeter Pfister, Wojciech Matusik, et al. “A Deeper Analysis of Volumetric Relightiable Faces.” International Journal of Computer Vision. Springer Nature, 2023. https://doi.org/10.1007/s11263-023-01899-3.","short":"P. Rao, B.R. Mallikarjun, G. Fox, T. Weyrich, B. Bickel, H. Pfister, W. Matusik, F. Zhan, A. Tewari, C. Theobalt, M. Elgharib, International Journal of Computer Vision (2023).","mla":"Rao, Pramod, et al. “A Deeper Analysis of Volumetric Relightiable Faces.” International Journal of Computer Vision, Springer Nature, 2023, doi:10.1007/s11263-023-01899-3."},"publication":"International Journal of Computer Vision","article_processing_charge":"Yes (via OA deal)","publication_identifier":{"eissn":["1573-1405"],"issn":["0920-5691"]},"month":"10","day":"31","scopus_import":"1","oa_version":"Published Version","date_updated":"2023-11-06T08:52:30Z","date_created":"2023-11-05T23:00:54Z","author":[{"full_name":"Rao, Pramod","first_name":"Pramod","last_name":"Rao"},{"full_name":"Mallikarjun, B. R.","last_name":"Mallikarjun","first_name":"B. R."},{"last_name":"Fox","first_name":"Gereon","full_name":"Fox, Gereon"},{"full_name":"Weyrich, Tim","last_name":"Weyrich","first_name":"Tim"},{"full_name":"Bickel, Bernd","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel"},{"full_name":"Pfister, Hanspeter","last_name":"Pfister","first_name":"Hanspeter"},{"last_name":"Matusik","first_name":"Wojciech","full_name":"Matusik, Wojciech"},{"full_name":"Zhan, Fangneng","last_name":"Zhan","first_name":"Fangneng"},{"last_name":"Tewari","first_name":"Ayush","full_name":"Tewari, Ayush"},{"first_name":"Christian","last_name":"Theobalt","full_name":"Theobalt, Christian"},{"full_name":"Elgharib, Mohamed","last_name":"Elgharib","first_name":"Mohamed"}],"department":[{"_id":"BeBi"}],"publisher":"Springer Nature","title":"A deeper analysis of volumetric relightiable faces","publication_status":"epub_ahead","status":"public","_id":"14488","year":"2023","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","acknowledgement":"Open Access funding enabled and organized by Projekt DEAL.","abstract":[{"text":"Portrait viewpoint and illumination editing is an important problem with several applications in VR/AR, movies, and photography. Comprehensive knowledge of geometry and illumination is critical for obtaining photorealistic results. Current methods are unable to explicitly model in 3D while handling both viewpoint and illumination editing from a single image. In this paper, we propose VoRF, a novel approach that can take even a single portrait image as input and relight human heads under novel illuminations that can be viewed from arbitrary viewpoints. VoRF represents a human head as a continuous volumetric field and learns a prior model of human heads using a coordinate-based MLP with individual latent spaces for identity and illumination. The prior model is learned in an auto-decoder manner over a diverse class of head shapes and appearances, allowing VoRF to generalize to novel test identities from a single input image. Additionally, VoRF has a reflectance MLP that uses the intermediate features of the prior model for rendering One-Light-at-A-Time (OLAT) images under novel views. We synthesize novel illuminations by combining these OLAT images with target environment maps. Qualitative and quantitative evaluations demonstrate the effectiveness of VoRF for relighting and novel view synthesis, even when applied to unseen subjects under uncontrolled illumination. This work is an extension of Rao et al. (VoRF: Volumetric Relightable Faces 2022). We provide extensive evaluation and ablative studies of our model and also provide an application, where any face can be relighted using textual input.","lang":"eng"}],"type":"journal_article"},{"project":[{"name":"Computational Discovery of Numerical Algorithms for Animation and Simulation of Natural Phenomena","_id":"34bc2376-11ca-11ed-8bc3-9a3b3961a088","grant_number":"101045083"}],"quality_controlled":"1","oa":1,"language":[{"iso":"eng"}],"doi":"10.1145/3605389","publication_identifier":{"issn":["0730-0301","1557-7368"]},"month":"10","publisher":"Association for Computing Machinery","department":[{"_id":"GradSch"},{"_id":"ChWo"},{"_id":"BeBi"}],"publication_status":"published","acknowledgement":"The authors thank Mina Konaković Luković and Michael Foshey for their early contributions to this project, David Palmer and Paul Zhang for their insightful discussions about minimal surfaces and the CSCM, Julian Panetta for providing the Elastic Textures code, and Hannes Hergeth for his feedback and support. We also thank our user study participants and anonymous reviewers.\r\nThis material is based upon work supported by the National Science Foundation\r\n(NSF) Graduate Research Fellowship under Grant No. 2141064; the MIT Morningside\r\nAcademy for Design Fellowship; the Defense Advanced Research Projects Agency\r\n(DARPA) Grant No. FA8750-20-C-0075; the ERC Consolidator Grant No. 101045083,\r\n“CoDiNA: Computational Discovery of Numerical Algorithms for Animation and Simulation of Natural Phenomena”; and the NewSat project, which is co-funded by the Operational Program for Competitiveness and Internationalisation (COMPETE2020), Portugal 2020, the European Regional Development Fund (ERDF), and the Portuguese Foundation for Science and Technology (FTC) under the MIT Portugal program.","year":"2023","volume":42,"date_created":"2023-11-29T15:02:03Z","date_updated":"2023-12-04T08:09:05Z","author":[{"first_name":"Liane","last_name":"Makatura","full_name":"Makatura, Liane"},{"full_name":"Wang, Bohan","first_name":"Bohan","last_name":"Wang"},{"full_name":"Chen, Yi-Lu","id":"0b467602-dbcd-11ea-9d1d-ed480aa46b70","last_name":"Chen","first_name":"Yi-Lu"},{"full_name":"Deng, Bolei","last_name":"Deng","first_name":"Bolei"},{"orcid":"0000-0001-6646-5546","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","last_name":"Wojtan","first_name":"Christopher J","full_name":"Wojtan, Christopher J"},{"full_name":"Bickel, Bernd","first_name":"Bernd","last_name":"Bickel","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385"},{"full_name":"Matusik, Wojciech","first_name":"Wojciech","last_name":"Matusik"}],"article_number":"168","file_date_updated":"2023-12-04T08:04:14Z","article_type":"original","citation":{"chicago":"Makatura, Liane, Bohan Wang, Yi-Lu Chen, Bolei Deng, Chris Wojtan, Bernd Bickel, and Wojciech Matusik. “Procedural Metamaterials: A Unified Procedural Graph for Metamaterial Design.” ACM Transactions on Graphics. Association for Computing Machinery, 2023. https://doi.org/10.1145/3605389.","mla":"Makatura, Liane, et al. “Procedural Metamaterials: A Unified Procedural Graph for Metamaterial Design.” ACM Transactions on Graphics, vol. 42, no. 5, 168, Association for Computing Machinery, 2023, doi:10.1145/3605389.","short":"L. Makatura, B. Wang, Y.-L. Chen, B. Deng, C. Wojtan, B. Bickel, W. Matusik, ACM Transactions on Graphics 42 (2023).","ista":"Makatura L, Wang B, Chen Y-L, Deng B, Wojtan C, Bickel B, Matusik W. 2023. Procedural metamaterials: A unified procedural graph for metamaterial design. ACM Transactions on Graphics. 42(5), 168.","ieee":"L. Makatura et al., “Procedural metamaterials: A unified procedural graph for metamaterial design,” ACM Transactions on Graphics, vol. 42, no. 5. Association for Computing Machinery, 2023.","apa":"Makatura, L., Wang, B., Chen, Y.-L., Deng, B., Wojtan, C., Bickel, B., & Matusik, W. (2023). Procedural metamaterials: A unified procedural graph for metamaterial design. ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3605389","ama":"Makatura L, Wang B, Chen Y-L, et al. Procedural metamaterials: A unified procedural graph for metamaterial design. ACM Transactions on Graphics. 2023;42(5). doi:10.1145/3605389"},"publication":"ACM Transactions on Graphics","date_published":"2023-10-01T00:00:00Z","keyword":["Computer Graphics and Computer-Aided Design"],"has_accepted_license":"1","article_processing_charge":"Yes (in subscription journal)","day":"01","intvolume":" 42","title":"Procedural metamaterials: A unified procedural graph for metamaterial design","ddc":["531","006"],"status":"public","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"14628","oa_version":"Published Version","file":[{"date_updated":"2023-11-29T15:16:01Z","date_created":"2023-11-29T15:16:01Z","checksum":"0192f597d7a2ceaf89baddfd6190d4c8","success":1,"relation":"main_file","file_id":"14630","file_size":95467870,"content_type":"application/zip","creator":"yichen","file_name":"tog-22-0089-File004.zip","access_level":"open_access"},{"creator":"yichen","content_type":"application/zip","file_size":103731880,"file_name":"tog-22-0089-File005.zip","access_level":"open_access","date_updated":"2023-11-29T15:16:01Z","date_created":"2023-11-29T15:16:01Z","success":1,"checksum":"7fb024963be81933494f38de191e4710","file_id":"14631","relation":"main_file"},{"file_id":"14638","relation":"main_file","success":1,"checksum":"b7d6829ce396e21cac9fae0ec7130a6b","date_created":"2023-12-04T08:04:14Z","date_updated":"2023-12-04T08:04:14Z","access_level":"open_access","file_name":"2023_ACMToG_Makatura.pdf","creator":"dernst","content_type":"application/pdf","file_size":57067476}],"type":"journal_article","issue":"5","abstract":[{"lang":"eng","text":"We introduce a compact, intuitive procedural graph representation for cellular metamaterials, which are small-scale, tileable structures that can be architected to exhibit many useful material properties. Because the structures’ “architectures” vary widely—with elements such as beams, thin shells, and solid bulks—it is difficult to explore them using existing representations. Generic approaches like voxel grids are versatile, but it is cumbersome to represent and edit individual structures; architecture-specific approaches address these issues, but are incompatible with one another. By contrast, our procedural graph succinctly represents the construction process for any structure using a simple skeleton annotated with spatially varying thickness. To express the highly constrained triply periodic minimal surfaces (TPMS) in this manner, we present the first fully automated version of the conjugate surface construction method, which allows novices to create complex TPMS from intuitive input. We demonstrate our representation’s expressiveness, accuracy, and compactness by constructing a wide range of established structures and hundreds of novel structures with diverse architectures and material properties. We also conduct a user study to verify our representation’s ease-of-use and ability to expand engineers’ capacity for exploration."}]},{"year":"2023","acknowledgement":"This work is graciously supported by FWF Lise Meitner (Grant M 3319). Kang Liao sincerely thank Emiliano Luci, Chunyu Lin, and Yao Zhao for their huge support.","publication_status":"published","publisher":"IEEE","department":[{"_id":"BeBi"}],"author":[{"full_name":"Liao, Kang","first_name":"Kang","last_name":"Liao"},{"full_name":"Tricard, Thibault","last_name":"Tricard","first_name":"Thibault"},{"full_name":"Piovarci, Michael","last_name":"Piovarci","first_name":"Michael","orcid":"0000-0002-5062-4474","id":"62E473F4-5C99-11EA-A40E-AF823DDC885E"},{"last_name":"Seidel","first_name":"Hans-Peter","full_name":"Seidel, Hans-Peter"},{"full_name":"Babaei, Vahid","last_name":"Babaei","first_name":"Vahid"}],"date_created":"2023-05-16T09:14:09Z","date_updated":"2023-12-13T11:20:00Z","volume":2023,"file_date_updated":"2023-05-16T09:12:05Z","oa":1,"external_id":{"isi":["001048371104068"]},"quality_controlled":"1","isi":1,"project":[{"name":"Perception-Aware Appearance Fabrication","grant_number":"M03319","_id":"eb901961-77a9-11ec-83b8-f5c883a62027"}],"conference":{"name":"ICRA: International Conference on Robotics and Automation","start_date":"2023-05-29","location":"London, United Kingdom","end_date":"2023-06-02"},"doi":"10.1109/ICRA48891.2023.10160465","language":[{"iso":"eng"}],"month":"07","publication_identifier":{"issn":["1050-4729"],"eisbn":["9798350323658"]},"_id":"12976","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","status":"public","title":"Learning deposition policies for fused multi-material 3D printing","ddc":["004"],"intvolume":" 2023","oa_version":"Submitted Version","file":[{"relation":"main_file","file_id":"12977","checksum":"daeaa67124777d88487f933ea3f77164","success":1,"date_updated":"2023-05-16T09:12:05Z","date_created":"2023-05-16T09:12:05Z","access_level":"open_access","file_name":"Liao2023.pdf","file_size":5367986,"content_type":"application/pdf","creator":"mpiovarc"}],"type":"conference","abstract":[{"lang":"eng","text":"3D printing based on continuous deposition of materials, such as filament-based 3D printing, has seen widespread adoption thanks to its versatility in working with a wide range of materials. An important shortcoming of this type of technology is its limited multi-material capabilities. While there are simple hardware designs that enable multi-material printing in principle, the required software is heavily underdeveloped. A typical hardware design fuses together individual materials fed into a single chamber from multiple inlets before they are deposited. This design, however, introduces a time delay between the intended material mixture and its actual deposition. In this work, inspired by diverse path planning research in robotics, we show that this mechanical challenge can be addressed via improved printer control. We propose to formulate the search for optimal multi-material printing policies in a reinforcement\r\nlearning setup. We put forward a simple numerical deposition model that takes into account the non-linear material mixing and delayed material deposition. To validate our system we focus on color fabrication, a problem known for its strict requirements for varying material mixtures at a high spatial frequency. We demonstrate that our learned control policy outperforms state-of-the-art hand-crafted algorithms."}],"publication":"2023 IEEE International Conference on Robotics and Automation","citation":{"ieee":"K. Liao, T. Tricard, M. Piovarci, H.-P. Seidel, and V. Babaei, “Learning deposition policies for fused multi-material 3D printing,” in 2023 IEEE International Conference on Robotics and Automation, London, United Kingdom, 2023, vol. 2023, pp. 12345–12352.","apa":"Liao, K., Tricard, T., Piovarci, M., Seidel, H.-P., & Babaei, V. (2023). Learning deposition policies for fused multi-material 3D printing. In 2023 IEEE International Conference on Robotics and Automation (Vol. 2023, pp. 12345–12352). London, United Kingdom: IEEE. https://doi.org/10.1109/ICRA48891.2023.10160465","ista":"Liao K, Tricard T, Piovarci M, Seidel H-P, Babaei V. 2023. Learning deposition policies for fused multi-material 3D printing. 2023 IEEE International Conference on Robotics and Automation. ICRA: International Conference on Robotics and Automation vol. 2023, 12345–12352.","ama":"Liao K, Tricard T, Piovarci M, Seidel H-P, Babaei V. Learning deposition policies for fused multi-material 3D printing. In: 2023 IEEE International Conference on Robotics and Automation. Vol 2023. IEEE; 2023:12345-12352. doi:10.1109/ICRA48891.2023.10160465","chicago":"Liao, Kang, Thibault Tricard, Michael Piovarci, Hans-Peter Seidel, and Vahid Babaei. “Learning Deposition Policies for Fused Multi-Material 3D Printing.” In 2023 IEEE International Conference on Robotics and Automation, 2023:12345–52. IEEE, 2023. https://doi.org/10.1109/ICRA48891.2023.10160465.","short":"K. Liao, T. Tricard, M. Piovarci, H.-P. Seidel, V. Babaei, in:, 2023 IEEE International Conference on Robotics and Automation, IEEE, 2023, pp. 12345–12352.","mla":"Liao, Kang, et al. “Learning Deposition Policies for Fused Multi-Material 3D Printing.” 2023 IEEE International Conference on Robotics and Automation, vol. 2023, IEEE, 2023, pp. 12345–52, doi:10.1109/ICRA48891.2023.10160465."},"page":"12345-12352","date_published":"2023-07-04T00:00:00Z","scopus_import":"1","keyword":["reinforcement learning","deposition","control","color","multi-filament"],"day":"04","article_processing_charge":"No","has_accepted_license":"1"},{"oa":1,"external_id":{"arxiv":["2201.02374"],"isi":["001018739600002"]},"main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2201.02374","open_access":"1"}],"isi":1,"quality_controlled":"1","doi":"10.1145/3575859","language":[{"iso":"eng"}],"month":"03","publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368"]},"year":"2023","acknowledgement":"This work was supported in part by grants from the NSFC (61972232), Science and Technology Program of Shenzhen, China (CJGJZD20200617102202007). ","publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"Association for Computing Machinery","author":[{"first_name":"Fanchao","last_name":"Zhong","full_name":"Zhong, Fanchao"},{"full_name":"Xu, Yonglai","first_name":"Yonglai","last_name":"Xu"},{"full_name":"Zhao, Haisen","first_name":"Haisen","last_name":"Zhao","id":"fb7f793a-80d1-11eb-8869-d56e5b2a8ff4","orcid":"0000-0002-6389-1045"},{"full_name":"Lu, Lin","first_name":"Lin","last_name":"Lu"}],"date_updated":"2023-12-13T11:34:59Z","date_created":"2023-07-23T22:01:13Z","volume":42,"article_number":"26","publication":"ACM Transactions on Graphics","citation":{"chicago":"Zhong, Fanchao, Yonglai Xu, Haisen Zhao, and Lin Lu. “As-Continuous-As-Possible Extrusion-Based Fabrication of Surface Models.” ACM Transactions on Graphics. Association for Computing Machinery, 2023. https://doi.org/10.1145/3575859.","mla":"Zhong, Fanchao, et al. “As-Continuous-As-Possible Extrusion-Based Fabrication of Surface Models.” ACM Transactions on Graphics, vol. 42, no. 3, 26, Association for Computing Machinery, 2023, doi:10.1145/3575859.","short":"F. Zhong, Y. Xu, H. Zhao, L. Lu, ACM Transactions on Graphics 42 (2023).","ista":"Zhong F, Xu Y, Zhao H, Lu L. 2023. As-Continuous-As-Possible extrusion-based fabrication of surface models. ACM Transactions on Graphics. 42(3), 26.","apa":"Zhong, F., Xu, Y., Zhao, H., & Lu, L. (2023). As-Continuous-As-Possible extrusion-based fabrication of surface models. ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3575859","ieee":"F. Zhong, Y. Xu, H. Zhao, and L. Lu, “As-Continuous-As-Possible extrusion-based fabrication of surface models,” ACM Transactions on Graphics, vol. 42, no. 3. Association for Computing Machinery, 2023.","ama":"Zhong F, Xu Y, Zhao H, Lu L. As-Continuous-As-Possible extrusion-based fabrication of surface models. ACM Transactions on Graphics. 2023;42(3). doi:10.1145/3575859"},"article_type":"original","date_published":"2023-03-17T00:00:00Z","scopus_import":"1","day":"17","article_processing_charge":"No","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"13265","status":"public","title":"As-Continuous-As-Possible extrusion-based fabrication of surface models","intvolume":" 42","oa_version":"Preprint","type":"journal_article","abstract":[{"text":"In this study, we propose a computational framework for optimizing the continuity of the toolpath in fabricating surface models on an extrusion-based 3D printer. Toolpath continuity is a critical issue that influences both the quality and the efficiency of extrusion-based fabrication. Transfer moves lead to rough and bumpy surfaces, where this phenomenon worsens for materials with large viscosity, like clay. The effects of continuity on the surface models are even more severe in terms of the quality of the surface and the stability of the model. We introduce a criterion called the one–path patch (OPP) to represent a patch on the surface of the shell that can be traversed along one path by considering the constraints on fabrication. We study the properties of the OPPs and their merging operations to propose a bottom-up OPP merging procedure to decompose the given shell surface into a minimal number of OPPs, and to generate the “as-continuous-as-possible” (ACAP) toolpath. Furthermore, we augment the path planning algorithm with a curved-layer printing scheme that reduces staircase defects and improves the continuity of the toolpath by connecting multiple segments. We evaluated the ACAP algorithm on ceramic and thermoplastic materials, and the results showed that it improves the fabrication of surface models in terms of both efficiency and surface quality.","lang":"eng"}],"issue":"3"},{"type":"journal_article","abstract":[{"lang":"eng","text":"Three-dimensional (3D) reconstruction of living brain tissue down to an individual synapse level would create opportunities for decoding the dynamics and structure–function relationships of the brain’s complex and dense information processing network; however, this has been hindered by insufficient 3D resolution, inadequate signal-to-noise ratio and prohibitive light burden in optical imaging, whereas electron microscopy is inherently static. Here we solved these challenges by developing an integrated optical/machine-learning technology, LIONESS (live information-optimized nanoscopy enabling saturated segmentation). This leverages optical modifications to stimulated emission depletion microscopy in comprehensively, extracellularly labeled tissue and previous information on sample structure via machine learning to simultaneously achieve isotropic super-resolution, high signal-to-noise ratio and compatibility with living tissue. This allows dense deep-learning-based instance segmentation and 3D reconstruction at a synapse level, incorporating molecular, activity and morphodynamic information. LIONESS opens up avenues for studying the dynamic functional (nano-)architecture of living brain tissue."}],"intvolume":" 20","status":"public","title":"Dense 4D nanoscale reconstruction of living brain tissue","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"13267","oa_version":"Published Version","scopus_import":"1","article_processing_charge":"Yes","day":"01","page":"1256-1265","article_type":"original","citation":{"short":"P. Velicky, E. Miguel Villalba, J.M. Michalska, J. Lyudchik, D. Wei, Z. Lin, J. Watson, J. Troidl, J. Beyer, Y. Ben Simon, C.M. Sommer, W. Jahr, A. Cenameri, J. Broichhagen, S.G.N. Grant, P.M. Jonas, G. Novarino, H. Pfister, B. Bickel, J.G. Danzl, Nature Methods 20 (2023) 1256–1265.","mla":"Velicky, Philipp, et al. “Dense 4D Nanoscale Reconstruction of Living Brain Tissue.” Nature Methods, vol. 20, Springer Nature, 2023, pp. 1256–65, doi:10.1038/s41592-023-01936-6.","chicago":"Velicky, Philipp, Eder Miguel Villalba, Julia M Michalska, Julia Lyudchik, Donglai Wei, Zudi Lin, Jake Watson, et al. “Dense 4D Nanoscale Reconstruction of Living Brain Tissue.” Nature Methods. Springer Nature, 2023. https://doi.org/10.1038/s41592-023-01936-6.","ama":"Velicky P, Miguel Villalba E, Michalska JM, et al. Dense 4D nanoscale reconstruction of living brain tissue. Nature Methods. 2023;20:1256-1265. doi:10.1038/s41592-023-01936-6","apa":"Velicky, P., Miguel Villalba, E., Michalska, J. M., Lyudchik, J., Wei, D., Lin, Z., … Danzl, J. G. (2023). Dense 4D nanoscale reconstruction of living brain tissue. Nature Methods. Springer Nature. https://doi.org/10.1038/s41592-023-01936-6","ieee":"P. Velicky et al., “Dense 4D nanoscale reconstruction of living brain tissue,” Nature Methods, vol. 20. Springer Nature, pp. 1256–1265, 2023.","ista":"Velicky P, Miguel Villalba E, Michalska JM, Lyudchik J, Wei D, Lin Z, Watson J, Troidl J, Beyer J, Ben Simon Y, Sommer CM, Jahr W, Cenameri A, Broichhagen J, Grant SGN, Jonas PM, Novarino G, Pfister H, Bickel B, Danzl JG. 2023. Dense 4D nanoscale reconstruction of living brain tissue. Nature Methods. 20, 1256–1265."},"publication":"Nature Methods","date_published":"2023-08-01T00:00:00Z","ec_funded":1,"publisher":"Springer Nature","department":[{"_id":"PeJo"},{"_id":"GaNo"},{"_id":"BeBi"},{"_id":"JoDa"},{"_id":"Bio"}],"publication_status":"published","pmid":1,"acknowledgement":"We thank J. Vorlaufer, N. Agudelo and A. Wartak for microscope maintenance and troubleshooting, C. Kreuzinger and A. Freeman for technical assistance, M. Šuplata for hardware control support and M. Cunha dos Santos for initial exploration of software. We\r\nthank P. Henderson for advice on deep-learning training and M. Sixt, S. Boyd and T. Weiss for discussions and critical reading of the manuscript. L. Lavis (Janelia Research Campus) generously provided the JF585-HaloTag ligand. We acknowledge expert support by IST\r\nAustria’s scientific computing, imaging and optics, preclinical, library and laboratory support facilities and by the Miba machine shop. We gratefully acknowledge funding by the following sources: Austrian Science Fund (F.W.F.) grant no. I3600-B27 (J.G.D.), grant no. DK W1232\r\n(J.G.D. and J.M.M.) and grant no. Z 312-B27, Wittgenstein award (P.J.); the Gesellschaft für Forschungsförderung NÖ grant no. LSC18-022 (J.G.D.); an ISTA Interdisciplinary project grant (J.G.D. and B.B.); the European Union’s Horizon 2020 research and innovation programme,\r\nMarie-Skłodowska Curie grant 665385 (J.M.M. and J.L.); the European Union’s Horizon 2020 research and innovation programme, European Research Council grant no. 715767, MATERIALIZABLE (B.B.); grant no. 715508, REVERSEAUTISM (G.N.); grant no. 695568, SYNNOVATE (S.G.N.G.); and grant no. 692692, GIANTSYN (P.J.); the Simons\r\nFoundation Autism Research Initiative grant no. 529085 (S.G.N.G.); the Wellcome Trust Technology Development grant no. 202932 (S.G.N.G.); the Marie Skłodowska-Curie Actions Individual Fellowship no. 101026635 under the EU Horizon 2020 program (J.F.W.);\r\nthe Human Frontier Science Program postdoctoral fellowship LT000557/2018 (W.J.); and the National Science Foundation grant no. IIS-1835231 (H.P.) and NCS-FO-2124179 (H.P.).","year":"2023","volume":20,"date_created":"2023-07-23T22:01:13Z","date_updated":"2024-01-10T08:37:48Z","related_material":{"record":[{"id":"12817","status":"public","relation":"research_data"},{"id":"14770","relation":"shorter_version","status":"public"}],"link":[{"url":"https://github.com/danzllab/LIONESS","relation":"software"}]},"author":[{"full_name":"Velicky, Philipp","id":"39BDC62C-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-2340-7431","first_name":"Philipp","last_name":"Velicky"},{"full_name":"Miguel Villalba, Eder","orcid":"0000-0001-5665-0430","id":"3FB91342-F248-11E8-B48F-1D18A9856A87","last_name":"Miguel Villalba","first_name":"Eder"},{"id":"443DB6DE-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-3862-1235","first_name":"Julia M","last_name":"Michalska","full_name":"Michalska, Julia M"},{"full_name":"Lyudchik, Julia","last_name":"Lyudchik","first_name":"Julia","id":"46E28B80-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Donglai","last_name":"Wei","full_name":"Wei, Donglai"},{"first_name":"Zudi","last_name":"Lin","full_name":"Lin, Zudi"},{"full_name":"Watson, Jake","first_name":"Jake","last_name":"Watson","id":"63836096-4690-11EA-BD4E-32803DDC885E","orcid":"0000-0002-8698-3823"},{"full_name":"Troidl, Jakob","first_name":"Jakob","last_name":"Troidl"},{"full_name":"Beyer, Johanna","last_name":"Beyer","first_name":"Johanna"},{"first_name":"Yoav","last_name":"Ben Simon","id":"43DF3136-F248-11E8-B48F-1D18A9856A87","full_name":"Ben Simon, Yoav"},{"orcid":"0000-0003-1216-9105","id":"4DF26D8C-F248-11E8-B48F-1D18A9856A87","last_name":"Sommer","first_name":"Christoph M","full_name":"Sommer, Christoph M"},{"full_name":"Jahr, Wiebke","last_name":"Jahr","first_name":"Wiebke","id":"425C1CE8-F248-11E8-B48F-1D18A9856A87"},{"id":"9ac8f577-2357-11eb-997a-e566c5550886","last_name":"Cenameri","first_name":"Alban","full_name":"Cenameri, Alban"},{"full_name":"Broichhagen, Johannes","first_name":"Johannes","last_name":"Broichhagen"},{"full_name":"Grant, Seth G.N.","last_name":"Grant","first_name":"Seth G.N."},{"first_name":"Peter M","last_name":"Jonas","id":"353C1B58-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-5001-4804","full_name":"Jonas, Peter M"},{"orcid":"0000-0002-7673-7178","id":"3E57A680-F248-11E8-B48F-1D18A9856A87","last_name":"Novarino","first_name":"Gaia","full_name":"Novarino, Gaia"},{"full_name":"Pfister, Hanspeter","first_name":"Hanspeter","last_name":"Pfister"},{"full_name":"Bickel, Bernd","first_name":"Bernd","last_name":"Bickel","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385"},{"full_name":"Danzl, Johann G","last_name":"Danzl","first_name":"Johann G","orcid":"0000-0001-8559-3973","id":"42EFD3B6-F248-11E8-B48F-1D18A9856A87"}],"publication_identifier":{"issn":["1548-7091"],"eissn":["1548-7105"]},"month":"08","project":[{"grant_number":"I03600","_id":"265CB4D0-B435-11E9-9278-68D0E5697425","name":"Optical control of synaptic function via adhesion molecules","call_identifier":"FWF"},{"name":"Molecular Drug Targets","call_identifier":"FWF","grant_number":"W1232-B24","_id":"2548AE96-B435-11E9-9278-68D0E5697425"},{"name":"The Wittgenstein Prize","call_identifier":"FWF","grant_number":"Z00312","_id":"25C5A090-B435-11E9-9278-68D0E5697425"},{"name":"High content imaging to decode human immune cell interactions in health and allergic disease","_id":"23889792-32DE-11EA-91FC-C7463DDC885E"},{"_id":"2564DBCA-B435-11E9-9278-68D0E5697425","grant_number":"665385","call_identifier":"H2020","name":"International IST Doctoral Program"},{"call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767"},{"_id":"25444568-B435-11E9-9278-68D0E5697425","grant_number":"715508","call_identifier":"H2020","name":"Probing the Reversibility of Autism Spectrum Disorders by Employing in vivo and in vitro Models"},{"name":"Biophysics and circuit function of a giant cortical glumatergic synapse","call_identifier":"H2020","_id":"25B7EB9E-B435-11E9-9278-68D0E5697425","grant_number":"692692"},{"_id":"fc2be41b-9c52-11eb-aca3-faa90aa144e9","grant_number":"101026635","call_identifier":"H2020","name":"Synaptic computations of the hippocampal CA3 circuitry"},{"name":"High-speed 3D-nanoscopy to study the role of adhesion during 3D cell migration","grant_number":"LT00057","_id":"2668BFA0-B435-11E9-9278-68D0E5697425"}],"quality_controlled":"1","isi":1,"external_id":{"isi":["001025621500001"],"pmid":["37429995"]},"main_file_link":[{"url":"https://doi.org/10.1038/s41592-023-01936-6","open_access":"1"}],"oa":1,"language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"ScienComp"},{"_id":"Bio"},{"_id":"PreCl"},{"_id":"E-Lib"},{"_id":"LifeSc"},{"_id":"M-Shop"}],"doi":"10.1038/s41592-023-01936-6"},{"abstract":[{"lang":"eng","text":"A faithful reproduction of gloss is inherently difficult because of the limited dynamic range, peak luminance, and 3D capabilities of display devices. This work investigates how the display capabilities affect gloss appearance with respect to a real-world reference object. To this end, we employ an accurate imaging pipeline to achieve a perceptual gloss match between a virtual and real object presented side-by-side on an augmented-reality high-dynamic-range (HDR) stereoscopic display, which has not been previously attained to this extent. Based on this precise gloss reproduction, we conduct a series of gloss matching experiments to study how gloss perception degrades based on individual factors: object albedo, display luminance, dynamic range, stereopsis, and tone mapping. We support the study with a detailed analysis of individual factors, followed by an in-depth discussion on the observed perceptual effects. Our experiments demonstrate that stereoscopic presentation has a limited effect on the gloss matching task on our HDR display. However, both reduced luminance and dynamic range of the display reduce the perceived gloss. This means that the visual system cannot compensate for the changes in gloss appearance across luminance (lack of gloss constancy), and the tone mapping operator should be carefully selected when reproducing gloss on a low dynamic range (LDR) display."}],"type":"conference","file":[{"file_id":"14823","relation":"main_file","success":1,"checksum":"8abe27432ed222b50d1af9b3388db1b0","date_updated":"2024-01-17T08:33:06Z","date_created":"2024-01-17T08:33:06Z","access_level":"open_access","file_name":"2023_SA_Chen.pdf","creator":"dernst","content_type":"application/pdf","file_size":95967451}],"oa_version":"Published Version","ddc":["000"],"status":"public","title":"The effect of display capabilities on the gloss consistency between real and virtual objects","_id":"14798","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","has_accepted_license":"1","article_processing_charge":"Yes (in subscription journal)","day":"10","scopus_import":"1","date_published":"2023-12-10T00:00:00Z","citation":{"ama":"Chen B, Jindal A, Piovarci M, et al. The effect of display capabilities on the gloss consistency between real and virtual objects. In: Proceedings of the SIGGRAPH Asia 2023 Conference. Association for Computing Machinery; 2023. doi:10.1145/3610548.3618226","ista":"Chen B, Jindal A, Piovarci M, Wang C, Seidel HP, Didyk P, Myszkowski K, Serrano A, Mantiuk RK. 2023. The effect of display capabilities on the gloss consistency between real and virtual objects. Proceedings of the SIGGRAPH Asia 2023 Conference. SIGGRAPH: Computer Graphics and Interactive Techniques Conference, 90.","ieee":"B. Chen et al., “The effect of display capabilities on the gloss consistency between real and virtual objects,” in Proceedings of the SIGGRAPH Asia 2023 Conference, Sydney, Australia, 2023.","apa":"Chen, B., Jindal, A., Piovarci, M., Wang, C., Seidel, H. P., Didyk, P., … Mantiuk, R. K. (2023). The effect of display capabilities on the gloss consistency between real and virtual objects. In Proceedings of the SIGGRAPH Asia 2023 Conference. Sydney, Australia: Association for Computing Machinery. https://doi.org/10.1145/3610548.3618226","mla":"Chen, Bin, et al. “The Effect of Display Capabilities on the Gloss Consistency between Real and Virtual Objects.” Proceedings of the SIGGRAPH Asia 2023 Conference, 90, Association for Computing Machinery, 2023, doi:10.1145/3610548.3618226.","short":"B. Chen, A. Jindal, M. Piovarci, C. Wang, H.P. Seidel, P. Didyk, K. Myszkowski, A. Serrano, R.K. Mantiuk, in:, Proceedings of the SIGGRAPH Asia 2023 Conference, Association for Computing Machinery, 2023.","chicago":"Chen, Bin, Akshay Jindal, Michael Piovarci, Chao Wang, Hans Peter Seidel, Piotr Didyk, Karol Myszkowski, Ana Serrano, and Rafał K. Mantiuk. “The Effect of Display Capabilities on the Gloss Consistency between Real and Virtual Objects.” In Proceedings of the SIGGRAPH Asia 2023 Conference. Association for Computing Machinery, 2023. https://doi.org/10.1145/3610548.3618226."},"publication":"Proceedings of the SIGGRAPH Asia 2023 Conference","file_date_updated":"2024-01-17T08:33:06Z","article_number":"90","date_updated":"2024-01-17T08:38:35Z","date_created":"2024-01-14T23:00:57Z","author":[{"last_name":"Chen","first_name":"Bin","full_name":"Chen, Bin"},{"first_name":"Akshay","last_name":"Jindal","full_name":"Jindal, Akshay"},{"full_name":"Piovarci, Michael","first_name":"Michael","last_name":"Piovarci","id":"62E473F4-5C99-11EA-A40E-AF823DDC885E","orcid":"0000-0002-5062-4474"},{"full_name":"Wang, Chao","first_name":"Chao","last_name":"Wang"},{"full_name":"Seidel, Hans Peter","last_name":"Seidel","first_name":"Hans Peter"},{"full_name":"Didyk, Piotr","first_name":"Piotr","last_name":"Didyk"},{"last_name":"Myszkowski","first_name":"Karol","full_name":"Myszkowski, Karol"},{"full_name":"Serrano, Ana","last_name":"Serrano","first_name":"Ana"},{"full_name":"Mantiuk, Rafał K.","last_name":"Mantiuk","first_name":"Rafał K."}],"department":[{"_id":"BeBi"}],"publisher":"Association for Computing Machinery","publication_status":"published","year":"2023","acknowledgement":"This work is supported by FWF Lise Meitner (Grant M 3319), Spanish Agencia Estatal de Investigación (project PID2022-141539NBI00), European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement\r\nN◦ 725253–EyeCode), Swiss National Science Foundation (Grant no. 200502), and academic gifts from Meta. We thank Dmitry Lubyako and Ali Özgür Yöntem for building the turntable for our experiment.","publication_identifier":{"isbn":["9798400703157"]},"month":"12","language":[{"iso":"eng"}],"doi":"10.1145/3610548.3618226","conference":{"location":"Sydney, Australia","start_date":"2023-12-12","end_date":"2023-12-15","name":"SIGGRAPH: Computer Graphics and Interactive Techniques Conference"},"project":[{"name":"Perception-Aware Appearance Fabrication","_id":"eb901961-77a9-11ec-83b8-f5c883a62027","grant_number":"M03319"}],"quality_controlled":"1","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1},{"date_published":"2023-07-26T00:00:00Z","citation":{"mla":"Freire, Marco, et al. “PCBend: Light up Your 3D Shapes with Foldable Circuit Boards.” Transactions on Graphics, vol. 42, no. 4, 142, Association for Computing Machinery, 2023, doi:10.1145/3592411.","short":"M. Freire, M. Bhargava, C. Schreck, P.-A. Hugron, B. Bickel, S. Lefebvre, Transactions on Graphics 42 (2023).","chicago":"Freire, Marco, Manas Bhargava, Camille Schreck, Pierre-Alexandre Hugron, Bernd Bickel, and Sylvain Lefebvre. “PCBend: Light up Your 3D Shapes with Foldable Circuit Boards.” Transactions on Graphics. Association for Computing Machinery, 2023. https://doi.org/10.1145/3592411.","ama":"Freire M, Bhargava M, Schreck C, Hugron P-A, Bickel B, Lefebvre S. PCBend: Light up your 3D shapes with foldable circuit boards. Transactions on Graphics. 2023;42(4). doi:10.1145/3592411","ista":"Freire M, Bhargava M, Schreck C, Hugron P-A, Bickel B, Lefebvre S. 2023. PCBend: Light up your 3D shapes with foldable circuit boards. Transactions on Graphics. 42(4), 142.","ieee":"M. Freire, M. Bhargava, C. Schreck, P.-A. Hugron, B. Bickel, and S. Lefebvre, “PCBend: Light up your 3D shapes with foldable circuit boards,” Transactions on Graphics, vol. 42, no. 4. Association for Computing Machinery, 2023.","apa":"Freire, M., Bhargava, M., Schreck, C., Hugron, P.-A., Bickel, B., & Lefebvre, S. (2023). PCBend: Light up your 3D shapes with foldable circuit boards. Transactions on Graphics. Los Angeles, CA, United States: Association for Computing Machinery. https://doi.org/10.1145/3592411"},"publication":"Transactions on Graphics","article_type":"original","has_accepted_license":"1","article_processing_charge":"No","day":"26","keyword":["PCB design and layout","Mesh geometry models"],"oa_version":"Submitted Version","file":[{"date_created":"2023-06-19T11:02:23Z","date_updated":"2023-06-19T11:02:23Z","success":1,"checksum":"a0b0ba3b36f43a94388e8824613d812a","file_id":"13156","relation":"main_file","creator":"dernst","content_type":"application/pdf","file_size":78940724,"file_name":"2023_ACMToG_Freire.pdf","access_level":"open_access"},{"content_type":"application/pdf","file_size":34345905,"creator":"dernst","file_name":"2023_ACMToG_SuppMaterial_Freire.pdf","access_level":"open_access","date_updated":"2023-06-20T12:20:51Z","date_created":"2023-06-20T12:20:51Z","checksum":"b9206bbb67af82df49b7e7cdbde3410c","success":1,"relation":"main_file","file_id":"13157"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"13049","intvolume":" 42","status":"public","ddc":["006"],"title":"PCBend: Light up your 3D shapes with foldable circuit boards","issue":"4","abstract":[{"text":"We propose a computational design approach for covering a surface with individually addressable RGB LEDs, effectively forming a low-resolution surface screen. To achieve a low-cost and scalable approach, we propose creating designs from flat PCB panels bent in-place along the surface of a 3D printed core. Working with standard rigid PCBs enables the use of\r\nestablished PCB manufacturing services, allowing the fabrication of designs with several hundred LEDs. \r\nOur approach optimizes the PCB geometry for folding, and then jointly optimizes the LED packing, circuit and routing, solving a challenging layout problem under strict manufacturing requirements. Unlike paper, PCBs cannot bend beyond a certain point without breaking. Therefore, we introduce parametric cut patterns acting as hinges, designed to allow bending while remaining compact. To tackle the joint optimization of placement, circuit and routing, we propose a specialized algorithm that splits the global problem into one sub-problem per triangle, which is then individually solved.\r\nOur technique generates PCB blueprints in a completely automated way. After being fabricated by a PCB manufacturing service, the boards are bent and glued by the user onto the 3D printed support. We demonstrate our technique on a range of physical models and virtual examples, creating intricate surface light patterns from hundreds of LEDs.","lang":"eng"}],"type":"journal_article","doi":"10.1145/3592411","conference":{"location":"Los Angeles, CA, United States","start_date":"2023-08-06","end_date":"2023-08-10","name":"SIGGRAPH: Computer Graphics and Interactive Techniques Conference"},"language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"M-Shop"}],"external_id":{"isi":["001044671300108"]},"oa":1,"project":[{"_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767","call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling"}],"quality_controlled":"1","isi":1,"publication_identifier":{"eissn":["1557-7368"],"issn":["0730-0301"]},"month":"07","author":[{"last_name":"Freire","first_name":"Marco","full_name":"Freire, Marco"},{"first_name":"Manas","last_name":"Bhargava","id":"FF8FA64C-AA6A-11E9-99AD-50D4E5697425","orcid":"0009-0007-6138-6890","full_name":"Bhargava, Manas"},{"full_name":"Schreck, Camille","id":"2B14B676-F248-11E8-B48F-1D18A9856A87","last_name":"Schreck","first_name":"Camille"},{"last_name":"Hugron","first_name":"Pierre-Alexandre","full_name":"Hugron, Pierre-Alexandre"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Lefebvre","first_name":"Sylvain","full_name":"Lefebvre, Sylvain"}],"volume":42,"date_created":"2023-05-22T08:37:04Z","date_updated":"2024-01-29T10:30:49Z","year":"2023","acknowledgement":"We thank the reviewers for the valuable feedback. We also thank the Miba Machine Shop at ISTA, PCBWay, and PragoBoard for helping us with fabrication and assembly. This project was supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 715767 – MATERIALIZABLE).","department":[{"_id":"GradSch"},{"_id":"BeBi"}],"publisher":"Association for Computing Machinery","publication_status":"published","ec_funded":1,"file_date_updated":"2023-06-20T12:20:51Z","article_number":"142"},{"publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368"]},"month":"07","external_id":{"isi":["001044671300033"]},"oa":1,"project":[{"_id":"eb901961-77a9-11ec-83b8-f5c883a62027","grant_number":"M03319","name":"Perception-Aware Appearance Fabrication"}],"isi":1,"quality_controlled":"1","doi":"10.1145/3592432","conference":{"end_date":"2023-08-10","location":"Los Angeles, CA, United States","start_date":"2023-08-06","name":"SIGGRAPH: Computer Graphics and Interactive Techniques Conference"},"language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"M-Shop"}],"article_number":"67","file_date_updated":"2023-05-16T09:38:25Z","acknowledgement":"We thank Todor Asenov and the Miba Machine Shop for their help in assembling the tattoo machine and manufacturing the substrates. We thank Geysler Rodrigues for the insightful discussions on tattooing practices from a professional artist's perspective. We thank Maria Fernanda Portugal for sharing a doctor's perspective on medical applications of tattoos. This work is graciously supported by the FWF Lise Meitner (Grant M 3319).","year":"2023","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"publication_status":"published","author":[{"orcid":"0000-0002-5062-4474","id":"62E473F4-5C99-11EA-A40E-AF823DDC885E","last_name":"Piovarci","first_name":"Michael","full_name":"Piovarci, Michael"},{"full_name":"Chapiro, Alexandre","last_name":"Chapiro","first_name":"Alexandre"},{"orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","last_name":"Bickel","first_name":"Bernd","full_name":"Bickel, Bernd"}],"volume":42,"date_updated":"2024-01-29T10:27:23Z","date_created":"2023-05-16T09:39:14Z","keyword":["appearance","modeling","reproduction","tattoo","skin color","gamut mapping","ink-optimization","prosthetic"],"article_processing_charge":"No","has_accepted_license":"1","day":"26","citation":{"chicago":"Piovarci, Michael, Alexandre Chapiro, and Bernd Bickel. “Skin-Screen: A Computational Fabrication Framework for Color Tattoos.” Transactions on Graphics. Association for Computing Machinery, 2023. https://doi.org/10.1145/3592432.","short":"M. Piovarci, A. Chapiro, B. Bickel, Transactions on Graphics 42 (2023).","mla":"Piovarci, Michael, et al. “Skin-Screen: A Computational Fabrication Framework for Color Tattoos.” Transactions on Graphics, vol. 42, no. 4, 67, Association for Computing Machinery, 2023, doi:10.1145/3592432.","ieee":"M. Piovarci, A. Chapiro, and B. Bickel, “Skin-Screen: A computational fabrication framework for color tattoos,” Transactions on Graphics, vol. 42, no. 4. Association for Computing Machinery, 2023.","apa":"Piovarci, M., Chapiro, A., & Bickel, B. (2023). Skin-Screen: A computational fabrication framework for color tattoos. Transactions on Graphics. Los Angeles, CA, United States: Association for Computing Machinery. https://doi.org/10.1145/3592432","ista":"Piovarci M, Chapiro A, Bickel B. 2023. Skin-Screen: A computational fabrication framework for color tattoos. Transactions on Graphics. 42(4), 67.","ama":"Piovarci M, Chapiro A, Bickel B. Skin-Screen: A computational fabrication framework for color tattoos. Transactions on Graphics. 2023;42(4). doi:10.1145/3592432"},"publication":"Transactions on Graphics","article_type":"original","date_published":"2023-07-26T00:00:00Z","type":"journal_article","issue":"4","abstract":[{"text":"Tattoos are a highly popular medium, with both artistic and medical applications. Although the mechanical process of tattoo application has evolved historically, the results are reliant on the artisanal skill of the artist. This can be especially challenging for some skin tones, or in cases where artists lack experience. We provide the first systematic overview of tattooing as a computational fabrication technique. We built an automated tattooing rig and a recipe for the creation of silicone sheets mimicking realistic skin tones, which allowed us to create an accurate model predicting tattoo appearance. This enables several exciting applications including tattoo previewing, color retargeting, novel ink spectra optimization, color-accurate prosthetics, and more.","lang":"eng"}],"_id":"12984","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","intvolume":" 42","ddc":["004"],"status":"public","title":"Skin-Screen: A computational fabrication framework for color tattoos","file":[{"date_updated":"2023-05-16T09:38:25Z","date_created":"2023-05-16T09:38:25Z","success":1,"checksum":"5f0a6867689e025a661bd0b4fd90b821","file_id":"12985","relation":"main_file","creator":"mpiovarc","file_size":30817343,"content_type":"application/pdf","file_name":"Piovarci2023.pdf","access_level":"open_access"}],"oa_version":"Submitted Version"},{"has_accepted_license":"1","article_processing_charge":"No","day":"23","keyword":["color","gloss","perception","color compensation","color management"],"date_published":"2023-07-23T00:00:00Z","citation":{"short":"J. Condor, M. Piovarci, B. Bickel, P. Didyk, in:, SIGGRAPH ’23 Conference Proceedings, Association for Computing Machinery, 2023.","mla":"Condor, Jorge, et al. “Gloss-Aware Color Correction for 3D Printing.” SIGGRAPH ’23 Conference Proceedings, 21, Association for Computing Machinery, 2023, doi:10.1145/3588432.3591546.","chicago":"Condor, Jorge, Michael Piovarci, Bernd Bickel, and Piotr Didyk. “Gloss-Aware Color Correction for 3D Printing.” In SIGGRAPH ’23 Conference Proceedings. Association for Computing Machinery, 2023. https://doi.org/10.1145/3588432.3591546.","ama":"Condor J, Piovarci M, Bickel B, Didyk P. Gloss-aware color correction for 3D printing. In: SIGGRAPH ’23 Conference Proceedings. Association for Computing Machinery; 2023. doi:10.1145/3588432.3591546","apa":"Condor, J., Piovarci, M., Bickel, B., & Didyk, P. (2023). Gloss-aware color correction for 3D printing. In SIGGRAPH ’23 Conference Proceedings. Los Angeles, CA, United States: Association for Computing Machinery. https://doi.org/10.1145/3588432.3591546","ieee":"J. Condor, M. Piovarci, B. Bickel, and P. Didyk, “Gloss-aware color correction for 3D printing,” in SIGGRAPH ’23 Conference Proceedings, Los Angeles, CA, United States, 2023.","ista":"Condor J, Piovarci M, Bickel B, Didyk P. 2023. Gloss-aware color correction for 3D printing. SIGGRAPH ’23 Conference Proceedings. SIGGRAPH: Computer Graphics and Interactive Techniques Conference, 21."},"publication":"SIGGRAPH ’23 Conference Proceedings","abstract":[{"lang":"eng","text":"Color and gloss are fundamental aspects of surface appearance. State-of-the-art fabrication techniques can manipulate both properties of the printed 3D objects. However, in the context of appearance reproduction, perceptual aspects of color and gloss are usually handled separately, even though previous perceptual studies suggest their interaction. Our work is motivated by previous studies demonstrating a perceived color shift due to a change in the object's gloss, i.e., two samples with the same color but different surface gloss appear as they have different colors. In this paper, we conduct new experiments which support this observation and provide insights into the magnitude and direction of the perceived color change. We use the observations as guidance to design a new method that estimates and corrects the color shift enabling the fabrication of objects with the same perceived color but different surface gloss. We formulate the problem as an optimization procedure solved using differentiable rendering. We evaluate the effectiveness of our method in perceptual experiments with 3D objects fabricated using a multi-material 3D printer and demonstrate potential applications. "}],"type":"conference","file":[{"relation":"main_file","file_id":"12983","date_created":"2023-05-16T09:32:50Z","date_updated":"2023-05-16T09:32:50Z","checksum":"84a437739af5d46507928939b20c0c28","success":1,"file_name":"Condor2023_supplemental.pdf","access_level":"open_access","content_type":"application/pdf","file_size":42323971,"creator":"mpiovarc"},{"file_id":"14893","relation":"main_file","success":1,"checksum":"0f5c8b242e8e7c153c04888c4d0c6f37","date_created":"2024-01-29T10:14:10Z","date_updated":"2024-01-29T10:14:10Z","access_level":"open_access","file_name":"2023_Siggraph_Condor.pdf","creator":"dernst","file_size":26079404,"content_type":"application/pdf"}],"oa_version":"Published Version","_id":"12979","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","status":"public","title":"Gloss-aware color correction for 3D printing","ddc":["004"],"publication_identifier":{"isbn":["9798400701597"]},"month":"07","doi":"10.1145/3588432.3591546","conference":{"name":"SIGGRAPH: Computer Graphics and Interactive Techniques Conference","location":"Los Angeles, CA, United States","start_date":"2023-08-06","end_date":"2023-08-10"},"language":[{"iso":"eng"}],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"external_id":{"isi":["001117690500021"]},"project":[{"name":"Perception-Aware Appearance Fabrication","_id":"eb901961-77a9-11ec-83b8-f5c883a62027","grant_number":"M03319"}],"quality_controlled":"1","isi":1,"file_date_updated":"2024-01-29T10:14:10Z","article_number":"21","author":[{"full_name":"Condor, Jorge","last_name":"Condor","first_name":"Jorge"},{"full_name":"Piovarci, Michael","orcid":"0000-0002-5062-4474","id":"62E473F4-5C99-11EA-A40E-AF823DDC885E","last_name":"Piovarci","first_name":"Michael"},{"orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","last_name":"Bickel","first_name":"Bernd","full_name":"Bickel, Bernd"},{"full_name":"Didyk, Piotr","last_name":"Didyk","first_name":"Piotr"}],"date_updated":"2024-02-28T12:52:04Z","date_created":"2023-05-16T09:34:13Z","acknowledgement":"We thank Matthew S Zurawski for the 3D model of the car speed shape. This research has been supported by the Swiss National Science Foundation (SNSF, Grant 200502) and the FWF Lise Meitner (Grant M 3319).","year":"2023","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"publication_status":"published"},{"oa_version":"Published Version","file":[{"date_created":"2023-05-11T10:43:20Z","date_updated":"2023-12-08T23:30:04Z","checksum":"cc2094e92fa27000b70eb4bfb76d6b5a","embargo":"2023-12-07","file_id":"12942","relation":"main_file","creator":"chafner","file_size":50714445,"content_type":"application/pdf","file_name":"thesis-hafner-2023may11-a2b.pdf","access_level":"open_access"},{"date_updated":"2023-12-08T23:30:04Z","date_created":"2023-05-11T10:43:44Z","checksum":"a6b51334be2b81672357b1549afab40c","relation":"source_file","file_id":"12943","content_type":"application/pdf","file_size":265319,"creator":"chafner","embargo_to":"open_access","file_name":"thesis-release-form.pdf","access_level":"closed"}],"_id":"12897","user_id":"400429CC-F248-11E8-B48F-1D18A9856A87","ddc":["516","004","518","531"],"title":"Inverse shape design with parametric representations: Kirchhoff Rods and parametric surface models","status":"public","abstract":[{"lang":"eng","text":"Inverse design problems in fabrication-aware shape optimization are typically solved on discrete representations such as polygonal meshes. This thesis argues that there are benefits to treating these problems in the same domain as human designers, namely, the parametric one. One reason is that discretizing a parametric model usually removes the capability of making further manual changes to the design, because the human intent is captured by the shape parameters. Beyond this, knowledge about a design problem can sometimes reveal a structure that is present in a smooth representation, but is fundamentally altered by discretizing. In this case, working in the parametric domain may even simplify the optimization task. We present two lines of research that explore both of these aspects of fabrication-aware shape optimization on parametric representations.\r\n\r\nThe first project studies the design of plane elastic curves and Kirchhoff rods, which are common mathematical models for describing the deformation of thin elastic rods such as beams, ribbons, cables, and hair. Our main contribution is a characterization of all curved shapes that can be attained by bending and twisting elastic rods having a stiffness that is allowed to vary across the length. Elements like these can be manufactured using digital fabrication devices such as 3d printers and digital cutters, and have applications in free-form architecture and soft robotics.\r\n\r\nWe show that the family of curved shapes that can be produced this way admits geometric description that is concise and computationally convenient. In the case of plane curves, the geometric description is intuitive enough to allow a designer to determine whether a curved shape is physically achievable by visual inspection alone. We also present shape optimization algorithms that convert a user-defined curve in the plane or in three dimensions into the geometry of an elastic rod that will naturally deform to follow this curve when its endpoints are attached to a support structure. Implemented in an interactive software design tool, the rod geometry is generated in real time as the user edits a curve and enables fast prototyping. \r\n\r\nThe second project tackles the problem of general-purpose shape optimization on CAD models using a novel variant of the extended finite element method (XFEM). Our goal is the decoupling between the simulation mesh and the CAD model, so no geometry-dependent meshing or remeshing needs to be performed when the CAD parameters change during optimization. This is achieved by discretizing the embedding space of the CAD model, and using a new high-accuracy numerical integration method to enable XFEM on free-form elements bounded by the parametric surface patches of the model. Our simulation is differentiable from the CAD parameters to the simulation output, which enables us to use off-the-shelf gradient-based optimization procedures. The result is a method that fits seamlessly into the CAD workflow because it works on the same representation as the designer, enabling the alternation of manual editing and fabrication-aware optimization at will."}],"type":"dissertation","alternative_title":["ISTA Thesis"],"date_published":"2023-05-05T00:00:00Z","citation":{"mla":"Hafner, Christian. Inverse Shape Design with Parametric Representations: Kirchhoff Rods and Parametric Surface Models. Institute of Science and Technology Austria, 2023, doi:10.15479/at:ista:12897.","short":"C. Hafner, Inverse Shape Design with Parametric Representations: Kirchhoff Rods and Parametric Surface Models, Institute of Science and Technology Austria, 2023.","chicago":"Hafner, Christian. “Inverse Shape Design with Parametric Representations: Kirchhoff Rods and Parametric Surface Models.” Institute of Science and Technology Austria, 2023. https://doi.org/10.15479/at:ista:12897.","ama":"Hafner C. Inverse shape design with parametric representations: Kirchhoff Rods and parametric surface models. 2023. doi:10.15479/at:ista:12897","ista":"Hafner C. 2023. Inverse shape design with parametric representations: Kirchhoff Rods and parametric surface models. Institute of Science and Technology Austria.","ieee":"C. Hafner, “Inverse shape design with parametric representations: Kirchhoff Rods and parametric surface models,” Institute of Science and Technology Austria, 2023.","apa":"Hafner, C. (2023). Inverse shape design with parametric representations: Kirchhoff Rods and parametric surface models. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:12897"},"page":"180","day":"05","article_processing_charge":"No","has_accepted_license":"1","author":[{"full_name":"Hafner, Christian","id":"400429CC-F248-11E8-B48F-1D18A9856A87","last_name":"Hafner","first_name":"Christian"}],"related_material":{"record":[{"id":"9817","status":"public","relation":"part_of_dissertation"},{"id":"7117","status":"public","relation":"part_of_dissertation"},{"status":"public","relation":"dissertation_contains","id":"13188"}]},"date_created":"2023-05-05T10:40:14Z","date_updated":"2024-01-29T10:47:51Z","year":"2023","publication_status":"published","department":[{"_id":"GradSch"},{"_id":"BeBi"}],"publisher":"Institute of Science and Technology Austria","file_date_updated":"2023-12-08T23:30:04Z","ec_funded":1,"doi":"10.15479/at:ista:12897","supervisor":[{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"}],"degree_awarded":"PhD","acknowledged_ssus":[{"_id":"M-Shop"}],"language":[{"iso":"eng"}],"oa":1,"project":[{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020"}],"month":"05","publication_identifier":{"isbn":["978-3-99078-031-2"],"issn":["2663-337X"]}},{"article_number":"171","file_date_updated":"2023-07-04T08:11:28Z","ec_funded":1,"year":"2023","acknowledgement":"We thank the anonymous reviewers for their generous feedback, and Julian Fischer for his help in proving Proposition 1. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 715767).","publication_status":"published","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"author":[{"id":"400429CC-F248-11E8-B48F-1D18A9856A87","first_name":"Christian","last_name":"Hafner","full_name":"Hafner, Christian"},{"id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel","full_name":"Bickel, Bernd"}],"related_material":{"record":[{"id":"12897","status":"public","relation":"part_of_dissertation"}]},"date_updated":"2024-03-28T23:30:47Z","date_created":"2023-07-04T07:41:30Z","volume":42,"month":"09","publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368"]},"external_id":{"isi":["001086833300010"]},"oa":1,"quality_controlled":"1","isi":1,"project":[{"call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425"}],"doi":"10.1145/3606033","acknowledged_ssus":[{"_id":"M-Shop"}],"language":[{"iso":"eng"}],"type":"journal_article","abstract":[{"lang":"eng","text":"The Kirchhoff rod model describes the bending and twisting of slender elastic rods in three dimensions, and has been widely studied to enable the prediction of how a rod will deform, given its geometry and boundary conditions. In this work, we study a number of inverse problems with the goal of computing the geometry of a straight rod that will automatically deform to match a curved target shape after attaching its endpoints to a support structure. Our solution lets us finely control the static equilibrium state of a rod by varying the cross-sectional profiles along its length.\r\nWe also show that the set of physically realizable equilibrium states admits a concise geometric description in terms of linear line complexes, which leads to very efficient computational design algorithms. Implemented in an interactive software tool, they allow us to convert three-dimensional hand-drawn spline curves to elastic rods, and give feedback about the feasibility and practicality of a design in real time. We demonstrate the efficacy of our method by designing and manufacturing several physical prototypes with applications to interior design and soft robotics."}],"issue":"5","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"13188","status":"public","title":"The design space of Kirchhoff rods","ddc":["516"],"intvolume":" 42","oa_version":"Submitted Version","file":[{"success":1,"checksum":"4954c1cfa487725bc156dcfec872478a","date_updated":"2023-07-04T08:11:28Z","date_created":"2023-07-04T08:11:28Z","file_id":"13194","relation":"main_file","creator":"chafner","content_type":"application/pdf","file_size":19635168,"access_level":"open_access","file_name":"kirchhoff-rods.pdf"},{"relation":"supplementary_material","file_id":"13190","title":"Supplemental Material with Proofs","checksum":"79c9975fbc82ff71f1767331d2204cca","date_updated":"2023-07-04T07:46:28Z","date_created":"2023-07-04T07:46:28Z","access_level":"open_access","file_name":"supp-main.pdf","file_size":420909,"content_type":"application/pdf","creator":"chafner"},{"access_level":"open_access","file_name":"supp-cheat.pdf","file_size":430086,"content_type":"application/pdf","creator":"chafner","relation":"supplementary_material","file_id":"13191","title":"Cheat Sheet for Notation","checksum":"4ab647e4f03c711e1e6a5fc1eb8684db","date_updated":"2023-07-04T07:46:30Z","date_created":"2023-07-04T07:46:30Z"},{"file_id":"13192","title":"Supplemental Video","relation":"supplementary_material","checksum":"c0fd9a57d012046de90c185ffa904b76","date_updated":"2023-07-04T07:46:39Z","date_created":"2023-07-04T07:46:39Z","access_level":"open_access","file_name":"kirchhoff-video-final.mp4","creator":"chafner","file_size":268088064,"content_type":"video/mp4"},{"title":"Matlab Source Code with Example","file_id":"13193","relation":"supplementary_material","date_created":"2023-07-04T07:47:10Z","date_updated":"2023-07-04T07:47:10Z","checksum":"71b00712b489ada2cd9815910ee180a9","file_name":"matlab-submission.zip","access_level":"open_access","creator":"chafner","content_type":"application/x-zip-compressed","file_size":25790}],"keyword":["Computer Graphics","Computational Design","Computational Geometry","Shape Modeling"],"day":"20","article_processing_charge":"No","has_accepted_license":"1","publication":"ACM Transactions on Graphics","citation":{"ama":"Hafner C, Bickel B. The design space of Kirchhoff rods. ACM Transactions on Graphics. 2023;42(5). doi:10.1145/3606033","ista":"Hafner C, Bickel B. 2023. The design space of Kirchhoff rods. ACM Transactions on Graphics. 42(5), 171.","apa":"Hafner, C., & Bickel, B. (2023). The design space of Kirchhoff rods. ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3606033","ieee":"C. Hafner and B. Bickel, “The design space of Kirchhoff rods,” ACM Transactions on Graphics, vol. 42, no. 5. Association for Computing Machinery, 2023.","mla":"Hafner, Christian, and Bernd Bickel. “The Design Space of Kirchhoff Rods.” ACM Transactions on Graphics, vol. 42, no. 5, 171, Association for Computing Machinery, 2023, doi:10.1145/3606033.","short":"C. Hafner, B. Bickel, ACM Transactions on Graphics 42 (2023).","chicago":"Hafner, Christian, and Bernd Bickel. “The Design Space of Kirchhoff Rods.” ACM Transactions on Graphics. Association for Computing Machinery, 2023. https://doi.org/10.1145/3606033."},"article_type":"original","date_published":"2023-09-20T00:00:00Z"},{"abstract":[{"text":"A good match of material appearance between real-world objects and their digital on-screen representations is critical for many applications such as fabrication, design, and e-commerce. However, faithful appearance reproduction is challenging, especially for complex phenomena, such as gloss. In most cases, the view-dependent nature of gloss and the range of luminance values required for reproducing glossy materials exceeds the current capabilities of display devices. As a result, appearance reproduction poses significant problems even with accurately rendered images. This paper studies the gap between the gloss perceived from real-world objects and their digital counterparts. Based on our psychophysical experiments on a wide range of 3D printed samples and their corresponding photographs, we derive insights on the influence of geometry, illumination, and the display’s brightness and measure the change in gloss appearance due to the display limitations. Our evaluation experiments demonstrate that using the prediction to correct material parameters in a rendering system improves the match of gloss appearance between real objects and their visualization on a display device.","lang":"eng"}],"type":"conference","oa_version":"Published Version","file":[{"creator":"dernst","file_size":28826826,"content_type":"application/pdf","file_name":"2022_ACM_SIGGRAPH_Chen.pdf","access_level":"open_access","date_created":"2023-01-24T07:35:21Z","date_updated":"2023-01-24T07:35:21Z","success":1,"checksum":"f47f3215ab8bb919e3546b3438c34c21","file_id":"12351","relation":"main_file"}],"status":"public","title":"Gloss management for consistent reproduction of real and virtual objects","ddc":["000"],"intvolume":" 2022","_id":"12135","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","day":"01","article_processing_charge":"No","has_accepted_license":"1","scopus_import":"1","date_published":"2022-11-01T00:00:00Z","publication":"SIGGRAPH Asia 2022 Conference Papers","citation":{"ieee":"B. Chen et al., “Gloss management for consistent reproduction of real and virtual objects,” in SIGGRAPH Asia 2022 Conference Papers, Daegu, South Korea, 2022, vol. 2022.","apa":"Chen, B., Piovarci, M., Wang, C., Seidel, H.-P., Didyk, P., Myszkowski, K., & Serrano, A. (2022). Gloss management for consistent reproduction of real and virtual objects. In SIGGRAPH Asia 2022 Conference Papers (Vol. 2022). Daegu, South Korea: Association for Computing Machinery. https://doi.org/10.1145/3550469.3555406","ista":"Chen B, Piovarci M, Wang C, Seidel H-P, Didyk P, Myszkowski K, Serrano A. 2022. Gloss management for consistent reproduction of real and virtual objects. SIGGRAPH Asia 2022 Conference Papers. SIGGRAPH: Computer Graphics and Interactive Techniques Conference vol. 2022, 35.","ama":"Chen B, Piovarci M, Wang C, et al. Gloss management for consistent reproduction of real and virtual objects. In: SIGGRAPH Asia 2022 Conference Papers. Vol 2022. Association for Computing Machinery; 2022. doi:10.1145/3550469.3555406","chicago":"Chen, Bin, Michael Piovarci, Chao Wang, Hans-Peter Seidel, Piotr Didyk, Karol Myszkowski, and Ana Serrano. “Gloss Management for Consistent Reproduction of Real and Virtual Objects.” In SIGGRAPH Asia 2022 Conference Papers, Vol. 2022. Association for Computing Machinery, 2022. https://doi.org/10.1145/3550469.3555406.","short":"B. Chen, M. Piovarci, C. Wang, H.-P. Seidel, P. Didyk, K. Myszkowski, A. Serrano, in:, SIGGRAPH Asia 2022 Conference Papers, Association for Computing Machinery, 2022.","mla":"Chen, Bin, et al. “Gloss Management for Consistent Reproduction of Real and Virtual Objects.” SIGGRAPH Asia 2022 Conference Papers, vol. 2022, 35, Association for Computing Machinery, 2022, doi:10.1145/3550469.3555406."},"file_date_updated":"2023-01-24T07:35:21Z","article_number":"35","date_updated":"2023-02-13T09:15:25Z","date_created":"2023-01-12T12:03:56Z","volume":2022,"author":[{"full_name":"Chen, Bin","last_name":"Chen","first_name":"Bin"},{"id":"62E473F4-5C99-11EA-A40E-AF823DDC885E","first_name":"Michael","last_name":"Piovarci","full_name":"Piovarci, Michael"},{"full_name":"Wang, Chao","first_name":"Chao","last_name":"Wang"},{"last_name":"Seidel","first_name":"Hans-Peter","full_name":"Seidel, Hans-Peter"},{"last_name":"Didyk","first_name":"Piotr","full_name":"Didyk, Piotr"},{"full_name":"Myszkowski, Karol","first_name":"Karol","last_name":"Myszkowski"},{"full_name":"Serrano, Ana","first_name":"Ana","last_name":"Serrano"}],"publication_status":"published","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"year":"2022","acknowledgement":"This work is supported by FWF Lise Meitner (Grant M 3319), European Research Council (project CHAMELEON, Grant no. 682080), Swiss National Science Foundation (Grant no. 200502), and academic gifts from Meta.","month":"11","publication_identifier":{"isbn":["9781450394703"]},"language":[{"iso":"eng"}],"conference":{"location":"Daegu, South Korea","start_date":"2022-12-06","end_date":"2022-12-09","name":"SIGGRAPH: Computer Graphics and Interactive Techniques Conference"},"doi":"10.1145/3550469.3555406","quality_controlled":"1","project":[{"name":"Perception-Aware Appearance Fabrication","grant_number":"M03319","_id":"eb901961-77a9-11ec-83b8-f5c883a62027"}],"oa":1,"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"}},{"ec_funded":1,"file_date_updated":"2022-06-28T08:32:58Z","article_number":"112","volume":41,"date_updated":"2023-05-31T12:38:21Z","date_created":"2022-06-10T06:41:47Z","related_material":{"link":[{"url":"https://ista.ac.at/en/news/machine-learning-3d-printing-fluids/","description":"News on ISTA website","relation":"press_release"}]},"author":[{"full_name":"Piovarci, Michael","id":"62E473F4-5C99-11EA-A40E-AF823DDC885E","first_name":"Michael","last_name":"Piovarci"},{"full_name":"Foshey, Michael","first_name":"Michael","last_name":"Foshey"},{"last_name":"Xu","first_name":"Jie","full_name":"Xu, Jie"},{"full_name":"Erps, Timothy","last_name":"Erps","first_name":"Timothy"},{"first_name":"Vahid","last_name":"Babaei","full_name":"Babaei, Vahid"},{"full_name":"Didyk, Piotr","last_name":"Didyk","first_name":"Piotr"},{"last_name":"Rusinkiewicz","first_name":"Szymon","full_name":"Rusinkiewicz, Szymon"},{"last_name":"Matusik","first_name":"Wojciech","full_name":"Matusik, Wojciech"},{"first_name":"Bernd","last_name":"Bickel","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","full_name":"Bickel, Bernd"}],"publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"publication_status":"published","acknowledgement":"This work is graciously supported by the following grant agencies: FWF Lise Meitner (Grant M 3319), SNSF (Grant 200502), ERC Starting Grant (MATERIALIZABLE-715767), NSF (Grant IIS-181507).\r\n","year":"2022","publication_identifier":{"eissn":["1557-7368"],"issn":["0730-0301"]},"month":"06","language":[{"iso":"eng"}],"doi":"10.1145/3528223.3530144","project":[{"name":"Perception-Aware Appearance Fabrication","grant_number":"M03319","_id":"eb901961-77a9-11ec-83b8-f5c883a62027"},{"_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020"}],"quality_controlled":"1","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"external_id":{"arxiv":["2201.11819"]},"issue":"4","abstract":[{"text":"Enabling additive manufacturing to employ a wide range of novel, functional materials can be a major boost to this technology. However, making such materials printable requires painstaking trial-and-error by an expert operator,\r\nas they typically tend to exhibit peculiar rheological or hysteresis properties. Even in the case of successfully finding the process parameters, there is no guarantee of print-to-print consistency due to material differences between batches. These challenges make closed-loop feedback an attractive option where the process parameters are adjusted on-the-fly. There are several challenges for designing an efficient controller: the deposition parameters are complex and highly coupled, artifacts occur after long time horizons, simulating the deposition is computationally costly, and learning on hardware is intractable. In this work, we demonstrate the feasibility of learning a closed-loop control policy for additive manufacturing using reinforcement learning. We show that approximate, but efficient, numerical simulation is\r\nsufficient as long as it allows learning the behavioral patterns of deposition that translate to real-world experiences. In combination with reinforcement learning, our model can be used to discover control policies that outperform\r\nbaseline controllers. Furthermore, the recovered policies have a minimal sim-to-real gap. We showcase this by applying our control policy in-vivo on a single-layer, direct ink writing printer. ","lang":"eng"}],"type":"journal_article","file":[{"file_name":"2022_ACM_acceptedversion_Piovarci.pdf","access_level":"open_access","creator":"dernst","file_size":33994829,"content_type":"application/pdf","file_id":"11467","relation":"main_file","date_updated":"2022-06-28T08:32:58Z","date_created":"2022-06-28T08:32:58Z","success":1,"checksum":"27f6fe41c6ff84d50445cc9b0176d45b"}],"oa_version":"Submitted Version","intvolume":" 41","title":"Closed-loop control of direct ink writing via reinforcement learning","ddc":["000"],"status":"public","_id":"11442","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","has_accepted_license":"1","day":"01","date_published":"2022-06-01T00:00:00Z","article_type":"original","citation":{"apa":"Piovarci, M., Foshey, M., Xu, J., Erps, T., Babaei, V., Didyk, P., … Bickel, B. (2022). Closed-loop control of direct ink writing via reinforcement learning. ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3528223.3530144","ieee":"M. Piovarci et al., “Closed-loop control of direct ink writing via reinforcement learning,” ACM Transactions on Graphics, vol. 41, no. 4. Association for Computing Machinery, 2022.","ista":"Piovarci M, Foshey M, Xu J, Erps T, Babaei V, Didyk P, Rusinkiewicz S, Matusik W, Bickel B. 2022. Closed-loop control of direct ink writing via reinforcement learning. ACM Transactions on Graphics. 41(4), 112.","ama":"Piovarci M, Foshey M, Xu J, et al. Closed-loop control of direct ink writing via reinforcement learning. ACM Transactions on Graphics. 2022;41(4). doi:10.1145/3528223.3530144","chicago":"Piovarci, Michael, Michael Foshey, Jie Xu, Timothy Erps, Vahid Babaei, Piotr Didyk, Szymon Rusinkiewicz, Wojciech Matusik, and Bernd Bickel. “Closed-Loop Control of Direct Ink Writing via Reinforcement Learning.” ACM Transactions on Graphics. Association for Computing Machinery, 2022. https://doi.org/10.1145/3528223.3530144.","short":"M. Piovarci, M. Foshey, J. Xu, T. Erps, V. Babaei, P. Didyk, S. Rusinkiewicz, W. Matusik, B. Bickel, ACM Transactions on Graphics 41 (2022).","mla":"Piovarci, Michael, et al. “Closed-Loop Control of Direct Ink Writing via Reinforcement Learning.” ACM Transactions on Graphics, vol. 41, no. 4, 112, Association for Computing Machinery, 2022, doi:10.1145/3528223.3530144."},"publication":"ACM Transactions on Graphics"},{"oa":1,"external_id":{"isi":["000802723900039"]},"isi":1,"quality_controlled":"1","project":[{"_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020"}],"doi":"10.1111/cgf.14490","acknowledged_ssus":[{"_id":"M-Shop"}],"language":[{"iso":"eng"}],"month":"05","publication_identifier":{"issn":["0167-7055"],"eissn":["1467-8659"]},"year":"2022","acknowledgement":"This work was supported by the Research Grants Council of the Hong Kong Special Administrative Region, China [Project No.: CUHK 14201921] and the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 715767 – MATERIALIZABLE). We thank the anonymous reviewers for their insightful feedback; Christian Hafner for proofreading and discussions; Ziqi Wang,\r\nHaisen Zhao, and Martin Hafskjold Thoresen for the helpful discussions; and the Miba Machine Shop at IST Austria for 3D printing the BUNNY and BOOMERANG models.","publication_status":"published","publisher":"Wiley","department":[{"_id":"BeBi"}],"author":[{"full_name":"Liu, Zhenyuan","last_name":"Liu","first_name":"Zhenyuan","orcid":"0000-0001-9200-5690","id":"70f0d7cf-ae65-11ec-a14f-89dfc5505b19"},{"full_name":"Hu, Jingyu","last_name":"Hu","first_name":"Jingyu"},{"last_name":"Xu","first_name":"Hao","full_name":"Xu, Hao"},{"last_name":"Song","first_name":"Peng","full_name":"Song, Peng"},{"last_name":"Zhang","first_name":"Ran","full_name":"Zhang, Ran"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Fu, Chi-Wing","first_name":"Chi-Wing","last_name":"Fu"}],"date_updated":"2023-08-03T06:17:13Z","date_created":"2022-03-27T17:34:17Z","volume":41,"file_date_updated":"2022-03-27T17:34:11Z","ec_funded":1,"publication":"Computer Graphics Forum","citation":{"short":"Z. Liu, J. Hu, H. Xu, P. Song, R. Zhang, B. Bickel, C.-W. Fu, Computer Graphics Forum 41 (2022) 507–519.","mla":"Liu, Zhenyuan, et al. “Worst-Case Rigidity Analysis and Optimization for Assemblies with Mechanical Joints.” Computer Graphics Forum, vol. 41, no. 2, Wiley, 2022, pp. 507–19, doi:10.1111/cgf.14490.","chicago":"Liu, Zhenyuan, Jingyu Hu, Hao Xu, Peng Song, Ran Zhang, Bernd Bickel, and Chi-Wing Fu. “Worst-Case Rigidity Analysis and Optimization for Assemblies with Mechanical Joints.” Computer Graphics Forum. Wiley, 2022. https://doi.org/10.1111/cgf.14490.","ama":"Liu Z, Hu J, Xu H, et al. Worst-case rigidity analysis and optimization for assemblies with mechanical joints. Computer Graphics Forum. 2022;41(2):507-519. doi:10.1111/cgf.14490","apa":"Liu, Z., Hu, J., Xu, H., Song, P., Zhang, R., Bickel, B., & Fu, C.-W. (2022). Worst-case rigidity analysis and optimization for assemblies with mechanical joints. Computer Graphics Forum. Wiley. https://doi.org/10.1111/cgf.14490","ieee":"Z. Liu et al., “Worst-case rigidity analysis and optimization for assemblies with mechanical joints,” Computer Graphics Forum, vol. 41, no. 2. Wiley, pp. 507–519, 2022.","ista":"Liu Z, Hu J, Xu H, Song P, Zhang R, Bickel B, Fu C-W. 2022. Worst-case rigidity analysis and optimization for assemblies with mechanical joints. Computer Graphics Forum. 41(2), 507–519."},"article_type":"original","page":"507-519","date_published":"2022-05-01T00:00:00Z","scopus_import":"1","day":"01","article_processing_charge":"No","has_accepted_license":"1","_id":"10922","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","ddc":["000"],"title":"Worst-case rigidity analysis and optimization for assemblies with mechanical joints","status":"public","intvolume":" 41","oa_version":"Submitted Version","file":[{"relation":"main_file","file_id":"10923","checksum":"b62188b07f5c000f1638c782ec92da41","date_updated":"2022-03-27T17:34:11Z","date_created":"2022-03-27T17:34:11Z","access_level":"open_access","file_name":"paper.pdf","file_size":19601689,"content_type":"application/pdf","creator":"bbickel"}],"type":"journal_article","abstract":[{"text":"We study structural rigidity for assemblies with mechanical joints. Existing methods identify whether an assembly is structurally rigid by assuming parts are perfectly rigid. Yet, an assembly identified as rigid may not be that “rigid” in practice, and existing methods cannot quantify how rigid an assembly is. We address this limitation by developing a new measure, worst-case rigidity, to quantify the rigidity of an assembly as the largest possible deformation that the assembly undergoes for arbitrary external loads of fixed magnitude. Computing worst-case rigidity is non-trivial due to non-rigid parts and different joint types. We thus formulate a new computational approach by encoding parts and their connections into a stiffness matrix, in which parts are modeled as deformable objects and joints as soft constraints. Based on this, we formulate worst-case rigidity analysis as an optimization that seeks the worst-case deformation of an assembly for arbitrary external loads, and solve the optimization problem via an eigenanalysis. Furthermore, we present methods to optimize the geometry and topology of various assemblies to enhance their rigidity, as guided by our rigidity measure. In the end, we validate our method on a variety of assembly structures with physical experiments and demonstrate its effectiveness by designing and fabricating several structurally rigid assemblies.","lang":"eng"}],"issue":"2"},{"month":"07","publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368"]},"language":[{"iso":"eng"}],"doi":"10.1145/3528223.3530071","quality_controlled":"1","isi":1,"project":[{"call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425"}],"external_id":{"isi":["000830989200018"]},"oa":1,"file_date_updated":"2022-08-28T07:56:19Z","ec_funded":1,"article_number":"150","date_created":"2022-08-07T22:01:57Z","date_updated":"2023-08-03T13:21:22Z","volume":41,"author":[{"full_name":"Chen, Rulin","first_name":"Rulin","last_name":"Chen"},{"full_name":"Wang, Ziqi","first_name":"Ziqi","last_name":"Wang"},{"first_name":"Peng","last_name":"Song","full_name":"Song, Peng"},{"first_name":"Bernd","last_name":"Bickel","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","full_name":"Bickel, Bernd"}],"related_material":{"link":[{"description":"News on ISTA website","relation":"press_release","url":"https://ista.ac.at/en/news/unlocking-interlocking-riddles/"}]},"publication_status":"published","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"acknowledgement":"We thank the reviewers for the valuable comments, David Gontier for sharing the source code of the baseline design approach, Christian Hafner for proofreading the paper, Keenan Crane for the 3D model of Cow, and Thingiverse for the 3D models of Moai and Owl. This work was supported by the SUTD Start-up Research Grant (Number: SRG ISTD 2019 148), the Swiss National Science Foundation (NCCR Digital Fabrication Agreement #51NF40-141853), and\r\nthe European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No 715767 – MATERIALIZABLE).","year":"2022","day":"22","article_processing_charge":"No","has_accepted_license":"1","scopus_import":"1","date_published":"2022-07-22T00:00:00Z","article_type":"original","publication":"ACM Transactions on Graphics","citation":{"chicago":"Chen, Rulin, Ziqi Wang, Peng Song, and Bernd Bickel. “Computational Design of High-Level Interlocking Puzzles.” ACM Transactions on Graphics. Association for Computing Machinery, 2022. https://doi.org/10.1145/3528223.3530071.","short":"R. Chen, Z. Wang, P. Song, B. Bickel, ACM Transactions on Graphics 41 (2022).","mla":"Chen, Rulin, et al. “Computational Design of High-Level Interlocking Puzzles.” ACM Transactions on Graphics, vol. 41, no. 4, 150, Association for Computing Machinery, 2022, doi:10.1145/3528223.3530071.","ieee":"R. Chen, Z. Wang, P. Song, and B. Bickel, “Computational design of high-level interlocking puzzles,” ACM Transactions on Graphics, vol. 41, no. 4. Association for Computing Machinery, 2022.","apa":"Chen, R., Wang, Z., Song, P., & Bickel, B. (2022). Computational design of high-level interlocking puzzles. ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3528223.3530071","ista":"Chen R, Wang Z, Song P, Bickel B. 2022. Computational design of high-level interlocking puzzles. ACM Transactions on Graphics. 41(4), 150.","ama":"Chen R, Wang Z, Song P, Bickel B. Computational design of high-level interlocking puzzles. ACM Transactions on Graphics. 2022;41(4). doi:10.1145/3528223.3530071"},"abstract":[{"text":"Interlocking puzzles are intriguing geometric games where the puzzle pieces are held together based on their geometric arrangement, preventing the puzzle from falling apart. High-level-of-difficulty, or simply high-level, interlocking puzzles are a subclass of interlocking puzzles that require multiple moves to take out the first subassembly from the puzzle. Solving a high-level interlocking puzzle is a challenging task since one has to explore many different configurations of the puzzle pieces until reaching a configuration where the first subassembly can be taken out. Designing a high-level interlocking puzzle with a user-specified level of difficulty is even harder since the puzzle pieces have to be interlocking in all the configurations before the first subassembly is taken out.\r\n\r\nIn this paper, we present a computational approach to design high-level interlocking puzzles. The core idea is to represent all possible configurations of an interlocking puzzle as well as transitions among these configurations using a rooted, undirected graph called a disassembly graph and leverage this graph to find a disassembly plan that requires a minimal number of moves to take out the first subassembly from the puzzle. At the design stage, our algorithm iteratively constructs the geometry of each puzzle piece to expand the disassembly graph incrementally, aiming to achieve a user-specified level of difficulty. We show that our approach allows efficient generation of high-level interlocking puzzles of various shape complexities, including new solutions not attainable by state-of-the-art approaches.","lang":"eng"}],"issue":"4","type":"journal_article","file":[{"file_name":"Chen-2022-High-LevelPuzzle_authorVersion.pdf","access_level":"open_access","file_size":16896871,"content_type":"application/pdf","creator":"bbickel","relation":"main_file","file_id":"11992","date_created":"2022-08-28T07:56:19Z","date_updated":"2022-08-28T07:56:19Z","checksum":"0b51651be45b1b33f2072bd5d2686c69","success":1}],"oa_version":"Submitted Version","title":"Computational design of high-level interlocking puzzles","status":"public","ddc":["000"],"intvolume":" 41","_id":"11735","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8"},{"month":"09","publication_identifier":{"eissn":["1467-8659"],"issn":["0167-7055"]},"oa":1,"external_id":{"isi":["000842638900001"]},"isi":1,"quality_controlled":"1","doi":"10.1111/cgf.14581","language":[{"iso":"eng"}],"file_date_updated":"2022-08-28T18:18:08Z","year":"2022","publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"Wiley","author":[{"first_name":"Thomas","last_name":"Alderighi","full_name":"Alderighi, Thomas"},{"last_name":"Malomo","first_name":"Luigi","full_name":"Malomo, Luigi"},{"last_name":"Auzinger","first_name":"Thomas","orcid":"0000-0002-1546-3265","id":"4718F954-F248-11E8-B48F-1D18A9856A87","full_name":"Auzinger, Thomas"},{"last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","full_name":"Bickel, Bernd"},{"last_name":"Cignoni","first_name":"Paulo","full_name":"Cignoni, Paulo"},{"full_name":"Pietroni, Nico","last_name":"Pietroni","first_name":"Nico"}],"date_updated":"2023-08-03T13:21:55Z","date_created":"2022-08-28T18:17:01Z","volume":41,"scopus_import":"1","keyword":["Computer Graphics and Computer-Aided Design"],"day":"01","has_accepted_license":"1","article_processing_charge":"No","publication":"Computer Graphics Forum","citation":{"ista":"Alderighi T, Malomo L, Auzinger T, Bickel B, Cignoni P, Pietroni N. 2022. State of the art in computational mould design. Computer Graphics Forum. 41(6), 435–452.","ieee":"T. Alderighi, L. Malomo, T. Auzinger, B. Bickel, P. Cignoni, and N. Pietroni, “State of the art in computational mould design,” Computer Graphics Forum, vol. 41, no. 6. Wiley, pp. 435–452, 2022.","apa":"Alderighi, T., Malomo, L., Auzinger, T., Bickel, B., Cignoni, P., & Pietroni, N. (2022). State of the art in computational mould design. Computer Graphics Forum. Wiley. https://doi.org/10.1111/cgf.14581","ama":"Alderighi T, Malomo L, Auzinger T, Bickel B, Cignoni P, Pietroni N. State of the art in computational mould design. Computer Graphics Forum. 2022;41(6):435-452. doi:10.1111/cgf.14581","chicago":"Alderighi, Thomas, Luigi Malomo, Thomas Auzinger, Bernd Bickel, Paulo Cignoni, and Nico Pietroni. “State of the Art in Computational Mould Design.” Computer Graphics Forum. Wiley, 2022. https://doi.org/10.1111/cgf.14581.","mla":"Alderighi, Thomas, et al. “State of the Art in Computational Mould Design.” Computer Graphics Forum, vol. 41, no. 6, Wiley, 2022, pp. 435–52, doi:10.1111/cgf.14581.","short":"T. Alderighi, L. Malomo, T. Auzinger, B. Bickel, P. Cignoni, N. Pietroni, Computer Graphics Forum 41 (2022) 435–452."},"article_type":"original","page":"435-452","date_published":"2022-09-01T00:00:00Z","type":"journal_article","abstract":[{"text":"Moulding refers to a set of manufacturing techniques in which a mould, usually a cavity or a solid frame, is used to shape a liquid or pliable material into an object of the desired shape. The popularity of moulding comes from its effectiveness, scalability and versatility in terms of employed materials. Its relevance as a fabrication process is demonstrated by the extensive literature covering different aspects related to mould design, from material flow simulation to the automation of mould geometry design. In this state-of-the-art report, we provide an extensive review of the automatic methods for the design of moulds, focusing on contributions from a geometric perspective. We classify existing mould design methods based on their computational approach and the nature of their target moulding process. We summarize the relationships between computational approaches and moulding techniques, highlighting their strengths and limitations. Finally, we discuss potential future research directions.","lang":"eng"}],"issue":"6","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"11993","title":"State of the art in computational mould design","ddc":["000"],"status":"public","intvolume":" 41","oa_version":"Submitted Version","file":[{"checksum":"c40cc8ceb7b7f0512172b883d712198e","date_updated":"2022-08-28T18:18:08Z","date_created":"2022-08-28T18:18:08Z","title":"pre-peer reviewed version","file_id":"11994","relation":"main_file","creator":"bbickel","file_size":32480850,"content_type":"application/pdf","access_level":"open_access","description":"This is the pre-peer reviewed version of the following article: Alderighi, T., Malomo, L., Auzinger, T., Bickel, B., Cignoni, P. and Pietroni, N. (2022), State of the Art in Computational Mould Design. Computer Graphics Forum, which has been published in final form at https://doi.org/10.1111/cgf.14581. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.","file_name":"star_molding_preprint.pdf"}]},{"abstract":[{"lang":"eng","text":"Portrait viewpoint and illumination editing is an important problem with several applications in VR/AR, movies, and photography. Comprehensive knowledge of geometry and illumination is critical for obtaining photorealistic results. Current methods are unable to explicitly model in 3D while handing both viewpoint and illumination editing from a single image. In this paper, we propose VoRF, a novel approach that can take even a single portrait image as input and relight human heads under novel illuminations that can be viewed from arbitrary viewpoints. VoRF represents a human head as a continuous volumetric field and learns a prior model of human heads using a coordinate-based MLP with separate latent spaces for identity and illumination. The prior model is learnt in an auto-decoder manner over a diverse class of head shapes and appearances, allowing VoRF to generalize to novel test identities from a single input image. Additionally, VoRF has a reflectance MLP that uses the intermediate features of the prior model for rendering One-Light-at-A-Time (OLAT) images under novel views. We synthesize novel illuminations by combining these OLAT images with target environment maps. Qualitative and quantitative evaluations demonstrate the effectiveness of VoRF for relighting and novel view synthesis even when applied to unseen subjects under uncontrolled illuminations."}],"type":"conference","oa_version":"Published Version","file":[{"access_level":"open_access","file_name":"vorf_main.pdf","file_size":5202710,"content_type":"application/pdf","creator":"bbickel","relation":"main_file","title":"VoRF: Volumetric Relightable Faces","file_id":"12453","checksum":"b60b70bb48700aee709c85a69231821d","date_updated":"2023-01-30T10:48:18Z","date_created":"2023-01-30T10:48:18Z"},{"file_name":"vorf_supp.pdf","access_level":"open_access","creator":"bbickel","content_type":"application/pdf","file_size":37953188,"title":"VoRF: Volumetric Relightable Faces – SUPPLEMENTAL MATERIAL –","file_id":"12454","relation":"supplementary_material","date_updated":"2023-01-30T10:48:29Z","date_created":"2023-01-30T10:48:29Z","checksum":"ce5f4ce66eaaa1590ee5df989fca6f61"},{"file_id":"12455","relation":"supplementary_material","date_updated":"2023-01-30T10:48:37Z","date_created":"2023-01-30T10:48:37Z","checksum":"08aecca434b08fee75ee1efe87943718","file_name":"video.mp4","access_level":"open_access","creator":"bbickel","content_type":"video/mp4","file_size":57855492}],"_id":"12452","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"VoRF: Volumetric Relightable Faces","ddc":["000"],"status":"public","day":"01","has_accepted_license":"1","article_processing_charge":"No","scopus_import":"1","date_published":"2022-12-01T00:00:00Z","publication":"33rd British Machine Vision Conference","citation":{"ista":"Rao P, B R M, Fox G, Weyrich T, Bickel B, Seidel H-P, Pfister H, Matusik W, Tewari A, Theobalt C, Elgharib M. 2022. VoRF: Volumetric Relightable Faces. 33rd British Machine Vision Conference. BMVC: British Machine Vision Conference, 708.","apa":"Rao, P., B R, M., Fox, G., Weyrich, T., Bickel, B., Seidel, H.-P., … Elgharib, M. (2022). VoRF: Volumetric Relightable Faces. In 33rd British Machine Vision Conference. London, United Kingdom: British Machine Vision Association and Society for Pattern Recognition.","ieee":"P. Rao et al., “VoRF: Volumetric Relightable Faces,” in 33rd British Machine Vision Conference, London, United Kingdom, 2022.","ama":"Rao P, B R M, Fox G, et al. VoRF: Volumetric Relightable Faces. In: 33rd British Machine Vision Conference. British Machine Vision Association and Society for Pattern Recognition; 2022.","chicago":"Rao, Pramod, Mallikarjun B R, Gereon Fox, Tim Weyrich, Bernd Bickel, Hans-Peter Seidel, Hanspeter Pfister, et al. “VoRF: Volumetric Relightable Faces.” In 33rd British Machine Vision Conference. British Machine Vision Association and Society for Pattern Recognition, 2022.","mla":"Rao, Pramod, et al. “VoRF: Volumetric Relightable Faces.” 33rd British Machine Vision Conference, 708, British Machine Vision Association and Society for Pattern Recognition, 2022.","short":"P. Rao, M. B R, G. Fox, T. Weyrich, B. Bickel, H.-P. Seidel, H. Pfister, W. Matusik, A. Tewari, C. Theobalt, M. Elgharib, in:, 33rd British Machine Vision Conference, British Machine Vision Association and Society for Pattern Recognition, 2022."},"file_date_updated":"2023-01-30T10:48:37Z","article_number":"708","author":[{"full_name":"Rao, Pramod","first_name":"Pramod","last_name":"Rao"},{"first_name":"Mallikarjun","last_name":"B R","full_name":"B R, Mallikarjun"},{"full_name":"Fox, Gereon","first_name":"Gereon","last_name":"Fox"},{"first_name":"Tim","last_name":"Weyrich","full_name":"Weyrich, Tim"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Hans-Peter","last_name":"Seidel","full_name":"Seidel, Hans-Peter"},{"last_name":"Pfister","first_name":"Hanspeter","full_name":"Pfister, Hanspeter"},{"full_name":"Matusik, Wojciech","last_name":"Matusik","first_name":"Wojciech"},{"full_name":"Tewari, Ayush","first_name":"Ayush","last_name":"Tewari"},{"full_name":"Theobalt, Christian","last_name":"Theobalt","first_name":"Christian"},{"first_name":"Mohamed","last_name":"Elgharib","full_name":"Elgharib, Mohamed"}],"date_created":"2023-01-30T10:47:06Z","date_updated":"2023-10-31T08:40:55Z","year":"2022","acknowledgement":"This work was supported by the ERC Consolidator Grant 4DReply (770784).","publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"British Machine Vision Association and Society for Pattern Recognition","month":"12","conference":{"end_date":"2022-11-24","start_date":"2022-11-21","location":"London, United Kingdom","name":"BMVC: British Machine Vision Conference"},"language":[{"iso":"eng"}],"oa":1,"main_file_link":[{"open_access":"1","url":"https://bmvc2022.mpi-inf.mpg.de/708/"}],"quality_controlled":"1"},{"language":[{"iso":"eng"}],"date_published":"2022-05-09T00:00:00Z","doi":"10.1101/2022.03.16.484431","oa":1,"main_file_link":[{"url":"https://doi.org/10.1101/2022.03.16.484431","open_access":"1"}],"citation":{"ista":"Velicky P, Miguel Villalba E, Michalska JM, Wei D, Lin Z, Watson J, Troidl J, Beyer J, Ben Simon Y, Sommer CM, Jahr W, Cenameri A, Broichhagen J, Grant SGN, Jonas PM, Novarino G, Pfister H, Bickel B, Danzl JG. Saturated reconstruction of living brain tissue. bioRxiv, 10.1101/2022.03.16.484431.","ieee":"P. Velicky et al., “Saturated reconstruction of living brain tissue,” bioRxiv. Cold Spring Harbor Laboratory.","apa":"Velicky, P., Miguel Villalba, E., Michalska, J. M., Wei, D., Lin, Z., Watson, J., … Danzl, J. G. (n.d.). Saturated reconstruction of living brain tissue. bioRxiv. Cold Spring Harbor Laboratory. https://doi.org/10.1101/2022.03.16.484431","ama":"Velicky P, Miguel Villalba E, Michalska JM, et al. Saturated reconstruction of living brain tissue. bioRxiv. doi:10.1101/2022.03.16.484431","chicago":"Velicky, Philipp, Eder Miguel Villalba, Julia M Michalska, Donglai Wei, Zudi Lin, Jake Watson, Jakob Troidl, et al. “Saturated Reconstruction of Living Brain Tissue.” BioRxiv. Cold Spring Harbor Laboratory, n.d. https://doi.org/10.1101/2022.03.16.484431.","mla":"Velicky, Philipp, et al. “Saturated Reconstruction of Living Brain Tissue.” BioRxiv, Cold Spring Harbor Laboratory, doi:10.1101/2022.03.16.484431.","short":"P. Velicky, E. Miguel Villalba, J.M. Michalska, D. Wei, Z. Lin, J. Watson, J. Troidl, J. Beyer, Y. Ben Simon, C.M. Sommer, W. Jahr, A. Cenameri, J. Broichhagen, S.G.N. Grant, P.M. Jonas, G. Novarino, H. Pfister, B. Bickel, J.G. Danzl, BioRxiv (n.d.)."},"publication":"bioRxiv","article_processing_charge":"No","day":"09","month":"05","oa_version":"Preprint","date_created":"2022-08-23T11:07:59Z","date_updated":"2024-03-28T23:30:20Z","related_material":{"record":[{"id":"12470","relation":"dissertation_contains","status":"public"}]},"author":[{"id":"39BDC62C-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-2340-7431","first_name":"Philipp","last_name":"Velicky","full_name":"Velicky, Philipp"},{"full_name":"Miguel Villalba, Eder","first_name":"Eder","last_name":"Miguel Villalba","id":"3FB91342-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-5665-0430"},{"last_name":"Michalska","first_name":"Julia M","orcid":"0000-0003-3862-1235","id":"443DB6DE-F248-11E8-B48F-1D18A9856A87","full_name":"Michalska, Julia M"},{"full_name":"Wei, Donglai","last_name":"Wei","first_name":"Donglai"},{"full_name":"Lin, Zudi","last_name":"Lin","first_name":"Zudi"},{"last_name":"Watson","first_name":"Jake","orcid":"0000-0002-8698-3823","id":"63836096-4690-11EA-BD4E-32803DDC885E","full_name":"Watson, Jake"},{"full_name":"Troidl, Jakob","first_name":"Jakob","last_name":"Troidl"},{"full_name":"Beyer, Johanna","last_name":"Beyer","first_name":"Johanna"},{"full_name":"Ben Simon, Yoav","last_name":"Ben Simon","first_name":"Yoav","id":"43DF3136-F248-11E8-B48F-1D18A9856A87"},{"id":"4DF26D8C-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-1216-9105","first_name":"Christoph M","last_name":"Sommer","full_name":"Sommer, Christoph M"},{"first_name":"Wiebke","last_name":"Jahr","id":"425C1CE8-F248-11E8-B48F-1D18A9856A87","full_name":"Jahr, Wiebke"},{"id":"9ac8f577-2357-11eb-997a-e566c5550886","first_name":"Alban","last_name":"Cenameri","full_name":"Cenameri, Alban"},{"full_name":"Broichhagen, Johannes","first_name":"Johannes","last_name":"Broichhagen"},{"full_name":"Grant, Seth G. N.","last_name":"Grant","first_name":"Seth G. N."},{"last_name":"Jonas","first_name":"Peter M","orcid":"0000-0001-5001-4804","id":"353C1B58-F248-11E8-B48F-1D18A9856A87","full_name":"Jonas, Peter M"},{"orcid":"0000-0002-7673-7178","id":"3E57A680-F248-11E8-B48F-1D18A9856A87","last_name":"Novarino","first_name":"Gaia","full_name":"Novarino, Gaia"},{"last_name":"Pfister","first_name":"Hanspeter","full_name":"Pfister, Hanspeter"},{"id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel","full_name":"Bickel, Bernd"},{"full_name":"Danzl, Johann G","orcid":"0000-0001-8559-3973","id":"42EFD3B6-F248-11E8-B48F-1D18A9856A87","last_name":"Danzl","first_name":"Johann G"}],"publisher":"Cold Spring Harbor Laboratory","department":[{"_id":"PeJo"},{"_id":"GaNo"},{"_id":"BeBi"},{"_id":"JoDa"}],"publication_status":"submitted","title":"Saturated reconstruction of living brain tissue","status":"public","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"11943","year":"2022","abstract":[{"text":"Complex wiring between neurons underlies the information-processing network enabling all brain functions, including cognition and memory. For understanding how the network is structured, processes information, and changes over time, comprehensive visualization of the architecture of living brain tissue with its cellular and molecular components would open up major opportunities. However, electron microscopy (EM) provides nanometre-scale resolution required for full in-silico reconstruction1–5, yet is limited to fixed specimens and static representations. Light microscopy allows live observation, with super-resolution approaches6–12 facilitating nanoscale visualization, but comprehensive 3D-reconstruction of living brain tissue has been hindered by tissue photo-burden, photobleaching, insufficient 3D-resolution, and inadequate signal-to-noise ratio (SNR). Here we demonstrate saturated reconstruction of living brain tissue. We developed an integrated imaging and analysis technology, adapting stimulated emission depletion (STED) microscopy6,13 in extracellularly labelled tissue14 for high SNR and near-isotropic resolution. Centrally, a two-stage deep-learning approach leveraged previously obtained information on sample structure to drastically reduce photo-burden and enable automated volumetric reconstruction down to single synapse level. Live reconstruction provides unbiased analysis of tissue architecture across time in relation to functional activity and targeted activation, and contextual understanding of molecular labelling. This adoptable technology will facilitate novel insights into the dynamic functional architecture of living brain tissue.","lang":"eng"}],"type":"preprint"},{"abstract":[{"lang":"eng","text":"Tactile feedback of an object’s surface enables us to discern its material properties and affordances. This understanding is used in digital fabrication processes by creating objects with high-resolution surface variations to influence a user’s tactile perception. As the design of such surface haptics commonly relies on knowledge from real-life experiences, it is unclear how to adapt this information for digital design methods. In this work, we investigate replicating the haptics of real materials. Using an existing process for capturing an object’s microgeometry, we digitize and reproduce the stable surface information of a set of 15 fabric samples. In a psychophysical experiment, we evaluate the tactile qualities of our set of original samples and their replicas. From our results, we see that direct reproduction of surface variations is able to influence different psychophysical dimensions of the tactile perception of surface textures. While the fabrication process did not preserve all properties, our approach underlines that replication of surface microgeometries benefits fabrication methods in terms of haptic perception by covering a large range of tactile variations. Moreover, by changing the surface structure of a single fabricated material, its material perception can be influenced. We conclude by proposing strategies for capturing and reproducing digitized textures to better resemble the perceived haptics of the originals."}],"type":"conference","oa_version":"Preprint","file":[{"content_type":"application/pdf","file_size":29796364,"creator":"bbickel","file_name":"degraen-UIST2021_Texture_Appropriation_CR_preprint.pdf","access_level":"open_access","date_created":"2021-10-18T07:36:03Z","date_updated":"2021-10-18T07:36:03Z","checksum":"b0b26464df79b3a59e8ed82e4e19ab15","relation":"main_file","file_id":"10149"}],"ddc":["000"],"status":"public","title":"Capturing tactile properties of real surfaces for haptic reproduction","_id":"10148","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","day":"10","article_processing_charge":"No","has_accepted_license":"1","date_published":"2021-10-10T00:00:00Z","page":"954-971","publication":"34th Annual ACM Symposium","citation":{"ieee":"D. Degraen, M. Piovarci, B. Bickel, and A. Kruger, “Capturing tactile properties of real surfaces for haptic reproduction,” in 34th Annual ACM Symposium, Virtual, 2021, pp. 954–971.","apa":"Degraen, D., Piovarci, M., Bickel, B., & Kruger, A. (2021). Capturing tactile properties of real surfaces for haptic reproduction. In 34th Annual ACM Symposium (pp. 954–971). Virtual: Association for Computing Machinery. https://doi.org/10.1145/3472749.3474798","ista":"Degraen D, Piovarci M, Bickel B, Kruger A. 2021. Capturing tactile properties of real surfaces for haptic reproduction. 34th Annual ACM Symposium. UIST: User Interface Software and Technology, 954–971.","ama":"Degraen D, Piovarci M, Bickel B, Kruger A. Capturing tactile properties of real surfaces for haptic reproduction. In: 34th Annual ACM Symposium. Association for Computing Machinery; 2021:954-971. doi:10.1145/3472749.3474798","chicago":"Degraen, Donald, Michael Piovarci, Bernd Bickel, and Antonio Kruger. “Capturing Tactile Properties of Real Surfaces for Haptic Reproduction.” In 34th Annual ACM Symposium, 954–71. Association for Computing Machinery, 2021. https://doi.org/10.1145/3472749.3474798.","short":"D. Degraen, M. Piovarci, B. Bickel, A. Kruger, in:, 34th Annual ACM Symposium, Association for Computing Machinery, 2021, pp. 954–971.","mla":"Degraen, Donald, et al. “Capturing Tactile Properties of Real Surfaces for Haptic Reproduction.” 34th Annual ACM Symposium, Association for Computing Machinery, 2021, pp. 954–71, doi:10.1145/3472749.3474798."},"file_date_updated":"2021-10-18T07:36:03Z","ec_funded":1,"date_created":"2021-10-18T07:36:11Z","date_updated":"2021-10-19T19:29:06Z","author":[{"last_name":"Degraen","first_name":"Donald","full_name":"Degraen, Donald"},{"full_name":"Piovarci, Michael","id":"62E473F4-5C99-11EA-A40E-AF823DDC885E","last_name":"Piovarci","first_name":"Michael"},{"last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","full_name":"Bickel, Bernd"},{"full_name":"Kruger, Antonio","first_name":"Antonio","last_name":"Kruger"}],"publication_status":"published","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"acknowledgement":"Our gratitude goes out to Kamila Mushkina, Akhmajon Makhsadov, Jordan Espenshade, Bruno Fruchard, Roland Bennewitz, and Robert Drumm. This project has received funding from the EU’s Horizon 2020 research and innovation programme, under the Marie Skłodowska-Curie grant agreement No 642841 (DISTRO).","year":"2021","month":"10","publication_identifier":{"isbn":["978-1-4503-8635-7"]},"language":[{"iso":"eng"}],"conference":{"end_date":"2021-10-14","start_date":"2021-10-10","location":"Virtual","name":"UIST: User Interface Software and Technology"},"doi":"10.1145/3472749.3474798","quality_controlled":"1","project":[{"call_identifier":"H2020","name":"Distributed 3D Object Design","_id":"2508E324-B435-11E9-9278-68D0E5697425","grant_number":"642841"}],"oa":1},{"scopus_import":"1","article_processing_charge":"No","has_accepted_license":"1","day":"01","page":"7568-7588","article_type":"original","citation":{"mla":"Elek, Oskar, et al. “Robust and Practical Measurement of Volume Transport Parameters in Solid Photo-Polymer Materials for 3D Printing.” Optics Express, vol. 29, no. 5, The Optical Society, 2021, pp. 7568–88, doi:10.1364/OE.406095.","short":"O. Elek, R. Zhang, D. Sumin, K. Myszkowski, B. Bickel, A. Wilkie, J. Křivánek, T. Weyrich, Optics Express 29 (2021) 7568–7588.","chicago":"Elek, Oskar, Ran Zhang, Denis Sumin, Karol Myszkowski, Bernd Bickel, Alexander Wilkie, Jaroslav Křivánek, and Tim Weyrich. “Robust and Practical Measurement of Volume Transport Parameters in Solid Photo-Polymer Materials for 3D Printing.” Optics Express. The Optical Society, 2021. https://doi.org/10.1364/OE.406095.","ama":"Elek O, Zhang R, Sumin D, et al. Robust and practical measurement of volume transport parameters in solid photo-polymer materials for 3D printing. Optics Express. 2021;29(5):7568-7588. doi:10.1364/OE.406095","ista":"Elek O, Zhang R, Sumin D, Myszkowski K, Bickel B, Wilkie A, Křivánek J, Weyrich T. 2021. Robust and practical measurement of volume transport parameters in solid photo-polymer materials for 3D printing. Optics Express. 29(5), 7568–7588.","ieee":"O. Elek et al., “Robust and practical measurement of volume transport parameters in solid photo-polymer materials for 3D printing,” Optics Express, vol. 29, no. 5. The Optical Society, pp. 7568–7588, 2021.","apa":"Elek, O., Zhang, R., Sumin, D., Myszkowski, K., Bickel, B., Wilkie, A., … Weyrich, T. (2021). Robust and practical measurement of volume transport parameters in solid photo-polymer materials for 3D printing. Optics Express. The Optical Society. https://doi.org/10.1364/OE.406095"},"publication":"Optics Express","date_published":"2021-03-01T00:00:00Z","type":"journal_article","issue":"5","abstract":[{"text":"Volumetric light transport is a pervasive physical phenomenon, and therefore its accurate simulation is important for a broad array of disciplines. While suitable mathematical models for computing the transport are now available, obtaining the necessary material parameters needed to drive such simulations is a challenging task: direct measurements of these parameters from material samples are seldom possible. Building on the inverse scattering paradigm, we present a novel measurement approach which indirectly infers the transport parameters from extrinsic observations of multiple-scattered radiance. The novelty of the proposed approach lies in replacing structured illumination with a structured reflector bonded to the sample, and a robust fitting procedure that largely compensates for potential systematic errors in the calibration of the setup. We show the feasibility of our approach by validating simulations of complex 3D compositions of the measured materials against physical prints, using photo-polymer resins. As presented in this paper, our technique yields colorspace data suitable for accurate appearance reproduction in the area of 3D printing. Beyond that, and without fundamental changes to the basic measurement methodology, it could equally well be used to obtain spectral measurements that are useful for other application areas.","lang":"eng"}],"intvolume":" 29","status":"public","ddc":["000"],"title":"Robust and practical measurement of volume transport parameters in solid photo-polymer materials for 3D printing","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9241","oa_version":"Published Version","file":[{"file_id":"9269","relation":"main_file","date_created":"2021-03-22T08:15:28Z","date_updated":"2021-03-22T08:15:28Z","success":1,"checksum":"a9697ad83136c19ad87e46aa2db63cfd","file_name":"2021_OpticsExpress_Elek.pdf","access_level":"open_access","creator":"dernst","content_type":"application/pdf","file_size":10873700}],"publication_identifier":{"eissn":["1094-4087"]},"month":"03","project":[{"name":"Distributed 3D Object Design","call_identifier":"H2020","_id":"2508E324-B435-11E9-9278-68D0E5697425","grant_number":"642841"},{"call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767"}],"isi":1,"quality_controlled":"1","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"external_id":{"isi":["000624968100103"]},"oa":1,"language":[{"iso":"eng"}],"doi":"10.1364/OE.406095","ec_funded":1,"file_date_updated":"2021-03-22T08:15:28Z","publisher":"The Optical Society","department":[{"_id":"BeBi"}],"publication_status":"published","acknowledgement":"H2020 Marie Skłodowska-Curie Actions (642841); European Research Council (715767); Grantová Agentura České Republiky (16-08111S, 16-18964S); Univerzita Karlova v Praze (SVV-2017-260452); Engineering and Physical Sciences Research Council (EP/K023578/1).\r\nWe are grateful to Stratasys Ltd. for access to the voxel-level print interface of the J750\r\nmachine.","year":"2021","volume":29,"date_created":"2021-03-14T23:01:33Z","date_updated":"2023-08-07T14:11:57Z","author":[{"full_name":"Elek, Oskar","last_name":"Elek","first_name":"Oskar"},{"full_name":"Zhang, Ran","last_name":"Zhang","first_name":"Ran","orcid":"0000-0002-3808-281X","id":"4DDBCEB0-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Sumin, Denis","last_name":"Sumin","first_name":"Denis"},{"last_name":"Myszkowski","first_name":"Karol","full_name":"Myszkowski, Karol"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Alexander","last_name":"Wilkie","full_name":"Wilkie, Alexander"},{"full_name":"Křivánek, Jaroslav","last_name":"Křivánek","first_name":"Jaroslav"},{"last_name":"Weyrich","first_name":"Tim","full_name":"Weyrich, Tim"}]},{"keyword":["multistability","mechanism","computational design","rigidity"],"day":"08","has_accepted_license":"1","article_processing_charge":"No","publication":"ACM Transactions on Graphics","citation":{"mla":"Zhang, Ran, et al. “Computational Design of Planar Multistable Compliant Structures.” ACM Transactions on Graphics, vol. 40, no. 5, 186, Association for Computing Machinery, 2021, doi:10.1145/3453477.","short":"R. Zhang, T. Auzinger, B. Bickel, ACM Transactions on Graphics 40 (2021).","chicago":"Zhang, Ran, Thomas Auzinger, and Bernd Bickel. “Computational Design of Planar Multistable Compliant Structures.” ACM Transactions on Graphics. Association for Computing Machinery, 2021. https://doi.org/10.1145/3453477.","ama":"Zhang R, Auzinger T, Bickel B. Computational design of planar multistable compliant structures. ACM Transactions on Graphics. 2021;40(5). doi:10.1145/3453477","ista":"Zhang R, Auzinger T, Bickel B. 2021. Computational design of planar multistable compliant structures. ACM Transactions on Graphics. 40(5), 186.","ieee":"R. Zhang, T. Auzinger, and B. Bickel, “Computational design of planar multistable compliant structures,” ACM Transactions on Graphics, vol. 40, no. 5. Association for Computing Machinery, 2021.","apa":"Zhang, R., Auzinger, T., & Bickel, B. (2021). Computational design of planar multistable compliant structures. ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3453477"},"article_type":"original","date_published":"2021-10-08T00:00:00Z","type":"journal_article","abstract":[{"lang":"eng","text":"This paper presents a method for designing planar multistable compliant structures. Given a sequence of desired stable states and the corresponding poses of the structure, we identify the topology and geometric realization of a mechanism—consisting of bars and joints—that is able to physically reproduce the desired multistable behavior. In order to solve this problem efficiently, we build on insights from minimally rigid graph theory to identify simple but effective topologies for the mechanism. We then optimize its geometric parameters, such as joint positions and bar lengths, to obtain correct transitions between the given poses. Simultaneously, we ensure adequate stability of each pose based on an effective approximate error metric related to the elastic energy Hessian of the bars in the mechanism. As demonstrated by our results, we obtain functional multistable mechanisms of manageable complexity that can be fabricated using 3D printing. Further, we evaluated the effectiveness of our method on a large number of examples in the simulation and fabricated several physical prototypes."}],"issue":"5","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9376","ddc":["000"],"status":"public","title":"Computational design of planar multistable compliant structures","intvolume":" 40","file":[{"file_id":"9377","relation":"main_file","date_created":"2021-05-08T17:36:59Z","date_updated":"2021-05-08T17:36:59Z","checksum":"8564b3118457d4c8939a8ef2b1a2f16c","file_name":"Multistable-authorversion.pdf","access_level":"open_access","creator":"bbickel","content_type":"application/pdf","file_size":18926557},{"date_created":"2021-05-08T17:38:22Z","date_updated":"2021-05-08T17:38:22Z","checksum":"3b6e874e30bfa1bfc3ad3498710145a1","success":1,"relation":"main_file","file_id":"9378","file_size":76542901,"content_type":"video/mp4","creator":"bbickel","file_name":"multistable-video.mp4","access_level":"open_access"},{"file_name":"multistable-supplementary material.pdf","description":"This document provides additional results and analyzes the robustness and limitations of our approach.","access_level":"open_access","creator":"bbickel","content_type":"application/pdf","file_size":3367072,"title":"Supplementary Material for “Computational Design of Planar Multistable Compliant Structures”","file_id":"10562","relation":"supplementary_material","date_updated":"2021-12-17T08:13:51Z","date_created":"2021-12-17T08:13:51Z","checksum":"20dc3bc42e1a912a5b0247c116772098"}],"oa_version":"Published Version","month":"10","publication_identifier":{"eissn":["1557-7368"],"issn":["0730-0301"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"external_id":{"isi":["000752079300003"]},"oa":1,"quality_controlled":"1","isi":1,"project":[{"grant_number":"642841","_id":"2508E324-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"Distributed 3D Object Design"},{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling"}],"doi":"10.1145/3453477","acknowledged_ssus":[{"_id":"M-Shop"}],"language":[{"iso":"eng"}],"article_number":"186","file_date_updated":"2021-12-17T08:13:51Z","ec_funded":1,"year":"2021","acknowledgement":"We would like to thank everyone who contributed to this paper, the authors of artworks for all the examples, including @macrovec-tor_official and Wikimedia for the FLAG semaphore, and @pikisuper-star for the FIGURINE. The photos of iconic poses in the teaser were supplied by (from left to right): Mike Hewitt/Olympics Day 8 - Athletics/Gettty Images, Oneinchpunch/Basketball player training on acourt in New york city/Shutterstock, and Andrew Redington/TigerWoods/Getty Images. We also want to express our gratitude to Christian Hafner for insightful discussions, the IST Austria machine shop SSU, all proof-readers, and anonymous reviewers. This project has received funding from the European Union’s Horizon 2020 research and innovation programme, under the Marie Skłodowska-Curie grant agreement No 642841 (DISTRO), and under the European Research Council grant agreement No 715767 (MATERIALIZABLE).","publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"Association for Computing Machinery","author":[{"id":"4DDBCEB0-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-3808-281X","first_name":"Ran","last_name":"Zhang","full_name":"Zhang, Ran"},{"last_name":"Auzinger","first_name":"Thomas","orcid":"0000-0002-1546-3265","id":"4718F954-F248-11E8-B48F-1D18A9856A87","full_name":"Auzinger, Thomas"},{"full_name":"Bickel, Bernd","first_name":"Bernd","last_name":"Bickel","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385"}],"date_created":"2021-05-08T17:37:08Z","date_updated":"2023-08-08T13:31:38Z","volume":40},{"article_number":"2881-2895","file_date_updated":"2021-05-25T15:08:49Z","ec_funded":1,"publication_status":"published","publisher":"IEEE","department":[{"_id":"BeBi"}],"year":"2021","acknowledgement":"The authors would like to thank anonymous reviewers for their constructive comments. Weiwei Xu is partially supported by Zhejiang Lab. Yin Yang is partially spported by NSF under Grant Nos. CHS 1845024 and 1717972. Weiwei Xu and Hujun Bao are supported by Fundamental Research Funds for the Central Universities. This project has received funding from the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme (Grant agreement No 715767).","pmid":1,"date_updated":"2023-08-08T13:45:46Z","date_created":"2021-05-23T22:01:42Z","volume":27,"author":[{"full_name":"Feng, Xudong","last_name":"Feng","first_name":"Xudong"},{"first_name":"Jiafeng","last_name":"Liu","full_name":"Liu, Jiafeng"},{"last_name":"Wang","first_name":"Huamin","full_name":"Wang, Huamin"},{"last_name":"Yang","first_name":"Yin","full_name":"Yang, Yin"},{"last_name":"Bao","first_name":"Hujun","full_name":"Bao, Hujun"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Xu, Weiwei","last_name":"Xu","first_name":"Weiwei"}],"month":"06","publication_identifier":{"eissn":["10772626"],"issn":["19410506"]},"quality_controlled":"1","isi":1,"project":[{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020"}],"external_id":{"pmid":["31804937"],"isi":["000649620700009"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"language":[{"iso":"eng"}],"doi":"10.1109/TVCG.2019.2957218","type":"journal_article","abstract":[{"lang":"eng","text":"We present a computational design system that assists users to model, optimize, and fabricate quad-robots with soft skins. Our system addresses the challenging task of predicting their physical behavior by fully integrating the multibody dynamics of the mechanical skeleton and the elastic behavior of the soft skin. The developed motion control strategy uses an alternating optimization scheme to avoid expensive full space time-optimization, interleaving space-time optimization for the skeleton, and frame-by-frame optimization for the full dynamics. The output are motor torques to drive the robot to achieve a user prescribed motion trajectory. We also provide a collection of convenient engineering tools and empirical manufacturing guidance to support the fabrication of the designed quad-robot. We validate the feasibility of designs generated with our system through physics simulations and with a physically-fabricated prototype."}],"issue":"6","ddc":["000"],"status":"public","title":"Computational design of skinned Quad-Robots","intvolume":" 27","_id":"9408","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","file":[{"content_type":"application/pdf","file_size":6183002,"creator":"kschuh","access_level":"open_access","file_name":"2021_TVCG_Feng.pdf","checksum":"a78e6ac94e33ade4ffaea66943d5f7dc","success":1,"date_updated":"2021-05-25T15:08:49Z","date_created":"2021-05-25T15:08:49Z","relation":"main_file","file_id":"9427"}],"oa_version":"Published Version","scopus_import":"1","day":"01","article_processing_charge":"No","has_accepted_license":"1","publication":"IEEE Transactions on Visualization and Computer Graphics","citation":{"ieee":"X. Feng et al., “Computational design of skinned Quad-Robots,” IEEE Transactions on Visualization and Computer Graphics, vol. 27, no. 6. IEEE, 2021.","apa":"Feng, X., Liu, J., Wang, H., Yang, Y., Bao, H., Bickel, B., & Xu, W. (2021). Computational design of skinned Quad-Robots. IEEE Transactions on Visualization and Computer Graphics. IEEE. https://doi.org/10.1109/TVCG.2019.2957218","ista":"Feng X, Liu J, Wang H, Yang Y, Bao H, Bickel B, Xu W. 2021. Computational design of skinned Quad-Robots. IEEE Transactions on Visualization and Computer Graphics. 27(6), 2881–2895.","ama":"Feng X, Liu J, Wang H, et al. Computational design of skinned Quad-Robots. IEEE Transactions on Visualization and Computer Graphics. 2021;27(6). doi:10.1109/TVCG.2019.2957218","chicago":"Feng, Xudong, Jiafeng Liu, Huamin Wang, Yin Yang, Hujun Bao, Bernd Bickel, and Weiwei Xu. “Computational Design of Skinned Quad-Robots.” IEEE Transactions on Visualization and Computer Graphics. IEEE, 2021. https://doi.org/10.1109/TVCG.2019.2957218.","short":"X. Feng, J. Liu, H. Wang, Y. Yang, H. Bao, B. Bickel, W. Xu, IEEE Transactions on Visualization and Computer Graphics 27 (2021).","mla":"Feng, Xudong, et al. “Computational Design of Skinned Quad-Robots.” IEEE Transactions on Visualization and Computer Graphics, vol. 27, no. 6, 2881–2895, IEEE, 2021, doi:10.1109/TVCG.2019.2957218."},"date_published":"2021-06-01T00:00:00Z"},{"date_published":"2021-08-01T00:00:00Z","article_type":"original","publication":"ACM Transactions on Graphics","citation":{"chicago":"Mallikarjun, B. R., Ayush Tewari, Abdallah Dib, Tim Weyrich, Bernd Bickel, Hans Peter Seidel, Hanspeter Pfister, et al. “PhotoApp: Photorealistic Appearance Editing of Head Portraits.” ACM Transactions on Graphics. Association for Computing Machinery, 2021. https://doi.org/10.1145/3450626.3459765.","mla":"Mallikarjun, B. R., et al. “PhotoApp: Photorealistic Appearance Editing of Head Portraits.” ACM Transactions on Graphics, vol. 40, no. 4, 44, Association for Computing Machinery, 2021, doi:10.1145/3450626.3459765.","short":"B.R. Mallikarjun, A. Tewari, A. Dib, T. Weyrich, B. Bickel, H.P. Seidel, H. Pfister, W. Matusik, L. Chevallier, M.A. Elgharib, C. Theobalt, ACM Transactions on Graphics 40 (2021).","ista":"Mallikarjun BR, Tewari A, Dib A, Weyrich T, Bickel B, Seidel HP, Pfister H, Matusik W, Chevallier L, Elgharib MA, Theobalt C. 2021. PhotoApp: Photorealistic appearance editing of head portraits. ACM Transactions on Graphics. 40(4), 44.","ieee":"B. R. Mallikarjun et al., “PhotoApp: Photorealistic appearance editing of head portraits,” ACM Transactions on Graphics, vol. 40, no. 4. Association for Computing Machinery, 2021.","apa":"Mallikarjun, B. R., Tewari, A., Dib, A., Weyrich, T., Bickel, B., Seidel, H. P., … Theobalt, C. (2021). PhotoApp: Photorealistic appearance editing of head portraits. ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3450626.3459765","ama":"Mallikarjun BR, Tewari A, Dib A, et al. PhotoApp: Photorealistic appearance editing of head portraits. ACM Transactions on Graphics. 2021;40(4). doi:10.1145/3450626.3459765"},"day":"01","article_processing_charge":"Yes (in subscription journal)","has_accepted_license":"1","scopus_import":"1","oa_version":"Published Version","file":[{"creator":"asandaue","file_size":49840741,"content_type":"application/pdf","access_level":"open_access","file_name":"2021_ACMTransactionsOnGraphics_Mallikarjun.pdf","success":1,"checksum":"51b61b7e5c175e2d7ed8fa3b35f7525a","date_created":"2021-08-09T11:41:50Z","date_updated":"2021-08-09T11:41:50Z","file_id":"9834","relation":"main_file"}],"status":"public","ddc":["000"],"title":"PhotoApp: Photorealistic appearance editing of head portraits","intvolume":" 40","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9819","abstract":[{"lang":"eng","text":"Photorealistic editing of head portraits is a challenging task as humans are very sensitive to inconsistencies in faces. We present an approach for high-quality intuitive editing of the camera viewpoint and scene illumination (parameterised with an environment map) in a portrait image. This requires our method to capture and control the full reflectance field of the person in the image. Most editing approaches rely on supervised learning using training data captured with setups such as light and camera stages. Such datasets are expensive to acquire, not readily available and do not capture all the rich variations of in-the-wild portrait images. In addition, most supervised approaches only focus on relighting, and do not allow camera viewpoint editing. Thus, they only capture and control a subset of the reflectance field. Recently, portrait editing has been demonstrated by operating in the generative model space of StyleGAN. While such approaches do not require direct supervision, there is a significant loss of quality when compared to the supervised approaches. In this paper, we present a method which learns from limited supervised training data. The training images only include people in a fixed neutral expression with eyes closed, without much hair or background variations. Each person is captured under 150 one-light-at-a-time conditions and under 8 camera poses. Instead of training directly in the image space, we design a supervised problem which learns transformations in the latent space of StyleGAN. This combines the best of supervised learning and generative adversarial modeling. We show that the StyleGAN prior allows for generalisation to different expressions, hairstyles and backgrounds. This produces high-quality photorealistic results for in-the-wild images and significantly outperforms existing methods. Our approach can edit the illumination and pose simultaneously, and runs at interactive rates."}],"issue":"4","type":"journal_article","language":[{"iso":"eng"}],"doi":"10.1145/3450626.3459765","isi":1,"quality_controlled":"1","external_id":{"arxiv":["2103.07658"],"isi":["000674930900011"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"month":"08","publication_identifier":{"issn":["07300301"],"eissn":["15577368"]},"date_updated":"2023-08-10T14:25:08Z","date_created":"2021-08-08T22:01:27Z","volume":40,"author":[{"last_name":"Mallikarjun","first_name":"B. R.","full_name":"Mallikarjun, B. R."},{"first_name":"Ayush","last_name":"Tewari","full_name":"Tewari, Ayush"},{"full_name":"Dib, Abdallah","first_name":"Abdallah","last_name":"Dib"},{"full_name":"Weyrich, Tim","last_name":"Weyrich","first_name":"Tim"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Hans Peter","last_name":"Seidel","full_name":"Seidel, Hans Peter"},{"full_name":"Pfister, Hanspeter","first_name":"Hanspeter","last_name":"Pfister"},{"full_name":"Matusik, Wojciech","first_name":"Wojciech","last_name":"Matusik"},{"first_name":"Louis","last_name":"Chevallier","full_name":"Chevallier, Louis"},{"last_name":"Elgharib","first_name":"Mohamed A.","full_name":"Elgharib, Mohamed A."},{"last_name":"Theobalt","first_name":"Christian","full_name":"Theobalt, Christian"}],"publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"Association for Computing Machinery","acknowledgement":"This work was supported by the ERC Consolidator Grant 4DReply (770784). We also acknowledge support from Technicolor and InterDigital. We thank Tiancheng Sun for kindly helping us with the comparisons with Sun et al. [2019].","year":"2021","file_date_updated":"2021-08-09T11:41:50Z","article_number":"44"},{"oa_version":"Submitted Version","_id":"9820","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","title":"The effect of shape and illumination on material perception: Model and applications","status":"public","intvolume":" 40","abstract":[{"text":"Material appearance hinges on material reflectance properties but also surface geometry and illumination. The unlimited number of potential combinations between these factors makes understanding and predicting material appearance a very challenging task. In this work, we collect a large-scale dataset of perceptual ratings of appearance attributes with more than 215,680 responses for 42,120 distinct combinations of material, shape, and illumination. The goal of this dataset is twofold. First, we analyze for the first time the effects of illumination and geometry in material perception across such a large collection of varied appearances. We connect our findings to those of the literature, discussing how previous knowledge generalizes across very diverse materials, shapes, and illuminations. Second, we use the collected dataset to train a deep learning architecture for predicting perceptual attributes that correlate with human judgments. We demonstrate the consistent and robust behavior of our predictor in various challenging scenarios, which, for the first time, enables estimating perceived material attributes from general 2D images. Since our predictor relies on the final appearance in an image, it can compare appearance properties across different geometries and illumination conditions. Finally, we demonstrate several applications that use our predictor, including appearance reproduction using 3D printing, BRDF editing by integrating our predictor in a differentiable renderer, illumination design, or material recommendations for scene design.","lang":"eng"}],"issue":"4","type":"journal_article","date_published":"2021-08-01T00:00:00Z","publication":"ACM Transactions on Graphics","citation":{"ama":"Serrano A, Chen B, Wang C, et al. The effect of shape and illumination on material perception: Model and applications. ACM Transactions on Graphics. 2021;40(4). doi:10.1145/3450626.3459813","ista":"Serrano A, Chen B, Wang C, Piovarci M, Seidel HP, Didyk P, Myszkowski K. 2021. The effect of shape and illumination on material perception: Model and applications. ACM Transactions on Graphics. 40(4), 125.","ieee":"A. Serrano et al., “The effect of shape and illumination on material perception: Model and applications,” ACM Transactions on Graphics, vol. 40, no. 4. Association for Computing Machinery, 2021.","apa":"Serrano, A., Chen, B., Wang, C., Piovarci, M., Seidel, H. P., Didyk, P., & Myszkowski, K. (2021). The effect of shape and illumination on material perception: Model and applications. ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3450626.3459813","mla":"Serrano, Ana, et al. “The Effect of Shape and Illumination on Material Perception: Model and Applications.” ACM Transactions on Graphics, vol. 40, no. 4, 125, Association for Computing Machinery, 2021, doi:10.1145/3450626.3459813.","short":"A. Serrano, B. Chen, C. Wang, M. Piovarci, H.P. Seidel, P. Didyk, K. Myszkowski, ACM Transactions on Graphics 40 (2021).","chicago":"Serrano, Ana, Bin Chen, Chao Wang, Michael Piovarci, Hans Peter Seidel, Piotr Didyk, and Karol Myszkowski. “The Effect of Shape and Illumination on Material Perception: Model and Applications.” ACM Transactions on Graphics. Association for Computing Machinery, 2021. https://doi.org/10.1145/3450626.3459813."},"article_type":"original","day":"01","article_processing_charge":"No","scopus_import":"1","author":[{"last_name":"Serrano","first_name":"Ana","full_name":"Serrano, Ana"},{"full_name":"Chen, Bin","first_name":"Bin","last_name":"Chen"},{"full_name":"Wang, Chao","last_name":"Wang","first_name":"Chao"},{"last_name":"Piovarci","first_name":"Michael","orcid":"0000-0002-5062-4474","id":"62E473F4-5C99-11EA-A40E-AF823DDC885E","full_name":"Piovarci, Michael"},{"last_name":"Seidel","first_name":"Hans Peter","full_name":"Seidel, Hans Peter"},{"full_name":"Didyk, Piotr","last_name":"Didyk","first_name":"Piotr"},{"last_name":"Myszkowski","first_name":"Karol","full_name":"Myszkowski, Karol"}],"date_updated":"2023-08-10T14:20:10Z","date_created":"2021-08-08T22:01:28Z","volume":40,"acknowledgement":"This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie, grant agreement Nº 765911 (RealVision) and from the European Research Council (ERC), grant agreement Nº 804226 (PERDY).","year":"2021","publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"Association for Computing Machinery","article_number":"125","doi":"10.1145/3450626.3459813","language":[{"iso":"eng"}],"external_id":{"isi":["000674930900090"]},"oa":1,"main_file_link":[{"open_access":"1","url":"https://zaguan.unizar.es/record/110704/files/texto_completo.pdf"}],"quality_controlled":"1","isi":1,"month":"08","publication_identifier":{"issn":["07300301"],"eissn":["15577368"]}},{"type":"conference","abstract":[{"text":"The reflectance field of a face describes the reflectance properties responsible for complex lighting effects including diffuse, specular, inter-reflection and self shadowing. Most existing methods for estimating the face reflectance from a monocular image assume faces to be diffuse with very few approaches adding a specular component. This still leaves out important perceptual aspects of reflectance as higher-order global illumination effects and self-shadowing are not modeled. We present a new neural representation for face reflectance where we can estimate all components of the reflectance responsible for the final appearance from a single monocular image. Instead of modeling each component of the reflectance separately using parametric models, our neural representation allows us to generate a basis set of faces in a geometric deformation-invariant space, parameterized by the input light direction, viewpoint and face geometry. We learn to reconstruct this reflectance field of a face just from a monocular image, which can be used to render the face from any viewpoint in any light condition. Our method is trained on a light-stage training dataset, which captures 300 people illuminated with 150 light conditions from 8 viewpoints. We show that our method outperforms existing monocular reflectance reconstruction methods, in terms of photorealism due to better capturing of physical premitives, such as sub-surface scattering, specularities, self-shadows and other higher-order effects.","lang":"eng"}],"title":"Monocular reconstruction of neural face reflectance fields","status":"public","ddc":["000"],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9957","oa_version":"Preprint","file":[{"creator":"bbickel","content_type":"application/pdf","file_size":4746649,"access_level":"open_access","file_name":"R_Monocular_Reconstruction_of_Neural_Face_Reflectance_Fields_CVPR_2021_paper[1].pdf","checksum":"961db0bde76dd87cf833930080bb9f38","date_created":"2021-08-24T06:02:15Z","date_updated":"2021-08-24T06:02:15Z","file_id":"9958","relation":"main_file"}],"scopus_import":"1","day":"01","has_accepted_license":"1","article_processing_charge":"No","page":"4791-4800","publication":"Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition","citation":{"mla":"B R, Mallikarjun, et al. “Monocular Reconstruction of Neural Face Reflectance Fields.” Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, IEEE, 2021, pp. 4791–800, doi:10.1109/CVPR46437.2021.00476.","short":"M. B R, A. Tewari, T.-H. Oh, T. Weyrich, B. Bickel, H.-P. Seidel, H. Pfister, W. Matusik, M. Elgharib, C. Theobalt, in:, Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, IEEE, 2021, pp. 4791–4800.","chicago":"B R, Mallikarjun, Ayush Tewari, Tae-Hyun Oh, Tim Weyrich, Bernd Bickel, Hans-Peter Seidel, Hanspeter Pfister, Wojciech Matusik, Mohamed Elgharib, and Christian Theobalt. “Monocular Reconstruction of Neural Face Reflectance Fields.” In Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 4791–4800. IEEE, 2021. https://doi.org/10.1109/CVPR46437.2021.00476.","ama":"B R M, Tewari A, Oh T-H, et al. Monocular reconstruction of neural face reflectance fields. In: Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition. IEEE; 2021:4791-4800. doi:10.1109/CVPR46437.2021.00476","ista":"B R M, Tewari A, Oh T-H, Weyrich T, Bickel B, Seidel H-P, Pfister H, Matusik W, Elgharib M, Theobalt C. 2021. Monocular reconstruction of neural face reflectance fields. Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition. CVPR: Conference on Computer Vision and Pattern Recognition, 4791–4800.","ieee":"M. B R et al., “Monocular reconstruction of neural face reflectance fields,” in Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, Nashville, TN, United States; Virtual, 2021, pp. 4791–4800.","apa":"B R, M., Tewari, A., Oh, T.-H., Weyrich, T., Bickel, B., Seidel, H.-P., … Theobalt, C. (2021). Monocular reconstruction of neural face reflectance fields. In Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition (pp. 4791–4800). Nashville, TN, United States; Virtual: IEEE. https://doi.org/10.1109/CVPR46437.2021.00476"},"date_published":"2021-09-01T00:00:00Z","file_date_updated":"2021-08-24T06:02:15Z","publication_status":"published","publisher":"IEEE","department":[{"_id":"BeBi"}],"acknowledgement":"We thank Tarun Yenamandra and Duarte David for helping us with the comparisons. This work was supported by the\r\nERC Consolidator Grant 4DReply (770784). We also acknowledge support from InterDigital.","year":"2021","date_updated":"2023-08-11T11:08:35Z","date_created":"2021-08-24T06:03:00Z","author":[{"full_name":"B R, Mallikarjun","first_name":"Mallikarjun","last_name":"B R"},{"last_name":"Tewari","first_name":"Ayush","full_name":"Tewari, Ayush"},{"full_name":"Oh, Tae-Hyun","first_name":"Tae-Hyun","last_name":"Oh"},{"last_name":"Weyrich","first_name":"Tim","full_name":"Weyrich, Tim"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Seidel, Hans-Peter","first_name":"Hans-Peter","last_name":"Seidel"},{"full_name":"Pfister, Hanspeter","first_name":"Hanspeter","last_name":"Pfister"},{"first_name":"Wojciech","last_name":"Matusik","full_name":"Matusik, Wojciech"},{"first_name":"Mohamed","last_name":"Elgharib","full_name":"Elgharib, Mohamed"},{"last_name":"Theobalt","first_name":"Christian","full_name":"Theobalt, Christian"}],"month":"09","publication_identifier":{"issn":["1063-6919"],"isbn":["978-166544509-2"]},"quality_controlled":"1","isi":1,"external_id":{"arxiv":["2008.10247"],"isi":["000739917304096"]},"oa":1,"language":[{"iso":"eng"}],"conference":{"name":"CVPR: Conference on Computer Vision and Pattern Recognition","start_date":"2021-06-20","location":"Nashville, TN, United States; Virtual","end_date":"2021-06-25"},"doi":"10.1109/CVPR46437.2021.00476"},{"publication_identifier":{"eissn":["1467-8659"],"issn":["0167-7055"]},"month":"05","project":[{"call_identifier":"H2020","name":"Distributed 3D Object Design","_id":"2508E324-B435-11E9-9278-68D0E5697425","grant_number":"642841"},{"name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020","_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767"}],"isi":1,"quality_controlled":"1","external_id":{"isi":["000657959600017"]},"oa":1,"language":[{"iso":"eng"}],"doi":"10.1111/cgf.142626","ec_funded":1,"file_date_updated":"2021-10-11T12:06:50Z","department":[{"_id":"BeBi"}],"publisher":"Wiley","publication_status":"published","acknowledgement":"We thank Sebastian Cucerca for processing and capturing the phys-cal printouts. This work was supported by the Charles University grant SVV-260588 and Czech Science Foundation grant 19-07626S. This project has received funding from the European Union’s Horizon 2020 research and innovation programme, under the Marie Skłodowska Curie grant agreements No 642841 (DISTRO) and No765911 (RealVision), and under the European Research Council grant agreement No 715767 (MATERIALIZABLE).","year":"2021","volume":40,"date_created":"2021-06-13T22:01:32Z","date_updated":"2023-08-14T08:01:50Z","author":[{"last_name":"Rittig","first_name":"Tobias","full_name":"Rittig, Tobias"},{"full_name":"Sumin, Denis","last_name":"Sumin","first_name":"Denis"},{"first_name":"Vahid","last_name":"Babaei","full_name":"Babaei, Vahid"},{"last_name":"Didyk","first_name":"Piotr","full_name":"Didyk, Piotr"},{"full_name":"Voloboy, Alexey","last_name":"Voloboy","first_name":"Alexey"},{"full_name":"Wilkie, Alexander","first_name":"Alexander","last_name":"Wilkie"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Karol","last_name":"Myszkowski","full_name":"Myszkowski, Karol"},{"first_name":"Tim","last_name":"Weyrich","full_name":"Weyrich, Tim"},{"full_name":"Křivánek, Jaroslav","last_name":"Křivánek","first_name":"Jaroslav"}],"scopus_import":"1","has_accepted_license":"1","article_processing_charge":"No","day":"01","page":"205-219","article_type":"original","citation":{"short":"T. Rittig, D. Sumin, V. Babaei, P. Didyk, A. Voloboy, A. Wilkie, B. Bickel, K. Myszkowski, T. Weyrich, J. Křivánek, Computer Graphics Forum 40 (2021) 205–219.","mla":"Rittig, Tobias, et al. “Neural Acceleration of Scattering-Aware Color 3D Printing.” Computer Graphics Forum, vol. 40, no. 2, Wiley, 2021, pp. 205–19, doi:10.1111/cgf.142626.","chicago":"Rittig, Tobias, Denis Sumin, Vahid Babaei, Piotr Didyk, Alexey Voloboy, Alexander Wilkie, Bernd Bickel, Karol Myszkowski, Tim Weyrich, and Jaroslav Křivánek. “Neural Acceleration of Scattering-Aware Color 3D Printing.” Computer Graphics Forum. Wiley, 2021. https://doi.org/10.1111/cgf.142626.","ama":"Rittig T, Sumin D, Babaei V, et al. Neural acceleration of scattering-aware color 3D printing. Computer Graphics Forum. 2021;40(2):205-219. doi:10.1111/cgf.142626","apa":"Rittig, T., Sumin, D., Babaei, V., Didyk, P., Voloboy, A., Wilkie, A., … Křivánek, J. (2021). Neural acceleration of scattering-aware color 3D printing. Computer Graphics Forum. Wiley. https://doi.org/10.1111/cgf.142626","ieee":"T. Rittig et al., “Neural acceleration of scattering-aware color 3D printing,” Computer Graphics Forum, vol. 40, no. 2. Wiley, pp. 205–219, 2021.","ista":"Rittig T, Sumin D, Babaei V, Didyk P, Voloboy A, Wilkie A, Bickel B, Myszkowski K, Weyrich T, Křivánek J. 2021. Neural acceleration of scattering-aware color 3D printing. Computer Graphics Forum. 40(2), 205–219."},"publication":"Computer Graphics Forum","date_published":"2021-05-01T00:00:00Z","type":"journal_article","issue":"2","abstract":[{"text":"With the wider availability of full-color 3D printers, color-accurate 3D-print preparation has received increased attention. A key challenge lies in the inherent translucency of commonly used print materials that blurs out details of the color texture. Previous work tries to compensate for these scattering effects through strategic assignment of colored primary materials to printer voxels. To date, the highest-quality approach uses iterative optimization that relies on computationally expensive Monte Carlo light transport simulation to predict the surface appearance from subsurface scattering within a given print material distribution; that optimization, however, takes in the order of days on a single machine. In our work, we dramatically speed up the process by replacing the light transport simulation with a data-driven approach. Leveraging a deep neural network to predict the scattering within a highly heterogeneous medium, our method performs around two orders of magnitude faster than Monte Carlo rendering while yielding optimization results of similar quality level. The network is based on an established method from atmospheric cloud rendering, adapted to our domain and extended by a physically motivated weight sharing scheme that substantially reduces the network size. We analyze its performance in an end-to-end print preparation pipeline and compare quality and runtime to alternative approaches, and demonstrate its generalization to unseen geometry and material values. This for the first time enables full heterogenous material optimization for 3D-print preparation within time frames in the order of the actual printing time.","lang":"eng"}],"intvolume":" 40","title":"Neural acceleration of scattering-aware color 3D printing","ddc":["004"],"status":"public","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9547","oa_version":"Submitted Version","file":[{"creator":"bbickel","file_size":26026501,"content_type":"application/pdf","access_level":"open_access","file_name":"ScatteringAwareColor3DPrinting_authorVersion.pdf","success":1,"checksum":"33271724215f54a75c39d2ed40f2c502","date_updated":"2021-10-11T12:06:50Z","date_created":"2021-10-11T12:06:50Z","file_id":"10120","relation":"main_file"}]},{"title":"The effect of geometry and illumination on appearance perception of different material categories","ddc":["000"],"status":"public","intvolume":" 37","_id":"10574","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","file":[{"creator":"cchlebak","file_size":5741094,"content_type":"application/pdf","file_name":"2021_VisComput_Chen.pdf","access_level":"open_access","date_created":"2021-12-27T13:51:08Z","date_updated":"2021-12-27T13:51:08Z","success":1,"checksum":"244cfcac0479ca6e3444c098ab2860a1","file_id":"10578","relation":"main_file"}],"oa_version":"Published Version","type":"journal_article","abstract":[{"lang":"eng","text":"The understanding of material appearance perception is a complex problem due to interactions between material reflectance, surface geometry, and illumination. Recently, Serrano et al. collected the largest dataset to date with subjective ratings of material appearance attributes, including glossiness, metallicness, sharpness and contrast of reflections. In this work, we make use of their dataset to investigate for the first time the impact of the interactions between illumination, geometry, and eight different material categories in perceived appearance attributes. After an initial analysis, we select for further analysis the four material categories that cover the largest range for all perceptual attributes: fabric, plastic, ceramic, and metal. Using a cumulative link mixed model (CLMM) for robust regression, we discover interactions between these material categories and four representative illuminations and object geometries. We believe that our findings contribute to expanding the knowledge on material appearance perception and can be useful for many applications, such as scene design, where any particular material in a given shape can be aligned with dominant classes of illumination, so that a desired strength of appearance attributes can be achieved."}],"issue":"12","article_type":"original","page":"2975-2987","publication":"Visual Computer","citation":{"apa":"Chen, B., Wang, C., Piovarci, M., Seidel, H. P., Didyk, P., Myszkowski, K., & Serrano, A. (2021). The effect of geometry and illumination on appearance perception of different material categories. Visual Computer. Springer Nature. https://doi.org/10.1007/s00371-021-02227-x","ieee":"B. Chen et al., “The effect of geometry and illumination on appearance perception of different material categories,” Visual Computer, vol. 37, no. 12. Springer Nature, pp. 2975–2987, 2021.","ista":"Chen B, Wang C, Piovarci M, Seidel HP, Didyk P, Myszkowski K, Serrano A. 2021. The effect of geometry and illumination on appearance perception of different material categories. Visual Computer. 37(12), 2975–2987.","ama":"Chen B, Wang C, Piovarci M, et al. The effect of geometry and illumination on appearance perception of different material categories. Visual Computer. 2021;37(12):2975-2987. doi:10.1007/s00371-021-02227-x","chicago":"Chen, Bin, Chao Wang, Michael Piovarci, Hans Peter Seidel, Piotr Didyk, Karol Myszkowski, and Ana Serrano. “The Effect of Geometry and Illumination on Appearance Perception of Different Material Categories.” Visual Computer. Springer Nature, 2021. https://doi.org/10.1007/s00371-021-02227-x.","short":"B. Chen, C. Wang, M. Piovarci, H.P. Seidel, P. Didyk, K. Myszkowski, A. Serrano, Visual Computer 37 (2021) 2975–2987.","mla":"Chen, Bin, et al. “The Effect of Geometry and Illumination on Appearance Perception of Different Material Categories.” Visual Computer, vol. 37, no. 12, Springer Nature, 2021, pp. 2975–87, doi:10.1007/s00371-021-02227-x."},"date_published":"2021-12-01T00:00:00Z","scopus_import":"1","day":"01","article_processing_charge":"Yes","has_accepted_license":"1","publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"Springer Nature","year":"2021","acknowledgement":"This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie, grant agreement N∘ 765911 (RealVision) and from the European Research Council (ERC), grant agreement N∘ 804226 (PERDY). Open Access funding enabled and organized by Projekt DEAL.","date_updated":"2023-08-17T06:29:34Z","date_created":"2021-12-26T23:01:26Z","volume":37,"author":[{"last_name":"Chen","first_name":"Bin","full_name":"Chen, Bin"},{"last_name":"Wang","first_name":"Chao","full_name":"Wang, Chao"},{"full_name":"Piovarci, Michael","last_name":"Piovarci","first_name":"Michael","orcid":"0000-0002-5062-4474","id":"62E473F4-5C99-11EA-A40E-AF823DDC885E"},{"full_name":"Seidel, Hans Peter","first_name":"Hans Peter","last_name":"Seidel"},{"first_name":"Piotr","last_name":"Didyk","full_name":"Didyk, Piotr"},{"last_name":"Myszkowski","first_name":"Karol","full_name":"Myszkowski, Karol"},{"first_name":"Ana","last_name":"Serrano","full_name":"Serrano, Ana"}],"file_date_updated":"2021-12-27T13:51:08Z","quality_controlled":"1","isi":1,"external_id":{"isi":["000673536600003"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"language":[{"iso":"eng"}],"doi":"10.1007/s00371-021-02227-x","month":"12","publication_identifier":{"eissn":["1432-2315"],"issn":["0178-2789"]}},{"day":"01","article_processing_charge":"No","has_accepted_license":"1","date_published":"2021-12-01T00:00:00Z","publication":"ACM Transactions on Graphics","citation":{"chicago":"Alderighi, Thomas, Luigi Malomo, Bernd Bickel, Paolo Cignoni, and Nico Pietroni. “Volume Decomposition for Two-Piece Rigid Casting.” ACM Transactions on Graphics. Association for Computing Machinery, 2021. https://doi.org/10.1145/3478513.3480555.","short":"T. Alderighi, L. Malomo, B. Bickel, P. Cignoni, N. Pietroni, ACM Transactions on Graphics 40 (2021).","mla":"Alderighi, Thomas, et al. “Volume Decomposition for Two-Piece Rigid Casting.” ACM Transactions on Graphics, vol. 40, no. 6, 272, Association for Computing Machinery, 2021, doi:10.1145/3478513.3480555.","apa":"Alderighi, T., Malomo, L., Bickel, B., Cignoni, P., & Pietroni, N. (2021). Volume decomposition for two-piece rigid casting. ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3478513.3480555","ieee":"T. Alderighi, L. Malomo, B. Bickel, P. Cignoni, and N. Pietroni, “Volume decomposition for two-piece rigid casting,” ACM Transactions on Graphics, vol. 40, no. 6. Association for Computing Machinery, 2021.","ista":"Alderighi T, Malomo L, Bickel B, Cignoni P, Pietroni N. 2021. Volume decomposition for two-piece rigid casting. ACM Transactions on Graphics. 40(6), 272.","ama":"Alderighi T, Malomo L, Bickel B, Cignoni P, Pietroni N. Volume decomposition for two-piece rigid casting. ACM Transactions on Graphics. 2021;40(6). doi:10.1145/3478513.3480555"},"article_type":"original","abstract":[{"lang":"eng","text":"We introduce a novel technique to automatically decompose an input object’s volume into a set of parts that can be represented by two opposite height fields. Such decomposition enables the manufacturing of individual parts using two-piece reusable rigid molds. Our decomposition strategy relies on a new energy formulation that utilizes a pre-computed signal on the mesh volume representing the accessibility for a predefined set of extraction directions. Thanks to this novel formulation, our method allows for efficient optimization of a fabrication-aware partitioning of volumes in a completely\r\nautomatic way. We demonstrate the efficacy of our approach by generating valid volume partitionings for a wide range of complex objects and physically reproducing several of them."}],"issue":"6","type":"journal_article","oa_version":"Submitted Version","file":[{"content_type":"application/pdf","file_size":107708317,"creator":"bbickel","file_name":"rigidmolds-authorversion.pdf","access_level":"open_access","date_created":"2021-10-27T07:08:07Z","date_updated":"2021-10-27T07:08:07Z","checksum":"384ece7a9ad1026787ba9560b04336d5","relation":"main_file","file_id":"10185"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"10184","title":"Volume decomposition for two-piece rigid casting","status":"public","ddc":["000"],"intvolume":" 40","month":"12","publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368 "]},"doi":"10.1145/3478513.3480555","language":[{"iso":"eng"}],"oa":1,"main_file_link":[{"open_access":"1","url":"http://vcg.isti.cnr.it/Publications/2021/AMBCP21"}],"external_id":{"isi":["000729846700077"]},"isi":1,"quality_controlled":"1","project":[{"name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020","_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767"}],"file_date_updated":"2021-10-27T07:08:07Z","ec_funded":1,"article_number":"272","author":[{"full_name":"Alderighi, Thomas","first_name":"Thomas","last_name":"Alderighi"},{"last_name":"Malomo","first_name":"Luigi","full_name":"Malomo, Luigi"},{"id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel","full_name":"Bickel, Bernd"},{"first_name":"Paolo","last_name":"Cignoni","full_name":"Cignoni, Paolo"},{"first_name":"Nico","last_name":"Pietroni","full_name":"Pietroni, Nico"}],"date_created":"2021-10-27T07:08:19Z","date_updated":"2024-02-28T12:52:48Z","volume":40,"acknowledgement":"The authors thank Marco Callieri for all his precious help with the resin casts. The models used in the paper are courtesy of the Stanford 3D Scanning Repository, the AIM@SHAPE Shape Repository, and Thingi10K Repository. The research was partially funded by the European Research Council (ERC) MATERIALIZABLE: Intelligent fabrication-oriented computational design and modeling (grant no. 715767).","year":"2021","publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"Association for Computing Machinery"},{"department":[{"_id":"BeBi"}],"publisher":"Association for Computing Machinery","publication_status":"published","acknowledgement":"We thank the anonymous reviewers for their generous feedback, and Michal Piovarči for his help in producing the supplemental video. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 715767).\r\n","year":"2021","volume":40,"date_created":"2021-08-08T22:01:26Z","date_updated":"2024-03-28T23:30:47Z","related_material":{"link":[{"url":"https://ist.ac.at/en/news/designing-with-elastic-structures/","description":"News on IST Website","relation":"press_release"}],"record":[{"status":"public","relation":"dissertation_contains","id":"12897"}]},"author":[{"full_name":"Hafner, Christian","last_name":"Hafner","first_name":"Christian","id":"400429CC-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Bickel, Bernd","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel"}],"article_number":"126","ec_funded":1,"file_date_updated":"2021-10-18T10:42:22Z","project":[{"name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020","grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425"}],"isi":1,"quality_controlled":"1","external_id":{"isi":["000674930900091"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"language":[{"iso":"eng"}],"doi":"10.1145/3450626.3459800","conference":{"name":"SIGGRAF: Special Interest Group on Computer Graphics and Interactive Techniques","start_date":"2021-08-09","location":"Virtual","end_date":"2021-08-13"},"publication_identifier":{"eissn":["1557-7368"],"issn":["0730-0301"]},"month":"07","intvolume":" 40","title":"The design space of plane elastic curves","status":"public","ddc":["516"],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9817","file":[{"file_name":"elastic-curves-paper.pdf","access_level":"open_access","file_size":17064290,"content_type":"application/pdf","creator":"chafner","relation":"main_file","file_id":"10150","date_created":"2021-10-18T10:42:15Z","date_updated":"2021-10-18T10:42:15Z","checksum":"7e5d08ce46b0451b3102eacd3d00f85f","success":1},{"date_updated":"2021-10-18T10:42:22Z","date_created":"2021-10-18T10:42:22Z","checksum":"0088643478be7c01a703b5b10767348f","relation":"supplementary_material","file_id":"10151","file_size":547156,"content_type":"application/pdf","creator":"chafner","file_name":"elastic-curves-supp.pdf","access_level":"open_access"}],"oa_version":"Published Version","type":"journal_article","issue":"4","abstract":[{"lang":"eng","text":"Elastic bending of initially flat slender elements allows the realization and economic fabrication of intriguing curved shapes. In this work, we derive an intuitive but rigorous geometric characterization of the design space of plane elastic rods with variable stiffness. It enables designers to determine which shapes are physically viable with active bending by visual inspection alone. Building on these insights, we propose a method for efficiently designing the geometry of a flat elastic rod that realizes a target equilibrium curve, which only requires solving a linear program. We implement this method in an interactive computational design tool that gives feedback about the feasibility of a design, and computes the geometry of the structural elements necessary to realize it within an instant. The tool also offers an iterative optimization routine that improves the fabricability of a model while modifying it as little as possible. In addition, we use our geometric characterization to derive an algorithm for analyzing and recovering the stability of elastic curves that would otherwise snap out of their unstable equilibrium shapes by buckling. We show the efficacy of our approach by designing and manufacturing several physical models that are assembled from flat elements."}],"article_type":"original","citation":{"ama":"Hafner C, Bickel B. The design space of plane elastic curves. ACM Transactions on Graphics. 2021;40(4). doi:10.1145/3450626.3459800","ista":"Hafner C, Bickel B. 2021. The design space of plane elastic curves. ACM Transactions on Graphics. 40(4), 126.","apa":"Hafner, C., & Bickel, B. (2021). The design space of plane elastic curves. ACM Transactions on Graphics. Virtual: Association for Computing Machinery. https://doi.org/10.1145/3450626.3459800","ieee":"C. Hafner and B. Bickel, “The design space of plane elastic curves,” ACM Transactions on Graphics, vol. 40, no. 4. Association for Computing Machinery, 2021.","mla":"Hafner, Christian, and Bernd Bickel. “The Design Space of Plane Elastic Curves.” ACM Transactions on Graphics, vol. 40, no. 4, 126, Association for Computing Machinery, 2021, doi:10.1145/3450626.3459800.","short":"C. Hafner, B. Bickel, ACM Transactions on Graphics 40 (2021).","chicago":"Hafner, Christian, and Bernd Bickel. “The Design Space of Plane Elastic Curves.” ACM Transactions on Graphics. Association for Computing Machinery, 2021. https://doi.org/10.1145/3450626.3459800."},"publication":"ACM Transactions on Graphics","date_published":"2021-07-19T00:00:00Z","keyword":["Computing methodologies","shape modeling","modeling and simulation","theory of computation","computational geometry","mathematics of computing","mathematical optimization"],"scopus_import":"1","has_accepted_license":"1","article_processing_charge":"No","day":"19"},{"article_number":"1505","author":[{"full_name":"Laccone, Francesco","last_name":"Laccone","first_name":"Francesco"},{"last_name":"Malomo","first_name":"Luigi","full_name":"Malomo, Luigi"},{"full_name":"Perez Rodriguez, Jesus","first_name":"Jesus","last_name":"Perez Rodriguez","id":"2DC83906-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Pietroni, Nico","last_name":"Pietroni","first_name":"Nico"},{"first_name":"Federico","last_name":"Ponchio","full_name":"Ponchio, Federico"},{"last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","full_name":"Bickel, Bernd"},{"first_name":"Paolo","last_name":"Cignoni","full_name":"Cignoni, Paolo"}],"date_updated":"2021-03-03T09:43:14Z","date_created":"2021-02-28T23:01:25Z","volume":2,"year":"2020","acknowledgement":"The FlexMaps Pavilion has been awarded First Prize at the “Competition and Exhibition of innovative lightweight structures” organized by the IASS Working Group 21 within the FORM and FORCE, joint international conference of IASS Symposium 2019 and Structural Membranes 2019 (Barcelona, 7-11 October 2019) with the following motivation: “for its structural innovation of bending-twisting system, connection constructability and exquisite craftmanship”[20]. The authors would like to acknowledge the Visual Computing Lab Staff of ISTI - CNR, in particular Thomas Alderighi, Marco Callieri, Paolo Pingi; Antonio Rizzo of IPCF - CNR; and the Administrative Staff of ISTI - CNR. This research was partially funded by the EU H2020 Programme EVOCATION: Advanced Visual and Geometric Computing for 3D Capture, Display, and Fabrication (grant no. 813170).","publication_status":"published","publisher":"Springer Nature","department":[{"_id":"BeBi"}],"month":"09","publication_identifier":{"eissn":["25233971"]},"doi":"10.1007/s42452-020-03305-w","language":[{"iso":"eng"}],"quality_controlled":"1","abstract":[{"text":"Bending-active structures are able to efficiently produce complex curved shapes from flat panels. The desired deformation of the panels derives from the proper selection of their elastic properties. Optimized panels, called FlexMaps, are designed such that, once they are bent and assembled, the resulting static equilibrium configuration matches a desired input 3D shape. The FlexMaps elastic properties are controlled by locally varying spiraling geometric mesostructures, which are optimized in size and shape to match specific bending requests, namely the global curvature of the target shape. The design pipeline starts from a quad mesh representing the input 3D shape, which defines the edge size and the total amount of spirals: every quad will embed one spiral. Then, an optimization algorithm tunes the geometry of the spirals by using a simplified pre-computed rod model. This rod model is derived from a non-linear regression algorithm which approximates the non-linear behavior of solid FEM spiral models subject to hundreds of load combinations. This innovative pipeline has been applied to the project of a lightweight plywood pavilion named FlexMaps Pavilion, which is a single-layer piecewise twisted arch that fits a bounding box of 3.90x3.96x3.25 meters. This case study serves to test the applicability of this methodology at the architectural scale. The structure is validated via FE analyses and the fabrication of the full scale prototype.","lang":"eng"}],"issue":"9","type":"journal_article","oa_version":"None","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"9208","title":"A bending-active twisted-arch plywood structure: Computational design and fabrication of the FlexMaps Pavilion","status":"public","intvolume":" 2","day":"01","article_processing_charge":"No","scopus_import":"1","date_published":"2020-09-01T00:00:00Z","publication":"SN Applied Sciences","citation":{"ama":"Laccone F, Malomo L, Perez Rodriguez J, et al. A bending-active twisted-arch plywood structure: Computational design and fabrication of the FlexMaps Pavilion. SN Applied Sciences. 2020;2(9). doi:10.1007/s42452-020-03305-w","ieee":"F. Laccone et al., “A bending-active twisted-arch plywood structure: Computational design and fabrication of the FlexMaps Pavilion,” SN Applied Sciences, vol. 2, no. 9. Springer Nature, 2020.","apa":"Laccone, F., Malomo, L., Perez Rodriguez, J., Pietroni, N., Ponchio, F., Bickel, B., & Cignoni, P. (2020). A bending-active twisted-arch plywood structure: Computational design and fabrication of the FlexMaps Pavilion. SN Applied Sciences. Springer Nature. https://doi.org/10.1007/s42452-020-03305-w","ista":"Laccone F, Malomo L, Perez Rodriguez J, Pietroni N, Ponchio F, Bickel B, Cignoni P. 2020. A bending-active twisted-arch plywood structure: Computational design and fabrication of the FlexMaps Pavilion. SN Applied Sciences. 2(9), 1505.","short":"F. Laccone, L. Malomo, J. Perez Rodriguez, N. Pietroni, F. Ponchio, B. Bickel, P. Cignoni, SN Applied Sciences 2 (2020).","mla":"Laccone, Francesco, et al. “A Bending-Active Twisted-Arch Plywood Structure: Computational Design and Fabrication of the FlexMaps Pavilion.” SN Applied Sciences, vol. 2, no. 9, 1505, Springer Nature, 2020, doi:10.1007/s42452-020-03305-w.","chicago":"Laccone, Francesco, Luigi Malomo, Jesus Perez Rodriguez, Nico Pietroni, Federico Ponchio, Bernd Bickel, and Paolo Cignoni. “A Bending-Active Twisted-Arch Plywood Structure: Computational Design and Fabrication of the FlexMaps Pavilion.” SN Applied Sciences. Springer Nature, 2020. https://doi.org/10.1007/s42452-020-03305-w."},"article_type":"original"},{"publication_status":"published","publisher":"Elsevier","department":[{"_id":"BeBi"}],"year":"2020","pmid":1,"date_updated":"2023-08-17T14:14:23Z","date_created":"2019-12-29T23:00:48Z","volume":134,"author":[{"full_name":"Dodier, Philippe","first_name":"Philippe","last_name":"Dodier"},{"last_name":"Auzinger","first_name":"Thomas","orcid":"0000-0002-1546-3265","id":"4718F954-F248-11E8-B48F-1D18A9856A87","full_name":"Auzinger, Thomas"},{"last_name":"Mistelbauer","first_name":"Gabriel","full_name":"Mistelbauer, Gabriel"},{"first_name":"Wei Te","last_name":"Wang","full_name":"Wang, Wei Te"},{"full_name":"Ferraz-Leite, Heber","last_name":"Ferraz-Leite","first_name":"Heber"},{"full_name":"Gruber, Andreas","last_name":"Gruber","first_name":"Andreas"},{"full_name":"Marik, Wolfgang","first_name":"Wolfgang","last_name":"Marik"},{"last_name":"Winter","first_name":"Fabian","full_name":"Winter, Fabian"},{"first_name":"Gerrit","last_name":"Fischer","full_name":"Fischer, Gerrit"},{"first_name":"Josa M.","last_name":"Frischer","full_name":"Frischer, Josa M."},{"full_name":"Bavinzski, Gerhard","first_name":"Gerhard","last_name":"Bavinzski"}],"month":"02","publication_identifier":{"issn":["1878-8750"],"eissn":["1878-8769"]},"quality_controlled":"1","isi":1,"external_id":{"isi":["000512878200104"],"pmid":["31733380"]},"language":[{"iso":"eng"}],"doi":"10.1016/j.wneu.2019.11.038","type":"journal_article","abstract":[{"lang":"eng","text":"BACKGROUND:The introduction of image-guided methods to bypass surgery has resulted in optimized preoperative identification of the recipients and excellent patency rates. However, the recently presented methods have also been resource-consuming. In the present study, we have reported a cost-efficient planning workflow for extracranial-intracranial (EC-IC) revascularization combined with transdural indocyanine green videoangiography (tICG-VA). METHODS:We performed a retrospective review at a single tertiary referral center from 2011 to 2018. A novel software-derived workflow was applied for 25 of 92 bypass procedures during the study period. The precision and accuracy were assessed using tICG-VA identification of the cortical recipients and a comparison of the virtual and actual data. The data from a control group of 25 traditionally planned procedures were also matched. RESULTS:The intraoperative transfer time of the calculated coordinates averaged 0.8 minute (range, 0.4-1.9 minutes). The definitive recipients matched the targeted branches in 80%, and a neighboring branch was used in 16%. Our workflow led to a significant craniotomy size reduction in the study group compared with that in the control group (P = 0.005). tICG-VA was successfully applied in 19 cases. An average of 2 potential recipient arteries were identified transdurally, resulting in tailored durotomy and 3 craniotomy adjustments. Follow-up patency results were available for 49 bypass surgeries, comprising 54 grafts. The overall patency rate was 91% at a median follow-up period of 26 months. No significant difference was found in the patency rate between the study and control groups (P = 0.317). CONCLUSIONS:Our clinical results have validated the presented planning and surgical workflow and support the routine implementation of tICG-VA for recipient identification before durotomy."}],"issue":"2","status":"public","title":"Novel software-derived workflow in extracranial–intracranial bypass surgery validated by transdural indocyanine green videoangiography","intvolume":" 134","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"7220","oa_version":"None","scopus_import":"1","day":"01","article_processing_charge":"No","article_type":"original","page":"e892-e902","publication":"World Neurosurgery","citation":{"mla":"Dodier, Philippe, et al. “Novel Software-Derived Workflow in Extracranial–Intracranial Bypass Surgery Validated by Transdural Indocyanine Green Videoangiography.” World Neurosurgery, vol. 134, no. 2, Elsevier, 2020, pp. e892–902, doi:10.1016/j.wneu.2019.11.038.","short":"P. Dodier, T. Auzinger, G. Mistelbauer, W.T. Wang, H. Ferraz-Leite, A. Gruber, W. Marik, F. Winter, G. Fischer, J.M. Frischer, G. Bavinzski, World Neurosurgery 134 (2020) e892–e902.","chicago":"Dodier, Philippe, Thomas Auzinger, Gabriel Mistelbauer, Wei Te Wang, Heber Ferraz-Leite, Andreas Gruber, Wolfgang Marik, et al. “Novel Software-Derived Workflow in Extracranial–Intracranial Bypass Surgery Validated by Transdural Indocyanine Green Videoangiography.” World Neurosurgery. Elsevier, 2020. https://doi.org/10.1016/j.wneu.2019.11.038.","ama":"Dodier P, Auzinger T, Mistelbauer G, et al. Novel software-derived workflow in extracranial–intracranial bypass surgery validated by transdural indocyanine green videoangiography. World Neurosurgery. 2020;134(2):e892-e902. doi:10.1016/j.wneu.2019.11.038","ista":"Dodier P, Auzinger T, Mistelbauer G, Wang WT, Ferraz-Leite H, Gruber A, Marik W, Winter F, Fischer G, Frischer JM, Bavinzski G. 2020. Novel software-derived workflow in extracranial–intracranial bypass surgery validated by transdural indocyanine green videoangiography. World Neurosurgery. 134(2), e892–e902.","ieee":"P. Dodier et al., “Novel software-derived workflow in extracranial–intracranial bypass surgery validated by transdural indocyanine green videoangiography,” World Neurosurgery, vol. 134, no. 2. Elsevier, pp. e892–e902, 2020.","apa":"Dodier, P., Auzinger, T., Mistelbauer, G., Wang, W. T., Ferraz-Leite, H., Gruber, A., … Bavinzski, G. (2020). Novel software-derived workflow in extracranial–intracranial bypass surgery validated by transdural indocyanine green videoangiography. World Neurosurgery. Elsevier. https://doi.org/10.1016/j.wneu.2019.11.038"},"date_published":"2020-02-01T00:00:00Z"},{"oa_version":"None","_id":"7218","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","status":"public","title":"Single-stage bone resection and cranioplastic reconstruction: Comparison of a novel software-derived PEEK workflow with the standard reconstructive method","intvolume":" 49","abstract":[{"lang":"eng","text":"The combined resection of skull-infiltrating tumours and immediate cranioplastic reconstruction predominantly relies on freehand-moulded solutions. Techniques that enable this procedure to be performed easily in routine clinical practice would be useful. A cadaveric study was developed in which a new software tool was used to perform single-stage reconstructions with prefabricated implants after the resection of skull-infiltrating pathologies. A novel 3D visualization and interaction framework was developed to create 10 virtual craniotomies in five cadaveric specimens. Polyether ether ketone (PEEK) implants were manufactured according to the bone defects. The image-guided craniotomy was reconstructed with PEEK and compared to polymethyl methacrylate (PMMA). Navigational accuracy and surgical precision were assessed. The PEEK workflow resulted in up to 10-fold shorter reconstruction times than the standard technique. Surgical precision was reflected by the mean 1.1 ± 0.29 mm distance between the virtual and real craniotomy, with submillimetre precision in 50%. Assessment of the global offset between virtual and actual craniotomy revealed an average shift of 4.5 ± 3.6 mm. The results validated the ‘elective single-stage cranioplasty’ technique as a state-of-the-art virtual planning method and surgical workflow. This patient-tailored workflow could significantly reduce surgical times compared to the traditional, intraoperative acrylic moulding method and may be an option for the reconstruction of bone defects in the craniofacial region."}],"issue":"8","type":"journal_article","date_published":"2020-08-01T00:00:00Z","publication":"International Journal of Oral and Maxillofacial Surgery","citation":{"chicago":"Dodier, Philippe, Fabian Winter, Thomas Auzinger, Gabriel Mistelbauer, Josa M. Frischer, Wei Te Wang, Ammar Mallouhi, et al. “Single-Stage Bone Resection and Cranioplastic Reconstruction: Comparison of a Novel Software-Derived PEEK Workflow with the Standard Reconstructive Method.” International Journal of Oral and Maxillofacial Surgery. Elsevier, 2020. https://doi.org/10.1016/j.ijom.2019.11.011.","mla":"Dodier, Philippe, et al. “Single-Stage Bone Resection and Cranioplastic Reconstruction: Comparison of a Novel Software-Derived PEEK Workflow with the Standard Reconstructive Method.” International Journal of Oral and Maxillofacial Surgery, vol. 49, no. 8, Elsevier, 2020, pp. P1007-1015, doi:10.1016/j.ijom.2019.11.011.","short":"P. Dodier, F. Winter, T. Auzinger, G. Mistelbauer, J.M. Frischer, W.T. Wang, A. Mallouhi, W. Marik, S. Wolfsberger, L. Reissig, F. Hammadi, C. Matula, A. Baumann, G. Bavinzski, International Journal of Oral and Maxillofacial Surgery 49 (2020) P1007-1015.","ista":"Dodier P, Winter F, Auzinger T, Mistelbauer G, Frischer JM, Wang WT, Mallouhi A, Marik W, Wolfsberger S, Reissig L, Hammadi F, Matula C, Baumann A, Bavinzski G. 2020. Single-stage bone resection and cranioplastic reconstruction: Comparison of a novel software-derived PEEK workflow with the standard reconstructive method. International Journal of Oral and Maxillofacial Surgery. 49(8), P1007-1015.","ieee":"P. Dodier et al., “Single-stage bone resection and cranioplastic reconstruction: Comparison of a novel software-derived PEEK workflow with the standard reconstructive method,” International Journal of Oral and Maxillofacial Surgery, vol. 49, no. 8. Elsevier, pp. P1007-1015, 2020.","apa":"Dodier, P., Winter, F., Auzinger, T., Mistelbauer, G., Frischer, J. M., Wang, W. T., … Bavinzski, G. (2020). Single-stage bone resection and cranioplastic reconstruction: Comparison of a novel software-derived PEEK workflow with the standard reconstructive method. International Journal of Oral and Maxillofacial Surgery. Elsevier. https://doi.org/10.1016/j.ijom.2019.11.011","ama":"Dodier P, Winter F, Auzinger T, et al. Single-stage bone resection and cranioplastic reconstruction: Comparison of a novel software-derived PEEK workflow with the standard reconstructive method. International Journal of Oral and Maxillofacial Surgery. 2020;49(8):P1007-1015. doi:10.1016/j.ijom.2019.11.011"},"article_type":"original","page":"P1007-1015","day":"01","article_processing_charge":"No","scopus_import":"1","author":[{"full_name":"Dodier, Philippe","last_name":"Dodier","first_name":"Philippe"},{"full_name":"Winter, Fabian","last_name":"Winter","first_name":"Fabian"},{"full_name":"Auzinger, Thomas","id":"4718F954-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1546-3265","first_name":"Thomas","last_name":"Auzinger"},{"full_name":"Mistelbauer, Gabriel","first_name":"Gabriel","last_name":"Mistelbauer"},{"full_name":"Frischer, Josa M.","last_name":"Frischer","first_name":"Josa M."},{"full_name":"Wang, Wei Te","last_name":"Wang","first_name":"Wei Te"},{"first_name":"Ammar","last_name":"Mallouhi","full_name":"Mallouhi, Ammar"},{"full_name":"Marik, Wolfgang","last_name":"Marik","first_name":"Wolfgang"},{"full_name":"Wolfsberger, Stefan","last_name":"Wolfsberger","first_name":"Stefan"},{"last_name":"Reissig","first_name":"Lukas","full_name":"Reissig, Lukas"},{"last_name":"Hammadi","first_name":"Firas","full_name":"Hammadi, Firas"},{"first_name":"Christian","last_name":"Matula","full_name":"Matula, Christian"},{"first_name":"Arnulf","last_name":"Baumann","full_name":"Baumann, Arnulf"},{"first_name":"Gerhard","last_name":"Bavinzski","full_name":"Bavinzski, Gerhard"}],"date_created":"2019-12-29T23:00:47Z","date_updated":"2023-08-17T14:15:22Z","volume":49,"year":"2020","pmid":1,"publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"Elsevier","doi":"10.1016/j.ijom.2019.11.011","language":[{"iso":"eng"}],"external_id":{"isi":["000556819800005"],"pmid":["31866145"]},"isi":1,"quality_controlled":"1","month":"08","publication_identifier":{"issn":["0901-5027"],"eissn":["1399-0020"]}},{"article_processing_charge":"No","has_accepted_license":"1","day":"14","date_published":"2020-09-14T00:00:00Z","citation":{"short":"R. Zhang, Structure-Aware Computational Design and Its Application to 3D Printable Volume Scattering, Mechanism, and Multistability, Institute of Science and Technology Austria, 2020.","mla":"Zhang, Ran. Structure-Aware Computational Design and Its Application to 3D Printable Volume Scattering, Mechanism, and Multistability. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8386.","chicago":"Zhang, Ran. “Structure-Aware Computational Design and Its Application to 3D Printable Volume Scattering, Mechanism, and Multistability.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8386.","ama":"Zhang R. Structure-aware computational design and its application to 3D printable volume scattering, mechanism, and multistability. 2020. doi:10.15479/AT:ISTA:8386","ieee":"R. Zhang, “Structure-aware computational design and its application to 3D printable volume scattering, mechanism, and multistability,” Institute of Science and Technology Austria, 2020.","apa":"Zhang, R. (2020). Structure-aware computational design and its application to 3D printable volume scattering, mechanism, and multistability. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8386","ista":"Zhang R. 2020. Structure-aware computational design and its application to 3D printable volume scattering, mechanism, and multistability. Institute of Science and Technology Austria."},"page":"148","abstract":[{"lang":"eng","text":"Form versus function is a long-standing debate in various design-related fields, such as architecture as well as graphic and industrial design. A good design that balances form and function often requires considerable human effort and collaboration among experts from different professional fields. Computational design tools provide a new paradigm for designing functional objects. In computational design, form and function are represented as mathematical\r\nquantities, with the help of numerical and combinatorial algorithms, they can assist even novice users in designing versatile models that exhibit their desired functionality. This thesis presents three disparate research studies on the computational design of functional objects: The appearance of 3d print—we optimize the volumetric material distribution for faithfully replicating colored surface texture in 3d printing; the dynamic motion of mechanical structures—\r\nour design system helps the novice user to retarget various mechanical templates with different functionality to complex 3d shapes; and a more abstract functionality, multistability—our algorithm automatically generates models that exhibit multiple stable target poses. For each of these cases, our computational design tools not only ensure the functionality of the results but also permit the user aesthetic freedom over the form. Moreover, fabrication constraints\r\nwere taken into account, which allow for the immediate creation of physical realization via 3D printing or laser cutting."}],"type":"dissertation","alternative_title":["ISTA Thesis"],"file":[{"creator":"rzhang","content_type":"application/x-zip-compressed","file_size":1245800191,"access_level":"closed","file_name":"Thesis_Ran.zip","checksum":"edcf578b6e1c9b0dd81ff72d319b66ba","date_updated":"2020-09-14T12:18:43Z","date_created":"2020-09-14T01:02:59Z","file_id":"8388","relation":"source_file"},{"relation":"main_file","file_id":"8396","checksum":"817e20c33be9247f906925517c56a40d","success":1,"date_created":"2020-09-15T12:51:53Z","date_updated":"2020-09-15T12:51:53Z","access_level":"open_access","file_name":"PhD_thesis_Ran Zhang_20200915.pdf","file_size":161385316,"content_type":"application/pdf","creator":"rzhang"}],"oa_version":"Published Version","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","_id":"8386","ddc":["003"],"title":"Structure-aware computational design and its application to 3D printable volume scattering, mechanism, and multistability","status":"public","publication_identifier":{"issn":["2663-337X"]},"month":"09","doi":"10.15479/AT:ISTA:8386","language":[{"iso":"eng"}],"supervisor":[{"id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel","full_name":"Bickel, Bernd"}],"acknowledged_ssus":[{"_id":"SSU"}],"degree_awarded":"PhD","oa":1,"project":[{"_id":"2508E324-B435-11E9-9278-68D0E5697425","grant_number":"642841","name":"Distributed 3D Object Design","call_identifier":"H2020"},{"call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767"}],"ec_funded":1,"file_date_updated":"2020-09-15T12:51:53Z","related_material":{"record":[{"id":"486","status":"public","relation":"part_of_dissertation"},{"id":"1002","status":"public","relation":"part_of_dissertation"}]},"author":[{"full_name":"Zhang, Ran","id":"4DDBCEB0-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-3808-281X","first_name":"Ran","last_name":"Zhang"}],"date_updated":"2023-09-22T09:49:31Z","date_created":"2020-09-14T01:04:53Z","year":"2020","acknowledgement":"The research in this thesis has received funding from the European Union’s Horizon 2020 research and innovation programme, under the Marie Skłodowska-Curie grant agreement No 642841 (DISTRO) and the European Research Council grant agreement No 715767 (MATERIALIZABLE). All the research projects in this thesis were also supported by Scientific Service Units (SSUs) at IST Austria.","publisher":"Institute of Science and Technology Austria","department":[{"_id":"BeBi"}],"publication_status":"published"},{"publication_identifier":{"isbn":["978-3-99078-010-7"],"issn":["2663-337X"]},"month":"09","doi":"10.15479/AT:ISTA:8366","language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"ScienComp"}],"degree_awarded":"PhD","supervisor":[{"full_name":"Bickel, Bernd","first_name":"Bernd","last_name":"Bickel","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385"}],"oa":1,"project":[{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020"}],"ec_funded":1,"file_date_updated":"2020-09-16T15:11:01Z","related_material":{"record":[{"id":"7151","status":"deleted","relation":"research_data"},{"id":"7262","status":"public","relation":"part_of_dissertation"},{"status":"public","relation":"part_of_dissertation","id":"8562"},{"id":"1001","status":"public","relation":"part_of_dissertation"},{"relation":"research_data","status":"public","id":"8375"}]},"author":[{"last_name":"Guseinov","first_name":"Ruslan","orcid":"0000-0001-9819-5077","id":"3AB45EE2-F248-11E8-B48F-1D18A9856A87","full_name":"Guseinov, Ruslan"}],"date_updated":"2024-02-21T12:44:29Z","date_created":"2020-09-10T16:19:55Z","acknowledgement":"During the work on this thesis, I received substantial support from IST Austria’s scientific service units. A big thank you to Todor Asenov and other Miba Machine Shop team members for their help with fabrication of experimental prototypes. In addition, I would like to thank Scientific Computing team for the support with high performance computing.\r\nFinancial support was provided by the European Research Council (ERC) under grant agreement No 715767 - MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling, which I gratefully acknowledge.","year":"2020","publisher":"Institute of Science and Technology Austria","department":[{"_id":"BeBi"}],"publication_status":"published","has_accepted_license":"1","article_processing_charge":"No","day":"21","keyword":["computer-aided design","shape modeling","self-morphing","mechanical engineering"],"date_published":"2020-09-21T00:00:00Z","citation":{"ama":"Guseinov R. Computational design of curved thin shells: From glass façades to programmable matter. 2020. doi:10.15479/AT:ISTA:8366","apa":"Guseinov, R. (2020). Computational design of curved thin shells: From glass façades to programmable matter. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8366","ieee":"R. Guseinov, “Computational design of curved thin shells: From glass façades to programmable matter,” Institute of Science and Technology Austria, 2020.","ista":"Guseinov R. 2020. Computational design of curved thin shells: From glass façades to programmable matter. Institute of Science and Technology Austria.","short":"R. Guseinov, Computational Design of Curved Thin Shells: From Glass Façades to Programmable Matter, Institute of Science and Technology Austria, 2020.","mla":"Guseinov, Ruslan. Computational Design of Curved Thin Shells: From Glass Façades to Programmable Matter. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8366.","chicago":"Guseinov, Ruslan. “Computational Design of Curved Thin Shells: From Glass Façades to Programmable Matter.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8366."},"page":"118","abstract":[{"text":"Fabrication of curved shells plays an important role in modern design, industry, and science. Among their remarkable properties are, for example, aesthetics of organic shapes, ability to evenly distribute loads, or efficient flow separation. They find applications across vast length scales ranging from sky-scraper architecture to microscopic devices. But, at\r\nthe same time, the design of curved shells and their manufacturing process pose a variety of challenges. In this thesis, they are addressed from several perspectives. In particular, this thesis presents approaches based on the transformation of initially flat sheets into the target curved surfaces. This involves problems of interactive design of shells with nontrivial mechanical constraints, inverse design of complex structural materials, and data-driven modeling of delicate and time-dependent physical properties. At the same time, two newly-developed self-morphing mechanisms targeting flat-to-curved transformation are presented.\r\nIn architecture, doubly curved surfaces can be realized as cold bent glass panelizations. Originally flat glass panels are bent into frames and remain stressed. This is a cost-efficient fabrication approach compared to hot bending, when glass panels are shaped plastically. However such constructions are prone to breaking during bending, and it is highly\r\nnontrivial to navigate the design space, keeping the panels fabricable and aesthetically pleasing at the same time. We introduce an interactive design system for cold bent glass façades, while previously even offline optimization for such scenarios has not been sufficiently developed. Our method is based on a deep learning approach providing quick\r\nand high precision estimation of glass panel shape and stress while handling the shape\r\nmultimodality.\r\nFabrication of smaller objects of scales below 1 m, can also greatly benefit from shaping originally flat sheets. In this respect, we designed new self-morphing shell mechanisms transforming from an initial flat state to a doubly curved state with high precision and detail. Our so-called CurveUps demonstrate the encodement of the geometric information\r\ninto the shell. Furthermore, we explored the frontiers of programmable materials and showed how temporal information can additionally be encoded into a flat shell. This allows prescribing deformation sequences for doubly curved surfaces and, thus, facilitates self-collision avoidance enabling complex shapes and functionalities otherwise impossible.\r\nBoth of these methods include inverse design tools keeping the user in the design loop.","lang":"eng"}],"type":"dissertation","alternative_title":["ISTA Thesis"],"oa_version":"Published Version","file":[{"creator":"rguseino","content_type":"application/pdf","file_size":70950442,"file_name":"thesis_rguseinov.pdf","access_level":"open_access","date_updated":"2020-09-10T16:11:49Z","date_created":"2020-09-10T16:11:49Z","success":1,"checksum":"f8da89553da36037296b0a80f14ebf50","file_id":"8367","relation":"main_file"},{"file_id":"8374","relation":"source_file","date_updated":"2020-09-16T15:11:01Z","date_created":"2020-09-11T09:39:48Z","checksum":"e8fd944c960c20e0e27e6548af69121d","file_name":"thesis_source.zip","access_level":"closed","creator":"rguseino","file_size":76207597,"content_type":"application/x-zip-compressed"}],"_id":"8366","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","title":"Computational design of curved thin shells: From glass façades to programmable matter","ddc":["000"],"status":"public"},{"article_type":"original","publication":"ACM Transactions on Graphics","citation":{"ista":"Gavriil K, Guseinov R, Perez Rodriguez J, Pellis D, Henderson PM, Rist F, Pottmann H, Bickel B. 2020. Computational design of cold bent glass façades. ACM Transactions on Graphics. 39(6), 208.","ieee":"K. Gavriil et al., “Computational design of cold bent glass façades,” ACM Transactions on Graphics, vol. 39, no. 6. Association for Computing Machinery, 2020.","apa":"Gavriil, K., Guseinov, R., Perez Rodriguez, J., Pellis, D., Henderson, P. M., Rist, F., … Bickel, B. (2020). Computational design of cold bent glass façades. ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3414685.3417843","ama":"Gavriil K, Guseinov R, Perez Rodriguez J, et al. Computational design of cold bent glass façades. ACM Transactions on Graphics. 2020;39(6). doi:10.1145/3414685.3417843","chicago":"Gavriil, Konstantinos, Ruslan Guseinov, Jesus Perez Rodriguez, Davide Pellis, Paul M Henderson, Florian Rist, Helmut Pottmann, and Bernd Bickel. “Computational Design of Cold Bent Glass Façades.” ACM Transactions on Graphics. Association for Computing Machinery, 2020. https://doi.org/10.1145/3414685.3417843.","mla":"Gavriil, Konstantinos, et al. “Computational Design of Cold Bent Glass Façades.” ACM Transactions on Graphics, vol. 39, no. 6, 208, Association for Computing Machinery, 2020, doi:10.1145/3414685.3417843.","short":"K. Gavriil, R. Guseinov, J. Perez Rodriguez, D. Pellis, P.M. Henderson, F. Rist, H. Pottmann, B. Bickel, ACM Transactions on Graphics 39 (2020)."},"date_published":"2020-11-26T00:00:00Z","scopus_import":"1","day":"26","has_accepted_license":"1","article_processing_charge":"No","title":"Computational design of cold bent glass façades","status":"public","ddc":["000"],"intvolume":" 39","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"8562","file":[{"relation":"main_file","file_id":"13084","checksum":"c7f67717ad74e670b7daeae732abe151","success":1,"date_created":"2023-05-23T20:54:43Z","date_updated":"2023-05-23T20:54:43Z","access_level":"open_access","file_name":"coldglass.pdf","file_size":28964641,"content_type":"application/pdf","creator":"bbickel"}],"oa_version":"Submitted Version","type":"journal_article","abstract":[{"text":"Cold bent glass is a promising and cost-efficient method for realizing doubly curved glass facades. They are produced by attaching planar glass sheets to curved frames and require keeping the occurring stress within safe limits.\r\nHowever, it is very challenging to navigate the design space of cold bent glass panels due to the fragility of the material, which impedes the form-finding for practically feasible and aesthetically pleasing cold bent glass facades. We propose an interactive, data-driven approach for designing cold bent glass facades that can be seamlessly integrated into a typical architectural design pipeline. Our method allows non-expert users to interactively edit a parametric surface while providing real-time feedback on the deformed shape and maximum stress of cold bent glass panels. Designs are automatically refined to minimize several fairness criteria while maximal stresses are kept within glass limits. We achieve interactive frame rates by using a differentiable Mixture Density Network trained from more than a million simulations. Given a curved boundary, our regression model is capable of handling multistable\r\nconfigurations and accurately predicting the equilibrium shape of the panel and its corresponding maximal stress. We show predictions are highly accurate and validate our results with a physical realization of a cold bent glass surface.","lang":"eng"}],"issue":"6","isi":1,"quality_controlled":"1","project":[{"name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020","_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767"}],"external_id":{"arxiv":["2009.03667"],"isi":["000595589100048"]},"oa":1,"acknowledged_ssus":[{"_id":"ScienComp"}],"language":[{"iso":"eng"}],"doi":"10.1145/3414685.3417843","month":"11","publication_identifier":{"eissn":["1557-7368"],"issn":["0730-0301"]},"publication_status":"published","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"year":"2020","acknowledgement":"We thank IST Austria’s Scientific Computing team for their support, Corinna Datsiou and Sophie Pennetier for their expert input on the practical applications of cold bent glass, and Zaha Hadid Architects and Waagner Biro for providing the architectural datasets. Photo of Fondation Louis Vuitton by Francisco Anzola / CC BY 2.0 / cropped.\r\nPhoto of Opus by Danica O. Kus. This project has received funding from the European Union’s\r\nHorizon 2020 research and innovation program under grant agreement No 675789 - Algebraic Representations in Computer-Aided Design for complEx Shapes (ARCADES), from the European Research Council (ERC) under grant agreement No 715767 - MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling, and SFB-Transregio “Discretization in Geometry and Dynamics” through grant I 2978 of the Austrian Science Fund (FWF). F. Rist and K. Gavriil have been partially supported by KAUST baseline funding.","date_created":"2020-09-23T11:30:02Z","date_updated":"2024-02-21T12:43:21Z","volume":39,"author":[{"last_name":"Gavriil","first_name":"Konstantinos","full_name":"Gavriil, Konstantinos"},{"last_name":"Guseinov","first_name":"Ruslan","orcid":"0000-0001-9819-5077","id":"3AB45EE2-F248-11E8-B48F-1D18A9856A87","full_name":"Guseinov, Ruslan"},{"full_name":"Perez Rodriguez, Jesus","first_name":"Jesus","last_name":"Perez Rodriguez","id":"2DC83906-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Pellis, Davide","last_name":"Pellis","first_name":"Davide"},{"last_name":"Henderson","first_name":"Paul M","orcid":"0000-0002-5198-7445","id":"13C09E74-18D9-11E9-8878-32CFE5697425","full_name":"Henderson, Paul M"},{"full_name":"Rist, Florian","last_name":"Rist","first_name":"Florian"},{"first_name":"Helmut","last_name":"Pottmann","full_name":"Pottmann, Helmut"},{"id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel","full_name":"Bickel, Bernd"}],"related_material":{"link":[{"url":"https://ist.ac.at/en/news/bend-dont-break/","relation":"press_release","description":"News on IST Homepage"}],"record":[{"id":"8366","status":"public","relation":"dissertation_contains"},{"relation":"research_data","status":"public","id":"8761"}]},"article_number":"208","file_date_updated":"2023-05-23T20:54:43Z","ec_funded":1},{"type":"research_data","ec_funded":1,"file_date_updated":"2020-09-11T09:52:36Z","abstract":[{"lang":"eng","text":"Supplementary movies showing the following sequences for spatio-temporarily programmed shells: input geometry and actuation time landscape; comparison of morphing processes from a camera recording and a simulation; final actuated shape."}],"year":"2020","_id":"8375","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","department":[{"_id":"BeBi"}],"publisher":"Institute of Science and Technology Austria","status":"public","title":"Supplementary data for \"Computational design of curved thin shells: from glass façades to programmable matter\"","ddc":["000"],"contributor":[{"id":"3AB45EE2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-9819-5077","first_name":"Ruslan","last_name":"Guseinov","contributor_type":"researcher"},{"first_name":"Connor","contributor_type":"researcher","last_name":"McMahan"},{"id":"2DC83906-F248-11E8-B48F-1D18A9856A87","contributor_type":"researcher","last_name":"Perez Rodriguez","first_name":"Jesus"},{"first_name":"Chiara","last_name":"Daraio","contributor_type":"researcher"},{"last_name":"Bickel","contributor_type":"researcher","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"}],"related_material":{"record":[{"id":"8366","status":"public","relation":"used_in_publication"}]},"author":[{"id":"3AB45EE2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-9819-5077","first_name":"Ruslan","last_name":"Guseinov","full_name":"Guseinov, Ruslan"}],"oa_version":"Published Version","file":[{"access_level":"open_access","file_name":"supplementary_movie_1.mp4","file_size":29214988,"content_type":"video/mp4","creator":"rguseino","relation":"main_file","file_id":"8376","checksum":"4029ffd65fb82ef2366b2fc2a4908e16","success":1,"date_created":"2020-09-11T09:45:21Z","date_updated":"2020-09-11T09:45:21Z"},{"date_created":"2020-09-11T09:45:25Z","date_updated":"2020-09-11T09:45:25Z","success":1,"checksum":"8ed03b04d80f1a4e622cb22e6100afd8","file_id":"8377","relation":"main_file","creator":"rguseino","file_size":28449475,"content_type":"video/mp4","file_name":"supplementary_movie_2.mp4","access_level":"open_access"},{"file_size":26315853,"content_type":"video/mp4","creator":"rguseino","access_level":"open_access","file_name":"supplementary_movie_3.mp4","checksum":"ad6864afb5e694e5c52a88fba4e02eea","success":1,"date_updated":"2020-09-11T09:45:28Z","date_created":"2020-09-11T09:45:28Z","relation":"main_file","file_id":"8378"},{"relation":"main_file","file_id":"8379","date_updated":"2020-09-11T09:45:33Z","date_created":"2020-09-11T09:45:33Z","checksum":"b079cef7871fe1afb69af0e2b099f3b1","success":1,"file_name":"supplementary_movie_4.mp4","access_level":"open_access","content_type":"video/mp4","file_size":25198755,"creator":"rguseino"},{"relation":"main_file","file_id":"8380","date_updated":"2020-09-11T09:45:36Z","date_created":"2020-09-11T09:45:36Z","checksum":"9d1d48a8ed5c109a999c51b044ee523d","success":1,"file_name":"supplementary_movie_5.mp4","access_level":"open_access","file_size":29011354,"content_type":"video/mp4","creator":"rguseino"},{"file_name":"readme.txt","access_level":"open_access","creator":"rguseino","content_type":"text/plain","file_size":586,"file_id":"8381","relation":"main_file","date_updated":"2020-09-11T09:52:36Z","date_created":"2020-09-11T09:52:36Z","success":1,"checksum":"d414d0059e982d752d218756b3c3ce05"}],"date_updated":"2024-02-21T12:44:29Z","date_created":"2020-09-11T09:52:54Z","article_processing_charge":"No","has_accepted_license":"1","month":"09","day":"21","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"citation":{"mla":"Guseinov, Ruslan. Supplementary Data for “Computational Design of Curved Thin Shells: From Glass Façades to Programmable Matter.” Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8375.","short":"R. Guseinov, (2020).","chicago":"Guseinov, Ruslan. “Supplementary Data for ‘Computational Design of Curved Thin Shells: From Glass Façades to Programmable Matter.’” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8375.","ama":"Guseinov R. Supplementary data for “Computational design of curved thin shells: from glass façades to programmable matter.” 2020. doi:10.15479/AT:ISTA:8375","ista":"Guseinov R. 2020. Supplementary data for ‘Computational design of curved thin shells: from glass façades to programmable matter’, Institute of Science and Technology Austria, 10.15479/AT:ISTA:8375.","ieee":"R. Guseinov, “Supplementary data for ‘Computational design of curved thin shells: from glass façades to programmable matter.’” Institute of Science and Technology Austria, 2020.","apa":"Guseinov, R. (2020). Supplementary data for “Computational design of curved thin shells: from glass façades to programmable matter.” Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8375"},"project":[{"call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425"}],"date_published":"2020-09-21T00:00:00Z","doi":"10.15479/AT:ISTA:8375"},{"month":"11","day":"23","has_accepted_license":"1","article_processing_charge":"No","citation":{"mla":"Guseinov, Ruslan. Supplementary Data for “Computational Design of Cold Bent Glass Façades.” Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8761.","short":"R. Guseinov, (2020).","chicago":"Guseinov, Ruslan. “Supplementary Data for ‘Computational Design of Cold Bent Glass Façades.’” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8761.","ama":"Guseinov R. Supplementary data for “Computational design of cold bent glass façades.” 2020. doi:10.15479/AT:ISTA:8761","ista":"Guseinov R. 2020. Supplementary data for ‘Computational design of cold bent glass façades’, Institute of Science and Technology Austria, 10.15479/AT:ISTA:8761.","apa":"Guseinov, R. (2020). Supplementary data for “Computational design of cold bent glass façades.” Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8761","ieee":"R. Guseinov, “Supplementary data for ‘Computational design of cold bent glass façades.’” Institute of Science and Technology Austria, 2020."},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"project":[{"name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020","grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425"}],"doi":"10.15479/AT:ISTA:8761","date_published":"2020-11-23T00:00:00Z","acknowledged_ssus":[{"_id":"ScienComp"}],"type":"research_data","file_date_updated":"2020-11-18T10:04:59Z","ec_funded":1,"_id":"8761","year":"2020","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","ddc":["000"],"title":"Supplementary data for \"Computational design of cold bent glass façades\"","status":"public","publisher":"Institute of Science and Technology Austria","department":[{"_id":"BeBi"}],"author":[{"full_name":"Guseinov, Ruslan","last_name":"Guseinov","first_name":"Ruslan","orcid":"0000-0001-9819-5077","id":"3AB45EE2-F248-11E8-B48F-1D18A9856A87"}],"contributor":[{"last_name":"Gavriil","contributor_type":"researcher","first_name":"Konstantinos"},{"orcid":"0000-0001-9819-5077","id":"3AB45EE2-F248-11E8-B48F-1D18A9856A87","contributor_type":"researcher","last_name":"Guseinov","first_name":"Ruslan"},{"id":"2DC83906-F248-11E8-B48F-1D18A9856A87","contributor_type":"researcher","last_name":"Perez Rodriguez","first_name":"Jesus"},{"first_name":"Davide","contributor_type":"researcher","last_name":"Pellis"},{"id":"13C09E74-18D9-11E9-8878-32CFE5697425","orcid":"0000-0002-5198-7445","first_name":"Paul M","last_name":"Henderson","contributor_type":"researcher"},{"contributor_type":"researcher","last_name":"Rist","first_name":"Florian"},{"first_name":"Helmut","last_name":"Pottmann","contributor_type":"researcher"},{"contributor_type":"researcher","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"}],"related_material":{"link":[{"relation":"software","url":"https://github.com/russelmann/cold-glass-acm"}],"record":[{"id":"8562","relation":"used_in_publication","status":"public"}]},"date_updated":"2024-02-21T12:43:22Z","date_created":"2020-11-16T10:47:18Z","file":[{"success":1,"checksum":"f5ae57b97017b9f61081032703361233","date_updated":"2020-11-16T10:31:29Z","date_created":"2020-11-16T10:31:29Z","file_id":"8762","relation":"main_file","creator":"rguseino","file_size":15378270,"content_type":"application/x-gzip","access_level":"open_access","file_name":"mdn_model.tar.gz"},{"checksum":"b0d25e04060ee78c585ee2f23542c744","success":1,"date_updated":"2020-11-16T10:43:23Z","date_created":"2020-11-16T10:43:23Z","relation":"main_file","file_id":"8763","content_type":"application/x-gzip","file_size":615387734,"creator":"rguseino","access_level":"open_access","file_name":"optimal_panels_data.tar.gz"},{"creator":"rguseino","file_size":1228,"content_type":"text/plain","access_level":"open_access","file_name":"readme.txt","success":1,"checksum":"69c1dde3434ada86d125e0c2588caf1e","date_created":"2020-11-18T10:04:59Z","date_updated":"2020-11-18T10:04:59Z","file_id":"8770","relation":"main_file"}],"oa_version":"Published Version"},{"type":"journal_article","abstract":[{"lang":"eng","text":"Advances in shape-morphing materials, such as hydrogels, shape-memory polymers and light-responsive polymers have enabled prescribing self-directed deformations of initially flat geometries. However, most proposed solutions evolve towards a target geometry without considering time-dependent actuation paths. To achieve more complex geometries and avoid self-collisions, it is critical to encode a spatial and temporal shape evolution within the initially flat shell. Recent realizations of time-dependent morphing are limited to the actuation of few, discrete hinges and cannot form doubly curved surfaces. Here, we demonstrate a method for encoding temporal shape evolution in architected shells that assume complex shapes and doubly curved geometries. The shells are non-periodic tessellations of pre-stressed contractile unit cells that soften in water at rates prescribed locally by mesostructure geometry. The ensuing midplane contraction is coupled to the formation of encoded curvatures. We propose an inverse design tool based on a data-driven model for unit cells’ temporal responses."}],"intvolume":" 11","status":"public","title":"Programming temporal morphing of self-actuated shells","ddc":["000"],"_id":"7262","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","oa_version":"Published Version","file":[{"creator":"rguseino","file_size":1315270,"content_type":"application/pdf","file_name":"2020_NatureComm_Guseinov.pdf","access_level":"open_access","date_created":"2020-01-15T14:35:34Z","date_updated":"2020-07-14T12:47:55Z","checksum":"7db23fef2f4cda712f17f1004116ddff","file_id":"7336","relation":"main_file"}],"keyword":["Design","Synthesis and processing","Mechanical engineering","Polymers"],"scopus_import":"1","has_accepted_license":"1","article_processing_charge":"No","day":"13","article_type":"original","citation":{"ista":"Guseinov R, McMahan C, Perez Rodriguez J, Daraio C, Bickel B. 2020. Programming temporal morphing of self-actuated shells. Nature Communications. 11, 237.","apa":"Guseinov, R., McMahan, C., Perez Rodriguez, J., Daraio, C., & Bickel, B. (2020). Programming temporal morphing of self-actuated shells. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-019-14015-2","ieee":"R. Guseinov, C. McMahan, J. Perez Rodriguez, C. Daraio, and B. Bickel, “Programming temporal morphing of self-actuated shells,” Nature Communications, vol. 11. Springer Nature, 2020.","ama":"Guseinov R, McMahan C, Perez Rodriguez J, Daraio C, Bickel B. Programming temporal morphing of self-actuated shells. Nature Communications. 2020;11. doi:10.1038/s41467-019-14015-2","chicago":"Guseinov, Ruslan, Connor McMahan, Jesus Perez Rodriguez, Chiara Daraio, and Bernd Bickel. “Programming Temporal Morphing of Self-Actuated Shells.” Nature Communications. Springer Nature, 2020. https://doi.org/10.1038/s41467-019-14015-2.","mla":"Guseinov, Ruslan, et al. “Programming Temporal Morphing of Self-Actuated Shells.” Nature Communications, vol. 11, 237, Springer Nature, 2020, doi:10.1038/s41467-019-14015-2.","short":"R. Guseinov, C. McMahan, J. Perez Rodriguez, C. Daraio, B. Bickel, Nature Communications 11 (2020)."},"publication":"Nature Communications","date_published":"2020-01-13T00:00:00Z","article_number":"237","ec_funded":1,"file_date_updated":"2020-07-14T12:47:55Z","publisher":"Springer Nature","department":[{"_id":"BeBi"}],"publication_status":"published","year":"2020","volume":11,"date_updated":"2024-02-21T12:45:02Z","date_created":"2020-01-13T16:54:26Z","related_material":{"link":[{"url":"https://ist.ac.at/en/news/geometry-meets-time/","relation":"press_release","description":"News on IST Homepage"}],"record":[{"relation":"dissertation_contains","status":"public","id":"8366"},{"relation":"research_data","status":"public","id":"7154"}]},"author":[{"full_name":"Guseinov, Ruslan","last_name":"Guseinov","first_name":"Ruslan","orcid":"0000-0001-9819-5077","id":"3AB45EE2-F248-11E8-B48F-1D18A9856A87"},{"full_name":"McMahan, Connor","first_name":"Connor","last_name":"McMahan"},{"id":"2DC83906-F248-11E8-B48F-1D18A9856A87","last_name":"Perez Rodriguez","first_name":"Jesus","full_name":"Perez Rodriguez, Jesus"},{"last_name":"Daraio","first_name":"Chiara","full_name":"Daraio, Chiara"},{"full_name":"Bickel, Bernd","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel"}],"publication_identifier":{"issn":["2041-1723"]},"month":"01","project":[{"name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020","_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411"},{"call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767"}],"quality_controlled":"1","isi":1,"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"external_id":{"isi":["000511916800015"]},"oa":1,"language":[{"iso":"eng"}],"doi":"10.1038/s41467-019-14015-2"},{"ec_funded":1,"author":[{"full_name":"Jeschke, Stefan","id":"44D6411A-F248-11E8-B48F-1D18A9856A87","last_name":"Jeschke","first_name":"Stefan"},{"full_name":"Hafner, Christian","id":"400429CC-F248-11E8-B48F-1D18A9856A87","last_name":"Hafner","first_name":"Christian"},{"full_name":"Chentanez, Nuttapong","first_name":"Nuttapong","last_name":"Chentanez"},{"last_name":"Macklin","first_name":"Miles","full_name":"Macklin, Miles"},{"first_name":"Matthias","last_name":"Müller-Fischer","full_name":"Müller-Fischer, Matthias"},{"full_name":"Wojtan, Christopher J","first_name":"Christopher J","last_name":"Wojtan","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6646-5546"}],"date_updated":"2024-02-28T13:58:11Z","date_created":"2020-11-17T10:47:48Z","volume":39,"year":"2020","publication_status":"published","department":[{"_id":"ChWo"},{"_id":"BeBi"}],"publisher":"Wiley","month":"12","conference":{"name":"SCA: Symposium on Computer Animation","location":"Online Symposium","start_date":"2020-10-06","end_date":"2020-10-09"},"doi":"10.1111/cgf.14100","language":[{"iso":"eng"}],"external_id":{"isi":["000591780400005"]},"quality_controlled":"1","isi":1,"project":[{"name":"Efficient Simulation of Natural Phenomena at Extremely Large Scales","call_identifier":"H2020","_id":"2533E772-B435-11E9-9278-68D0E5697425","grant_number":"638176"},{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling"}],"abstract":[{"lang":"eng","text":"The “procedural” approach to animating ocean waves is the dominant algorithm for animating larger bodies of water in\r\ninteractive applications as well as in off-line productions — it provides high visual quality with a low computational demand. In this paper, we widen the applicability of procedural water wave animation with an extension that guarantees the satisfaction of boundary conditions imposed by terrain while still approximating physical wave behavior. In combination with a particle system that models wave breaking, foam, and spray, this allows us to naturally model waves interacting with beaches and rocks. Our system is able to animate waves at large scales at interactive frame rates on a commodity PC."}],"issue":"8","type":"journal_article","oa_version":"None","user_id":"2EBD1598-F248-11E8-B48F-1D18A9856A87","_id":"8766","status":"public","title":"Making procedural water waves boundary-aware","intvolume":" 39","day":"01","article_processing_charge":"No","scopus_import":"1","date_published":"2020-12-01T00:00:00Z","publication":"Computer Graphics forum","citation":{"short":"S. Jeschke, C. Hafner, N. Chentanez, M. Macklin, M. Müller-Fischer, C. Wojtan, Computer Graphics Forum 39 (2020) 47–54.","mla":"Jeschke, Stefan, et al. “Making Procedural Water Waves Boundary-Aware.” Computer Graphics Forum, vol. 39, no. 8, Wiley, 2020, pp. 47–54, doi:10.1111/cgf.14100.","chicago":"Jeschke, Stefan, Christian Hafner, Nuttapong Chentanez, Miles Macklin, Matthias Müller-Fischer, and Chris Wojtan. “Making Procedural Water Waves Boundary-Aware.” Computer Graphics Forum. Wiley, 2020. https://doi.org/10.1111/cgf.14100.","ama":"Jeschke S, Hafner C, Chentanez N, Macklin M, Müller-Fischer M, Wojtan C. Making procedural water waves boundary-aware. Computer Graphics forum. 2020;39(8):47-54. doi:10.1111/cgf.14100","ieee":"S. Jeschke, C. Hafner, N. Chentanez, M. Macklin, M. Müller-Fischer, and C. Wojtan, “Making procedural water waves boundary-aware,” Computer Graphics forum, vol. 39, no. 8. Wiley, pp. 47–54, 2020.","apa":"Jeschke, S., Hafner, C., Chentanez, N., Macklin, M., Müller-Fischer, M., & Wojtan, C. (2020). Making procedural water waves boundary-aware. Computer Graphics Forum. Online Symposium: Wiley. https://doi.org/10.1111/cgf.14100","ista":"Jeschke S, Hafner C, Chentanez N, Macklin M, Müller-Fischer M, Wojtan C. 2020. Making procedural water waves boundary-aware. Computer Graphics forum. 39(8), 47–54."},"article_type":"original","page":"47-54"},{"scopus_import":"1","day":"04","article_processing_charge":"No","has_accepted_license":"1","publication":"ACM Transactions on Graphics","citation":{"chicago":"Sumin, Denis, Tim Weyrich, Tobias Rittig, Vahid Babaei, Thomas Nindel, Alexander Wilkie, Piotr Didyk, Bernd Bickel, Jaroslav Křivánek, and Karol Myszkowski. “Geometry-Aware Scattering Compensation for 3D Printing.” ACM Transactions on Graphics. ACM, 2019. https://doi.org/10.1145/3306346.3322992.","short":"D. Sumin, T. Weyrich, T. Rittig, V. Babaei, T. Nindel, A. Wilkie, P. Didyk, B. Bickel, J. Křivánek, K. Myszkowski, ACM Transactions on Graphics 38 (2019).","mla":"Sumin, Denis, et al. “Geometry-Aware Scattering Compensation for 3D Printing.” ACM Transactions on Graphics, vol. 38, no. 4, 111, ACM, 2019, doi:10.1145/3306346.3322992.","apa":"Sumin, D., Weyrich, T., Rittig, T., Babaei, V., Nindel, T., Wilkie, A., … Myszkowski, K. (2019). Geometry-aware scattering compensation for 3D printing. ACM Transactions on Graphics. ACM. https://doi.org/10.1145/3306346.3322992","ieee":"D. Sumin et al., “Geometry-aware scattering compensation for 3D printing,” ACM Transactions on Graphics, vol. 38, no. 4. ACM, 2019.","ista":"Sumin D, Weyrich T, Rittig T, Babaei V, Nindel T, Wilkie A, Didyk P, Bickel B, Křivánek J, Myszkowski K. 2019. Geometry-aware scattering compensation for 3D printing. ACM Transactions on Graphics. 38(4), 111.","ama":"Sumin D, Weyrich T, Rittig T, et al. Geometry-aware scattering compensation for 3D printing. ACM Transactions on Graphics. 2019;38(4). doi:10.1145/3306346.3322992"},"date_published":"2019-07-04T00:00:00Z","type":"journal_article","abstract":[{"lang":"eng","text":"Commercially available full-color 3D printing allows for detailed control of material deposition in a volume, but an exact reproduction of a target surface appearance is hampered by the strong subsurface scattering that causes nontrivial volumetric cross-talk at the print surface. Previous work showed how an iterative optimization scheme based on accumulating absorptive materials at the surface can be used to find a volumetric distribution of print materials that closely approximates a given target appearance.\r\n\r\nIn this work, we first revisit the assumption that pushing the absorptive materials to the surface results in minimal volumetric cross-talk. We design a full-fledged optimization on a small domain for this task and confirm this previously reported heuristic. Then, we extend the above approach that is critically limited to color reproduction on planar surfaces, to arbitrary 3D shapes. Our method enables high-fidelity color texture reproduction on 3D prints by effectively compensating for internal light scattering within arbitrarily shaped objects. In addition, we propose a content-aware gamut mapping that significantly improves color reproduction for the pathological case of thin geometric features. Using a wide range of sample objects with complex textures and geometries, we demonstrate color reproduction whose fidelity is superior to state-of-the-art drivers for color 3D printers."}],"issue":"4","status":"public","title":"Geometry-aware scattering compensation for 3D printing","ddc":["000"],"intvolume":" 38","_id":"6660","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","oa_version":"Submitted Version","file":[{"file_id":"6669","relation":"main_file","checksum":"43c2019d6b48ed9c56e31686c4c2d1f5","date_created":"2019-07-24T07:36:08Z","date_updated":"2020-07-14T12:47:36Z","access_level":"open_access","file_name":"2019_ACM_Sumin_AuthorVersion.pdf","creator":"dernst","file_size":10109800,"content_type":"application/pdf"},{"file_size":11051245,"content_type":"application/zip","creator":"dernst","file_name":"sumin19geometry-aware-suppl.zip","access_level":"open_access","date_created":"2019-10-11T06:51:07Z","date_updated":"2020-07-14T12:47:36Z","checksum":"f80f365a04e35855fa467ea7ab26b16c","relation":"supplementary_material","file_id":"6938"}],"month":"07","publication_identifier":{"issn":["0730-0301"]},"isi":1,"quality_controlled":"1","project":[{"name":"Distributed 3D Object Design","call_identifier":"H2020","_id":"2508E324-B435-11E9-9278-68D0E5697425","grant_number":"642841"},{"call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425"}],"oa":1,"external_id":{"isi":["000475740600085"]},"language":[{"iso":"eng"}],"doi":"10.1145/3306346.3322992","article_number":"111","file_date_updated":"2020-07-14T12:47:36Z","ec_funded":1,"publication_status":"published","publisher":"ACM","department":[{"_id":"BeBi"}],"year":"2019","date_updated":"2023-08-29T06:40:49Z","date_created":"2019-07-22T07:22:28Z","volume":38,"author":[{"full_name":"Sumin, Denis","first_name":"Denis","last_name":"Sumin"},{"first_name":"Tim","last_name":"Weyrich","full_name":"Weyrich, Tim"},{"full_name":"Rittig, Tobias","last_name":"Rittig","first_name":"Tobias"},{"first_name":"Vahid","last_name":"Babaei","full_name":"Babaei, Vahid"},{"first_name":"Thomas","last_name":"Nindel","full_name":"Nindel, Thomas"},{"first_name":"Alexander","last_name":"Wilkie","full_name":"Wilkie, Alexander"},{"full_name":"Didyk, Piotr","first_name":"Piotr","last_name":"Didyk"},{"id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel","full_name":"Bickel, Bernd"},{"full_name":"Křivánek, Jaroslav","last_name":"Křivánek","first_name":"Jaroslav"},{"full_name":"Myszkowski, Karol","first_name":"Karol","last_name":"Myszkowski"}]},{"oa":1,"external_id":{"isi":["000475740600084"]},"isi":1,"quality_controlled":"1","project":[{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling"}],"doi":"10.1145/3306346.3322981","language":[{"iso":"eng"}],"month":"07","publication_identifier":{"issn":["0730-0301"]},"year":"2019","publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"ACM","author":[{"full_name":"Alderighi, Thomas","last_name":"Alderighi","first_name":"Thomas"},{"full_name":"Malomo, Luigi","last_name":"Malomo","first_name":"Luigi"},{"first_name":"Daniela","last_name":"Giorgi","full_name":"Giorgi, Daniela"},{"full_name":"Bickel, Bernd","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel"},{"first_name":"Paolo","last_name":"Cignoni","full_name":"Cignoni, Paolo"},{"full_name":"Pietroni, Nico","first_name":"Nico","last_name":"Pietroni"}],"related_material":{"link":[{"relation":"supplementary_material","description":"YouTube Video","url":"https://youtu.be/SO349S8-x_w"}]},"date_updated":"2023-08-29T06:35:52Z","date_created":"2019-07-19T06:18:15Z","volume":38,"article_number":"110","file_date_updated":"2020-07-14T12:47:35Z","ec_funded":1,"publication":"ACM Transactions on Graphics","citation":{"ieee":"T. Alderighi, L. Malomo, D. Giorgi, B. Bickel, P. Cignoni, and N. Pietroni, “Volume-aware design of composite molds,” ACM Transactions on Graphics, vol. 38, no. 4. ACM, 2019.","apa":"Alderighi, T., Malomo, L., Giorgi, D., Bickel, B., Cignoni, P., & Pietroni, N. (2019). Volume-aware design of composite molds. ACM Transactions on Graphics. ACM. https://doi.org/10.1145/3306346.3322981","ista":"Alderighi T, Malomo L, Giorgi D, Bickel B, Cignoni P, Pietroni N. 2019. Volume-aware design of composite molds. ACM Transactions on Graphics. 38(4), 110.","ama":"Alderighi T, Malomo L, Giorgi D, Bickel B, Cignoni P, Pietroni N. Volume-aware design of composite molds. ACM Transactions on Graphics. 2019;38(4). doi:10.1145/3306346.3322981","chicago":"Alderighi, Thomas, Luigi Malomo, Daniela Giorgi, Bernd Bickel, Paolo Cignoni, and Nico Pietroni. “Volume-Aware Design of Composite Molds.” ACM Transactions on Graphics. ACM, 2019. https://doi.org/10.1145/3306346.3322981.","short":"T. Alderighi, L. Malomo, D. Giorgi, B. Bickel, P. Cignoni, N. Pietroni, ACM Transactions on Graphics 38 (2019).","mla":"Alderighi, Thomas, et al. “Volume-Aware Design of Composite Molds.” ACM Transactions on Graphics, vol. 38, no. 4, 110, ACM, 2019, doi:10.1145/3306346.3322981."},"date_published":"2019-07-01T00:00:00Z","scopus_import":"1","day":"01","article_processing_charge":"No","has_accepted_license":"1","_id":"6650","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","ddc":["000"],"status":"public","title":"Volume-aware design of composite molds","intvolume":" 38","oa_version":"Submitted Version","file":[{"file_name":"2019_ACM_Alderighi_AuthorVersion.pdf","access_level":"open_access","creator":"dernst","content_type":"application/pdf","file_size":74316182,"file_id":"6651","relation":"main_file","date_created":"2019-07-19T06:18:53Z","date_updated":"2020-07-14T12:47:35Z","checksum":"b4562af94672b44d2a501046427412af"}],"type":"journal_article","abstract":[{"lang":"eng","text":"We propose a novel technique for the automatic design of molds to cast highly complex shapes. The technique generates composite, two-piece molds. Each mold piece is made up of a hard plastic shell and a flexible silicone part. Thanks to the thin, soft, and smartly shaped silicone part, which is kept in place by a hard plastic shell, we can cast objects of unprecedented complexity. An innovative algorithm based on a volumetric analysis defines the layout of the internal cuts in the silicone mold part. Our approach can robustly handle thin protruding features and intertwined topologies that have caused previous methods to fail. We compare our results with state of the art techniques, and we demonstrate the casting of shapes with extremely complex geometry."}],"issue":"4"},{"author":[{"first_name":"Francesco","last_name":"Laccone","full_name":"Laccone, Francesco"},{"first_name":"Luigi","last_name":"Malomo","full_name":"Malomo, Luigi"},{"last_name":"Perez Rodriguez","first_name":"Jesus","id":"2DC83906-F248-11E8-B48F-1D18A9856A87","full_name":"Perez Rodriguez, Jesus"},{"first_name":"Nico","last_name":"Pietroni","full_name":"Pietroni, Nico"},{"full_name":"Ponchio, Federico","first_name":"Federico","last_name":"Ponchio"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Cignoni, Paolo","last_name":"Cignoni","first_name":"Paolo"}],"oa_version":"None","date_created":"2021-03-21T23:01:21Z","date_updated":"2023-09-08T11:21:54Z","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","_id":"9261","year":"2019","department":[{"_id":"BeBi"}],"publisher":"International Center for Numerical Methods in Engineering","publication_status":"published","title":"FlexMaps Pavilion: A twisted arc made of mesostructured flat flexible panels","status":"public","abstract":[{"text":"Bending-active structures are able to efficiently produce complex curved shapes starting from flat panels. The desired deformation of the panels derives from the proper selection of their elastic properties. Optimized panels, called FlexMaps, are designed such that, once they are bent and assembled, the resulting static equilibrium configuration matches a desired input 3D shape. The FlexMaps elastic properties are controlled by locally varying spiraling geometric mesostructures, which are optimized in size and shape to match the global curvature (i.e., bending requests) of the target shape. The design pipeline starts from a quad mesh representing the input 3D shape, which defines the edge size and the total amount of spirals: every quad will embed one spiral. Then, an optimization algorithm tunes the geometry of the spirals by using a simplified pre-computed rod model. This rod model is derived from a non-linear regression algorithm which approximates the non-linear behavior of solid FEM spiral models subject to hundreds of load combinations. This innovative pipeline has been applied to the project of a lightweight plywood pavilion named FlexMaps Pavilion, which is a single-layer piecewise twisted arc that fits a bounding box of 3.90x3.96x3.25 meters.","lang":"eng"}],"type":"conference","date_published":"2019-10-10T00:00:00Z","conference":{"name":"IASS: International Association for Shell and Spatial Structures","end_date":"2019-10-10","start_date":"2019-10-07","location":"Barcelona, Spain"},"language":[{"iso":"eng"}],"citation":{"ama":"Laccone F, Malomo L, Perez Rodriguez J, et al. FlexMaps Pavilion: A twisted arc made of mesostructured flat flexible panels. In: IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE. International Center for Numerical Methods in Engineering; 2019:509-515.","ista":"Laccone F, Malomo L, Perez Rodriguez J, Pietroni N, Ponchio F, Bickel B, Cignoni P. 2019. FlexMaps Pavilion: A twisted arc made of mesostructured flat flexible panels. IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE. IASS: International Association for Shell and Spatial Structures, 509–515.","apa":"Laccone, F., Malomo, L., Perez Rodriguez, J., Pietroni, N., Ponchio, F., Bickel, B., & Cignoni, P. (2019). FlexMaps Pavilion: A twisted arc made of mesostructured flat flexible panels. In IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE (pp. 509–515). Barcelona, Spain: International Center for Numerical Methods in Engineering.","ieee":"F. Laccone et al., “FlexMaps Pavilion: A twisted arc made of mesostructured flat flexible panels,” in IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE, Barcelona, Spain, 2019, pp. 509–515.","mla":"Laccone, Francesco, et al. “FlexMaps Pavilion: A Twisted Arc Made of Mesostructured Flat Flexible Panels.” IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE, International Center for Numerical Methods in Engineering, 2019, pp. 509–15.","short":"F. Laccone, L. Malomo, J. Perez Rodriguez, N. Pietroni, F. Ponchio, B. Bickel, P. Cignoni, in:, IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE, International Center for Numerical Methods in Engineering, 2019, pp. 509–515.","chicago":"Laccone, Francesco, Luigi Malomo, Jesus Perez Rodriguez, Nico Pietroni, Federico Ponchio, Bernd Bickel, and Paolo Cignoni. “FlexMaps Pavilion: A Twisted Arc Made of Mesostructured Flat Flexible Panels.” In IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE, 509–15. International Center for Numerical Methods in Engineering, 2019."},"external_id":{"isi":["000563497600059"]},"publication":"IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE","page":"509-515","isi":1,"quality_controlled":"1","publication_identifier":{"issn":["2518-6582"],"isbn":["9788412110104"]},"article_processing_charge":"No","day":"10","month":"10","scopus_import":"1"},{"type":"research_data","file_date_updated":"2020-07-14T12:47:50Z","ec_funded":1,"title":"Supplementary data for \"Programming temporal morphing of self-actuated shells\"","status":"public","ddc":["000"],"publisher":"Institute of Science and Technology Austria","department":[{"_id":"BeBi"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"7154","year":"2019","date_created":"2019-12-09T07:52:46Z","date_updated":"2024-02-21T12:45:03Z","file":[{"checksum":"155133e6e188e85b3c0676a5e70b9341","date_updated":"2020-07-14T12:47:50Z","date_created":"2019-12-09T07:52:17Z","file_id":"7155","relation":"main_file","creator":"dernst","content_type":"application/x-zip-compressed","file_size":65307107,"access_level":"open_access","file_name":"temporal_morphing_supp_data.zip"}],"oa_version":"Published Version","author":[{"full_name":"Guseinov, Ruslan","id":"3AB45EE2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-9819-5077","first_name":"Ruslan","last_name":"Guseinov"}],"related_material":{"record":[{"status":"deleted","relation":"used_in_publication","id":"8433"},{"id":"7262","status":"public","relation":"used_in_publication"}]},"contributor":[{"id":"3AB45EE2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-9819-5077","first_name":"Ruslan","last_name":"Guseinov"},{"last_name":"McMahan","first_name":"Connor"},{"id":"2DC83906-F248-11E8-B48F-1D18A9856A87","first_name":"Jesus","last_name":"Perez Rodriguez"},{"first_name":"Chiara","last_name":"Daraio"},{"last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"}],"day":"06","month":"12","has_accepted_license":"1","article_processing_charge":"No","project":[{"call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships","grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425"}],"citation":{"short":"R. Guseinov, (2019).","mla":"Guseinov, Ruslan. Supplementary Data for “Programming Temporal Morphing of Self-Actuated Shells.” Institute of Science and Technology Austria, 2019, doi:10.15479/AT:ISTA:7154.","chicago":"Guseinov, Ruslan. “Supplementary Data for ‘Programming Temporal Morphing of Self-Actuated Shells.’” Institute of Science and Technology Austria, 2019. https://doi.org/10.15479/AT:ISTA:7154.","ama":"Guseinov R. Supplementary data for “Programming temporal morphing of self-actuated shells.” 2019. doi:10.15479/AT:ISTA:7154","apa":"Guseinov, R. (2019). Supplementary data for “Programming temporal morphing of self-actuated shells.” Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:7154","ieee":"R. Guseinov, “Supplementary data for ‘Programming temporal morphing of self-actuated shells.’” Institute of Science and Technology Austria, 2019.","ista":"Guseinov R. 2019. Supplementary data for ‘Programming temporal morphing of self-actuated shells’, Institute of Science and Technology Austria, 10.15479/AT:ISTA:7154."},"tmp":{"short":"CC0 (1.0)","image":"/images/cc_0.png","legal_code_url":"https://creativecommons.org/publicdomain/zero/1.0/legalcode","name":"Creative Commons Public Domain Dedication (CC0 1.0)"},"oa":1,"doi":"10.15479/AT:ISTA:7154","date_published":"2019-12-06T00:00:00Z"},{"title":"X-CAD: Optimizing CAD Models with Extended Finite Elements","status":"public","ddc":["000"],"intvolume":" 38","_id":"7117","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","file":[{"file_id":"7119","title":"X-CAD Supplemental Material","relation":"supplementary_material","checksum":"56a2fb019adcb556d2b022f5e5acb68c","date_created":"2019-11-26T14:24:26Z","date_updated":"2020-07-14T12:47:49Z","access_level":"open_access","file_name":"xcad_sup_mat_siga19.pdf","creator":"bbickel","content_type":"application/pdf","file_size":1673176},{"checksum":"5f29d76aceb5102e766cbab9b17d776e","date_created":"2019-11-26T14:24:27Z","date_updated":"2020-07-14T12:47:49Z","relation":"main_file","title":"X-CAD: Optimizing CAD Models with Extended Finite Elements","file_id":"7120","content_type":"application/pdf","file_size":14563618,"creator":"bbickel","access_level":"open_access","file_name":"XCAD_authors_version.pdf","description":"This is the author's version of the work."},{"relation":"main_file","file_id":"7121","date_updated":"2020-07-14T12:47:49Z","date_created":"2019-11-26T14:27:37Z","checksum":"0d31e123286cbec9e28b2001c2bb0d55","file_name":"XCAD_video.mp4","access_level":"open_access","content_type":"video/mp4","file_size":259979129,"creator":"bbickel"}],"oa_version":"Submitted Version","type":"journal_article","abstract":[{"lang":"eng","text":"We propose a novel generic shape optimization method for CAD models based on the eXtended Finite Element Method (XFEM). Our method works directly on the intersection between the model and a regular simulation grid, without the need to mesh or remesh, thus removing a bottleneck of classical shape optimization strategies. This is made possible by a novel hierarchical integration scheme that accurately integrates finite element quantities with sub-element precision. For optimization, we efficiently compute analytical shape derivatives of the entire framework, from model intersection to integration rule generation and XFEM simulation. Moreover, we describe a differentiable projection of shape parameters onto a constraint manifold spanned by user-specified shape preservation, consistency, and manufacturability constraints. We demonstrate the utility of our approach by optimizing mass distribution, strength-to-weight ratio, and inverse elastic shape design objectives directly on parameterized 3D CAD models."}],"issue":"6","article_type":"original","publication":"ACM Transactions on Graphics","citation":{"ieee":"C. Hafner, C. Schumacher, E. Knoop, T. Auzinger, B. Bickel, and M. Bächer, “X-CAD: Optimizing CAD Models with Extended Finite Elements,” ACM Transactions on Graphics, vol. 38, no. 6. ACM, 2019.","apa":"Hafner, C., Schumacher, C., Knoop, E., Auzinger, T., Bickel, B., & Bächer, M. (2019). X-CAD: Optimizing CAD Models with Extended Finite Elements. ACM Transactions on Graphics. ACM. https://doi.org/10.1145/3355089.3356576","ista":"Hafner C, Schumacher C, Knoop E, Auzinger T, Bickel B, Bächer M. 2019. X-CAD: Optimizing CAD Models with Extended Finite Elements. ACM Transactions on Graphics. 38(6), 157.","ama":"Hafner C, Schumacher C, Knoop E, Auzinger T, Bickel B, Bächer M. X-CAD: Optimizing CAD Models with Extended Finite Elements. ACM Transactions on Graphics. 2019;38(6). doi:10.1145/3355089.3356576","chicago":"Hafner, Christian, Christian Schumacher, Espen Knoop, Thomas Auzinger, Bernd Bickel, and Moritz Bächer. “X-CAD: Optimizing CAD Models with Extended Finite Elements.” ACM Transactions on Graphics. ACM, 2019. https://doi.org/10.1145/3355089.3356576.","short":"C. Hafner, C. Schumacher, E. Knoop, T. Auzinger, B. Bickel, M. Bächer, ACM Transactions on Graphics 38 (2019).","mla":"Hafner, Christian, et al. “X-CAD: Optimizing CAD Models with Extended Finite Elements.” ACM Transactions on Graphics, vol. 38, no. 6, 157, ACM, 2019, doi:10.1145/3355089.3356576."},"date_published":"2019-11-06T00:00:00Z","scopus_import":"1","day":"06","has_accepted_license":"1","article_processing_charge":"No","publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"ACM","year":"2019","date_updated":"2024-03-28T23:30:47Z","date_created":"2019-11-26T14:22:09Z","volume":38,"author":[{"full_name":"Hafner, Christian","last_name":"Hafner","first_name":"Christian","id":"400429CC-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Christian","last_name":"Schumacher","full_name":"Schumacher, Christian"},{"last_name":"Knoop","first_name":"Espen","full_name":"Knoop, Espen"},{"full_name":"Auzinger, Thomas","id":"4718F954-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1546-3265","first_name":"Thomas","last_name":"Auzinger"},{"last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","full_name":"Bickel, Bernd"},{"last_name":"Bächer","first_name":"Moritz","full_name":"Bächer, Moritz"}],"related_material":{"record":[{"id":"12897","relation":"dissertation_contains","status":"public"}]},"article_number":"157","file_date_updated":"2020-07-14T12:47:49Z","ec_funded":1,"quality_controlled":"1","isi":1,"project":[{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling"}],"external_id":{"isi":["000498397300007"]},"oa":1,"language":[{"iso":"eng"}],"doi":"10.1145/3355089.3356576","month":"11","publication_identifier":{"issn":["0730-0301"]}},{"file":[{"relation":"main_file","file_id":"5334","date_updated":"2020-07-14T12:45:59Z","date_created":"2018-12-12T10:18:14Z","checksum":"dcdcc955a4c1c6d2599aeebb97d2e7b9","file_name":"IST-2018-1024-v1+1_NanoStructColor-Auzinger-paper.pdf","access_level":"open_access","file_size":10751684,"content_type":"application/pdf","creator":"system"},{"file_id":"5335","relation":"main_file","checksum":"cae52b3a8d5e97be84771cd61ea2f75e","date_updated":"2020-07-14T12:45:59Z","date_created":"2018-12-12T10:18:15Z","access_level":"open_access","file_name":"IST-2018-1024-v1+2_NanoStructColor-Auzinger-supplemental.pdf","creator":"system","content_type":"application/pdf","file_size":20755095},{"creator":"system","content_type":"image/jpeg","file_size":2186944,"file_name":"IST-2018-1024-v1+3_NanoStructColor-Auzinger-image.jpg","access_level":"open_access","date_updated":"2020-07-14T12:45:59Z","date_created":"2018-12-12T10:18:16Z","checksum":"76dd90648f75779d3f64e324b6daaffe","file_id":"5336","relation":"main_file"},{"file_id":"5337","relation":"main_file","date_created":"2018-12-12T10:18:17Z","date_updated":"2020-07-14T12:45:59Z","checksum":"c3a5b775a0ecdb20ccefb8d9646ec140","file_name":"IST-2018-1024-v1+4_NanoStructColor-Auzinger-blueprint.7z","access_level":"open_access","creator":"system","content_type":"application/x-7z-compressed","file_size":2734352},{"file_name":"IST-2018-1024-v2+1_NanoStructColor-Auzinger-paper.pdf","access_level":"open_access","file_size":10751684,"content_type":"application/pdf","creator":"system","relation":"main_file","file_id":"5338","date_created":"2018-12-12T10:18:18Z","date_updated":"2020-07-14T12:45:59Z","checksum":"dcdcc955a4c1c6d2599aeebb97d2e7b9"},{"checksum":"76dd90648f75779d3f64e324b6daaffe","date_created":"2018-12-12T10:18:19Z","date_updated":"2020-07-14T12:45:59Z","file_id":"5339","relation":"main_file","creator":"system","file_size":2186944,"content_type":"image/jpeg","access_level":"open_access","file_name":"IST-2018-1024-v2+3_NanoStructColor-Auzinger-image.jpg"},{"date_created":"2018-12-12T10:18:20Z","date_updated":"2020-07-14T12:45:59Z","checksum":"c3a5b775a0ecdb20ccefb8d9646ec140","relation":"main_file","file_id":"5340","content_type":"application/x-7z-compressed","file_size":2734352,"creator":"system","file_name":"IST-2018-1024-v2+4_NanoStructColor-Auzinger-blueprint.7z","access_level":"open_access"},{"file_id":"5341","relation":"main_file","checksum":"667e91b686db41e44d855a4fb2137402","date_created":"2018-12-12T10:18:21Z","date_updated":"2020-07-14T12:45:59Z","access_level":"open_access","file_name":"IST-2018-1024-v2+5_NanoStructColor-Auzinger-supplemental.pdf","creator":"system","content_type":"application/pdf","file_size":20755762},{"access_level":"open_access","file_name":"IST-2018-1024-v3+1_NanoStructColor-Auzinger-paper.pdf","file_size":10751684,"content_type":"application/pdf","creator":"system","relation":"main_file","file_id":"5342","checksum":"dcdcc955a4c1c6d2599aeebb97d2e7b9","date_updated":"2020-07-14T12:45:59Z","date_created":"2018-12-12T10:18:22Z"},{"file_name":"IST-2018-1024-v3+3_NanoStructColor-Auzinger-image.jpg","access_level":"open_access","creator":"system","content_type":"image/jpeg","file_size":2186944,"file_id":"5343","relation":"main_file","date_created":"2018-12-12T10:18:22Z","date_updated":"2020-07-14T12:45:59Z","checksum":"76dd90648f75779d3f64e324b6daaffe"},{"file_name":"IST-2018-1024-v3+4_NanoStructColor-Auzinger-blueprint.7z","access_level":"open_access","creator":"system","content_type":"application/x-7z-compressed","file_size":2734352,"file_id":"5344","relation":"main_file","date_updated":"2020-07-14T12:45:59Z","date_created":"2018-12-12T10:18:23Z","checksum":"c3a5b775a0ecdb20ccefb8d9646ec140"},{"checksum":"667e91b686db41e44d855a4fb2137402","date_updated":"2020-07-14T12:45:59Z","date_created":"2018-12-12T10:18:24Z","relation":"main_file","file_id":"5345","content_type":"application/pdf","file_size":20755762,"creator":"system","access_level":"open_access","file_name":"IST-2018-1024-v3+5_NanoStructColor-Auzinger-supplemental.pdf"},{"relation":"main_file","file_id":"5346","date_created":"2018-12-12T10:18:25Z","date_updated":"2020-07-14T12:45:59Z","checksum":"72dce35388fb1aa7953df4d9ae3d02f1","file_name":"IST-2018-1024-v3+6_NanoStructColor-Auzinger-presentation.pptx","access_level":"open_access","content_type":"application/vnd.openxmlformats-officedocument.presentationml.presentation","file_size":69698068,"creator":"system"}],"oa_version":"Submitted Version","pubrep_id":"1028","title":"Computational design of nanostructural color for additive manufacturing","status":"public","ddc":["000","535","680"],"intvolume":" 37","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","_id":"304","abstract":[{"text":"Additive manufacturing has recently seen drastic improvements in resolution, making it now possible to fabricate features at scales of hundreds or even dozens of nanometers, which previously required very expensive lithographic methods.\r\nAs a result, additive manufacturing now seems poised for optical applications, including those relevant to computer graphics, such as material design, as well as display and imaging applications.\r\n \r\nIn this work, we explore the use of additive manufacturing for generating structural colors, where the structures are designed using a fabrication-aware optimization process.\r\nThis requires a combination of full-wave simulation, a feasible parameterization of the design space, and a tailored optimization procedure.\r\nMany of these components should be re-usable for the design of other optical structures at this scale.\r\n \r\nWe show initial results of material samples fabricated based on our designs.\r\nWhile these suffer from the prototype character of state-of-the-art fabrication hardware, we believe they clearly demonstrate the potential of additive nanofabrication for structural colors and other graphics applications.","lang":"eng"}],"issue":"4","alternative_title":["ACM Transactions on Graphics"],"type":"journal_article","date_published":"2018-08-01T00:00:00Z","publication":"ACM Transactions on Graphics","citation":{"ama":"Auzinger T, Heidrich W, Bickel B. Computational design of nanostructural color for additive manufacturing. ACM Transactions on Graphics. 2018;37(4). doi:10.1145/3197517.3201376","ista":"Auzinger T, Heidrich W, Bickel B. 2018. Computational design of nanostructural color for additive manufacturing. ACM Transactions on Graphics. 37(4), 159.","apa":"Auzinger, T., Heidrich, W., & Bickel, B. (2018). Computational design of nanostructural color for additive manufacturing. ACM Transactions on Graphics. ACM. https://doi.org/10.1145/3197517.3201376","ieee":"T. Auzinger, W. Heidrich, and B. Bickel, “Computational design of nanostructural color for additive manufacturing,” ACM Transactions on Graphics, vol. 37, no. 4. ACM, 2018.","mla":"Auzinger, Thomas, et al. “Computational Design of Nanostructural Color for Additive Manufacturing.” ACM Transactions on Graphics, vol. 37, no. 4, 159, ACM, 2018, doi:10.1145/3197517.3201376.","short":"T. Auzinger, W. Heidrich, B. Bickel, ACM Transactions on Graphics 37 (2018).","chicago":"Auzinger, Thomas, Wolfgang Heidrich, and Bernd Bickel. “Computational Design of Nanostructural Color for Additive Manufacturing.” ACM Transactions on Graphics. ACM, 2018. https://doi.org/10.1145/3197517.3201376."},"day":"01","article_processing_charge":"No","has_accepted_license":"1","scopus_import":"1","date_created":"2018-12-11T11:45:43Z","date_updated":"2023-09-11T12:46:13Z","volume":37,"author":[{"id":"4718F954-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1546-3265","first_name":"Thomas","last_name":"Auzinger","full_name":"Auzinger, Thomas"},{"first_name":"Wolfgang","last_name":"Heidrich","full_name":"Heidrich, Wolfgang"},{"full_name":"Bickel, Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","last_name":"Bickel","first_name":"Bernd"}],"related_material":{"link":[{"url":"https://ist.ac.at/en/news/color-effects-from-transparent-3d-printed-nanostructures/","relation":"press_release","description":"News on IST Homepage"}]},"publication_status":"published","department":[{"_id":"BeBi"}],"publisher":"ACM","year":"2018","acknowledgement":"This work was in part supported by King Abdullah University of Science and Technology Baseline Funding.","file_date_updated":"2020-07-14T12:45:59Z","ec_funded":1,"article_number":"159","language":[{"iso":"eng"}],"doi":"10.1145/3197517.3201376","quality_controlled":"1","isi":1,"project":[{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling"}],"oa":1,"external_id":{"isi":["000448185000120"]},"month":"08"},{"date_published":"2018-08-04T00:00:00Z","publication":"ACM Transaction on Graphics","citation":{"mla":"Nakashima, Kazutaka, et al. “CoreCavity: Interactive Shell Decomposition for Fabrication with Two-Piece Rigid Molds.” ACM Transaction on Graphics, vol. 37, no. 4, 135, ACM, 2018, doi:10.1145/3197517.3201341.","short":"K. Nakashima, T. Auzinger, E. Iarussi, R. Zhang, T. Igarashi, B. Bickel, ACM Transaction on Graphics 37 (2018).","chicago":"Nakashima, Kazutaka, Thomas Auzinger, Emmanuel Iarussi, Ran Zhang, Takeo Igarashi, and Bernd Bickel. “CoreCavity: Interactive Shell Decomposition for Fabrication with Two-Piece Rigid Molds.” ACM Transaction on Graphics. ACM, 2018. https://doi.org/10.1145/3197517.3201341.","ama":"Nakashima K, Auzinger T, Iarussi E, Zhang R, Igarashi T, Bickel B. CoreCavity: Interactive shell decomposition for fabrication with two-piece rigid molds. ACM Transaction on Graphics. 2018;37(4). doi:10.1145/3197517.3201341","ista":"Nakashima K, Auzinger T, Iarussi E, Zhang R, Igarashi T, Bickel B. 2018. CoreCavity: Interactive shell decomposition for fabrication with two-piece rigid molds. ACM Transaction on Graphics. 37(4), 135.","ieee":"K. Nakashima, T. Auzinger, E. Iarussi, R. Zhang, T. Igarashi, and B. Bickel, “CoreCavity: Interactive shell decomposition for fabrication with two-piece rigid molds,” ACM Transaction on Graphics, vol. 37, no. 4. ACM, 2018.","apa":"Nakashima, K., Auzinger, T., Iarussi, E., Zhang, R., Igarashi, T., & Bickel, B. (2018). CoreCavity: Interactive shell decomposition for fabrication with two-piece rigid molds. ACM Transaction on Graphics. ACM. https://doi.org/10.1145/3197517.3201341"},"day":"04","has_accepted_license":"1","article_processing_charge":"No","scopus_import":"1","pubrep_id":"1037","oa_version":"Submitted Version","file":[{"access_level":"open_access","file_name":"IST-2018-1037-v1+1_CoreCavity-AuthorVersion.pdf","content_type":"application/pdf","file_size":104225664,"creator":"system","relation":"main_file","file_id":"5360","checksum":"6a5368bc86c4e1a9fcfe588fd1f14ee8","date_created":"2018-12-12T10:18:38Z","date_updated":"2020-07-14T12:44:38Z"},{"access_level":"open_access","file_name":"IST-2018-1037-v1+2_CoreCavity-Supplemental.zip","content_type":"application/zip","file_size":377743553,"creator":"system","relation":"main_file","file_id":"5361","checksum":"3861e693ba47c51f3ec7b7867d573a61","date_updated":"2020-07-14T12:44:38Z","date_created":"2018-12-12T10:18:39Z"},{"date_updated":"2020-07-14T12:44:38Z","date_created":"2018-12-12T10:18:41Z","checksum":"490040c685ed869536e2a18f5a906b94","relation":"main_file","file_id":"5362","file_size":162634396,"content_type":"video/vnd.objectvideo","creator":"system","file_name":"IST-2018-1037-v1+3_CoreCavity-Video.mp4","access_level":"open_access"},{"checksum":"be7fc8b229adda727419b6504b3b9352","date_updated":"2020-07-14T12:44:38Z","date_created":"2018-12-12T10:18:42Z","file_id":"5363","relation":"main_file","creator":"system","content_type":"image/jpeg","file_size":527972,"access_level":"open_access","file_name":"IST-2018-1037-v1+4_CoreCavity-RepresentativeImage.jpg"}],"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","_id":"12","ddc":["004","516","670"],"title":"CoreCavity: Interactive shell decomposition for fabrication with two-piece rigid molds","status":"public","intvolume":" 37","abstract":[{"text":"Molding is a popular mass production method, in which the initial expenses for the mold are offset by the low per-unit production cost. However, the physical fabrication constraints of the molding technique commonly restrict the shape of moldable objects. For a complex shape, a decomposition of the object into moldable parts is a common strategy to address these constraints, with plastic model kits being a popular and illustrative example. However, conducting such a decomposition requires considerable expertise, and it depends on the technical aspects of the fabrication technique, as well as aesthetic considerations. We present an interactive technique to create such decompositions for two-piece molding, in which each part of the object is cast between two rigid mold pieces. Given the surface description of an object, we decompose its thin-shell equivalent into moldable parts by first performing a coarse decomposition and then utilizing an active contour model for the boundaries between individual parts. Formulated as an optimization problem, the movement of the contours is guided by an energy reflecting fabrication constraints to ensure the moldability of each part. Simultaneously, the user is provided with editing capabilities to enforce aesthetic guidelines. Our interactive interface provides control of the contour positions by allowing, for example, the alignment of part boundaries with object features. Our technique enables a novel workflow, as it empowers novice users to explore the design space, and it generates fabrication-ready two-piece molds that can be used either for casting or industrial injection molding of free-form objects.","lang":"eng"}],"issue":"4","type":"journal_article","doi":"10.1145/3197517.3201341","language":[{"iso":"eng"}],"oa":1,"external_id":{"isi":["000448185000096"]},"isi":1,"quality_controlled":"1","project":[{"_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767","call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling"},{"name":"Distributed 3D Object Design","call_identifier":"H2020","grant_number":"642841","_id":"2508E324-B435-11E9-9278-68D0E5697425"}],"month":"08","author":[{"last_name":"Nakashima","first_name":"Kazutaka","full_name":"Nakashima, Kazutaka"},{"full_name":"Auzinger, Thomas","last_name":"Auzinger","first_name":"Thomas","orcid":"0000-0002-1546-3265","id":"4718F954-F248-11E8-B48F-1D18A9856A87"},{"id":"33F19F16-F248-11E8-B48F-1D18A9856A87","last_name":"Iarussi","first_name":"Emmanuel","full_name":"Iarussi, Emmanuel"},{"full_name":"Zhang, Ran","last_name":"Zhang","first_name":"Ran","orcid":"0000-0002-3808-281X","id":"4DDBCEB0-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Igarashi","first_name":"Takeo","full_name":"Igarashi, Takeo"},{"first_name":"Bernd","last_name":"Bickel","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","full_name":"Bickel, Bernd"}],"related_material":{"link":[{"url":"https://ist.ac.at/en/news/interactive-software-tool-makes-complex-mold-design-simple/","description":"News on IST Homepage","relation":"press_release"}]},"date_updated":"2023-09-11T12:48:09Z","date_created":"2018-12-11T11:44:09Z","volume":37,"year":"2018","publication_status":"published","publisher":"ACM","department":[{"_id":"BeBi"}],"file_date_updated":"2020-07-14T12:44:38Z","publist_id":"8044","ec_funded":1,"article_number":"135"},{"volume":13,"oa_version":"None","date_created":"2018-12-11T11:46:15Z","date_updated":"2023-09-11T14:12:33Z","author":[{"first_name":"Philippe","last_name":"Dodier","full_name":"Dodier, Philippe"},{"first_name":"Josa","last_name":"Frischer","full_name":"Frischer, Josa"},{"full_name":"Wang, Wei","last_name":"Wang","first_name":"Wei"},{"full_name":"Auzinger, Thomas","first_name":"Thomas","last_name":"Auzinger","id":"4718F954-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1546-3265"},{"first_name":"Ammar","last_name":"Mallouhi","full_name":"Mallouhi, Ammar"},{"full_name":"Serles, Wolfgang","first_name":"Wolfgang","last_name":"Serles"},{"full_name":"Gruber, Andreas","last_name":"Gruber","first_name":"Andreas"},{"last_name":"Knosp","first_name":"Engelbert","full_name":"Knosp, Engelbert"},{"last_name":"Bavinzski","first_name":"Gerhard","full_name":"Bavinzski, Gerhard"}],"intvolume":" 13","publisher":"Elsevier","department":[{"_id":"BeBi"}],"title":"Immediate flow disruption as a prognostic factor after flow diverter treatment long term experience with the pipeline embolization device","status":"public","publication_status":"published","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","_id":"398","year":"2018","publist_id":"7431","abstract":[{"lang":"eng","text":"Objective: To report long-term results after Pipeline Embolization Device (PED) implantation, characterize complex and standard aneurysms comprehensively, and introduce a modified flow disruption scale. Methods: We retrospectively reviewed a consecutive series of 40 patients harboring 59 aneurysms treated with 54 PEDs. Aneurysm complexity was assessed using our proposed classification. Immediate angiographic results were analyzed using previously published grading scales and our novel flow disruption scale. Results: According to our new definition, 46 (78%) aneurysms were classified as complex. Most PED interventions were performed in the paraophthalmic and cavernous internal carotid artery segments. Excellent neurologic outcome (modified Rankin Scale 0 and 1) was observed in 94% of patients. Our data showed low permanent procedure-related mortality (0%) and morbidity (3%) rates. Long-term angiographic follow-up showed complete occlusion in 81% and near-total obliteration in a further 14%. Complete obliteration after deployment of a single PED was achieved in all standard aneurysms with 1-year follow-up. Our new scale was an independent predictor of aneurysm occlusion in a multivariable analysis. All aneurysms with a high flow disruption grade showed complete occlusion at follow-up regardless of PED number or aneurysm complexity. Conclusions: Treatment with the PED should be recognized as a primary management strategy for a highly selected cohort with predominantly complex intracranial aneurysms. We further show that a priori assessment of aneurysm complexity and our new postinterventional angiographic flow disruption scale predict occlusion probability and may help to determine the adequate number of per-aneurysm devices."}],"type":"journal_article","language":[{"iso":"eng"}],"date_published":"2018-05-01T00:00:00Z","doi":"10.1016/j.wneu.2018.02.096","page":"e568-e578","isi":1,"quality_controlled":"1","citation":{"ama":"Dodier P, Frischer J, Wang W, et al. Immediate flow disruption as a prognostic factor after flow diverter treatment long term experience with the pipeline embolization device. World Neurosurgery. 2018;13:e568-e578. doi:10.1016/j.wneu.2018.02.096","ieee":"P. Dodier et al., “Immediate flow disruption as a prognostic factor after flow diverter treatment long term experience with the pipeline embolization device,” World Neurosurgery, vol. 13. Elsevier, pp. e568–e578, 2018.","apa":"Dodier, P., Frischer, J., Wang, W., Auzinger, T., Mallouhi, A., Serles, W., … Bavinzski, G. (2018). Immediate flow disruption as a prognostic factor after flow diverter treatment long term experience with the pipeline embolization device. World Neurosurgery. Elsevier. https://doi.org/10.1016/j.wneu.2018.02.096","ista":"Dodier P, Frischer J, Wang W, Auzinger T, Mallouhi A, Serles W, Gruber A, Knosp E, Bavinzski G. 2018. Immediate flow disruption as a prognostic factor after flow diverter treatment long term experience with the pipeline embolization device. World Neurosurgery. 13, e568–e578.","short":"P. Dodier, J. Frischer, W. Wang, T. Auzinger, A. Mallouhi, W. Serles, A. Gruber, E. Knosp, G. Bavinzski, World Neurosurgery 13 (2018) e568–e578.","mla":"Dodier, Philippe, et al. “Immediate Flow Disruption as a Prognostic Factor after Flow Diverter Treatment Long Term Experience with the Pipeline Embolization Device.” World Neurosurgery, vol. 13, Elsevier, 2018, pp. e568–78, doi:10.1016/j.wneu.2018.02.096.","chicago":"Dodier, Philippe, Josa Frischer, Wei Wang, Thomas Auzinger, Ammar Mallouhi, Wolfgang Serles, Andreas Gruber, Engelbert Knosp, and Gerhard Bavinzski. “Immediate Flow Disruption as a Prognostic Factor after Flow Diverter Treatment Long Term Experience with the Pipeline Embolization Device.” World Neurosurgery. Elsevier, 2018. https://doi.org/10.1016/j.wneu.2018.02.096."},"external_id":{"isi":["000432942700070"]},"publication":"World Neurosurgery","article_processing_charge":"No","month":"05","day":"01","scopus_import":"1"},{"doi":"10.1145/3197517.3201325","language":[{"iso":"eng"}],"external_id":{"isi":["000448185000050"]},"oa":1,"project":[{"_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020"}],"quality_controlled":"1","isi":1,"month":"08","related_material":{"link":[{"description":"News on IST Homepage","relation":"press_release","url":"https://ist.ac.at/en/news/new-interactive-machine-learning-tool-makes-car-designs-more-aerodynamic/"}]},"author":[{"last_name":"Umetani","first_name":"Nobuyuki","full_name":"Umetani, Nobuyuki"},{"last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","full_name":"Bickel, Bernd"}],"volume":37,"date_updated":"2023-09-13T08:46:15Z","date_created":"2018-12-11T11:44:06Z","year":"2018","publisher":"ACM","department":[{"_id":"BeBi"}],"publication_status":"published","ec_funded":1,"publist_id":"8053","file_date_updated":"2020-07-14T12:46:22Z","article_number":"89","date_published":"2018-08-04T00:00:00Z","citation":{"ama":"Umetani N, Bickel B. Learning three-dimensional flow for interactive aerodynamic design. ACM Trans Graph. 2018;37(4). doi:10.1145/3197517.3201325","ieee":"N. Umetani and B. Bickel, “Learning three-dimensional flow for interactive aerodynamic design,” ACM Trans. Graph., vol. 37, no. 4. ACM, 2018.","apa":"Umetani, N., & Bickel, B. (2018). Learning three-dimensional flow for interactive aerodynamic design. ACM Trans. Graph. ACM. https://doi.org/10.1145/3197517.3201325","ista":"Umetani N, Bickel B. 2018. Learning three-dimensional flow for interactive aerodynamic design. ACM Trans. Graph. 37(4), 89.","short":"N. Umetani, B. Bickel, ACM Trans. Graph. 37 (2018).","mla":"Umetani, Nobuyuki, and Bernd Bickel. “Learning Three-Dimensional Flow for Interactive Aerodynamic Design.” ACM Trans. Graph., vol. 37, no. 4, 89, ACM, 2018, doi:10.1145/3197517.3201325.","chicago":"Umetani, Nobuyuki, and Bernd Bickel. “Learning Three-Dimensional Flow for Interactive Aerodynamic Design.” ACM Trans. Graph. ACM, 2018. https://doi.org/10.1145/3197517.3201325."},"publication":"ACM Trans. Graph.","has_accepted_license":"1","article_processing_charge":"No","day":"04","scopus_import":"1","pubrep_id":"1049","file":[{"date_updated":"2020-07-14T12:46:22Z","date_created":"2018-12-12T10:16:28Z","checksum":"7a2243668f215821bc6aecad0320079a","file_id":"5216","relation":"main_file","creator":"system","file_size":22803163,"content_type":"application/pdf","file_name":"IST-2018-1049-v1+1_2018_sigg_Learning3DAerodynamics.pdf","access_level":"open_access"}],"oa_version":"Submitted Version","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","_id":"4","intvolume":" 37","ddc":["003","004"],"status":"public","title":"Learning three-dimensional flow for interactive aerodynamic design","issue":"4","abstract":[{"text":"We present a data-driven technique to instantly predict how fluid flows around various three-dimensional objects. Such simulation is useful for computational fabrication and engineering, but is usually computationally expensive since it requires solving the Navier-Stokes equation for many time steps. To accelerate the process, we propose a machine learning framework which predicts aerodynamic forces and velocity and pressure fields given a threedimensional shape input. Handling detailed free-form three-dimensional shapes in a data-driven framework is challenging because machine learning approaches usually require a consistent parametrization of input and output. We present a novel PolyCube maps-based parametrization that can be computed for three-dimensional shapes at interactive rates. This allows us to efficiently learn the nonlinear response of the flow using a Gaussian process regression. We demonstrate the effectiveness of our approach for the interactive design and optimization of a car body.","lang":"eng"}],"type":"journal_article"}]