[{"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","_id":"10148","ddc":["000"],"title":"Capturing tactile properties of real surfaces for haptic reproduction","status":"public","oa_version":"Preprint","file":[{"file_id":"10149","relation":"main_file","date_created":"2021-10-18T07:36:03Z","date_updated":"2021-10-18T07:36:03Z","checksum":"b0b26464df79b3a59e8ed82e4e19ab15","file_name":"degraen-UIST2021_Texture_Appropriation_CR_preprint.pdf","access_level":"open_access","creator":"bbickel","file_size":29796364,"content_type":"application/pdf"}],"type":"conference","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."}],"publication":"34th Annual ACM Symposium","citation":{"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.","short":"D. Degraen, M. Piovarci, B. Bickel, A. Kruger, in:, 34th Annual ACM Symposium, Association for Computing Machinery, 2021, pp. 954–971.","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.","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","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.","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"},"page":"954-971","date_published":"2021-10-10T00:00:00Z","day":"10","article_processing_charge":"No","has_accepted_license":"1","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","publication_status":"published","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"author":[{"first_name":"Donald","last_name":"Degraen","full_name":"Degraen, Donald"},{"id":"62E473F4-5C99-11EA-A40E-AF823DDC885E","last_name":"Piovarci","first_name":"Michael","full_name":"Piovarci, Michael"},{"full_name":"Bickel, Bernd","first_name":"Bernd","last_name":"Bickel","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385"},{"full_name":"Kruger, Antonio","first_name":"Antonio","last_name":"Kruger"}],"date_created":"2021-10-18T07:36:11Z","date_updated":"2021-10-19T19:29:06Z","file_date_updated":"2021-10-18T07:36:03Z","ec_funded":1,"oa":1,"quality_controlled":"1","project":[{"call_identifier":"H2020","name":"Distributed 3D Object Design","_id":"2508E324-B435-11E9-9278-68D0E5697425","grant_number":"642841"}],"conference":{"location":"Virtual","start_date":"2021-10-10","end_date":"2021-10-14","name":"UIST: User Interface Software and Technology"},"doi":"10.1145/3472749.3474798","language":[{"iso":"eng"}],"month":"10","publication_identifier":{"isbn":["978-1-4503-8635-7"]}},{"year":"2021","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.","publisher":"The Optical Society","department":[{"_id":"BeBi"}],"publication_status":"published","author":[{"full_name":"Elek, Oskar","first_name":"Oskar","last_name":"Elek"},{"full_name":"Zhang, Ran","first_name":"Ran","last_name":"Zhang","id":"4DDBCEB0-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-3808-281X"},{"first_name":"Denis","last_name":"Sumin","full_name":"Sumin, Denis"},{"full_name":"Myszkowski, Karol","last_name":"Myszkowski","first_name":"Karol"},{"orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","last_name":"Bickel","first_name":"Bernd","full_name":"Bickel, Bernd"},{"first_name":"Alexander","last_name":"Wilkie","full_name":"Wilkie, Alexander"},{"full_name":"Křivánek, Jaroslav","first_name":"Jaroslav","last_name":"Křivánek"},{"full_name":"Weyrich, Tim","first_name":"Tim","last_name":"Weyrich"}],"volume":29,"date_updated":"2023-08-07T14:11:57Z","date_created":"2021-03-14T23:01:33Z","ec_funded":1,"file_date_updated":"2021-03-22T08:15:28Z","license":"https://creativecommons.org/licenses/by/4.0/","external_id":{"isi":["000624968100103"]},"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":"Distributed 3D Object Design","call_identifier":"H2020","grant_number":"642841","_id":"2508E324-B435-11E9-9278-68D0E5697425"},{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020"}],"isi":1,"quality_controlled":"1","doi":"10.1364/OE.406095","language":[{"iso":"eng"}],"publication_identifier":{"eissn":["1094-4087"]},"month":"03","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9241","intvolume":" 29","status":"public","ddc":["000"],"title":"Robust and practical measurement of volume transport parameters in solid photo-polymer materials for 3D printing","oa_version":"Published Version","file":[{"file_name":"2021_OpticsExpress_Elek.pdf","access_level":"open_access","creator":"dernst","file_size":10873700,"content_type":"application/pdf","file_id":"9269","relation":"main_file","date_created":"2021-03-22T08:15:28Z","date_updated":"2021-03-22T08:15:28Z","success":1,"checksum":"a9697ad83136c19ad87e46aa2db63cfd"}],"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"}],"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.","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","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."},"publication":"Optics Express","page":"7568-7588","article_type":"original","date_published":"2021-03-01T00:00:00Z","scopus_import":"1","article_processing_charge":"No","has_accepted_license":"1","day":"01"},{"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","_id":"9376","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","title":"Computational design of planar multistable compliant structures","ddc":["000"],"status":"public","intvolume":" 40","file":[{"file_id":"9377","relation":"main_file","date_updated":"2021-05-08T17:36:59Z","date_created":"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},{"file_id":"9378","relation":"main_file","success":1,"checksum":"3b6e874e30bfa1bfc3ad3498710145a1","date_updated":"2021-05-08T17:38:22Z","date_created":"2021-05-08T17:38:22Z","access_level":"open_access","file_name":"multistable-video.mp4","creator":"bbickel","content_type":"video/mp4","file_size":76542901},{"creator":"bbickel","file_size":3367072,"content_type":"application/pdf","access_level":"open_access","description":"This document provides additional results and analyzes the robustness and limitations of our approach.","file_name":"multistable-supplementary material.pdf","checksum":"20dc3bc42e1a912a5b0247c116772098","date_created":"2021-12-17T08:13:51Z","date_updated":"2021-12-17T08:13:51Z","title":"Supplementary Material for “Computational Design of Planar Multistable Compliant Structures”","file_id":"10562","relation":"supplementary_material"}],"oa_version":"Published Version","keyword":["multistability","mechanism","computational design","rigidity"],"day":"08","article_processing_charge":"No","has_accepted_license":"1","publication":"ACM Transactions on Graphics","citation":{"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.","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).","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","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"},"article_type":"original","date_published":"2021-10-08T00:00:00Z","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","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"author":[{"id":"4DDBCEB0-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-3808-281X","first_name":"Ran","last_name":"Zhang","full_name":"Zhang, Ran"},{"full_name":"Auzinger, Thomas","last_name":"Auzinger","first_name":"Thomas","orcid":"0000-0002-1546-3265","id":"4718F954-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Bickel, Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","last_name":"Bickel","first_name":"Bernd"}],"date_created":"2021-05-08T17:37:08Z","date_updated":"2023-08-08T13:31:38Z","volume":40,"month":"10","publication_identifier":{"eissn":["1557-7368"],"issn":["0730-0301"]},"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"},"external_id":{"isi":["000752079300003"]},"isi":1,"quality_controlled":"1","project":[{"call_identifier":"H2020","name":"Distributed 3D Object Design","grant_number":"642841","_id":"2508E324-B435-11E9-9278-68D0E5697425"},{"call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","_id":"24F9549A-B435-11E9-9278-68D0E5697425","grant_number":"715767"}],"doi":"10.1145/3453477","acknowledged_ssus":[{"_id":"M-Shop"}],"language":[{"iso":"eng"}]},{"intvolume":" 27","title":"Computational design of skinned Quad-Robots","ddc":["000"],"status":"public","_id":"9408","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","oa_version":"Published Version","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_created":"2021-05-25T15:08:49Z","date_updated":"2021-05-25T15:08:49Z","relation":"main_file","file_id":"9427"}],"type":"journal_article","issue":"6","abstract":[{"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.","lang":"eng"}],"citation":{"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.","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","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.","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.","short":"X. Feng, J. Liu, H. Wang, Y. Yang, H. Bao, B. Bickel, W. Xu, IEEE Transactions on Visualization and Computer Graphics 27 (2021)."},"publication":"IEEE Transactions on Visualization and Computer Graphics","date_published":"2021-06-01T00:00:00Z","scopus_import":"1","article_processing_charge":"No","has_accepted_license":"1","day":"01","department":[{"_id":"BeBi"}],"publisher":"IEEE","publication_status":"published","pmid":1,"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).","volume":27,"date_created":"2021-05-23T22:01:42Z","date_updated":"2023-08-08T13:45:46Z","author":[{"full_name":"Feng, Xudong","last_name":"Feng","first_name":"Xudong"},{"full_name":"Liu, Jiafeng","last_name":"Liu","first_name":"Jiafeng"},{"first_name":"Huamin","last_name":"Wang","full_name":"Wang, Huamin"},{"first_name":"Yin","last_name":"Yang","full_name":"Yang, Yin"},{"full_name":"Bao, Hujun","last_name":"Bao","first_name":"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"}],"article_number":"2881-2895","ec_funded":1,"file_date_updated":"2021-05-25T15:08:49Z","project":[{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020"}],"quality_controlled":"1","isi":1,"external_id":{"isi":["000649620700009"],"pmid":["31804937"]},"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","publication_identifier":{"issn":["19410506"],"eissn":["10772626"]},"month":"06"},{"scopus_import":"1","has_accepted_license":"1","article_processing_charge":"Yes (in subscription journal)","day":"01","citation":{"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).","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.","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.","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","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","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."},"publication":"ACM Transactions on Graphics","article_type":"original","date_published":"2021-08-01T00:00:00Z","type":"journal_article","issue":"4","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."}],"_id":"9819","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","intvolume":" 40","status":"public","title":"PhotoApp: Photorealistic appearance editing of head portraits","ddc":["000"],"file":[{"access_level":"open_access","file_name":"2021_ACMTransactionsOnGraphics_Mallikarjun.pdf","file_size":49840741,"content_type":"application/pdf","creator":"asandaue","relation":"main_file","file_id":"9834","checksum":"51b61b7e5c175e2d7ed8fa3b35f7525a","success":1,"date_created":"2021-08-09T11:41:50Z","date_updated":"2021-08-09T11:41:50Z"}],"oa_version":"Published Version","publication_identifier":{"issn":["07300301"],"eissn":["15577368"]},"month":"08","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":["000674930900011"],"arxiv":["2103.07658"]},"oa":1,"quality_controlled":"1","isi":1,"doi":"10.1145/3450626.3459765","language":[{"iso":"eng"}],"article_number":"44","file_date_updated":"2021-08-09T11:41:50Z","year":"2021","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].","department":[{"_id":"BeBi"}],"publisher":"Association for Computing Machinery","publication_status":"published","author":[{"first_name":"B. R.","last_name":"Mallikarjun","full_name":"Mallikarjun, B. R."},{"full_name":"Tewari, Ayush","last_name":"Tewari","first_name":"Ayush"},{"full_name":"Dib, Abdallah","first_name":"Abdallah","last_name":"Dib"},{"full_name":"Weyrich, Tim","first_name":"Tim","last_name":"Weyrich"},{"full_name":"Bickel, Bernd","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel"},{"full_name":"Seidel, Hans Peter","last_name":"Seidel","first_name":"Hans Peter"},{"first_name":"Hanspeter","last_name":"Pfister","full_name":"Pfister, Hanspeter"},{"full_name":"Matusik, Wojciech","last_name":"Matusik","first_name":"Wojciech"},{"first_name":"Louis","last_name":"Chevallier","full_name":"Chevallier, Louis"},{"last_name":"Elgharib","first_name":"Mohamed A.","full_name":"Elgharib, Mohamed A."},{"full_name":"Theobalt, Christian","first_name":"Christian","last_name":"Theobalt"}],"volume":40,"date_created":"2021-08-08T22:01:27Z","date_updated":"2023-08-10T14:25:08Z"},{"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9820","status":"public","title":"The effect of shape and illumination on material perception: Model and applications","intvolume":" 40","oa_version":"Submitted Version","type":"journal_article","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","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.","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","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.","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","date_published":"2021-08-01T00:00:00Z","scopus_import":"1","day":"01","article_processing_charge":"No","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","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"author":[{"last_name":"Serrano","first_name":"Ana","full_name":"Serrano, Ana"},{"full_name":"Chen, Bin","last_name":"Chen","first_name":"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","last_name":"Seidel","first_name":"Hans Peter"},{"first_name":"Piotr","last_name":"Didyk","full_name":"Didyk, Piotr"},{"first_name":"Karol","last_name":"Myszkowski","full_name":"Myszkowski, Karol"}],"date_updated":"2023-08-10T14:20:10Z","date_created":"2021-08-08T22:01:28Z","volume":40,"article_number":"125","external_id":{"isi":["000674930900090"]},"oa":1,"main_file_link":[{"url":"https://zaguan.unizar.es/record/110704/files/texto_completo.pdf","open_access":"1"}],"isi":1,"quality_controlled":"1","doi":"10.1145/3450626.3459813","language":[{"iso":"eng"}],"month":"08","publication_identifier":{"eissn":["15577368"],"issn":["07300301"]}},{"oa":1,"external_id":{"arxiv":["2008.10247"],"isi":["000739917304096"]},"isi":1,"quality_controlled":"1","doi":"10.1109/CVPR46437.2021.00476","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"},"language":[{"iso":"eng"}],"publication_identifier":{"issn":["1063-6919"],"isbn":["978-166544509-2"]},"month":"09","year":"2021","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.","department":[{"_id":"BeBi"}],"publisher":"IEEE","publication_status":"published","author":[{"first_name":"Mallikarjun","last_name":"B R","full_name":"B R, Mallikarjun"},{"last_name":"Tewari","first_name":"Ayush","full_name":"Tewari, Ayush"},{"first_name":"Tae-Hyun","last_name":"Oh","full_name":"Oh, Tae-Hyun"},{"first_name":"Tim","last_name":"Weyrich","full_name":"Weyrich, Tim"},{"first_name":"Bernd","last_name":"Bickel","id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","full_name":"Bickel, Bernd"},{"first_name":"Hans-Peter","last_name":"Seidel","full_name":"Seidel, Hans-Peter"},{"first_name":"Hanspeter","last_name":"Pfister","full_name":"Pfister, Hanspeter"},{"last_name":"Matusik","first_name":"Wojciech","full_name":"Matusik, Wojciech"},{"first_name":"Mohamed","last_name":"Elgharib","full_name":"Elgharib, Mohamed"},{"full_name":"Theobalt, Christian","first_name":"Christian","last_name":"Theobalt"}],"date_updated":"2023-08-11T11:08:35Z","date_created":"2021-08-24T06:03:00Z","file_date_updated":"2021-08-24T06:02:15Z","citation":{"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","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","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.","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.","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.","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.","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."},"publication":"Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition","page":"4791-4800","date_published":"2021-09-01T00:00:00Z","scopus_import":"1","article_processing_charge":"No","has_accepted_license":"1","day":"01","_id":"9957","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","title":"Monocular reconstruction of neural face reflectance fields","status":"public","ddc":["000"],"oa_version":"Preprint","file":[{"file_id":"9958","relation":"main_file","date_updated":"2021-08-24T06:02:15Z","date_created":"2021-08-24T06:02:15Z","checksum":"961db0bde76dd87cf833930080bb9f38","file_name":"R_Monocular_Reconstruction_of_Neural_Face_Reflectance_Fields_CVPR_2021_paper[1].pdf","access_level":"open_access","creator":"bbickel","file_size":4746649,"content_type":"application/pdf"}],"type":"conference","abstract":[{"lang":"eng","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."}]},{"volume":40,"date_created":"2021-06-13T22:01:32Z","date_updated":"2023-08-14T08:01:50Z","author":[{"first_name":"Tobias","last_name":"Rittig","full_name":"Rittig, Tobias"},{"full_name":"Sumin, Denis","last_name":"Sumin","first_name":"Denis"},{"first_name":"Vahid","last_name":"Babaei","full_name":"Babaei, Vahid"},{"full_name":"Didyk, Piotr","first_name":"Piotr","last_name":"Didyk"},{"full_name":"Voloboy, Alexey","last_name":"Voloboy","first_name":"Alexey"},{"full_name":"Wilkie, Alexander","first_name":"Alexander","last_name":"Wilkie"},{"id":"49876194-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6511-9385","first_name":"Bernd","last_name":"Bickel","full_name":"Bickel, Bernd"},{"first_name":"Karol","last_name":"Myszkowski","full_name":"Myszkowski, Karol"},{"last_name":"Weyrich","first_name":"Tim","full_name":"Weyrich, Tim"},{"full_name":"Křivánek, Jaroslav","last_name":"Křivánek","first_name":"Jaroslav"}],"publisher":"Wiley","department":[{"_id":"BeBi"}],"publication_status":"published","year":"2021","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).","ec_funded":1,"file_date_updated":"2021-10-11T12:06:50Z","language":[{"iso":"eng"}],"doi":"10.1111/cgf.142626","project":[{"grant_number":"642841","_id":"2508E324-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"Distributed 3D Object Design"},{"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","external_id":{"isi":["000657959600017"]},"oa":1,"publication_identifier":{"eissn":["1467-8659"],"issn":["0167-7055"]},"month":"05","oa_version":"Submitted Version","file":[{"file_name":"ScatteringAwareColor3DPrinting_authorVersion.pdf","access_level":"open_access","creator":"bbickel","file_size":26026501,"content_type":"application/pdf","file_id":"10120","relation":"main_file","date_updated":"2021-10-11T12:06:50Z","date_created":"2021-10-11T12:06:50Z","success":1,"checksum":"33271724215f54a75c39d2ed40f2c502"}],"intvolume":" 40","ddc":["004"],"status":"public","title":"Neural acceleration of scattering-aware color 3D printing","_id":"9547","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","issue":"2","abstract":[{"lang":"eng","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."}],"type":"journal_article","date_published":"2021-05-01T00:00:00Z","page":"205-219","article_type":"original","citation":{"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.","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."},"publication":"Computer Graphics Forum","article_processing_charge":"No","has_accepted_license":"1","day":"01","scopus_import":"1"},{"type":"journal_article","abstract":[{"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.","lang":"eng"}],"issue":"12","_id":"10574","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","ddc":["000"],"title":"The effect of geometry and illumination on appearance perception of different material categories","status":"public","intvolume":" 37","file":[{"file_id":"10578","relation":"main_file","date_updated":"2021-12-27T13:51:08Z","date_created":"2021-12-27T13:51:08Z","success":1,"checksum":"244cfcac0479ca6e3444c098ab2860a1","file_name":"2021_VisComput_Chen.pdf","access_level":"open_access","creator":"cchlebak","content_type":"application/pdf","file_size":5741094}],"oa_version":"Published Version","scopus_import":"1","day":"01","has_accepted_license":"1","article_processing_charge":"Yes","publication":"Visual Computer","citation":{"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","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.","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.","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."},"article_type":"original","page":"2975-2987","date_published":"2021-12-01T00:00:00Z","file_date_updated":"2021-12-27T13:51:08Z","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.","year":"2021","publication_status":"published","publisher":"Springer Nature","department":[{"_id":"BeBi"}],"author":[{"full_name":"Chen, Bin","first_name":"Bin","last_name":"Chen"},{"full_name":"Wang, Chao","last_name":"Wang","first_name":"Chao"},{"full_name":"Piovarci, Michael","last_name":"Piovarci","first_name":"Michael","orcid":"0000-0002-5062-4474","id":"62E473F4-5C99-11EA-A40E-AF823DDC885E"},{"first_name":"Hans Peter","last_name":"Seidel","full_name":"Seidel, Hans Peter"},{"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"}],"date_created":"2021-12-26T23:01:26Z","date_updated":"2023-08-17T06:29:34Z","volume":37,"month":"12","publication_identifier":{"issn":["0178-2789"],"eissn":["1432-2315"]},"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,"isi":1,"quality_controlled":"1","doi":"10.1007/s00371-021-02227-x","language":[{"iso":"eng"}]},{"article_number":"272","ec_funded":1,"file_date_updated":"2021-10-27T07:08:07Z","year":"2021","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).","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"publication_status":"published","author":[{"full_name":"Alderighi, Thomas","first_name":"Thomas","last_name":"Alderighi"},{"first_name":"Luigi","last_name":"Malomo","full_name":"Malomo, Luigi"},{"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"},{"last_name":"Pietroni","first_name":"Nico","full_name":"Pietroni, Nico"}],"volume":40,"date_updated":"2024-02-28T12:52:48Z","date_created":"2021-10-27T07:08:19Z","publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368 "]},"month":"12","external_id":{"isi":["000729846700077"]},"oa":1,"main_file_link":[{"open_access":"1","url":"http://vcg.isti.cnr.it/Publications/2021/AMBCP21"}],"project":[{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020"}],"quality_controlled":"1","isi":1,"doi":"10.1145/3478513.3480555","language":[{"iso":"eng"}],"type":"journal_article","issue":"6","abstract":[{"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.","lang":"eng"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"10184","intvolume":" 40","status":"public","ddc":["000"],"title":"Volume decomposition for two-piece rigid casting","oa_version":"Submitted Version","file":[{"file_id":"10185","relation":"main_file","checksum":"384ece7a9ad1026787ba9560b04336d5","date_created":"2021-10-27T07:08:07Z","date_updated":"2021-10-27T07:08:07Z","access_level":"open_access","file_name":"rigidmolds-authorversion.pdf","creator":"bbickel","content_type":"application/pdf","file_size":107708317}],"article_processing_charge":"No","has_accepted_license":"1","day":"01","citation":{"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.","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.","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","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.","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","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."},"publication":"ACM Transactions on Graphics","article_type":"original","date_published":"2021-12-01T00:00:00Z"},{"conference":{"name":"SIGGRAF: Special Interest Group on Computer Graphics and Interactive Techniques","start_date":"2021-08-09","location":"Virtual","end_date":"2021-08-13"},"doi":"10.1145/3450626.3459800","language":[{"iso":"eng"}],"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,"isi":1,"quality_controlled":"1","project":[{"call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425"}],"month":"07","publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368"]},"author":[{"id":"400429CC-F248-11E8-B48F-1D18A9856A87","last_name":"Hafner","first_name":"Christian","full_name":"Hafner, Christian"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"}],"related_material":{"record":[{"id":"12897","relation":"dissertation_contains","status":"public"}],"link":[{"relation":"press_release","description":"News on IST Website","url":"https://ist.ac.at/en/news/designing-with-elastic-structures/"}]},"date_updated":"2024-03-28T23:30:47Z","date_created":"2021-08-08T22:01:26Z","volume":40,"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","publication_status":"published","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"file_date_updated":"2021-10-18T10:42:22Z","ec_funded":1,"article_number":"126","date_published":"2021-07-19T00:00:00Z","publication":"ACM Transactions on Graphics","citation":{"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.","ama":"Hafner C, Bickel B. The design space of plane elastic curves. ACM Transactions on Graphics. 2021;40(4). doi:10.1145/3450626.3459800","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.","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)."},"article_type":"original","day":"19","article_processing_charge":"No","has_accepted_license":"1","scopus_import":"1","keyword":["Computing methodologies","shape modeling","modeling and simulation","theory of computation","computational geometry","mathematics of computing","mathematical optimization"],"file":[{"relation":"main_file","file_id":"10150","checksum":"7e5d08ce46b0451b3102eacd3d00f85f","success":1,"date_created":"2021-10-18T10:42:15Z","date_updated":"2021-10-18T10:42:15Z","access_level":"open_access","file_name":"elastic-curves-paper.pdf","content_type":"application/pdf","file_size":17064290,"creator":"chafner"},{"file_size":547156,"content_type":"application/pdf","creator":"chafner","access_level":"open_access","file_name":"elastic-curves-supp.pdf","checksum":"0088643478be7c01a703b5b10767348f","date_created":"2021-10-18T10:42:22Z","date_updated":"2021-10-18T10:42:22Z","relation":"supplementary_material","file_id":"10151"}],"oa_version":"Published Version","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9817","ddc":["516"],"title":"The design space of plane elastic curves","status":"public","intvolume":" 40","abstract":[{"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.","lang":"eng"}],"issue":"4","type":"journal_article"},{"doi":"10.1007/s42452-020-03305-w","language":[{"iso":"eng"}],"quality_controlled":"1","month":"09","publication_identifier":{"eissn":["25233971"]},"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"},{"last_name":"Pietroni","first_name":"Nico","full_name":"Pietroni, Nico"},{"last_name":"Ponchio","first_name":"Federico","full_name":"Ponchio, Federico"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Cignoni","first_name":"Paolo","full_name":"Cignoni, Paolo"}],"date_created":"2021-02-28T23:01:25Z","date_updated":"2021-03-03T09:43:14Z","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"}],"article_number":"1505","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","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","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.","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","day":"01","article_processing_charge":"No","scopus_import":"1","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","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"},{"external_id":{"isi":["000512878200104"],"pmid":["31733380"]},"quality_controlled":"1","isi":1,"doi":"10.1016/j.wneu.2019.11.038","language":[{"iso":"eng"}],"publication_identifier":{"issn":["1878-8750"],"eissn":["1878-8769"]},"month":"02","pmid":1,"year":"2020","publisher":"Elsevier","department":[{"_id":"BeBi"}],"publication_status":"published","author":[{"full_name":"Dodier, Philippe","last_name":"Dodier","first_name":"Philippe"},{"full_name":"Auzinger, Thomas","id":"4718F954-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1546-3265","first_name":"Thomas","last_name":"Auzinger"},{"first_name":"Gabriel","last_name":"Mistelbauer","full_name":"Mistelbauer, Gabriel"},{"full_name":"Wang, Wei Te","last_name":"Wang","first_name":"Wei Te"},{"last_name":"Ferraz-Leite","first_name":"Heber","full_name":"Ferraz-Leite, Heber"},{"full_name":"Gruber, Andreas","last_name":"Gruber","first_name":"Andreas"},{"first_name":"Wolfgang","last_name":"Marik","full_name":"Marik, Wolfgang"},{"full_name":"Winter, Fabian","last_name":"Winter","first_name":"Fabian"},{"last_name":"Fischer","first_name":"Gerrit","full_name":"Fischer, Gerrit"},{"last_name":"Frischer","first_name":"Josa M.","full_name":"Frischer, Josa M."},{"last_name":"Bavinzski","first_name":"Gerhard","full_name":"Bavinzski, Gerhard"}],"volume":134,"date_created":"2019-12-29T23:00:48Z","date_updated":"2023-08-17T14:14:23Z","citation":{"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.","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.","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.","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","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.","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"},"publication":"World Neurosurgery","page":"e892-e902","article_type":"original","date_published":"2020-02-01T00:00:00Z","scopus_import":"1","article_processing_charge":"No","day":"01","_id":"7220","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","intvolume":" 134","title":"Novel software-derived workflow in extracranial–intracranial bypass surgery validated by transdural indocyanine green videoangiography","status":"public","oa_version":"None","type":"journal_article","issue":"2","abstract":[{"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.","lang":"eng"}]},{"department":[{"_id":"BeBi"}],"publisher":"Elsevier","publication_status":"published","pmid":1,"year":"2020","volume":49,"date_created":"2019-12-29T23:00:47Z","date_updated":"2023-08-17T14:15:22Z","author":[{"full_name":"Dodier, Philippe","last_name":"Dodier","first_name":"Philippe"},{"first_name":"Fabian","last_name":"Winter","full_name":"Winter, 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"},{"last_name":"Frischer","first_name":"Josa M.","full_name":"Frischer, 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","first_name":"Wolfgang","last_name":"Marik"},{"last_name":"Wolfsberger","first_name":"Stefan","full_name":"Wolfsberger, Stefan"},{"first_name":"Lukas","last_name":"Reissig","full_name":"Reissig, Lukas"},{"full_name":"Hammadi, Firas","first_name":"Firas","last_name":"Hammadi"},{"full_name":"Matula, Christian","first_name":"Christian","last_name":"Matula"},{"full_name":"Baumann, Arnulf","first_name":"Arnulf","last_name":"Baumann"},{"full_name":"Bavinzski, Gerhard","first_name":"Gerhard","last_name":"Bavinzski"}],"publication_identifier":{"issn":["0901-5027"],"eissn":["1399-0020"]},"month":"08","isi":1,"quality_controlled":"1","external_id":{"isi":["000556819800005"],"pmid":["31866145"]},"language":[{"iso":"eng"}],"doi":"10.1016/j.ijom.2019.11.011","type":"journal_article","issue":"8","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."}],"intvolume":" 49","status":"public","title":"Single-stage bone resection and cranioplastic reconstruction: Comparison of a novel software-derived PEEK workflow with the standard reconstructive method","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"7218","oa_version":"None","scopus_import":"1","article_processing_charge":"No","day":"01","page":"P1007-1015","article_type":"original","citation":{"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.","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.","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","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.","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","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."},"publication":"International Journal of Oral and Maxillofacial Surgery","date_published":"2020-08-01T00:00:00Z"},{"author":[{"orcid":"0000-0002-3808-281X","id":"4DDBCEB0-F248-11E8-B48F-1D18A9856A87","last_name":"Zhang","first_name":"Ran","full_name":"Zhang, Ran"}],"related_material":{"record":[{"status":"public","relation":"part_of_dissertation","id":"486"},{"id":"1002","relation":"part_of_dissertation","status":"public"}]},"date_created":"2020-09-14T01:04:53Z","date_updated":"2023-09-22T09:49:31Z","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.","year":"2020","publication_status":"published","publisher":"Institute of Science and Technology Austria","department":[{"_id":"BeBi"}],"file_date_updated":"2020-09-15T12:51:53Z","ec_funded":1,"doi":"10.15479/AT:ISTA:8386","supervisor":[{"last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","full_name":"Bickel, Bernd"}],"acknowledged_ssus":[{"_id":"SSU"}],"degree_awarded":"PhD","language":[{"iso":"eng"}],"oa":1,"project":[{"grant_number":"642841","_id":"2508E324-B435-11E9-9278-68D0E5697425","name":"Distributed 3D Object Design","call_identifier":"H2020"},{"name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020","grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425"}],"month":"09","publication_identifier":{"issn":["2663-337X"]},"file":[{"file_name":"Thesis_Ran.zip","access_level":"closed","creator":"rzhang","content_type":"application/x-zip-compressed","file_size":1245800191,"file_id":"8388","relation":"source_file","date_updated":"2020-09-14T12:18:43Z","date_created":"2020-09-14T01:02:59Z","checksum":"edcf578b6e1c9b0dd81ff72d319b66ba"},{"relation":"main_file","file_id":"8396","checksum":"817e20c33be9247f906925517c56a40d","success":1,"date_updated":"2020-09-15T12:51:53Z","date_created":"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","_id":"8386","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","ddc":["003"],"title":"Structure-aware computational design and its application to 3D printable volume scattering, mechanism, and multistability","status":"public","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"],"date_published":"2020-09-14T00:00:00Z","citation":{"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","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.","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.","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","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.","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."},"page":"148","day":"14","has_accepted_license":"1","article_processing_charge":"No"},{"file_date_updated":"2020-09-16T15:11:01Z","ec_funded":1,"year":"2020","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.","publication_status":"published","publisher":"Institute of Science and Technology Austria","department":[{"_id":"BeBi"}],"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":"research_data","id":"7151"},{"relation":"part_of_dissertation","status":"public","id":"7262"},{"status":"public","relation":"part_of_dissertation","id":"8562"},{"id":"1001","status":"public","relation":"part_of_dissertation"},{"id":"8375","relation":"research_data","status":"public"}]},"date_updated":"2024-02-21T12:44:29Z","date_created":"2020-09-10T16:19:55Z","month":"09","publication_identifier":{"issn":["2663-337X"],"isbn":["978-3-99078-010-7"]},"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:8366","supervisor":[{"last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87","full_name":"Bickel, Bernd"}],"degree_awarded":"PhD","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"ScienComp"}],"language":[{"iso":"eng"}],"type":"dissertation","alternative_title":["ISTA Thesis"],"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"}],"_id":"8366","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","ddc":["000"],"title":"Computational design of curved thin shells: From glass façades to programmable matter","status":"public","file":[{"relation":"main_file","file_id":"8367","checksum":"f8da89553da36037296b0a80f14ebf50","success":1,"date_created":"2020-09-10T16:11:49Z","date_updated":"2020-09-10T16:11:49Z","access_level":"open_access","file_name":"thesis_rguseinov.pdf","content_type":"application/pdf","file_size":70950442,"creator":"rguseino"},{"relation":"source_file","file_id":"8374","date_updated":"2020-09-16T15:11:01Z","date_created":"2020-09-11T09:39:48Z","checksum":"e8fd944c960c20e0e27e6548af69121d","file_name":"thesis_source.zip","access_level":"closed","content_type":"application/x-zip-compressed","file_size":76207597,"creator":"rguseino"}],"oa_version":"Published Version","keyword":["computer-aided design","shape modeling","self-morphing","mechanical engineering"],"day":"21","article_processing_charge":"No","has_accepted_license":"1","citation":{"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.","short":"R. Guseinov, Computational Design of Curved Thin Shells: From Glass Façades to Programmable Matter, Institute of Science and Technology Austria, 2020.","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.","ama":"Guseinov R. Computational design of curved thin shells: From glass façades to programmable matter. 2020. doi:10.15479/AT:ISTA:8366","ista":"Guseinov R. 2020. Computational design of curved thin shells: From glass façades to programmable matter. Institute of Science and Technology Austria.","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."},"page":"118","date_published":"2020-09-21T00:00:00Z"},{"citation":{"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","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.","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","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.","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).","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."},"publication":"ACM Transactions on Graphics","article_type":"original","date_published":"2020-11-26T00:00:00Z","scopus_import":"1","has_accepted_license":"1","article_processing_charge":"No","day":"26","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"8562","intvolume":" 39","status":"public","title":"Computational design of cold bent glass façades","ddc":["000"],"file":[{"file_id":"13084","relation":"main_file","success":1,"checksum":"c7f67717ad74e670b7daeae732abe151","date_created":"2023-05-23T20:54:43Z","date_updated":"2023-05-23T20:54:43Z","access_level":"open_access","file_name":"coldglass.pdf","creator":"bbickel","content_type":"application/pdf","file_size":28964641}],"oa_version":"Submitted Version","type":"journal_article","issue":"6","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"}],"external_id":{"isi":["000595589100048"],"arxiv":["2009.03667"]},"oa":1,"project":[{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling"}],"isi":1,"quality_controlled":"1","doi":"10.1145/3414685.3417843","language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"ScienComp"}],"publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368"]},"month":"11","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.","publisher":"Association for Computing Machinery","department":[{"_id":"BeBi"}],"publication_status":"published","related_material":{"link":[{"url":"https://ist.ac.at/en/news/bend-dont-break/","description":"News on IST Homepage","relation":"press_release"}],"record":[{"relation":"dissertation_contains","status":"public","id":"8366"},{"id":"8761","relation":"research_data","status":"public"}]},"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","id":"2DC83906-F248-11E8-B48F-1D18A9856A87","last_name":"Perez Rodriguez","first_name":"Jesus"},{"last_name":"Pellis","first_name":"Davide","full_name":"Pellis, Davide"},{"full_name":"Henderson, Paul M","id":"13C09E74-18D9-11E9-8878-32CFE5697425","orcid":"0000-0002-5198-7445","first_name":"Paul M","last_name":"Henderson"},{"first_name":"Florian","last_name":"Rist","full_name":"Rist, Florian"},{"full_name":"Pottmann, Helmut","last_name":"Pottmann","first_name":"Helmut"},{"full_name":"Bickel, Bernd","last_name":"Bickel","first_name":"Bernd","orcid":"0000-0001-6511-9385","id":"49876194-F248-11E8-B48F-1D18A9856A87"}],"volume":39,"date_updated":"2024-02-21T12:43:21Z","date_created":"2020-09-23T11:30:02Z","article_number":"208","ec_funded":1,"file_date_updated":"2023-05-23T20:54:43Z"},{"project":[{"name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","call_identifier":"H2020","grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425"}],"citation":{"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","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.","ama":"Guseinov R. 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Supplementary data for “Computational design of cold bent glass façades.” 2020. doi: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.","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.","short":"R. Guseinov, (2020).","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.","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."},"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":[{"grant_number":"715767","_id":"24F9549A-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling"}]},{"abstract":[{"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.","lang":"eng"}],"type":"journal_article","file":[{"file_id":"7336","relation":"main_file","checksum":"7db23fef2f4cda712f17f1004116ddff","date_created":"2020-01-15T14:35:34Z","date_updated":"2020-07-14T12:47:55Z","access_level":"open_access","file_name":"2020_NatureComm_Guseinov.pdf","creator":"rguseino","content_type":"application/pdf","file_size":1315270}],"oa_version":"Published Version","ddc":["000"],"title":"Programming temporal morphing of self-actuated shells","status":"public","intvolume":" 11","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"7262","day":"13","has_accepted_license":"1","article_processing_charge":"No","keyword":["Design","Synthesis and processing","Mechanical engineering","Polymers"],"scopus_import":"1","date_published":"2020-01-13T00:00:00Z","article_type":"original","publication":"Nature Communications","citation":{"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.","ista":"Guseinov R, McMahan C, Perez Rodriguez J, Daraio C, Bickel B. 2020. Programming temporal morphing of self-actuated shells. Nature Communications. 11, 237.","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.","short":"R. Guseinov, C. McMahan, J. Perez Rodriguez, C. 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