--- _id: '10148' 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. 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). article_processing_charge: No author: - first_name: Donald full_name: Degraen, Donald last_name: Degraen - first_name: Michael full_name: Piovarci, Michael id: 62E473F4-5C99-11EA-A40E-AF823DDC885E last_name: Piovarci - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Antonio full_name: Kruger, Antonio last_name: Kruger citation: 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' 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' 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. 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. 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.' 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. conference: end_date: 2021-10-14 location: Virtual name: 'UIST: User Interface Software and Technology' start_date: 2021-10-10 date_created: 2021-10-18T07:36:11Z date_published: 2021-10-10T00:00:00Z date_updated: 2021-10-19T19:29:06Z day: '10' ddc: - '000' department: - _id: BeBi doi: 10.1145/3472749.3474798 ec_funded: 1 file: - access_level: open_access checksum: b0b26464df79b3a59e8ed82e4e19ab15 content_type: application/pdf creator: bbickel date_created: 2021-10-18T07:36:03Z date_updated: 2021-10-18T07:36:03Z file_id: '10149' file_name: degraen-UIST2021_Texture_Appropriation_CR_preprint.pdf file_size: 29796364 relation: main_file file_date_updated: 2021-10-18T07:36:03Z has_accepted_license: '1' language: - iso: eng month: '10' oa: 1 oa_version: Preprint page: 954-971 project: - _id: 2508E324-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '642841' name: Distributed 3D Object Design publication: 34th Annual ACM Symposium publication_identifier: isbn: - 978-1-4503-8635-7 publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' status: public title: Capturing tactile properties of real surfaces for haptic reproduction type: conference user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 year: '2021' ... --- _id: '9241' abstract: - lang: eng 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.' 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." article_processing_charge: No article_type: original author: - first_name: Oskar full_name: Elek, Oskar last_name: Elek - first_name: Ran full_name: Zhang, Ran id: 4DDBCEB0-F248-11E8-B48F-1D18A9856A87 last_name: Zhang orcid: 0000-0002-3808-281X - first_name: Denis full_name: Sumin, Denis last_name: Sumin - first_name: Karol full_name: Myszkowski, Karol last_name: Myszkowski - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Alexander full_name: Wilkie, Alexander last_name: Wilkie - first_name: Jaroslav full_name: Křivánek, Jaroslav last_name: Křivánek - first_name: Tim full_name: Weyrich, Tim last_name: Weyrich citation: 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 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 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. 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. 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. 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. date_created: 2021-03-14T23:01:33Z date_published: 2021-03-01T00:00:00Z date_updated: 2023-08-07T14:11:57Z day: '01' ddc: - '000' department: - _id: BeBi doi: 10.1364/OE.406095 ec_funded: 1 external_id: isi: - '000624968100103' file: - access_level: open_access checksum: a9697ad83136c19ad87e46aa2db63cfd content_type: application/pdf creator: dernst date_created: 2021-03-22T08:15:28Z date_updated: 2021-03-22T08:15:28Z file_id: '9269' file_name: 2021_OpticsExpress_Elek.pdf file_size: 10873700 relation: main_file success: 1 file_date_updated: 2021-03-22T08:15:28Z has_accepted_license: '1' intvolume: ' 29' isi: 1 issue: '5' language: - iso: eng month: '03' oa: 1 oa_version: Published Version page: 7568-7588 project: - _id: 2508E324-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '642841' name: Distributed 3D Object Design - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: Optics Express publication_identifier: eissn: - 1094-4087 publication_status: published publisher: The Optical Society quality_controlled: '1' scopus_import: '1' status: public title: Robust and practical measurement of volume transport parameters in solid photo-polymer materials for 3D printing tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 29 year: '2021' ... --- _id: '9376' 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. acknowledged_ssus: - _id: M-Shop 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).' article_number: '186' article_processing_charge: No article_type: original author: - first_name: Ran full_name: Zhang, Ran id: 4DDBCEB0-F248-11E8-B48F-1D18A9856A87 last_name: Zhang orcid: 0000-0002-3808-281X - first_name: Thomas full_name: Auzinger, Thomas id: 4718F954-F248-11E8-B48F-1D18A9856A87 last_name: Auzinger orcid: 0000-0002-1546-3265 - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 citation: 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 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 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. 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. ista: Zhang R, Auzinger T, Bickel B. 2021. Computational design of planar multistable compliant structures. ACM Transactions on Graphics. 40(5), 186. 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). date_created: 2021-05-08T17:37:08Z date_published: 2021-10-08T00:00:00Z date_updated: 2023-08-08T13:31:38Z day: '08' ddc: - '000' department: - _id: BeBi doi: 10.1145/3453477 ec_funded: 1 external_id: isi: - '000752079300003' file: - access_level: open_access checksum: 8564b3118457d4c8939a8ef2b1a2f16c content_type: application/pdf creator: bbickel date_created: 2021-05-08T17:36:59Z date_updated: 2021-05-08T17:36:59Z file_id: '9377' file_name: Multistable-authorversion.pdf file_size: 18926557 relation: main_file - access_level: open_access checksum: 3b6e874e30bfa1bfc3ad3498710145a1 content_type: video/mp4 creator: bbickel date_created: 2021-05-08T17:38:22Z date_updated: 2021-05-08T17:38:22Z file_id: '9378' file_name: multistable-video.mp4 file_size: 76542901 relation: main_file success: 1 - access_level: open_access checksum: 20dc3bc42e1a912a5b0247c116772098 content_type: application/pdf creator: bbickel date_created: 2021-12-17T08:13:51Z date_updated: 2021-12-17T08:13:51Z description: This document provides additional results and analyzes the robustness and limitations of our approach. file_id: '10562' file_name: multistable-supplementary material.pdf file_size: 3367072 relation: supplementary_material title: Supplementary Material for “Computational Design of Planar Multistable Compliant Structures” file_date_updated: 2021-12-17T08:13:51Z has_accepted_license: '1' intvolume: ' 40' isi: 1 issue: '5' keyword: - multistability - mechanism - computational design - rigidity language: - iso: eng month: '10' oa: 1 oa_version: Published Version project: - _id: 2508E324-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '642841' name: Distributed 3D Object Design - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: ACM Transactions on Graphics publication_identifier: eissn: - 1557-7368 issn: - 0730-0301 publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' status: public title: Computational design of planar multistable compliant structures tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 40 year: '2021' ... --- _id: '9408' abstract: - lang: eng text: We present a computational design system that assists users to model, optimize, and fabricate quad-robots with soft skins. Our system addresses the challenging task of predicting their physical behavior by fully integrating the multibody dynamics of the mechanical skeleton and the elastic behavior of the soft skin. The developed motion control strategy uses an alternating optimization scheme to avoid expensive full space time-optimization, interleaving space-time optimization for the skeleton, and frame-by-frame optimization for the full dynamics. The output are motor torques to drive the robot to achieve a user prescribed motion trajectory. We also provide a collection of convenient engineering tools and empirical manufacturing guidance to support the fabrication of the designed quad-robot. We validate the feasibility of designs generated with our system through physics simulations and with a physically-fabricated prototype. 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). article_number: 2881-2895 article_processing_charge: No author: - first_name: Xudong full_name: Feng, Xudong last_name: Feng - first_name: Jiafeng full_name: Liu, Jiafeng last_name: Liu - first_name: Huamin full_name: Wang, Huamin last_name: Wang - first_name: Yin full_name: Yang, Yin last_name: Yang - first_name: Hujun full_name: Bao, Hujun last_name: Bao - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Weiwei full_name: Xu, Weiwei last_name: Xu citation: 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 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 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. ieee: X. Feng et al., “Computational design of skinned Quad-Robots,” IEEE Transactions on Visualization and Computer Graphics, vol. 27, no. 6. IEEE, 2021. 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. 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). date_created: 2021-05-23T22:01:42Z date_published: 2021-06-01T00:00:00Z date_updated: 2023-08-08T13:45:46Z day: '01' ddc: - '000' department: - _id: BeBi doi: 10.1109/TVCG.2019.2957218 ec_funded: 1 external_id: isi: - '000649620700009' pmid: - '31804937' file: - access_level: open_access checksum: a78e6ac94e33ade4ffaea66943d5f7dc content_type: application/pdf creator: kschuh date_created: 2021-05-25T15:08:49Z date_updated: 2021-05-25T15:08:49Z file_id: '9427' file_name: 2021_TVCG_Feng.pdf file_size: 6183002 relation: main_file success: 1 file_date_updated: 2021-05-25T15:08:49Z has_accepted_license: '1' intvolume: ' 27' isi: 1 issue: '6' language: - iso: eng month: '06' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: IEEE Transactions on Visualization and Computer Graphics publication_identifier: eissn: - '10772626' issn: - '19410506' publication_status: published publisher: IEEE quality_controlled: '1' scopus_import: '1' status: public title: Computational design of skinned Quad-Robots tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 27 year: '2021' ... --- _id: '9819' abstract: - lang: eng text: Photorealistic editing of head portraits is a challenging task as humans are very sensitive to inconsistencies in faces. We present an approach for high-quality intuitive editing of the camera viewpoint and scene illumination (parameterised with an environment map) in a portrait image. This requires our method to capture and control the full reflectance field of the person in the image. Most editing approaches rely on supervised learning using training data captured with setups such as light and camera stages. Such datasets are expensive to acquire, not readily available and do not capture all the rich variations of in-the-wild portrait images. In addition, most supervised approaches only focus on relighting, and do not allow camera viewpoint editing. Thus, they only capture and control a subset of the reflectance field. Recently, portrait editing has been demonstrated by operating in the generative model space of StyleGAN. While such approaches do not require direct supervision, there is a significant loss of quality when compared to the supervised approaches. In this paper, we present a method which learns from limited supervised training data. The training images only include people in a fixed neutral expression with eyes closed, without much hair or background variations. Each person is captured under 150 one-light-at-a-time conditions and under 8 camera poses. Instead of training directly in the image space, we design a supervised problem which learns transformations in the latent space of StyleGAN. This combines the best of supervised learning and generative adversarial modeling. We show that the StyleGAN prior allows for generalisation to different expressions, hairstyles and backgrounds. This produces high-quality photorealistic results for in-the-wild images and significantly outperforms existing methods. Our approach can edit the illumination and pose simultaneously, and runs at interactive rates. 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]. article_number: '44' article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: B. R. full_name: Mallikarjun, B. R. last_name: Mallikarjun - first_name: Ayush full_name: Tewari, Ayush last_name: Tewari - first_name: Abdallah full_name: Dib, Abdallah last_name: Dib - first_name: Tim full_name: Weyrich, Tim last_name: Weyrich - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Hans Peter full_name: Seidel, Hans Peter last_name: Seidel - first_name: Hanspeter full_name: Pfister, Hanspeter last_name: Pfister - first_name: Wojciech full_name: Matusik, Wojciech last_name: Matusik - first_name: Louis full_name: Chevallier, Louis last_name: Chevallier - first_name: Mohamed A. full_name: Elgharib, Mohamed A. last_name: Elgharib - first_name: Christian full_name: Theobalt, Christian last_name: Theobalt citation: 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' 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' 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.' 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.' 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.' mla: 'Mallikarjun, B. R., et al. “PhotoApp: Photorealistic Appearance Editing of Head Portraits.” ACM Transactions on Graphics, vol. 40, no. 4, 44, Association for Computing Machinery, 2021, doi:10.1145/3450626.3459765.' short: B.R. Mallikarjun, A. Tewari, A. Dib, T. Weyrich, B. Bickel, H.P. Seidel, H. Pfister, W. Matusik, L. Chevallier, M.A. Elgharib, C. Theobalt, ACM Transactions on Graphics 40 (2021). date_created: 2021-08-08T22:01:27Z date_published: 2021-08-01T00:00:00Z date_updated: 2023-08-10T14:25:08Z day: '01' ddc: - '000' department: - _id: BeBi doi: 10.1145/3450626.3459765 external_id: arxiv: - '2103.07658' isi: - '000674930900011' file: - access_level: open_access checksum: 51b61b7e5c175e2d7ed8fa3b35f7525a content_type: application/pdf creator: asandaue date_created: 2021-08-09T11:41:50Z date_updated: 2021-08-09T11:41:50Z file_id: '9834' file_name: 2021_ACMTransactionsOnGraphics_Mallikarjun.pdf file_size: 49840741 relation: main_file success: 1 file_date_updated: 2021-08-09T11:41:50Z has_accepted_license: '1' intvolume: ' 40' isi: 1 issue: '4' language: - iso: eng month: '08' oa: 1 oa_version: Published Version publication: ACM Transactions on Graphics publication_identifier: eissn: - '15577368' issn: - '07300301' publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' scopus_import: '1' status: public title: 'PhotoApp: Photorealistic appearance editing of head portraits' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 40 year: '2021' ... --- _id: '9820' abstract: - lang: eng 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. 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). article_number: '125' article_processing_charge: No article_type: original author: - first_name: Ana full_name: Serrano, Ana last_name: Serrano - first_name: Bin full_name: Chen, Bin last_name: Chen - first_name: Chao full_name: Wang, Chao last_name: Wang - first_name: Michael full_name: Piovarci, Michael id: 62E473F4-5C99-11EA-A40E-AF823DDC885E last_name: Piovarci orcid: 0000-0002-5062-4474 - first_name: Hans Peter full_name: Seidel, Hans Peter last_name: Seidel - first_name: Piotr full_name: Didyk, Piotr last_name: Didyk - first_name: Karol full_name: Myszkowski, Karol last_name: Myszkowski 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' 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' 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.' 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.' 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.' 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). date_created: 2021-08-08T22:01:28Z date_published: 2021-08-01T00:00:00Z date_updated: 2023-08-10T14:20:10Z day: '01' department: - _id: BeBi doi: 10.1145/3450626.3459813 external_id: isi: - '000674930900090' intvolume: ' 40' isi: 1 issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://zaguan.unizar.es/record/110704/files/texto_completo.pdf month: '08' oa: 1 oa_version: Submitted Version publication: ACM Transactions on Graphics publication_identifier: eissn: - '15577368' issn: - '07300301' publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' scopus_import: '1' status: public title: 'The effect of shape and illumination on material perception: Model and applications' type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 40 year: '2021' ... --- _id: '9957' 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. 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." article_processing_charge: No author: - first_name: Mallikarjun full_name: B R, Mallikarjun last_name: B R - first_name: Ayush full_name: Tewari, Ayush last_name: Tewari - first_name: Tae-Hyun full_name: Oh, Tae-Hyun last_name: Oh - first_name: Tim full_name: Weyrich, Tim last_name: Weyrich - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Hans-Peter full_name: Seidel, Hans-Peter last_name: Seidel - first_name: Hanspeter full_name: Pfister, Hanspeter last_name: Pfister - first_name: Wojciech full_name: Matusik, Wojciech last_name: Matusik - first_name: Mohamed full_name: Elgharib, Mohamed last_name: Elgharib - first_name: Christian full_name: Theobalt, Christian last_name: Theobalt 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' 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. 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.' mla: B R, Mallikarjun, et al. “Monocular Reconstruction of Neural Face Reflectance Fields.” Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, IEEE, 2021, pp. 4791–800, doi:10.1109/CVPR46437.2021.00476. short: M. B R, A. Tewari, T.-H. Oh, T. Weyrich, B. Bickel, H.-P. Seidel, H. Pfister, W. Matusik, M. Elgharib, C. Theobalt, in:, Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition, IEEE, 2021, pp. 4791–4800. conference: end_date: 2021-06-25 location: Nashville, TN, United States; Virtual name: 'CVPR: Conference on Computer Vision and Pattern Recognition' start_date: 2021-06-20 date_created: 2021-08-24T06:03:00Z date_published: 2021-09-01T00:00:00Z date_updated: 2023-08-11T11:08:35Z day: '01' ddc: - '000' department: - _id: BeBi doi: 10.1109/CVPR46437.2021.00476 external_id: arxiv: - '2008.10247' isi: - '000739917304096' file: - access_level: open_access checksum: 961db0bde76dd87cf833930080bb9f38 content_type: application/pdf creator: bbickel date_created: 2021-08-24T06:02:15Z date_updated: 2021-08-24T06:02:15Z file_id: '9958' file_name: R_Monocular_Reconstruction_of_Neural_Face_Reflectance_Fields_CVPR_2021_paper[1].pdf file_size: 4746649 relation: main_file file_date_updated: 2021-08-24T06:02:15Z has_accepted_license: '1' isi: 1 language: - iso: eng month: '09' oa: 1 oa_version: Preprint page: 4791-4800 publication: Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition publication_identifier: isbn: - 978-166544509-2 issn: - 1063-6919 publication_status: published publisher: IEEE quality_controlled: '1' scopus_import: '1' status: public title: Monocular reconstruction of neural face reflectance fields type: conference user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 year: '2021' ... --- _id: '9547' 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. 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). article_processing_charge: No article_type: original author: - first_name: Tobias full_name: Rittig, Tobias last_name: Rittig - first_name: Denis full_name: Sumin, Denis last_name: Sumin - first_name: Vahid full_name: Babaei, Vahid last_name: Babaei - first_name: Piotr full_name: Didyk, Piotr last_name: Didyk - first_name: Alexey full_name: Voloboy, Alexey last_name: Voloboy - first_name: Alexander full_name: Wilkie, Alexander last_name: Wilkie - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Karol full_name: Myszkowski, Karol last_name: Myszkowski - first_name: Tim full_name: Weyrich, Tim last_name: Weyrich - first_name: Jaroslav full_name: Křivánek, Jaroslav last_name: Křivánek 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 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. 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. 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. 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. date_created: 2021-06-13T22:01:32Z date_published: 2021-05-01T00:00:00Z date_updated: 2023-08-14T08:01:50Z day: '01' ddc: - '004' department: - _id: BeBi doi: 10.1111/cgf.142626 ec_funded: 1 external_id: isi: - '000657959600017' file: - access_level: open_access checksum: 33271724215f54a75c39d2ed40f2c502 content_type: application/pdf creator: bbickel date_created: 2021-10-11T12:06:50Z date_updated: 2021-10-11T12:06:50Z file_id: '10120' file_name: ScatteringAwareColor3DPrinting_authorVersion.pdf file_size: 26026501 relation: main_file success: 1 file_date_updated: 2021-10-11T12:06:50Z has_accepted_license: '1' intvolume: ' 40' isi: 1 issue: '2' language: - iso: eng month: '05' oa: 1 oa_version: Submitted Version page: 205-219 project: - _id: 2508E324-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '642841' name: Distributed 3D Object Design - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: Computer Graphics Forum publication_identifier: eissn: - 1467-8659 issn: - 0167-7055 publication_status: published publisher: Wiley quality_controlled: '1' scopus_import: '1' status: public title: Neural acceleration of scattering-aware color 3D printing type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 40 year: '2021' ... --- _id: '10574' abstract: - lang: eng text: 'The understanding of material appearance perception is a complex problem due to interactions between material reflectance, surface geometry, and illumination. Recently, Serrano et al. collected the largest dataset to date with subjective ratings of material appearance attributes, including glossiness, metallicness, sharpness and contrast of reflections. In this work, we make use of their dataset to investigate for the first time the impact of the interactions between illumination, geometry, and eight different material categories in perceived appearance attributes. After an initial analysis, we select for further analysis the four material categories that cover the largest range for all perceptual attributes: fabric, plastic, ceramic, and metal. Using a cumulative link mixed model (CLMM) for robust regression, we discover interactions between these material categories and four representative illuminations and object geometries. We believe that our findings contribute to expanding the knowledge on material appearance perception and can be useful for many applications, such as scene design, where any particular material in a given shape can be aligned with dominant classes of illumination, so that a desired strength of appearance attributes can be achieved.' 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. article_processing_charge: Yes article_type: original author: - first_name: Bin full_name: Chen, Bin last_name: Chen - first_name: Chao full_name: Wang, Chao last_name: Wang - first_name: Michael full_name: Piovarci, Michael id: 62E473F4-5C99-11EA-A40E-AF823DDC885E last_name: Piovarci orcid: 0000-0002-5062-4474 - first_name: Hans Peter full_name: Seidel, Hans Peter last_name: Seidel - first_name: Piotr full_name: Didyk, Piotr last_name: Didyk - first_name: Karol full_name: Myszkowski, Karol last_name: Myszkowski - first_name: Ana full_name: Serrano, Ana last_name: Serrano 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 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. 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. 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. short: B. Chen, C. Wang, M. Piovarci, H.P. Seidel, P. Didyk, K. Myszkowski, A. Serrano, Visual Computer 37 (2021) 2975–2987. date_created: 2021-12-26T23:01:26Z date_published: 2021-12-01T00:00:00Z date_updated: 2023-08-17T06:29:34Z day: '01' ddc: - '000' department: - _id: BeBi doi: 10.1007/s00371-021-02227-x external_id: isi: - '000673536600003' file: - access_level: open_access checksum: 244cfcac0479ca6e3444c098ab2860a1 content_type: application/pdf creator: cchlebak date_created: 2021-12-27T13:51:08Z date_updated: 2021-12-27T13:51:08Z file_id: '10578' file_name: 2021_VisComput_Chen.pdf file_size: 5741094 relation: main_file success: 1 file_date_updated: 2021-12-27T13:51:08Z has_accepted_license: '1' intvolume: ' 37' isi: 1 issue: '12' language: - iso: eng month: '12' oa: 1 oa_version: Published Version page: 2975-2987 publication: Visual Computer publication_identifier: eissn: - 1432-2315 issn: - 0178-2789 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: The effect of geometry and illumination on appearance perception of different material categories tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 37 year: '2021' ... --- _id: '10184' abstract: - lang: eng text: "We introduce a novel technique to automatically decompose an input object’s volume into a set of parts that can be represented by two opposite height fields. Such decomposition enables the manufacturing of individual parts using two-piece reusable rigid molds. Our decomposition strategy relies on a new energy formulation that utilizes a pre-computed signal on the mesh volume representing the accessibility for a predefined set of extraction directions. Thanks to this novel formulation, our method allows for efficient optimization of a fabrication-aware partitioning of volumes in a completely\r\nautomatic way. We demonstrate the efficacy of our approach by generating valid volume partitionings for a wide range of complex objects and physically reproducing several of them." 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).' article_number: '272' article_processing_charge: No article_type: original author: - first_name: Thomas full_name: Alderighi, Thomas last_name: Alderighi - first_name: Luigi full_name: Malomo, Luigi last_name: Malomo - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Paolo full_name: Cignoni, Paolo last_name: Cignoni - first_name: Nico full_name: Pietroni, Nico last_name: Pietroni citation: 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 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 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. ieee: T. Alderighi, L. Malomo, B. Bickel, P. Cignoni, and N. Pietroni, “Volume decomposition for two-piece rigid casting,” ACM Transactions on Graphics, vol. 40, no. 6. Association for Computing Machinery, 2021. ista: Alderighi T, Malomo L, Bickel B, Cignoni P, Pietroni N. 2021. Volume decomposition for two-piece rigid casting. ACM Transactions on Graphics. 40(6), 272. 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. short: T. Alderighi, L. Malomo, B. Bickel, P. Cignoni, N. Pietroni, ACM Transactions on Graphics 40 (2021). date_created: 2021-10-27T07:08:19Z date_published: 2021-12-01T00:00:00Z date_updated: 2024-02-28T12:52:48Z day: '01' ddc: - '000' department: - _id: BeBi doi: 10.1145/3478513.3480555 ec_funded: 1 external_id: isi: - '000729846700077' file: - access_level: open_access checksum: 384ece7a9ad1026787ba9560b04336d5 content_type: application/pdf creator: bbickel date_created: 2021-10-27T07:08:07Z date_updated: 2021-10-27T07:08:07Z file_id: '10185' file_name: rigidmolds-authorversion.pdf file_size: 107708317 relation: main_file file_date_updated: 2021-10-27T07:08:07Z has_accepted_license: '1' intvolume: ' 40' isi: 1 issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: http://vcg.isti.cnr.it/Publications/2021/AMBCP21 month: '12' oa: 1 oa_version: Submitted Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: ACM Transactions on Graphics publication_identifier: eissn: - '1557-7368 ' issn: - 0730-0301 publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' status: public title: Volume decomposition for two-piece rigid casting type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 40 year: '2021' ... --- _id: '9817' abstract: - lang: eng text: Elastic bending of initially flat slender elements allows the realization and economic fabrication of intriguing curved shapes. In this work, we derive an intuitive but rigorous geometric characterization of the design space of plane elastic rods with variable stiffness. It enables designers to determine which shapes are physically viable with active bending by visual inspection alone. Building on these insights, we propose a method for efficiently designing the geometry of a flat elastic rod that realizes a target equilibrium curve, which only requires solving a linear program. We implement this method in an interactive computational design tool that gives feedback about the feasibility of a design, and computes the geometry of the structural elements necessary to realize it within an instant. The tool also offers an iterative optimization routine that improves the fabricability of a model while modifying it as little as possible. In addition, we use our geometric characterization to derive an algorithm for analyzing and recovering the stability of elastic curves that would otherwise snap out of their unstable equilibrium shapes by buckling. We show the efficacy of our approach by designing and manufacturing several physical models that are assembled from flat elements. 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" article_number: '126' article_processing_charge: No article_type: original author: - first_name: Christian full_name: Hafner, Christian id: 400429CC-F248-11E8-B48F-1D18A9856A87 last_name: Hafner - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 citation: ama: Hafner C, Bickel B. The design space of plane elastic curves. ACM Transactions on Graphics. 2021;40(4). doi:10.1145/3450626.3459800 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' 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. 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. ista: Hafner C, Bickel B. 2021. The design space of plane elastic curves. ACM Transactions on Graphics. 40(4), 126. 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). conference: end_date: 2021-08-13 location: Virtual name: 'SIGGRAF: Special Interest Group on Computer Graphics and Interactive Techniques' start_date: 2021-08-09 date_created: 2021-08-08T22:01:26Z date_published: 2021-07-19T00:00:00Z date_updated: 2024-03-27T23:30:45Z day: '19' ddc: - '516' department: - _id: BeBi doi: 10.1145/3450626.3459800 ec_funded: 1 external_id: isi: - '000674930900091' file: - access_level: open_access checksum: 7e5d08ce46b0451b3102eacd3d00f85f content_type: application/pdf creator: chafner date_created: 2021-10-18T10:42:15Z date_updated: 2021-10-18T10:42:15Z file_id: '10150' file_name: elastic-curves-paper.pdf file_size: 17064290 relation: main_file success: 1 - access_level: open_access checksum: 0088643478be7c01a703b5b10767348f content_type: application/pdf creator: chafner date_created: 2021-10-18T10:42:22Z date_updated: 2021-10-18T10:42:22Z file_id: '10151' file_name: elastic-curves-supp.pdf file_size: 547156 relation: supplementary_material file_date_updated: 2021-10-18T10:42:22Z has_accepted_license: '1' intvolume: ' 40' isi: 1 issue: '4' keyword: - Computing methodologies - shape modeling - modeling and simulation - theory of computation - computational geometry - mathematics of computing - mathematical optimization language: - iso: eng month: '07' oa: 1 oa_version: Published Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: ACM Transactions on Graphics publication_identifier: eissn: - 1557-7368 issn: - 0730-0301 publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' related_material: link: - description: News on IST Website relation: press_release url: https://ist.ac.at/en/news/designing-with-elastic-structures/ record: - id: '12897' relation: dissertation_contains status: public scopus_import: '1' status: public title: The design space of plane elastic curves tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 40 year: '2021' ... --- _id: '9208' abstract: - lang: eng 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.' 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).' article_number: '1505' article_processing_charge: No article_type: original author: - first_name: Francesco full_name: Laccone, Francesco last_name: Laccone - first_name: Luigi full_name: Malomo, Luigi last_name: Malomo - first_name: Jesus full_name: Perez Rodriguez, Jesus id: 2DC83906-F248-11E8-B48F-1D18A9856A87 last_name: Perez Rodriguez - first_name: Nico full_name: Pietroni, Nico last_name: Pietroni - first_name: Federico full_name: Ponchio, Federico last_name: Ponchio - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Paolo full_name: Cignoni, Paolo last_name: Cignoni 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' 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.' 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.' 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.' short: F. Laccone, L. Malomo, J. Perez Rodriguez, N. Pietroni, F. Ponchio, B. Bickel, P. Cignoni, SN Applied Sciences 2 (2020). date_created: 2021-02-28T23:01:25Z date_published: 2020-09-01T00:00:00Z date_updated: 2021-03-03T09:43:14Z day: '01' department: - _id: BeBi doi: 10.1007/s42452-020-03305-w intvolume: ' 2' issue: '9' language: - iso: eng month: '09' oa_version: None publication: SN Applied Sciences publication_identifier: eissn: - '25233971' publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: 'A bending-active twisted-arch plywood structure: Computational design and fabrication of the FlexMaps Pavilion' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2 year: '2020' ... --- _id: '7220' abstract: - lang: eng text: BACKGROUND:The introduction of image-guided methods to bypass surgery has resulted in optimized preoperative identification of the recipients and excellent patency rates. However, the recently presented methods have also been resource-consuming. In the present study, we have reported a cost-efficient planning workflow for extracranial-intracranial (EC-IC) revascularization combined with transdural indocyanine green videoangiography (tICG-VA). METHODS:We performed a retrospective review at a single tertiary referral center from 2011 to 2018. A novel software-derived workflow was applied for 25 of 92 bypass procedures during the study period. The precision and accuracy were assessed using tICG-VA identification of the cortical recipients and a comparison of the virtual and actual data. The data from a control group of 25 traditionally planned procedures were also matched. RESULTS:The intraoperative transfer time of the calculated coordinates averaged 0.8 minute (range, 0.4-1.9 minutes). The definitive recipients matched the targeted branches in 80%, and a neighboring branch was used in 16%. Our workflow led to a significant craniotomy size reduction in the study group compared with that in the control group (P = 0.005). tICG-VA was successfully applied in 19 cases. An average of 2 potential recipient arteries were identified transdurally, resulting in tailored durotomy and 3 craniotomy adjustments. Follow-up patency results were available for 49 bypass surgeries, comprising 54 grafts. The overall patency rate was 91% at a median follow-up period of 26 months. No significant difference was found in the patency rate between the study and control groups (P = 0.317). CONCLUSIONS:Our clinical results have validated the presented planning and surgical workflow and support the routine implementation of tICG-VA for recipient identification before durotomy. article_processing_charge: No article_type: original author: - first_name: Philippe full_name: Dodier, Philippe last_name: Dodier - first_name: Thomas full_name: Auzinger, Thomas id: 4718F954-F248-11E8-B48F-1D18A9856A87 last_name: Auzinger orcid: 0000-0002-1546-3265 - first_name: Gabriel full_name: Mistelbauer, Gabriel last_name: Mistelbauer - first_name: Wei Te full_name: Wang, Wei Te last_name: Wang - first_name: Heber full_name: Ferraz-Leite, Heber last_name: Ferraz-Leite - first_name: Andreas full_name: Gruber, Andreas last_name: Gruber - first_name: Wolfgang full_name: Marik, Wolfgang last_name: Marik - first_name: Fabian full_name: Winter, Fabian last_name: Winter - first_name: Gerrit full_name: Fischer, Gerrit last_name: Fischer - first_name: Josa M. full_name: Frischer, Josa M. last_name: Frischer - first_name: Gerhard full_name: Bavinzski, Gerhard last_name: Bavinzski citation: 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 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 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. 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. 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. 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. date_created: 2019-12-29T23:00:48Z date_published: 2020-02-01T00:00:00Z date_updated: 2023-08-17T14:14:23Z day: '01' department: - _id: BeBi doi: 10.1016/j.wneu.2019.11.038 external_id: isi: - '000512878200104' pmid: - '31733380' intvolume: ' 134' isi: 1 issue: '2' language: - iso: eng month: '02' oa_version: None page: e892-e902 pmid: 1 publication: World Neurosurgery publication_identifier: eissn: - 1878-8769 issn: - 1878-8750 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Novel software-derived workflow in extracranial–intracranial bypass surgery validated by transdural indocyanine green videoangiography type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 134 year: '2020' ... --- _id: '7218' 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. article_processing_charge: No article_type: original author: - first_name: Philippe full_name: Dodier, Philippe last_name: Dodier - first_name: Fabian full_name: Winter, Fabian last_name: Winter - first_name: Thomas full_name: Auzinger, Thomas id: 4718F954-F248-11E8-B48F-1D18A9856A87 last_name: Auzinger orcid: 0000-0002-1546-3265 - first_name: Gabriel full_name: Mistelbauer, Gabriel last_name: Mistelbauer - first_name: Josa M. full_name: Frischer, Josa M. last_name: Frischer - first_name: Wei Te full_name: Wang, Wei Te last_name: Wang - first_name: Ammar full_name: Mallouhi, Ammar last_name: Mallouhi - first_name: Wolfgang full_name: Marik, Wolfgang last_name: Marik - first_name: Stefan full_name: Wolfsberger, Stefan last_name: Wolfsberger - first_name: Lukas full_name: Reissig, Lukas last_name: Reissig - first_name: Firas full_name: Hammadi, Firas last_name: Hammadi - first_name: Christian full_name: Matula, Christian last_name: Matula - first_name: Arnulf full_name: Baumann, Arnulf last_name: Baumann - first_name: Gerhard full_name: Bavinzski, Gerhard last_name: Bavinzski citation: 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' 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' 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.' 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.' 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.' 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. date_created: 2019-12-29T23:00:47Z date_published: 2020-08-01T00:00:00Z date_updated: 2023-08-17T14:15:22Z day: '01' department: - _id: BeBi doi: 10.1016/j.ijom.2019.11.011 external_id: isi: - '000556819800005' pmid: - '31866145' intvolume: ' 49' isi: 1 issue: '8' language: - iso: eng month: '08' oa_version: None page: P1007-1015 pmid: 1 publication: International Journal of Oral and Maxillofacial Surgery publication_identifier: eissn: - 1399-0020 issn: - 0901-5027 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: 'Single-stage bone resection and cranioplastic reconstruction: Comparison of a novel software-derived PEEK workflow with the standard reconstructive method' type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 49 year: '2020' ... --- _id: '8386' 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." acknowledged_ssus: - _id: SSU 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. alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Ran full_name: Zhang, Ran id: 4DDBCEB0-F248-11E8-B48F-1D18A9856A87 last_name: Zhang orcid: 0000-0002-3808-281X citation: 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 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 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. 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. 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. 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. date_created: 2020-09-14T01:04:53Z date_published: 2020-09-14T00:00:00Z date_updated: 2023-09-22T09:49:31Z day: '14' ddc: - '003' degree_awarded: PhD department: - _id: BeBi doi: 10.15479/AT:ISTA:8386 ec_funded: 1 file: - access_level: closed checksum: edcf578b6e1c9b0dd81ff72d319b66ba content_type: application/x-zip-compressed creator: rzhang date_created: 2020-09-14T01:02:59Z date_updated: 2020-09-14T12:18:43Z file_id: '8388' file_name: Thesis_Ran.zip file_size: 1245800191 relation: source_file - access_level: open_access checksum: 817e20c33be9247f906925517c56a40d content_type: application/pdf creator: rzhang date_created: 2020-09-15T12:51:53Z date_updated: 2020-09-15T12:51:53Z file_id: '8396' file_name: PhD_thesis_Ran Zhang_20200915.pdf file_size: 161385316 relation: main_file success: 1 file_date_updated: 2020-09-15T12:51:53Z has_accepted_license: '1' language: - iso: eng month: '09' oa: 1 oa_version: Published Version page: '148' project: - _id: 2508E324-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '642841' name: Distributed 3D Object Design - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria related_material: record: - id: '486' relation: part_of_dissertation status: public - id: '1002' relation: part_of_dissertation status: public status: public supervisor: - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 title: Structure-aware computational design and its application to 3D printable volume scattering, mechanism, and multistability type: dissertation user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2020' ... --- _id: '8366' abstract: - lang: eng 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." acknowledged_ssus: - _id: M-Shop - _id: ScienComp 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." alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Ruslan full_name: Guseinov, Ruslan id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87 last_name: Guseinov orcid: 0000-0001-9819-5077 citation: ama: 'Guseinov R. Computational design of curved thin shells: From glass façades to programmable matter. 2020. doi:10.15479/AT:ISTA:8366' apa: 'Guseinov, R. (2020). Computational design of curved thin shells: From glass façades to programmable matter. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8366' 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.' ieee: 'R. Guseinov, “Computational design of curved thin shells: From glass façades to programmable matter,” Institute of Science and Technology Austria, 2020.' ista: 'Guseinov R. 2020. Computational design of curved thin shells: From glass façades to programmable matter. Institute of Science and Technology Austria.' 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.' date_created: 2020-09-10T16:19:55Z date_published: 2020-09-21T00:00:00Z date_updated: 2024-02-21T12:44:29Z day: '21' ddc: - '000' degree_awarded: PhD department: - _id: BeBi doi: 10.15479/AT:ISTA:8366 ec_funded: 1 file: - access_level: open_access checksum: f8da89553da36037296b0a80f14ebf50 content_type: application/pdf creator: rguseino date_created: 2020-09-10T16:11:49Z date_updated: 2020-09-10T16:11:49Z file_id: '8367' file_name: thesis_rguseinov.pdf file_size: 70950442 relation: main_file success: 1 - access_level: closed checksum: e8fd944c960c20e0e27e6548af69121d content_type: application/x-zip-compressed creator: rguseino date_created: 2020-09-11T09:39:48Z date_updated: 2020-09-16T15:11:01Z file_id: '8374' file_name: thesis_source.zip file_size: 76207597 relation: source_file file_date_updated: 2020-09-16T15:11:01Z has_accepted_license: '1' keyword: - computer-aided design - shape modeling - self-morphing - mechanical engineering language: - iso: eng month: '09' oa: 1 oa_version: Published Version page: '118' project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication_identifier: isbn: - 978-3-99078-010-7 issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria related_material: record: - id: '7151' relation: research_data status: deleted - id: '7262' relation: part_of_dissertation status: public - id: '8562' relation: part_of_dissertation status: public - id: '1001' relation: part_of_dissertation status: public - id: '8375' relation: research_data status: public status: public supervisor: - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 title: 'Computational design of curved thin shells: From glass façades to programmable matter' type: dissertation user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2020' ... --- _id: '8562' abstract: - lang: eng 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." acknowledged_ssus: - _id: ScienComp 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." article_number: '208' article_processing_charge: No article_type: original author: - first_name: Konstantinos full_name: Gavriil, Konstantinos last_name: Gavriil - first_name: Ruslan full_name: Guseinov, Ruslan id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87 last_name: Guseinov orcid: 0000-0001-9819-5077 - first_name: Jesus full_name: Perez Rodriguez, Jesus id: 2DC83906-F248-11E8-B48F-1D18A9856A87 last_name: Perez Rodriguez - first_name: Davide full_name: Pellis, Davide last_name: Pellis - first_name: Paul M full_name: Henderson, Paul M id: 13C09E74-18D9-11E9-8878-32CFE5697425 last_name: Henderson orcid: 0000-0002-5198-7445 - first_name: Florian full_name: Rist, Florian last_name: Rist - first_name: Helmut full_name: Pottmann, Helmut last_name: Pottmann - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 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 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 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. 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. 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. mla: Gavriil, Konstantinos, et al. “Computational Design of Cold Bent Glass Façades.” ACM Transactions on Graphics, vol. 39, no. 6, 208, Association for Computing Machinery, 2020, doi:10.1145/3414685.3417843. short: K. Gavriil, R. Guseinov, J. Perez Rodriguez, D. Pellis, P.M. Henderson, F. Rist, H. Pottmann, B. Bickel, ACM Transactions on Graphics 39 (2020). date_created: 2020-09-23T11:30:02Z date_published: 2020-11-26T00:00:00Z date_updated: 2024-02-21T12:43:21Z day: '26' ddc: - '000' department: - _id: BeBi doi: 10.1145/3414685.3417843 ec_funded: 1 external_id: arxiv: - '2009.03667' isi: - '000595589100048' file: - access_level: open_access checksum: c7f67717ad74e670b7daeae732abe151 content_type: application/pdf creator: bbickel date_created: 2023-05-23T20:54:43Z date_updated: 2023-05-23T20:54:43Z file_id: '13084' file_name: coldglass.pdf file_size: 28964641 relation: main_file success: 1 file_date_updated: 2023-05-23T20:54:43Z has_accepted_license: '1' intvolume: ' 39' isi: 1 issue: '6' language: - iso: eng month: '11' oa: 1 oa_version: Submitted Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: ACM Transactions on Graphics publication_identifier: eissn: - 1557-7368 issn: - 0730-0301 publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/bend-dont-break/ record: - id: '8366' relation: dissertation_contains status: public - id: '8761' relation: research_data status: public scopus_import: '1' status: public title: Computational design of cold bent glass façades type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 39 year: '2020' ... --- _id: '8375' abstract: - lang: eng text: 'Supplementary movies showing the following sequences for spatio-temporarily programmed shells: input geometry and actuation time landscape; comparison of morphing processes from a camera recording and a simulation; final actuated shape.' article_processing_charge: No author: - first_name: Ruslan full_name: Guseinov, Ruslan id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87 last_name: Guseinov orcid: 0000-0001-9819-5077 citation: ama: 'Guseinov R. Supplementary data for “Computational design of curved thin shells: from glass façades to programmable matter.” 2020. doi:10.15479/AT:ISTA:8375' 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' chicago: 'Guseinov, Ruslan. “Supplementary Data for ‘Computational Design of Curved Thin Shells: From Glass Façades to Programmable Matter.’” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8375.' 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.' 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.' mla: 'Guseinov, Ruslan. Supplementary Data for “Computational Design of Curved Thin Shells: From Glass Façades to Programmable Matter.” Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8375.' short: R. Guseinov, (2020). contributor: - contributor_type: researcher first_name: Ruslan id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87 last_name: Guseinov orcid: 0000-0001-9819-5077 - contributor_type: researcher first_name: Connor last_name: McMahan - contributor_type: researcher first_name: Jesus id: 2DC83906-F248-11E8-B48F-1D18A9856A87 last_name: Perez Rodriguez - contributor_type: researcher first_name: Chiara last_name: Daraio - contributor_type: researcher first_name: Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 date_created: 2020-09-11T09:52:54Z date_published: 2020-09-21T00:00:00Z date_updated: 2024-02-21T12:44:29Z day: '21' ddc: - '000' department: - _id: BeBi doi: 10.15479/AT:ISTA:8375 ec_funded: 1 file: - access_level: open_access checksum: 4029ffd65fb82ef2366b2fc2a4908e16 content_type: video/mp4 creator: rguseino date_created: 2020-09-11T09:45:21Z date_updated: 2020-09-11T09:45:21Z file_id: '8376' file_name: supplementary_movie_1.mp4 file_size: 29214988 relation: main_file success: 1 - access_level: open_access checksum: 8ed03b04d80f1a4e622cb22e6100afd8 content_type: video/mp4 creator: rguseino date_created: 2020-09-11T09:45:25Z date_updated: 2020-09-11T09:45:25Z file_id: '8377' file_name: supplementary_movie_2.mp4 file_size: 28449475 relation: main_file success: 1 - access_level: open_access checksum: ad6864afb5e694e5c52a88fba4e02eea content_type: video/mp4 creator: rguseino date_created: 2020-09-11T09:45:28Z date_updated: 2020-09-11T09:45:28Z file_id: '8378' file_name: supplementary_movie_3.mp4 file_size: 26315853 relation: main_file success: 1 - access_level: open_access checksum: b079cef7871fe1afb69af0e2b099f3b1 content_type: video/mp4 creator: rguseino date_created: 2020-09-11T09:45:33Z date_updated: 2020-09-11T09:45:33Z file_id: '8379' file_name: supplementary_movie_4.mp4 file_size: 25198755 relation: main_file success: 1 - access_level: open_access checksum: 9d1d48a8ed5c109a999c51b044ee523d content_type: video/mp4 creator: rguseino date_created: 2020-09-11T09:45:36Z date_updated: 2020-09-11T09:45:36Z file_id: '8380' file_name: supplementary_movie_5.mp4 file_size: 29011354 relation: main_file success: 1 - access_level: open_access checksum: d414d0059e982d752d218756b3c3ce05 content_type: text/plain creator: rguseino date_created: 2020-09-11T09:52:36Z date_updated: 2020-09-11T09:52:36Z file_id: '8381' file_name: readme.txt file_size: 586 relation: main_file success: 1 file_date_updated: 2020-09-11T09:52:36Z has_accepted_license: '1' month: '09' oa: 1 oa_version: Published Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publisher: Institute of Science and Technology Austria related_material: record: - id: '8366' relation: used_in_publication status: public status: public title: 'Supplementary data for "Computational design of curved thin shells: from glass façades to programmable matter"' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: research_data user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2020' ... --- _id: '8761' acknowledged_ssus: - _id: ScienComp article_processing_charge: No author: - first_name: Ruslan full_name: Guseinov, Ruslan id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87 last_name: Guseinov orcid: 0000-0001-9819-5077 citation: ama: Guseinov R. 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 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. 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. mla: Guseinov, Ruslan. Supplementary Data for “Computational Design of Cold Bent Glass Façades.” Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8761. short: R. Guseinov, (2020). contributor: - contributor_type: researcher first_name: Konstantinos last_name: Gavriil - contributor_type: researcher first_name: Ruslan id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87 last_name: Guseinov orcid: 0000-0001-9819-5077 - contributor_type: researcher first_name: Jesus id: 2DC83906-F248-11E8-B48F-1D18A9856A87 last_name: Perez Rodriguez - contributor_type: researcher first_name: Davide last_name: Pellis - contributor_type: researcher first_name: Paul M id: 13C09E74-18D9-11E9-8878-32CFE5697425 last_name: Henderson orcid: 0000-0002-5198-7445 - contributor_type: researcher first_name: Florian last_name: Rist - contributor_type: researcher first_name: Helmut last_name: Pottmann - contributor_type: researcher first_name: Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 date_created: 2020-11-16T10:47:18Z date_published: 2020-11-23T00:00:00Z date_updated: 2024-02-21T12:43:22Z day: '23' ddc: - '000' department: - _id: BeBi doi: 10.15479/AT:ISTA:8761 ec_funded: 1 file: - access_level: open_access checksum: f5ae57b97017b9f61081032703361233 content_type: application/x-gzip creator: rguseino date_created: 2020-11-16T10:31:29Z date_updated: 2020-11-16T10:31:29Z file_id: '8762' file_name: mdn_model.tar.gz file_size: 15378270 relation: main_file success: 1 - access_level: open_access checksum: b0d25e04060ee78c585ee2f23542c744 content_type: application/x-gzip creator: rguseino date_created: 2020-11-16T10:43:23Z date_updated: 2020-11-16T10:43:23Z file_id: '8763' file_name: optimal_panels_data.tar.gz file_size: 615387734 relation: main_file success: 1 - access_level: open_access checksum: 69c1dde3434ada86d125e0c2588caf1e content_type: text/plain creator: rguseino date_created: 2020-11-18T10:04:59Z date_updated: 2020-11-18T10:04:59Z file_id: '8770' file_name: readme.txt file_size: 1228 relation: main_file success: 1 file_date_updated: 2020-11-18T10:04:59Z has_accepted_license: '1' month: '11' oa: 1 oa_version: Published Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publisher: Institute of Science and Technology Austria related_material: link: - relation: software url: https://github.com/russelmann/cold-glass-acm record: - id: '8562' relation: used_in_publication status: public status: public title: Supplementary data for "Computational design of cold bent glass façades" tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: research_data user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2020' ... --- _id: '7262' abstract: - lang: eng text: Advances in shape-morphing materials, such as hydrogels, shape-memory polymers and light-responsive polymers have enabled prescribing self-directed deformations of initially flat geometries. However, most proposed solutions evolve towards a target geometry without considering time-dependent actuation paths. To achieve more complex geometries and avoid self-collisions, it is critical to encode a spatial and temporal shape evolution within the initially flat shell. Recent realizations of time-dependent morphing are limited to the actuation of few, discrete hinges and cannot form doubly curved surfaces. Here, we demonstrate a method for encoding temporal shape evolution in architected shells that assume complex shapes and doubly curved geometries. The shells are non-periodic tessellations of pre-stressed contractile unit cells that soften in water at rates prescribed locally by mesostructure geometry. The ensuing midplane contraction is coupled to the formation of encoded curvatures. We propose an inverse design tool based on a data-driven model for unit cells’ temporal responses. article_number: '237' article_processing_charge: No article_type: original author: - first_name: Ruslan full_name: Guseinov, Ruslan id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87 last_name: Guseinov orcid: 0000-0001-9819-5077 - first_name: Connor full_name: McMahan, Connor last_name: McMahan - first_name: Jesus full_name: Perez Rodriguez, Jesus id: 2DC83906-F248-11E8-B48F-1D18A9856A87 last_name: Perez Rodriguez - first_name: Chiara full_name: Daraio, Chiara last_name: Daraio - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 citation: 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 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 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. 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. mla: Guseinov, Ruslan, et al. “Programming Temporal Morphing of Self-Actuated Shells.” Nature Communications, vol. 11, 237, Springer Nature, 2020, doi:10.1038/s41467-019-14015-2. short: R. Guseinov, C. McMahan, J. Perez Rodriguez, C. Daraio, B. Bickel, Nature Communications 11 (2020). date_created: 2020-01-13T16:54:26Z date_published: 2020-01-13T00:00:00Z date_updated: 2024-02-21T12:45:02Z day: '13' ddc: - '000' department: - _id: BeBi doi: 10.1038/s41467-019-14015-2 ec_funded: 1 external_id: isi: - '000511916800015' file: - access_level: open_access checksum: 7db23fef2f4cda712f17f1004116ddff content_type: application/pdf creator: rguseino date_created: 2020-01-15T14:35:34Z date_updated: 2020-07-14T12:47:55Z file_id: '7336' file_name: 2020_NatureComm_Guseinov.pdf file_size: 1315270 relation: main_file file_date_updated: 2020-07-14T12:47:55Z has_accepted_license: '1' intvolume: ' 11' isi: 1 keyword: - Design - Synthesis and processing - Mechanical engineering - Polymers language: - iso: eng month: '01' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: Nature Communications publication_identifier: issn: - 2041-1723 publication_status: published publisher: Springer Nature quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/geometry-meets-time/ record: - id: '8366' relation: dissertation_contains status: public - id: '7154' relation: research_data status: public scopus_import: '1' status: public title: Programming temporal morphing of self-actuated shells tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 11 year: '2020' ... --- _id: '8766' abstract: - lang: eng text: "The “procedural” approach to animating ocean waves is the dominant algorithm for animating larger bodies of water in\r\ninteractive applications as well as in off-line productions — it provides high visual quality with a low computational demand. In this paper, we widen the applicability of procedural water wave animation with an extension that guarantees the satisfaction of boundary conditions imposed by terrain while still approximating physical wave behavior. In combination with a particle system that models wave breaking, foam, and spray, this allows us to naturally model waves interacting with beaches and rocks. Our system is able to animate waves at large scales at interactive frame rates on a commodity PC." article_processing_charge: No article_type: original author: - first_name: Stefan full_name: Jeschke, Stefan id: 44D6411A-F248-11E8-B48F-1D18A9856A87 last_name: Jeschke - first_name: Christian full_name: Hafner, Christian id: 400429CC-F248-11E8-B48F-1D18A9856A87 last_name: Hafner - first_name: Nuttapong full_name: Chentanez, Nuttapong last_name: Chentanez - first_name: Miles full_name: Macklin, Miles last_name: Macklin - first_name: Matthias full_name: Müller-Fischer, Matthias last_name: Müller-Fischer - first_name: Christopher J full_name: Wojtan, Christopher J id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87 last_name: Wojtan orcid: 0000-0001-6646-5546 citation: ama: Jeschke S, Hafner C, Chentanez N, Macklin M, Müller-Fischer M, Wojtan C. Making procedural water waves boundary-aware. Computer Graphics forum. 2020;39(8):47-54. doi:10.1111/cgf.14100 apa: 'Jeschke, S., Hafner, C., Chentanez, N., Macklin, M., Müller-Fischer, M., & Wojtan, C. (2020). Making procedural water waves boundary-aware. Computer Graphics Forum. Online Symposium: Wiley. https://doi.org/10.1111/cgf.14100' chicago: Jeschke, Stefan, Christian Hafner, Nuttapong Chentanez, Miles Macklin, Matthias Müller-Fischer, and Chris Wojtan. “Making Procedural Water Waves Boundary-Aware.” Computer Graphics Forum. Wiley, 2020. https://doi.org/10.1111/cgf.14100. ieee: S. Jeschke, C. Hafner, N. Chentanez, M. Macklin, M. Müller-Fischer, and C. Wojtan, “Making procedural water waves boundary-aware,” Computer Graphics forum, vol. 39, no. 8. Wiley, pp. 47–54, 2020. ista: Jeschke S, Hafner C, Chentanez N, Macklin M, Müller-Fischer M, Wojtan C. 2020. Making procedural water waves boundary-aware. Computer Graphics forum. 39(8), 47–54. mla: Jeschke, Stefan, et al. “Making Procedural Water Waves Boundary-Aware.” Computer Graphics Forum, vol. 39, no. 8, Wiley, 2020, pp. 47–54, doi:10.1111/cgf.14100. short: S. Jeschke, C. Hafner, N. Chentanez, M. Macklin, M. Müller-Fischer, C. Wojtan, Computer Graphics Forum 39 (2020) 47–54. conference: end_date: 2020-10-09 location: Online Symposium name: 'SCA: Symposium on Computer Animation' start_date: 2020-10-06 date_created: 2020-11-17T10:47:48Z date_published: 2020-12-01T00:00:00Z date_updated: 2024-02-28T13:58:11Z day: '01' department: - _id: ChWo - _id: BeBi doi: 10.1111/cgf.14100 ec_funded: 1 external_id: isi: - '000591780400005' intvolume: ' 39' isi: 1 issue: '8' language: - iso: eng month: '12' oa_version: None page: 47-54 project: - _id: 2533E772-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '638176' name: Efficient Simulation of Natural Phenomena at Extremely Large Scales - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: Computer Graphics forum publication_status: published publisher: Wiley quality_controlled: '1' scopus_import: '1' status: public title: Making procedural water waves boundary-aware type: journal_article user_id: 2EBD1598-F248-11E8-B48F-1D18A9856A87 volume: 39 year: '2020' ... --- _id: '6660' abstract: - lang: eng text: "Commercially available full-color 3D printing allows for detailed control of material deposition in a volume, but an exact reproduction of a target surface appearance is hampered by the strong subsurface scattering that causes nontrivial volumetric cross-talk at the print surface. Previous work showed how an iterative optimization scheme based on accumulating absorptive materials at the surface can be used to find a volumetric distribution of print materials that closely approximates a given target appearance.\r\n\r\nIn this work, we first revisit the assumption that pushing the absorptive materials to the surface results in minimal volumetric cross-talk. We design a full-fledged optimization on a small domain for this task and confirm this previously reported heuristic. Then, we extend the above approach that is critically limited to color reproduction on planar surfaces, to arbitrary 3D shapes. Our method enables high-fidelity color texture reproduction on 3D prints by effectively compensating for internal light scattering within arbitrarily shaped objects. In addition, we propose a content-aware gamut mapping that significantly improves color reproduction for the pathological case of thin geometric features. Using a wide range of sample objects with complex textures and geometries, we demonstrate color reproduction whose fidelity is superior to state-of-the-art drivers for color 3D printers." article_number: '111' article_processing_charge: No author: - first_name: Denis full_name: Sumin, Denis last_name: Sumin - first_name: Tim full_name: Weyrich, Tim last_name: Weyrich - first_name: Tobias full_name: Rittig, Tobias last_name: Rittig - first_name: Vahid full_name: Babaei, Vahid last_name: Babaei - first_name: Thomas full_name: Nindel, Thomas last_name: Nindel - first_name: Alexander full_name: Wilkie, Alexander last_name: Wilkie - first_name: Piotr full_name: Didyk, Piotr last_name: Didyk - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Jaroslav full_name: Křivánek, Jaroslav last_name: Křivánek - first_name: Karol full_name: Myszkowski, Karol last_name: Myszkowski citation: ama: Sumin D, Weyrich T, Rittig T, et al. Geometry-aware scattering compensation for 3D printing. ACM Transactions on Graphics. 2019;38(4). doi:10.1145/3306346.3322992 apa: Sumin, D., Weyrich, T., Rittig, T., Babaei, V., Nindel, T., Wilkie, A., … Myszkowski, K. (2019). Geometry-aware scattering compensation for 3D printing. ACM Transactions on Graphics. ACM. https://doi.org/10.1145/3306346.3322992 chicago: Sumin, Denis, Tim Weyrich, Tobias Rittig, Vahid Babaei, Thomas Nindel, Alexander Wilkie, Piotr Didyk, Bernd Bickel, Jaroslav Křivánek, and Karol Myszkowski. “Geometry-Aware Scattering Compensation for 3D Printing.” ACM Transactions on Graphics. ACM, 2019. https://doi.org/10.1145/3306346.3322992. ieee: D. Sumin et al., “Geometry-aware scattering compensation for 3D printing,” ACM Transactions on Graphics, vol. 38, no. 4. ACM, 2019. ista: Sumin D, Weyrich T, Rittig T, Babaei V, Nindel T, Wilkie A, Didyk P, Bickel B, Křivánek J, Myszkowski K. 2019. Geometry-aware scattering compensation for 3D printing. ACM Transactions on Graphics. 38(4), 111. mla: Sumin, Denis, et al. “Geometry-Aware Scattering Compensation for 3D Printing.” ACM Transactions on Graphics, vol. 38, no. 4, 111, ACM, 2019, doi:10.1145/3306346.3322992. short: D. Sumin, T. Weyrich, T. Rittig, V. Babaei, T. Nindel, A. Wilkie, P. Didyk, B. Bickel, J. Křivánek, K. Myszkowski, ACM Transactions on Graphics 38 (2019). date_created: 2019-07-22T07:22:28Z date_published: 2019-07-04T00:00:00Z date_updated: 2023-08-29T06:40:49Z day: '04' ddc: - '000' department: - _id: BeBi doi: 10.1145/3306346.3322992 ec_funded: 1 external_id: isi: - '000475740600085' file: - access_level: open_access checksum: 43c2019d6b48ed9c56e31686c4c2d1f5 content_type: application/pdf creator: dernst date_created: 2019-07-24T07:36:08Z date_updated: 2020-07-14T12:47:36Z file_id: '6669' file_name: 2019_ACM_Sumin_AuthorVersion.pdf file_size: 10109800 relation: main_file - access_level: open_access checksum: f80f365a04e35855fa467ea7ab26b16c content_type: application/zip creator: dernst date_created: 2019-10-11T06:51:07Z date_updated: 2020-07-14T12:47:36Z file_id: '6938' file_name: sumin19geometry-aware-suppl.zip file_size: 11051245 relation: supplementary_material file_date_updated: 2020-07-14T12:47:36Z has_accepted_license: '1' intvolume: ' 38' isi: 1 issue: '4' language: - iso: eng month: '07' oa: 1 oa_version: Submitted Version project: - _id: 2508E324-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '642841' name: Distributed 3D Object Design - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: ACM Transactions on Graphics publication_identifier: issn: - 0730-0301 publication_status: published publisher: ACM quality_controlled: '1' scopus_import: '1' status: public title: Geometry-aware scattering compensation for 3D printing type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 38 year: '2019' ... --- _id: '6650' abstract: - lang: eng text: We propose a novel technique for the automatic design of molds to cast highly complex shapes. The technique generates composite, two-piece molds. Each mold piece is made up of a hard plastic shell and a flexible silicone part. Thanks to the thin, soft, and smartly shaped silicone part, which is kept in place by a hard plastic shell, we can cast objects of unprecedented complexity. An innovative algorithm based on a volumetric analysis defines the layout of the internal cuts in the silicone mold part. Our approach can robustly handle thin protruding features and intertwined topologies that have caused previous methods to fail. We compare our results with state of the art techniques, and we demonstrate the casting of shapes with extremely complex geometry. article_number: '110' article_processing_charge: No author: - first_name: Thomas full_name: Alderighi, Thomas last_name: Alderighi - first_name: Luigi full_name: Malomo, Luigi last_name: Malomo - first_name: Daniela full_name: Giorgi, Daniela last_name: Giorgi - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Paolo full_name: Cignoni, Paolo last_name: Cignoni - first_name: Nico full_name: Pietroni, Nico last_name: Pietroni citation: ama: Alderighi T, Malomo L, Giorgi D, Bickel B, Cignoni P, Pietroni N. Volume-aware design of composite molds. ACM Transactions on Graphics. 2019;38(4). doi:10.1145/3306346.3322981 apa: Alderighi, T., Malomo, L., Giorgi, D., Bickel, B., Cignoni, P., & Pietroni, N. (2019). Volume-aware design of composite molds. ACM Transactions on Graphics. ACM. https://doi.org/10.1145/3306346.3322981 chicago: Alderighi, Thomas, Luigi Malomo, Daniela Giorgi, Bernd Bickel, Paolo Cignoni, and Nico Pietroni. “Volume-Aware Design of Composite Molds.” ACM Transactions on Graphics. ACM, 2019. https://doi.org/10.1145/3306346.3322981. ieee: T. Alderighi, L. Malomo, D. Giorgi, B. Bickel, P. Cignoni, and N. Pietroni, “Volume-aware design of composite molds,” ACM Transactions on Graphics, vol. 38, no. 4. ACM, 2019. ista: Alderighi T, Malomo L, Giorgi D, Bickel B, Cignoni P, Pietroni N. 2019. Volume-aware design of composite molds. ACM Transactions on Graphics. 38(4), 110. mla: Alderighi, Thomas, et al. “Volume-Aware Design of Composite Molds.” ACM Transactions on Graphics, vol. 38, no. 4, 110, ACM, 2019, doi:10.1145/3306346.3322981. short: T. Alderighi, L. Malomo, D. Giorgi, B. Bickel, P. Cignoni, N. Pietroni, ACM Transactions on Graphics 38 (2019). date_created: 2019-07-19T06:18:15Z date_published: 2019-07-01T00:00:00Z date_updated: 2023-08-29T06:35:52Z day: '01' ddc: - '000' department: - _id: BeBi doi: 10.1145/3306346.3322981 ec_funded: 1 external_id: isi: - '000475740600084' file: - access_level: open_access checksum: b4562af94672b44d2a501046427412af content_type: application/pdf creator: dernst date_created: 2019-07-19T06:18:53Z date_updated: 2020-07-14T12:47:35Z file_id: '6651' file_name: 2019_ACM_Alderighi_AuthorVersion.pdf file_size: 74316182 relation: main_file file_date_updated: 2020-07-14T12:47:35Z has_accepted_license: '1' intvolume: ' 38' isi: 1 issue: '4' language: - iso: eng month: '07' oa: 1 oa_version: Submitted Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: ACM Transactions on Graphics publication_identifier: issn: - 0730-0301 publication_status: published publisher: ACM quality_controlled: '1' related_material: link: - description: YouTube Video relation: supplementary_material url: https://youtu.be/SO349S8-x_w scopus_import: '1' status: public title: Volume-aware design of composite molds type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 38 year: '2019' ... --- _id: '9261' abstract: - lang: eng text: 'Bending-active structures are able to efficiently produce complex curved shapes starting from flat panels. The desired deformation of the panels derives from the proper selection of their elastic properties. Optimized panels, called FlexMaps, are designed such that, once they are bent and assembled, the resulting static equilibrium configuration matches a desired input 3D shape. The FlexMaps elastic properties are controlled by locally varying spiraling geometric mesostructures, which are optimized in size and shape to match the global curvature (i.e., bending requests) of the target shape. The design pipeline starts from a quad mesh representing the input 3D shape, which defines the edge size and the total amount of spirals: every quad will embed one spiral. Then, an optimization algorithm tunes the geometry of the spirals by using a simplified pre-computed rod model. This rod model is derived from a non-linear regression algorithm which approximates the non-linear behavior of solid FEM spiral models subject to hundreds of load combinations. This innovative pipeline has been applied to the project of a lightweight plywood pavilion named FlexMaps Pavilion, which is a single-layer piecewise twisted arc that fits a bounding box of 3.90x3.96x3.25 meters.' article_processing_charge: No author: - first_name: Francesco full_name: Laccone, Francesco last_name: Laccone - first_name: Luigi full_name: Malomo, Luigi last_name: Malomo - first_name: Jesus full_name: Perez Rodriguez, Jesus id: 2DC83906-F248-11E8-B48F-1D18A9856A87 last_name: Perez Rodriguez - first_name: Nico full_name: Pietroni, Nico last_name: Pietroni - first_name: Federico full_name: Ponchio, Federico last_name: Ponchio - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Paolo full_name: Cignoni, Paolo last_name: Cignoni citation: ama: 'Laccone F, Malomo L, Perez Rodriguez J, et al. FlexMaps Pavilion: A twisted arc made of mesostructured flat flexible panels. In: IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE. International Center for Numerical Methods in Engineering; 2019:509-515.' apa: 'Laccone, F., Malomo, L., Perez Rodriguez, J., Pietroni, N., Ponchio, F., Bickel, B., & Cignoni, P. (2019). FlexMaps Pavilion: A twisted arc made of mesostructured flat flexible panels. In IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE (pp. 509–515). Barcelona, Spain: International Center for Numerical Methods in Engineering.' chicago: 'Laccone, Francesco, Luigi Malomo, Jesus Perez Rodriguez, Nico Pietroni, Federico Ponchio, Bernd Bickel, and Paolo Cignoni. “FlexMaps Pavilion: A Twisted Arc Made of Mesostructured Flat Flexible Panels.” In IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE, 509–15. International Center for Numerical Methods in Engineering, 2019.' ieee: 'F. Laccone et al., “FlexMaps Pavilion: A twisted arc made of mesostructured flat flexible panels,” in IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE, Barcelona, Spain, 2019, pp. 509–515.' ista: 'Laccone F, Malomo L, Perez Rodriguez J, Pietroni N, Ponchio F, Bickel B, Cignoni P. 2019. FlexMaps Pavilion: A twisted arc made of mesostructured flat flexible panels. IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE. IASS: International Association for Shell and Spatial Structures, 509–515.' mla: 'Laccone, Francesco, et al. “FlexMaps Pavilion: A Twisted Arc Made of Mesostructured Flat Flexible Panels.” IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE, International Center for Numerical Methods in Engineering, 2019, pp. 509–15.' short: F. Laccone, L. Malomo, J. Perez Rodriguez, N. Pietroni, F. Ponchio, B. Bickel, P. Cignoni, in:, IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE, International Center for Numerical Methods in Engineering, 2019, pp. 509–515. conference: end_date: 2019-10-10 location: Barcelona, Spain name: 'IASS: International Association for Shell and Spatial Structures' start_date: 2019-10-07 date_created: 2021-03-21T23:01:21Z date_published: 2019-10-10T00:00:00Z date_updated: 2023-09-08T11:21:54Z day: '10' department: - _id: BeBi external_id: isi: - '000563497600059' isi: 1 language: - iso: eng month: '10' oa_version: None page: 509-515 publication: IASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE publication_identifier: isbn: - '9788412110104' issn: - 2518-6582 publication_status: published publisher: International Center for Numerical Methods in Engineering quality_controlled: '1' scopus_import: '1' status: public title: 'FlexMaps Pavilion: A twisted arc made of mesostructured flat flexible panels' type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2019' ... --- _id: '7154' article_processing_charge: No author: - first_name: Ruslan full_name: Guseinov, Ruslan id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87 last_name: Guseinov orcid: 0000-0001-9819-5077 citation: ama: Guseinov R. Supplementary data for “Programming temporal morphing of self-actuated shells.” 2019. doi:10.15479/AT:ISTA:7154 apa: Guseinov, R. (2019). Supplementary data for “Programming temporal morphing of self-actuated shells.” Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:7154 chicago: Guseinov, Ruslan. “Supplementary Data for ‘Programming Temporal Morphing of Self-Actuated Shells.’” Institute of Science and Technology Austria, 2019. https://doi.org/10.15479/AT:ISTA:7154. ieee: R. Guseinov, “Supplementary data for ‘Programming temporal morphing of self-actuated shells.’” Institute of Science and Technology Austria, 2019. ista: Guseinov R. 2019. Supplementary data for ‘Programming temporal morphing of self-actuated shells’, Institute of Science and Technology Austria, 10.15479/AT:ISTA:7154. mla: Guseinov, Ruslan. Supplementary Data for “Programming Temporal Morphing of Self-Actuated Shells.” Institute of Science and Technology Austria, 2019, doi:10.15479/AT:ISTA:7154. short: R. Guseinov, (2019). contributor: - first_name: Ruslan id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87 last_name: Guseinov orcid: 0000-0001-9819-5077 - first_name: Connor last_name: McMahan - first_name: Jesus id: 2DC83906-F248-11E8-B48F-1D18A9856A87 last_name: Perez Rodriguez - first_name: Chiara last_name: Daraio - first_name: Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 date_created: 2019-12-09T07:52:46Z date_published: 2019-12-06T00:00:00Z date_updated: 2024-02-21T12:45:03Z day: '06' ddc: - '000' department: - _id: BeBi doi: 10.15479/AT:ISTA:7154 ec_funded: 1 file: - access_level: open_access checksum: 155133e6e188e85b3c0676a5e70b9341 content_type: application/x-zip-compressed creator: dernst date_created: 2019-12-09T07:52:17Z date_updated: 2020-07-14T12:47:50Z file_id: '7155' file_name: temporal_morphing_supp_data.zip file_size: 65307107 relation: main_file file_date_updated: 2020-07-14T12:47:50Z has_accepted_license: '1' month: '12' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publisher: Institute of Science and Technology Austria related_material: record: - id: '8433' relation: used_in_publication status: deleted - id: '7262' relation: used_in_publication status: public status: public title: Supplementary data for "Programming temporal morphing of self-actuated shells" tmp: image: /images/cc_0.png legal_code_url: https://creativecommons.org/publicdomain/zero/1.0/legalcode name: Creative Commons Public Domain Dedication (CC0 1.0) short: CC0 (1.0) type: research_data user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2019' ... --- _id: '7117' abstract: - lang: eng text: We propose a novel generic shape optimization method for CAD models based on the eXtended Finite Element Method (XFEM). Our method works directly on the intersection between the model and a regular simulation grid, without the need to mesh or remesh, thus removing a bottleneck of classical shape optimization strategies. This is made possible by a novel hierarchical integration scheme that accurately integrates finite element quantities with sub-element precision. For optimization, we efficiently compute analytical shape derivatives of the entire framework, from model intersection to integration rule generation and XFEM simulation. Moreover, we describe a differentiable projection of shape parameters onto a constraint manifold spanned by user-specified shape preservation, consistency, and manufacturability constraints. We demonstrate the utility of our approach by optimizing mass distribution, strength-to-weight ratio, and inverse elastic shape design objectives directly on parameterized 3D CAD models. article_number: '157' article_processing_charge: No article_type: original author: - first_name: Christian full_name: Hafner, Christian id: 400429CC-F248-11E8-B48F-1D18A9856A87 last_name: Hafner - first_name: Christian full_name: Schumacher, Christian last_name: Schumacher - first_name: Espen full_name: Knoop, Espen last_name: Knoop - first_name: Thomas full_name: Auzinger, Thomas id: 4718F954-F248-11E8-B48F-1D18A9856A87 last_name: Auzinger orcid: 0000-0002-1546-3265 - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Moritz full_name: Bächer, Moritz last_name: Bächer citation: ama: 'Hafner C, Schumacher C, Knoop E, Auzinger T, Bickel B, Bächer M. X-CAD: Optimizing CAD Models with Extended Finite Elements. ACM Transactions on Graphics. 2019;38(6). doi:10.1145/3355089.3356576' apa: 'Hafner, C., Schumacher, C., Knoop, E., Auzinger, T., Bickel, B., & Bächer, M. (2019). X-CAD: Optimizing CAD Models with Extended Finite Elements. ACM Transactions on Graphics. ACM. https://doi.org/10.1145/3355089.3356576' chicago: 'Hafner, Christian, Christian Schumacher, Espen Knoop, Thomas Auzinger, Bernd Bickel, and Moritz Bächer. “X-CAD: Optimizing CAD Models with Extended Finite Elements.” ACM Transactions on Graphics. ACM, 2019. https://doi.org/10.1145/3355089.3356576.' ieee: 'C. Hafner, C. Schumacher, E. Knoop, T. Auzinger, B. Bickel, and M. Bächer, “X-CAD: Optimizing CAD Models with Extended Finite Elements,” ACM Transactions on Graphics, vol. 38, no. 6. ACM, 2019.' ista: 'Hafner C, Schumacher C, Knoop E, Auzinger T, Bickel B, Bächer M. 2019. X-CAD: Optimizing CAD Models with Extended Finite Elements. ACM Transactions on Graphics. 38(6), 157.' mla: 'Hafner, Christian, et al. “X-CAD: Optimizing CAD Models with Extended Finite Elements.” ACM Transactions on Graphics, vol. 38, no. 6, 157, ACM, 2019, doi:10.1145/3355089.3356576.' short: C. Hafner, C. Schumacher, E. Knoop, T. Auzinger, B. Bickel, M. Bächer, ACM Transactions on Graphics 38 (2019). date_created: 2019-11-26T14:22:09Z date_published: 2019-11-06T00:00:00Z date_updated: 2024-03-27T23:30:46Z day: '06' ddc: - '000' department: - _id: BeBi doi: 10.1145/3355089.3356576 ec_funded: 1 external_id: isi: - '000498397300007' file: - access_level: open_access checksum: 56a2fb019adcb556d2b022f5e5acb68c content_type: application/pdf creator: bbickel date_created: 2019-11-26T14:24:26Z date_updated: 2020-07-14T12:47:49Z file_id: '7119' file_name: xcad_sup_mat_siga19.pdf file_size: 1673176 relation: supplementary_material title: X-CAD Supplemental Material - access_level: open_access checksum: 5f29d76aceb5102e766cbab9b17d776e content_type: application/pdf creator: bbickel date_created: 2019-11-26T14:24:27Z date_updated: 2020-07-14T12:47:49Z description: This is the author's version of the work. file_id: '7120' file_name: XCAD_authors_version.pdf file_size: 14563618 relation: main_file title: 'X-CAD: Optimizing CAD Models with Extended Finite Elements' - access_level: open_access checksum: 0d31e123286cbec9e28b2001c2bb0d55 content_type: video/mp4 creator: bbickel date_created: 2019-11-26T14:27:37Z date_updated: 2020-07-14T12:47:49Z file_id: '7121' file_name: XCAD_video.mp4 file_size: 259979129 relation: main_file file_date_updated: 2020-07-14T12:47:49Z has_accepted_license: '1' intvolume: ' 38' isi: 1 issue: '6' language: - iso: eng month: '11' oa: 1 oa_version: Submitted Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: ACM Transactions on Graphics publication_identifier: issn: - 0730-0301 publication_status: published publisher: ACM quality_controlled: '1' related_material: record: - id: '12897' relation: dissertation_contains status: public scopus_import: '1' status: public title: 'X-CAD: Optimizing CAD Models with Extended Finite Elements' type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 38 year: '2019' ... --- _id: '304' abstract: - lang: eng text: "Additive manufacturing has recently seen drastic improvements in resolution, making it now possible to fabricate features at scales of hundreds or even dozens of nanometers, which previously required very expensive lithographic methods.\r\nAs a result, additive manufacturing now seems poised for optical applications, including those relevant to computer graphics, such as material design, as well as display and imaging applications.\r\n \r\nIn this work, we explore the use of additive manufacturing for generating structural colors, where the structures are designed using a fabrication-aware optimization process.\r\nThis requires a combination of full-wave simulation, a feasible parameterization of the design space, and a tailored optimization procedure.\r\nMany of these components should be re-usable for the design of other optical structures at this scale.\r\n \r\nWe show initial results of material samples fabricated based on our designs.\r\nWhile these suffer from the prototype character of state-of-the-art fabrication hardware, we believe they clearly demonstrate the potential of additive nanofabrication for structural colors and other graphics applications." acknowledgement: This work was in part supported by King Abdullah University of Science and Technology Baseline Funding. alternative_title: - ACM Transactions on Graphics article_number: '159' article_processing_charge: No author: - first_name: Thomas full_name: Auzinger, Thomas id: 4718F954-F248-11E8-B48F-1D18A9856A87 last_name: Auzinger orcid: 0000-0002-1546-3265 - first_name: Wolfgang full_name: Heidrich, Wolfgang last_name: Heidrich - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 citation: ama: Auzinger T, Heidrich W, Bickel B. Computational design of nanostructural color for additive manufacturing. ACM Transactions on Graphics. 2018;37(4). doi:10.1145/3197517.3201376 apa: Auzinger, T., Heidrich, W., & Bickel, B. (2018). Computational design of nanostructural color for additive manufacturing. ACM Transactions on Graphics. ACM. https://doi.org/10.1145/3197517.3201376 chicago: Auzinger, Thomas, Wolfgang Heidrich, and Bernd Bickel. “Computational Design of Nanostructural Color for Additive Manufacturing.” ACM Transactions on Graphics. ACM, 2018. https://doi.org/10.1145/3197517.3201376. ieee: T. Auzinger, W. Heidrich, and B. Bickel, “Computational design of nanostructural color for additive manufacturing,” ACM Transactions on Graphics, vol. 37, no. 4. ACM, 2018. ista: Auzinger T, Heidrich W, Bickel B. 2018. Computational design of nanostructural color for additive manufacturing. ACM Transactions on Graphics. 37(4), 159. mla: Auzinger, Thomas, et al. “Computational Design of Nanostructural Color for Additive Manufacturing.” ACM Transactions on Graphics, vol. 37, no. 4, 159, ACM, 2018, doi:10.1145/3197517.3201376. short: T. Auzinger, W. Heidrich, B. Bickel, ACM Transactions on Graphics 37 (2018). date_created: 2018-12-11T11:45:43Z date_published: 2018-08-01T00:00:00Z date_updated: 2023-09-11T12:46:13Z day: '01' ddc: - '000' - '535' - '680' department: - _id: BeBi doi: 10.1145/3197517.3201376 ec_funded: 1 external_id: isi: - '000448185000120' file: - access_level: open_access checksum: dcdcc955a4c1c6d2599aeebb97d2e7b9 content_type: application/pdf creator: system date_created: 2018-12-12T10:18:14Z date_updated: 2020-07-14T12:45:59Z file_id: '5334' file_name: IST-2018-1024-v1+1_NanoStructColor-Auzinger-paper.pdf file_size: 10751684 relation: main_file - access_level: open_access checksum: cae52b3a8d5e97be84771cd61ea2f75e content_type: application/pdf creator: system date_created: 2018-12-12T10:18:15Z date_updated: 2020-07-14T12:45:59Z file_id: '5335' file_name: IST-2018-1024-v1+2_NanoStructColor-Auzinger-supplemental.pdf file_size: 20755095 relation: main_file - access_level: open_access checksum: 76dd90648f75779d3f64e324b6daaffe content_type: image/jpeg creator: system date_created: 2018-12-12T10:18:16Z date_updated: 2020-07-14T12:45:59Z file_id: '5336' file_name: IST-2018-1024-v1+3_NanoStructColor-Auzinger-image.jpg file_size: 2186944 relation: main_file - access_level: open_access checksum: c3a5b775a0ecdb20ccefb8d9646ec140 content_type: application/x-7z-compressed creator: system date_created: 2018-12-12T10:18:17Z date_updated: 2020-07-14T12:45:59Z file_id: '5337' file_name: IST-2018-1024-v1+4_NanoStructColor-Auzinger-blueprint.7z file_size: 2734352 relation: main_file - access_level: open_access checksum: dcdcc955a4c1c6d2599aeebb97d2e7b9 content_type: application/pdf creator: system date_created: 2018-12-12T10:18:18Z date_updated: 2020-07-14T12:45:59Z file_id: '5338' file_name: IST-2018-1024-v2+1_NanoStructColor-Auzinger-paper.pdf file_size: 10751684 relation: main_file - access_level: open_access checksum: 76dd90648f75779d3f64e324b6daaffe content_type: image/jpeg creator: system date_created: 2018-12-12T10:18:19Z date_updated: 2020-07-14T12:45:59Z file_id: '5339' file_name: IST-2018-1024-v2+3_NanoStructColor-Auzinger-image.jpg file_size: 2186944 relation: main_file - access_level: open_access checksum: c3a5b775a0ecdb20ccefb8d9646ec140 content_type: application/x-7z-compressed creator: system date_created: 2018-12-12T10:18:20Z date_updated: 2020-07-14T12:45:59Z file_id: '5340' file_name: IST-2018-1024-v2+4_NanoStructColor-Auzinger-blueprint.7z file_size: 2734352 relation: main_file - access_level: open_access checksum: 667e91b686db41e44d855a4fb2137402 content_type: application/pdf creator: system date_created: 2018-12-12T10:18:21Z date_updated: 2020-07-14T12:45:59Z file_id: '5341' file_name: IST-2018-1024-v2+5_NanoStructColor-Auzinger-supplemental.pdf file_size: 20755762 relation: main_file - access_level: open_access checksum: dcdcc955a4c1c6d2599aeebb97d2e7b9 content_type: application/pdf creator: system date_created: 2018-12-12T10:18:22Z date_updated: 2020-07-14T12:45:59Z file_id: '5342' file_name: IST-2018-1024-v3+1_NanoStructColor-Auzinger-paper.pdf file_size: 10751684 relation: main_file - access_level: open_access checksum: 76dd90648f75779d3f64e324b6daaffe content_type: image/jpeg creator: system date_created: 2018-12-12T10:18:22Z date_updated: 2020-07-14T12:45:59Z file_id: '5343' file_name: IST-2018-1024-v3+3_NanoStructColor-Auzinger-image.jpg file_size: 2186944 relation: main_file - access_level: open_access checksum: c3a5b775a0ecdb20ccefb8d9646ec140 content_type: application/x-7z-compressed creator: system date_created: 2018-12-12T10:18:23Z date_updated: 2020-07-14T12:45:59Z file_id: '5344' file_name: IST-2018-1024-v3+4_NanoStructColor-Auzinger-blueprint.7z file_size: 2734352 relation: main_file - access_level: open_access checksum: 667e91b686db41e44d855a4fb2137402 content_type: application/pdf creator: system date_created: 2018-12-12T10:18:24Z date_updated: 2020-07-14T12:45:59Z file_id: '5345' file_name: IST-2018-1024-v3+5_NanoStructColor-Auzinger-supplemental.pdf file_size: 20755762 relation: main_file - access_level: open_access checksum: 72dce35388fb1aa7953df4d9ae3d02f1 content_type: application/vnd.openxmlformats-officedocument.presentationml.presentation creator: system date_created: 2018-12-12T10:18:25Z date_updated: 2020-07-14T12:45:59Z file_id: '5346' file_name: IST-2018-1024-v3+6_NanoStructColor-Auzinger-presentation.pptx file_size: 69698068 relation: main_file file_date_updated: 2020-07-14T12:45:59Z has_accepted_license: '1' intvolume: ' 37' isi: 1 issue: '4' language: - iso: eng month: '08' oa: 1 oa_version: Submitted Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: ACM Transactions on Graphics publication_status: published publisher: ACM pubrep_id: '1028' quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/color-effects-from-transparent-3d-printed-nanostructures/ scopus_import: '1' status: public title: Computational design of nanostructural color for additive manufacturing type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 37 year: '2018' ... --- _id: '12' abstract: - lang: eng text: Molding is a popular mass production method, in which the initial expenses for the mold are offset by the low per-unit production cost. However, the physical fabrication constraints of the molding technique commonly restrict the shape of moldable objects. For a complex shape, a decomposition of the object into moldable parts is a common strategy to address these constraints, with plastic model kits being a popular and illustrative example. However, conducting such a decomposition requires considerable expertise, and it depends on the technical aspects of the fabrication technique, as well as aesthetic considerations. We present an interactive technique to create such decompositions for two-piece molding, in which each part of the object is cast between two rigid mold pieces. Given the surface description of an object, we decompose its thin-shell equivalent into moldable parts by first performing a coarse decomposition and then utilizing an active contour model for the boundaries between individual parts. Formulated as an optimization problem, the movement of the contours is guided by an energy reflecting fabrication constraints to ensure the moldability of each part. Simultaneously, the user is provided with editing capabilities to enforce aesthetic guidelines. Our interactive interface provides control of the contour positions by allowing, for example, the alignment of part boundaries with object features. Our technique enables a novel workflow, as it empowers novice users to explore the design space, and it generates fabrication-ready two-piece molds that can be used either for casting or industrial injection molding of free-form objects. article_number: '135' article_processing_charge: No author: - first_name: Kazutaka full_name: Nakashima, Kazutaka last_name: Nakashima - first_name: Thomas full_name: Auzinger, Thomas id: 4718F954-F248-11E8-B48F-1D18A9856A87 last_name: Auzinger orcid: 0000-0002-1546-3265 - first_name: Emmanuel full_name: Iarussi, Emmanuel id: 33F19F16-F248-11E8-B48F-1D18A9856A87 last_name: Iarussi - first_name: Ran full_name: Zhang, Ran id: 4DDBCEB0-F248-11E8-B48F-1D18A9856A87 last_name: Zhang orcid: 0000-0002-3808-281X - first_name: Takeo full_name: Igarashi, Takeo last_name: Igarashi - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 citation: ama: 'Nakashima K, Auzinger T, Iarussi E, Zhang R, Igarashi T, Bickel B. CoreCavity: Interactive shell decomposition for fabrication with two-piece rigid molds. ACM Transaction on Graphics. 2018;37(4). doi:10.1145/3197517.3201341' apa: 'Nakashima, K., Auzinger, T., Iarussi, E., Zhang, R., Igarashi, T., & Bickel, B. (2018). CoreCavity: Interactive shell decomposition for fabrication with two-piece rigid molds. ACM Transaction on Graphics. ACM. https://doi.org/10.1145/3197517.3201341' chicago: 'Nakashima, Kazutaka, Thomas Auzinger, Emmanuel Iarussi, Ran Zhang, Takeo Igarashi, and Bernd Bickel. “CoreCavity: Interactive Shell Decomposition for Fabrication with Two-Piece Rigid Molds.” ACM Transaction on Graphics. ACM, 2018. https://doi.org/10.1145/3197517.3201341.' ieee: 'K. Nakashima, T. Auzinger, E. Iarussi, R. Zhang, T. Igarashi, and B. Bickel, “CoreCavity: Interactive shell decomposition for fabrication with two-piece rigid molds,” ACM Transaction on Graphics, vol. 37, no. 4. ACM, 2018.' ista: 'Nakashima K, Auzinger T, Iarussi E, Zhang R, Igarashi T, Bickel B. 2018. CoreCavity: Interactive shell decomposition for fabrication with two-piece rigid molds. ACM Transaction on Graphics. 37(4), 135.' mla: 'Nakashima, Kazutaka, et al. “CoreCavity: Interactive Shell Decomposition for Fabrication with Two-Piece Rigid Molds.” ACM Transaction on Graphics, vol. 37, no. 4, 135, ACM, 2018, doi:10.1145/3197517.3201341.' short: K. Nakashima, T. Auzinger, E. Iarussi, R. Zhang, T. Igarashi, B. Bickel, ACM Transaction on Graphics 37 (2018). date_created: 2018-12-11T11:44:09Z date_published: 2018-08-04T00:00:00Z date_updated: 2023-09-11T12:48:09Z day: '04' ddc: - '004' - '516' - '670' department: - _id: BeBi doi: 10.1145/3197517.3201341 ec_funded: 1 external_id: isi: - '000448185000096' file: - access_level: open_access checksum: 6a5368bc86c4e1a9fcfe588fd1f14ee8 content_type: application/pdf creator: system date_created: 2018-12-12T10:18:38Z date_updated: 2020-07-14T12:44:38Z file_id: '5360' file_name: IST-2018-1037-v1+1_CoreCavity-AuthorVersion.pdf file_size: 104225664 relation: main_file - access_level: open_access checksum: 3861e693ba47c51f3ec7b7867d573a61 content_type: application/zip creator: system date_created: 2018-12-12T10:18:39Z date_updated: 2020-07-14T12:44:38Z file_id: '5361' file_name: IST-2018-1037-v1+2_CoreCavity-Supplemental.zip file_size: 377743553 relation: main_file - access_level: open_access checksum: 490040c685ed869536e2a18f5a906b94 content_type: video/vnd.objectvideo creator: system date_created: 2018-12-12T10:18:41Z date_updated: 2020-07-14T12:44:38Z file_id: '5362' file_name: IST-2018-1037-v1+3_CoreCavity-Video.mp4 file_size: 162634396 relation: main_file - access_level: open_access checksum: be7fc8b229adda727419b6504b3b9352 content_type: image/jpeg creator: system date_created: 2018-12-12T10:18:42Z date_updated: 2020-07-14T12:44:38Z file_id: '5363' file_name: IST-2018-1037-v1+4_CoreCavity-RepresentativeImage.jpg file_size: 527972 relation: main_file file_date_updated: 2020-07-14T12:44:38Z has_accepted_license: '1' intvolume: ' 37' isi: 1 issue: '4' language: - iso: eng month: '08' oa: 1 oa_version: Submitted Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' - _id: 2508E324-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '642841' name: Distributed 3D Object Design publication: ACM Transaction on Graphics publication_status: published publisher: ACM publist_id: '8044' pubrep_id: '1037' quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/interactive-software-tool-makes-complex-mold-design-simple/ scopus_import: '1' status: public title: 'CoreCavity: Interactive shell decomposition for fabrication with two-piece rigid molds' type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 37 year: '2018' ... --- _id: '398' abstract: - lang: eng text: 'Objective: To report long-term results after Pipeline Embolization Device (PED) implantation, characterize complex and standard aneurysms comprehensively, and introduce a modified flow disruption scale. Methods: We retrospectively reviewed a consecutive series of 40 patients harboring 59 aneurysms treated with 54 PEDs. Aneurysm complexity was assessed using our proposed classification. Immediate angiographic results were analyzed using previously published grading scales and our novel flow disruption scale. Results: According to our new definition, 46 (78%) aneurysms were classified as complex. Most PED interventions were performed in the paraophthalmic and cavernous internal carotid artery segments. Excellent neurologic outcome (modified Rankin Scale 0 and 1) was observed in 94% of patients. Our data showed low permanent procedure-related mortality (0%) and morbidity (3%) rates. Long-term angiographic follow-up showed complete occlusion in 81% and near-total obliteration in a further 14%. Complete obliteration after deployment of a single PED was achieved in all standard aneurysms with 1-year follow-up. Our new scale was an independent predictor of aneurysm occlusion in a multivariable analysis. All aneurysms with a high flow disruption grade showed complete occlusion at follow-up regardless of PED number or aneurysm complexity. Conclusions: Treatment with the PED should be recognized as a primary management strategy for a highly selected cohort with predominantly complex intracranial aneurysms. We further show that a priori assessment of aneurysm complexity and our new postinterventional angiographic flow disruption scale predict occlusion probability and may help to determine the adequate number of per-aneurysm devices.' article_processing_charge: No author: - first_name: Philippe full_name: Dodier, Philippe last_name: Dodier - first_name: Josa full_name: Frischer, Josa last_name: Frischer - first_name: Wei full_name: Wang, Wei last_name: Wang - first_name: Thomas full_name: Auzinger, Thomas id: 4718F954-F248-11E8-B48F-1D18A9856A87 last_name: Auzinger orcid: 0000-0002-1546-3265 - first_name: Ammar full_name: Mallouhi, Ammar last_name: Mallouhi - first_name: Wolfgang full_name: Serles, Wolfgang last_name: Serles - first_name: Andreas full_name: Gruber, Andreas last_name: Gruber - first_name: Engelbert full_name: Knosp, Engelbert last_name: Knosp - first_name: Gerhard full_name: Bavinzski, Gerhard last_name: Bavinzski citation: ama: Dodier P, Frischer J, Wang W, et al. Immediate flow disruption as a prognostic factor after flow diverter treatment long term experience with the pipeline embolization device. World Neurosurgery. 2018;13:e568-e578. doi:10.1016/j.wneu.2018.02.096 apa: Dodier, P., Frischer, J., Wang, W., Auzinger, T., Mallouhi, A., Serles, W., … Bavinzski, G. (2018). Immediate flow disruption as a prognostic factor after flow diverter treatment long term experience with the pipeline embolization device. World Neurosurgery. Elsevier. https://doi.org/10.1016/j.wneu.2018.02.096 chicago: Dodier, Philippe, Josa Frischer, Wei Wang, Thomas Auzinger, Ammar Mallouhi, Wolfgang Serles, Andreas Gruber, Engelbert Knosp, and Gerhard Bavinzski. “Immediate Flow Disruption as a Prognostic Factor after Flow Diverter Treatment Long Term Experience with the Pipeline Embolization Device.” World Neurosurgery. Elsevier, 2018. https://doi.org/10.1016/j.wneu.2018.02.096. ieee: P. Dodier et al., “Immediate flow disruption as a prognostic factor after flow diverter treatment long term experience with the pipeline embolization device,” World Neurosurgery, vol. 13. Elsevier, pp. e568–e578, 2018. ista: Dodier P, Frischer J, Wang W, Auzinger T, Mallouhi A, Serles W, Gruber A, Knosp E, Bavinzski G. 2018. Immediate flow disruption as a prognostic factor after flow diverter treatment long term experience with the pipeline embolization device. World Neurosurgery. 13, e568–e578. mla: Dodier, Philippe, et al. “Immediate Flow Disruption as a Prognostic Factor after Flow Diverter Treatment Long Term Experience with the Pipeline Embolization Device.” World Neurosurgery, vol. 13, Elsevier, 2018, pp. e568–78, doi:10.1016/j.wneu.2018.02.096. short: P. Dodier, J. Frischer, W. Wang, T. Auzinger, A. Mallouhi, W. Serles, A. Gruber, E. Knosp, G. Bavinzski, World Neurosurgery 13 (2018) e568–e578. date_created: 2018-12-11T11:46:15Z date_published: 2018-05-01T00:00:00Z date_updated: 2023-09-11T14:12:33Z day: '01' department: - _id: BeBi doi: 10.1016/j.wneu.2018.02.096 external_id: isi: - '000432942700070' intvolume: ' 13' isi: 1 language: - iso: eng month: '05' oa_version: None page: e568-e578 publication: World Neurosurgery publication_status: published publisher: Elsevier publist_id: '7431' quality_controlled: '1' scopus_import: '1' status: public title: Immediate flow disruption as a prognostic factor after flow diverter treatment long term experience with the pipeline embolization device type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 13 year: '2018' ... --- _id: '4' abstract: - lang: eng text: We present a data-driven technique to instantly predict how fluid flows around various three-dimensional objects. Such simulation is useful for computational fabrication and engineering, but is usually computationally expensive since it requires solving the Navier-Stokes equation for many time steps. To accelerate the process, we propose a machine learning framework which predicts aerodynamic forces and velocity and pressure fields given a threedimensional shape input. Handling detailed free-form three-dimensional shapes in a data-driven framework is challenging because machine learning approaches usually require a consistent parametrization of input and output. We present a novel PolyCube maps-based parametrization that can be computed for three-dimensional shapes at interactive rates. This allows us to efficiently learn the nonlinear response of the flow using a Gaussian process regression. We demonstrate the effectiveness of our approach for the interactive design and optimization of a car body. article_number: '89' article_processing_charge: No author: - first_name: Nobuyuki full_name: Umetani, Nobuyuki last_name: Umetani - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 citation: ama: Umetani N, Bickel B. Learning three-dimensional flow for interactive aerodynamic design. ACM Trans Graph. 2018;37(4). doi:10.1145/3197517.3201325 apa: Umetani, N., & Bickel, B. (2018). Learning three-dimensional flow for interactive aerodynamic design. ACM Trans. Graph. ACM. https://doi.org/10.1145/3197517.3201325 chicago: Umetani, Nobuyuki, and Bernd Bickel. “Learning Three-Dimensional Flow for Interactive Aerodynamic Design.” ACM Trans. Graph. ACM, 2018. https://doi.org/10.1145/3197517.3201325. ieee: N. Umetani and B. Bickel, “Learning three-dimensional flow for interactive aerodynamic design,” ACM Trans. Graph., vol. 37, no. 4. ACM, 2018. ista: Umetani N, Bickel B. 2018. Learning three-dimensional flow for interactive aerodynamic design. ACM Trans. Graph. 37(4), 89. mla: Umetani, Nobuyuki, and Bernd Bickel. “Learning Three-Dimensional Flow for Interactive Aerodynamic Design.” ACM Trans. Graph., vol. 37, no. 4, 89, ACM, 2018, doi:10.1145/3197517.3201325. short: N. Umetani, B. Bickel, ACM Trans. Graph. 37 (2018). date_created: 2018-12-11T11:44:06Z date_published: 2018-08-04T00:00:00Z date_updated: 2023-09-13T08:46:15Z day: '04' ddc: - '003' - '004' department: - _id: BeBi doi: 10.1145/3197517.3201325 ec_funded: 1 external_id: isi: - '000448185000050' file: - access_level: open_access checksum: 7a2243668f215821bc6aecad0320079a content_type: application/pdf creator: system date_created: 2018-12-12T10:16:28Z date_updated: 2020-07-14T12:46:22Z file_id: '5216' file_name: IST-2018-1049-v1+1_2018_sigg_Learning3DAerodynamics.pdf file_size: 22803163 relation: main_file file_date_updated: 2020-07-14T12:46:22Z has_accepted_license: '1' intvolume: ' 37' isi: 1 issue: '4' language: - iso: eng month: '08' oa: 1 oa_version: Submitted Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: ACM Trans. Graph. publication_status: published publisher: ACM publist_id: '8053' pubrep_id: '1049' quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/new-interactive-machine-learning-tool-makes-car-designs-more-aerodynamic/ scopus_import: '1' status: public title: Learning three-dimensional flow for interactive aerodynamic design type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 37 year: '2018' ... --- _id: '13' abstract: - lang: eng text: We propose a new method for fabricating digital objects through reusable silicone molds. Molds are generated by casting liquid silicone into custom 3D printed containers called metamolds. Metamolds automatically define the cuts that are needed to extract the cast object from the silicone mold. The shape of metamolds is designed through a novel segmentation technique, which takes into account both geometric and topological constraints involved in the process of mold casting. Our technique is simple, does not require changing the shape or topology of the input objects, and only requires off-the- shelf materials and technologies. We successfully tested our method on a set of challenging examples with complex shapes and rich geometric detail. © 2018 Association for Computing Machinery. article_number: '136' article_processing_charge: No author: - first_name: Thomas full_name: Alderighi, Thomas last_name: Alderighi - first_name: Luigi full_name: Malomo, Luigi last_name: Malomo - first_name: Daniela full_name: Giorgi, Daniela last_name: Giorgi - first_name: Nico full_name: Pietroni, Nico last_name: Pietroni - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Paolo full_name: Cignoni, Paolo last_name: Cignoni citation: ama: 'Alderighi T, Malomo L, Giorgi D, Pietroni N, Bickel B, Cignoni P. Metamolds: Computational design of silicone molds. ACM Trans Graph. 2018;37(4). doi:10.1145/3197517.3201381' apa: 'Alderighi, T., Malomo, L., Giorgi, D., Pietroni, N., Bickel, B., & Cignoni, P. (2018). Metamolds: Computational design of silicone molds. ACM Trans. Graph. ACM. https://doi.org/10.1145/3197517.3201381' chicago: 'Alderighi, Thomas, Luigi Malomo, Daniela Giorgi, Nico Pietroni, Bernd Bickel, and Paolo Cignoni. “Metamolds: Computational Design of Silicone Molds.” ACM Trans. Graph. ACM, 2018. https://doi.org/10.1145/3197517.3201381.' ieee: 'T. Alderighi, L. Malomo, D. Giorgi, N. Pietroni, B. Bickel, and P. Cignoni, “Metamolds: Computational design of silicone molds,” ACM Trans. Graph., vol. 37, no. 4. ACM, 2018.' ista: 'Alderighi T, Malomo L, Giorgi D, Pietroni N, Bickel B, Cignoni P. 2018. Metamolds: Computational design of silicone molds. ACM Trans. Graph. 37(4), 136.' mla: 'Alderighi, Thomas, et al. “Metamolds: Computational Design of Silicone Molds.” ACM Trans. Graph., vol. 37, no. 4, 136, ACM, 2018, doi:10.1145/3197517.3201381.' short: T. Alderighi, L. Malomo, D. Giorgi, N. Pietroni, B. Bickel, P. Cignoni, ACM Trans. Graph. 37 (2018). date_created: 2018-12-11T11:44:09Z date_published: 2018-08-04T00:00:00Z date_updated: 2023-09-13T08:56:07Z day: '04' ddc: - '004' department: - _id: BeBi doi: 10.1145/3197517.3201381 ec_funded: 1 external_id: isi: - '000448185000097' file: - access_level: open_access checksum: 61d46273dca4de626accef1d17a0aaad content_type: application/pdf creator: system date_created: 2018-12-12T10:18:52Z date_updated: 2020-07-14T12:44:43Z file_id: '5374' file_name: IST-2018-1038-v1+1_metamolds_authorversion.pdf file_size: 91939066 relation: main_file file_date_updated: 2020-07-14T12:44:43Z has_accepted_license: '1' intvolume: ' 37' isi: 1 issue: '4' language: - iso: eng month: '08' oa: 1 oa_version: Submitted Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: ACM Trans. Graph. publication_status: published publisher: ACM publist_id: '8043' pubrep_id: '1038' quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/metamolds-molding-a-mold/ scopus_import: '1' status: public title: 'Metamolds: Computational design of silicone molds' type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 37 year: '2018' ... --- _id: '5976' abstract: - lang: eng text: We propose FlexMaps, a novel framework for fabricating smooth shapes out of flat, flexible panels with tailored mechanical properties. We start by mapping the 3D surface onto a 2D domain as in traditional UV mapping to design a set of deformable flat panels called FlexMaps. For these panels, we design and obtain specific mechanical properties such that, once they are assembled, the static equilibrium configuration matches the desired 3D shape. FlexMaps can be fabricated from an almost rigid material, such as wood or plastic, and are made flexible in a controlled way by using computationally designed spiraling microstructures. article_number: '241' article_processing_charge: No article_type: original author: - first_name: Luigi full_name: Malomo, Luigi last_name: Malomo - first_name: Jesus full_name: Perez Rodriguez, Jesus id: 2DC83906-F248-11E8-B48F-1D18A9856A87 last_name: Perez Rodriguez - first_name: Emmanuel full_name: Iarussi, Emmanuel id: 33F19F16-F248-11E8-B48F-1D18A9856A87 last_name: Iarussi - first_name: Nico full_name: Pietroni, Nico last_name: Pietroni - first_name: Eder full_name: Miguel, Eder last_name: Miguel - first_name: Paolo full_name: Cignoni, Paolo last_name: Cignoni - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 citation: ama: 'Malomo L, Perez Rodriguez J, Iarussi E, et al. FlexMaps: Computational design of flat flexible shells for shaping 3D objects. ACM Transactions on Graphics. 2018;37(6). doi:10.1145/3272127.3275076' apa: 'Malomo, L., Perez Rodriguez, J., Iarussi, E., Pietroni, N., Miguel, E., Cignoni, P., & Bickel, B. (2018). FlexMaps: Computational design of flat flexible shells for shaping 3D objects. ACM Transactions on Graphics. Association for Computing Machinery (ACM). https://doi.org/10.1145/3272127.3275076' chicago: 'Malomo, Luigi, Jesus Perez Rodriguez, Emmanuel Iarussi, Nico Pietroni, Eder Miguel, Paolo Cignoni, and Bernd Bickel. “FlexMaps: Computational Design of Flat Flexible Shells for Shaping 3D Objects.” ACM Transactions on Graphics. Association for Computing Machinery (ACM), 2018. https://doi.org/10.1145/3272127.3275076.' ieee: 'L. Malomo et al., “FlexMaps: Computational design of flat flexible shells for shaping 3D objects,” ACM Transactions on Graphics, vol. 37, no. 6. Association for Computing Machinery (ACM), 2018.' ista: 'Malomo L, Perez Rodriguez J, Iarussi E, Pietroni N, Miguel E, Cignoni P, Bickel B. 2018. FlexMaps: Computational design of flat flexible shells for shaping 3D objects. ACM Transactions on Graphics. 37(6), 241.' mla: 'Malomo, Luigi, et al. “FlexMaps: Computational Design of Flat Flexible Shells for Shaping 3D Objects.” ACM Transactions on Graphics, vol. 37, no. 6, 241, Association for Computing Machinery (ACM), 2018, doi:10.1145/3272127.3275076.' short: L. Malomo, J. Perez Rodriguez, E. Iarussi, N. Pietroni, E. Miguel, P. Cignoni, B. Bickel, ACM Transactions on Graphics 37 (2018). date_created: 2019-02-13T13:12:53Z date_published: 2018-11-01T00:00:00Z date_updated: 2023-09-19T14:25:30Z day: '01' ddc: - '000' department: - _id: BeBi doi: 10.1145/3272127.3275076 ec_funded: 1 external_id: isi: - '000455953100064' file: - access_level: open_access checksum: d0529a41c78b37ab8840685579fb33b4 content_type: application/pdf creator: bbickel date_created: 2019-09-23T12:48:52Z date_updated: 2020-07-14T12:47:14Z file_id: '6901' file_name: flexmaps_author_version.pdf file_size: 100109811 relation: main_file file_date_updated: 2020-07-14T12:47:14Z has_accepted_license: '1' intvolume: ' 37' isi: 1 issue: '6' language: - iso: eng month: '11' oa: 1 oa_version: Published Version project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' - _id: 25082902-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '645599' name: Soft-bodied intelligence for Manipulation - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: ACM Transactions on Graphics publication_identifier: issn: - 0730-0301 publication_status: published publisher: Association for Computing Machinery (ACM) pubrep_id: '1068' quality_controlled: '1' scopus_import: '1' status: public title: 'FlexMaps: Computational design of flat flexible shells for shaping 3D objects' type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 37 year: '2018' ... --- _id: '6003' abstract: - lang: eng text: Digital fabrication devices are powerful tools for creating tangible reproductions of 3D digital models. Most available printing technologies aim at producing an accurate copy of a tridimensional shape. However, fabrication technologies can also be used to create a stylistic representation of a digital shape. We refer to this class of methods as ‘stylized fabrication methods’. These methods abstract geometric and physical features of a given shape to create an unconventional representation, to produce an optical illusion or to devise a particular interaction with the fabricated model. In this state‐of‐the‐art report, we classify and overview this broad and emerging class of approaches and also propose possible directions for future research. article_processing_charge: No author: - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Paolo full_name: Cignoni, Paolo last_name: Cignoni - first_name: Luigi full_name: Malomo, Luigi last_name: Malomo - first_name: Nico full_name: Pietroni, Nico last_name: Pietroni citation: ama: Bickel B, Cignoni P, Malomo L, Pietroni N. State of the art on stylized fabrication. Computer Graphics Forum. 2018;37(6):325-342. doi:10.1111/cgf.13327 apa: Bickel, B., Cignoni, P., Malomo, L., & Pietroni, N. (2018). State of the art on stylized fabrication. Computer Graphics Forum. Wiley. https://doi.org/10.1111/cgf.13327 chicago: Bickel, Bernd, Paolo Cignoni, Luigi Malomo, and Nico Pietroni. “State of the Art on Stylized Fabrication.” Computer Graphics Forum. Wiley, 2018. https://doi.org/10.1111/cgf.13327. ieee: B. Bickel, P. Cignoni, L. Malomo, and N. Pietroni, “State of the art on stylized fabrication,” Computer Graphics Forum, vol. 37, no. 6. Wiley, pp. 325–342, 2018. ista: Bickel B, Cignoni P, Malomo L, Pietroni N. 2018. State of the art on stylized fabrication. Computer Graphics Forum. 37(6), 325–342. mla: Bickel, Bernd, et al. “State of the Art on Stylized Fabrication.” Computer Graphics Forum, vol. 37, no. 6, Wiley, 2018, pp. 325–42, doi:10.1111/cgf.13327. short: B. Bickel, P. Cignoni, L. Malomo, N. Pietroni, Computer Graphics Forum 37 (2018) 325–342. date_created: 2019-02-14T13:52:25Z date_published: 2018-09-01T00:00:00Z date_updated: 2023-09-19T14:33:40Z day: '01' ddc: - '004' department: - _id: BeBi doi: 10.1111/cgf.13327 ec_funded: 1 external_id: isi: - '000437272800019' file: - access_level: open_access checksum: d2bbe5c658d8159fbe9016a4f5e82b19 content_type: application/pdf creator: kschuh date_created: 2019-02-14T14:09:28Z date_updated: 2020-07-14T12:47:15Z file_id: '6004' file_name: StylizedFabricationSTAR-Personal.pdf file_size: 6209349 relation: main_file file_date_updated: 2020-07-14T12:47:15Z has_accepted_license: '1' intvolume: ' 37' isi: 1 issue: '6' language: - iso: eng month: '09' oa: 1 oa_version: Submitted Version page: 325-342 project: - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication: Computer Graphics Forum publication_identifier: issn: - 0167-7055 publication_status: published publisher: Wiley pubrep_id: '1051' quality_controlled: '1' scopus_import: '1' status: public title: State of the art on stylized fabrication type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 37 year: '2018' ... --- _id: '6195' abstract: - lang: eng text: In the context of robotic manipulation and grasping, the shift from a view that is static (force closure of a single posture) and contact-deprived (only contact for force closure is allowed, everything else is obstacle) towards a view that is dynamic and contact-rich (soft manipulation) has led to an increased interest in soft hands. These hands can easily exploit environmental constraints and object surfaces without risk, and safely interact with humans, but present also some challenges. Designing them is difficult, as well as predicting, modelling, and “programming” their interactions with the objects and the environment. This paper tackles the problem of simulating them in a fast and effective way, leveraging on novel and existing simulation technologies. We present a triple-layered simulation framework where dynamic properties such as stiffness are determined from slow but accurate FEM simulation data once, and then condensed into a lumped parameter model that can be used to fast simulate soft fingers and soft hands. We apply our approach to the simulation of soft pneumatic fingers. article_number: '8461106' article_processing_charge: No author: - first_name: Maria full_name: Pozzi, Maria last_name: Pozzi - first_name: Eder full_name: Miguel Villalba, Eder id: 3FB91342-F248-11E8-B48F-1D18A9856A87 last_name: Miguel Villalba orcid: 0000-0001-5665-0430 - first_name: Raphael full_name: Deimel, Raphael last_name: Deimel - first_name: Monica full_name: Malvezzi, Monica last_name: Malvezzi - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Oliver full_name: Brock, Oliver last_name: Brock - first_name: Domenico full_name: Prattichizzo, Domenico last_name: Prattichizzo citation: ama: 'Pozzi M, Miguel Villalba E, Deimel R, et al. Efficient FEM-based simulation of soft robots modeled as kinematic chains. In: IEEE; 2018. doi:10.1109/icra.2018.8461106' apa: 'Pozzi, M., Miguel Villalba, E., Deimel, R., Malvezzi, M., Bickel, B., Brock, O., & Prattichizzo, D. (2018). Efficient FEM-based simulation of soft robots modeled as kinematic chains. Presented at the ICRA: International Conference on Robotics and Automation, Brisbane, Australia: IEEE. https://doi.org/10.1109/icra.2018.8461106' chicago: Pozzi, Maria, Eder Miguel Villalba, Raphael Deimel, Monica Malvezzi, Bernd Bickel, Oliver Brock, and Domenico Prattichizzo. “Efficient FEM-Based Simulation of Soft Robots Modeled as Kinematic Chains.” IEEE, 2018. https://doi.org/10.1109/icra.2018.8461106. ieee: 'M. Pozzi et al., “Efficient FEM-based simulation of soft robots modeled as kinematic chains,” presented at the ICRA: International Conference on Robotics and Automation, Brisbane, Australia, 2018.' ista: 'Pozzi M, Miguel Villalba E, Deimel R, Malvezzi M, Bickel B, Brock O, Prattichizzo D. 2018. Efficient FEM-based simulation of soft robots modeled as kinematic chains. ICRA: International Conference on Robotics and Automation, 8461106.' mla: Pozzi, Maria, et al. Efficient FEM-Based Simulation of Soft Robots Modeled as Kinematic Chains. 8461106, IEEE, 2018, doi:10.1109/icra.2018.8461106. short: M. Pozzi, E. Miguel Villalba, R. Deimel, M. Malvezzi, B. Bickel, O. Brock, D. Prattichizzo, in:, IEEE, 2018. conference: end_date: 2018-05-25 location: Brisbane, Australia name: 'ICRA: International Conference on Robotics and Automation' start_date: 2018-05-21 date_created: 2019-04-04T09:50:38Z date_published: 2018-09-10T00:00:00Z date_updated: 2023-09-19T14:49:03Z day: '10' department: - _id: BeBi doi: 10.1109/icra.2018.8461106 external_id: isi: - '000446394503031' isi: 1 language: - iso: eng month: '09' oa_version: None publication_identifier: isbn: - '9781538630815' publication_status: published publisher: IEEE quality_controlled: '1' scopus_import: '1' status: public title: Efficient FEM-based simulation of soft robots modeled as kinematic chains type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2018' ... --- _id: '486' abstract: - lang: eng text: Color texture reproduction in 3D printing commonly ignores volumetric light transport (cross-talk) between surface points on a 3D print. Such light diffusion leads to significant blur of details and color bleeding, and is particularly severe for highly translucent resin-based print materials. Given their widely varying scattering properties, this cross-talk between surface points strongly depends on the internal structure of the volume surrounding each surface point. Existing scattering-aware methods use simplified models for light diffusion, and often accept the visual blur as an immutable property of the print medium. In contrast, our work counteracts heterogeneous scattering to obtain the impression of a crisp albedo texture on top of the 3D print, by optimizing for a fully volumetric material distribution that preserves the target appearance. Our method employs an efficient numerical optimizer on top of a general Monte-Carlo simulation of heterogeneous scattering, supported by a practical calibration procedure to obtain scattering parameters from a given set of printer materials. Despite the inherent translucency of the medium, we reproduce detailed surface textures on 3D prints. We evaluate our system using a commercial, five-tone 3D print process and compare against the printer’s native color texturing mode, demonstrating that our method preserves high-frequency features well without having to compromise on color gamut. article_number: '241' article_processing_charge: No article_type: original author: - first_name: Oskar full_name: Elek, Oskar last_name: Elek - first_name: Denis full_name: Sumin, Denis last_name: Sumin - first_name: Ran full_name: Zhang, Ran id: 4DDBCEB0-F248-11E8-B48F-1D18A9856A87 last_name: Zhang orcid: 0000-0002-3808-281X - first_name: Tim full_name: Weyrich, Tim last_name: Weyrich - first_name: Karol full_name: Myszkowski, Karol last_name: Myszkowski - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Alexander full_name: Wilkie, Alexander last_name: Wilkie - first_name: Jaroslav full_name: Krivanek, Jaroslav last_name: Krivanek citation: ama: Elek O, Sumin D, Zhang R, et al. Scattering-aware texture reproduction for 3D printing. ACM Transactions on Graphics. 2017;36(6). doi:10.1145/3130800.3130890 apa: Elek, O., Sumin, D., Zhang, R., Weyrich, T., Myszkowski, K., Bickel, B., … Krivanek, J. (2017). Scattering-aware texture reproduction for 3D printing. ACM Transactions on Graphics. ACM. https://doi.org/10.1145/3130800.3130890 chicago: Elek, Oskar, Denis Sumin, Ran Zhang, Tim Weyrich, Karol Myszkowski, Bernd Bickel, Alexander Wilkie, and Jaroslav Krivanek. “Scattering-Aware Texture Reproduction for 3D Printing.” ACM Transactions on Graphics. ACM, 2017. https://doi.org/10.1145/3130800.3130890. ieee: O. Elek et al., “Scattering-aware texture reproduction for 3D printing,” ACM Transactions on Graphics, vol. 36, no. 6. ACM, 2017. ista: Elek O, Sumin D, Zhang R, Weyrich T, Myszkowski K, Bickel B, Wilkie A, Krivanek J. 2017. Scattering-aware texture reproduction for 3D printing. ACM Transactions on Graphics. 36(6), 241. mla: Elek, Oskar, et al. “Scattering-Aware Texture Reproduction for 3D Printing.” ACM Transactions on Graphics, vol. 36, no. 6, 241, ACM, 2017, doi:10.1145/3130800.3130890. short: O. Elek, D. Sumin, R. Zhang, T. Weyrich, K. Myszkowski, B. Bickel, A. Wilkie, J. Krivanek, ACM Transactions on Graphics 36 (2017). date_created: 2018-12-11T11:46:44Z date_published: 2017-11-20T00:00:00Z date_updated: 2023-09-07T13:11:15Z day: '20' ddc: - '003' - '000' - '005' department: - _id: BeBi doi: 10.1145/3130800.3130890 ec_funded: 1 file: - access_level: open_access checksum: 48386fa6956c3645fc89594dc898b147 content_type: application/pdf creator: system date_created: 2018-12-12T10:10:46Z date_updated: 2020-07-14T12:46:35Z file_id: '4836' file_name: IST-2018-1052-v1+1_ElekSumin2017SGA.pdf file_size: 107349827 relation: main_file - access_level: open_access checksum: 21c89c28fb8d70f6602f752bf997aa0f content_type: application/pdf creator: bbickel date_created: 2019-12-16T14:48:57Z date_updated: 2020-07-14T12:46:35Z file_id: '7189' file_name: ElekSumin2017SGA_reduced_file_size.pdf file_size: 4683145 relation: main_file file_date_updated: 2020-07-14T12:46:35Z has_accepted_license: '1' intvolume: ' 36' issue: '6' language: - iso: eng month: '11' oa: 1 oa_version: Submitted Version project: - _id: 2508E324-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '642841' name: Distributed 3D Object Design - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: ACM Transactions on Graphics publication_identifier: issn: - '07300301' publication_status: published publisher: ACM publist_id: '7334' pubrep_id: '1052' quality_controlled: '1' related_material: record: - id: '8386' relation: dissertation_contains status: public scopus_import: 1 status: public title: Scattering-aware texture reproduction for 3D printing type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 36 year: '2017' ... --- _id: '1002' abstract: - lang: eng text: " We present an interactive design system to create functional mechanical \ objects. Our computational approach allows novice users to retarget an existing mechanical template to a user-specified input shape. Our proposed representation for a mechanical template encodes a parameterized mechanism, mechanical constraints that ensure a physically valid configuration, spatial relationships of mechanical parts to the user-provided shape, and functional constraints that specify an intended functionality. We provide an intuitive interface and optimization-in-the-loop approach for finding a valid configuration of the mechanism and the shape to ensure that higher-level functional goals are met. Our algorithm interactively optimizes the mechanism while the user manipulates the placement of mechanical components and the shape. Our system allows users to efficiently explore various design choices and to synthesize customized mechanical objects that can be fabricated with rapid prototyping technologies. We demonstrate the efficacy of our approach by retargeting various mechanical templates to different shapes and fabricating the resulting functional mechanical objects.\r\n" alternative_title: - ACM Transactions on Graphics article_number: '81' article_processing_charge: No author: - first_name: Ran full_name: Zhang, Ran id: 4DDBCEB0-F248-11E8-B48F-1D18A9856A87 last_name: Zhang orcid: 0000-0002-3808-281X - first_name: Thomas full_name: Auzinger, Thomas id: 4718F954-F248-11E8-B48F-1D18A9856A87 last_name: Auzinger orcid: 0000-0002-1546-3265 - first_name: Duygu full_name: Ceylan, Duygu last_name: Ceylan - first_name: Wilmot full_name: Li, Wilmot last_name: Li - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 citation: ama: 'Zhang R, Auzinger T, Ceylan D, Li W, Bickel B. Functionality-aware retargeting of mechanisms to 3D shapes. In: Vol 36. ACM; 2017. doi:10.1145/3072959.3073710' apa: 'Zhang, R., Auzinger, T., Ceylan, D., Li, W., & Bickel, B. (2017). Functionality-aware retargeting of mechanisms to 3D shapes (Vol. 36). Presented at the SIGGRAPH: Computer Graphics and Interactive Techniques, Los Angeles, CA, United States : ACM. https://doi.org/10.1145/3072959.3073710' chicago: Zhang, Ran, Thomas Auzinger, Duygu Ceylan, Wilmot Li, and Bernd Bickel. “Functionality-Aware Retargeting of Mechanisms to 3D Shapes,” Vol. 36. ACM, 2017. https://doi.org/10.1145/3072959.3073710. ieee: 'R. Zhang, T. Auzinger, D. Ceylan, W. Li, and B. Bickel, “Functionality-aware retargeting of mechanisms to 3D shapes,” presented at the SIGGRAPH: Computer Graphics and Interactive Techniques, Los Angeles, CA, United States , 2017, vol. 36, no. 4.' ista: 'Zhang R, Auzinger T, Ceylan D, Li W, Bickel B. 2017. Functionality-aware retargeting of mechanisms to 3D shapes. SIGGRAPH: Computer Graphics and Interactive Techniques, ACM Transactions on Graphics, vol. 36, 81.' mla: Zhang, Ran, et al. Functionality-Aware Retargeting of Mechanisms to 3D Shapes. Vol. 36, no. 4, 81, ACM, 2017, doi:10.1145/3072959.3073710. short: R. Zhang, T. Auzinger, D. Ceylan, W. Li, B. Bickel, in:, ACM, 2017. conference: end_date: 2017-08-03 location: 'Los Angeles, CA, United States ' name: 'SIGGRAPH: Computer Graphics and Interactive Techniques' start_date: 2017-07-30 date_created: 2018-12-11T11:49:38Z date_published: 2017-06-01T00:00:00Z date_updated: 2023-09-22T09:49:31Z day: '01' ddc: - '003' - '004' department: - _id: BeBi doi: 10.1145/3072959.3073710 ec_funded: 1 external_id: isi: - '000406432100049' file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:09:05Z date_updated: 2018-12-12T10:09:05Z file_id: '4728' file_name: IST-2018-1050-v1+1_MechRet.pdf file_size: 25463895 relation: main_file file_date_updated: 2018-12-12T10:09:05Z has_accepted_license: '1' intvolume: ' 36' isi: 1 issue: '4' language: - iso: eng month: '06' oa: 1 oa_version: Submitted Version project: - _id: 2508E324-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '642841' name: Distributed 3D Object Design - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication_identifier: issn: - '07300301' publication_status: published publisher: ACM publist_id: '6396' pubrep_id: '1050' quality_controlled: '1' related_material: record: - id: '8386' relation: dissertation_contains status: public scopus_import: '1' status: public title: Functionality-aware retargeting of mechanisms to 3D shapes type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 36 year: '2017' ... --- _id: '1001' abstract: - lang: eng text: We present a computational approach for designing CurveUps, curvy shells that form from an initially flat state. They consist of small rigid tiles that are tightly held together by two pre-stretched elastic sheets attached to them. Our method allows the realization of smooth, doubly curved surfaces that can be fabricated as a flat piece. Once released, the restoring forces of the pre-stretched sheets support the object to take shape in 3D. CurveUps are structurally stable in their target configuration. The design process starts with a target surface. Our method generates a tile layout in 2D and optimizes the distribution, shape, and attachment areas of the tiles to obtain a configuration that is fabricable and in which the curved up state closely matches the target. Our approach is based on an efficient approximate model and a local optimization strategy for an otherwise intractable nonlinear optimization problem. We demonstrate the effectiveness of our approach for a wide range of shapes, all realized as physical prototypes. alternative_title: - ACM Transactions on Graphics article_number: '64' article_processing_charge: No author: - first_name: Ruslan full_name: Guseinov, Ruslan id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87 last_name: Guseinov orcid: 0000-0001-9819-5077 - first_name: Eder full_name: Miguel, Eder last_name: Miguel - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 citation: ama: 'Guseinov R, Miguel E, Bickel B. CurveUps: Shaping objects from flat plates with tension-actuated curvature. In: Vol 36. ACM; 2017. doi:10.1145/3072959.3073709' apa: 'Guseinov, R., Miguel, E., & Bickel, B. (2017). CurveUps: Shaping objects from flat plates with tension-actuated curvature (Vol. 36). Presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, Los Angeles, CA, United States: ACM. https://doi.org/10.1145/3072959.3073709' chicago: 'Guseinov, Ruslan, Eder Miguel, and Bernd Bickel. “CurveUps: Shaping Objects from Flat Plates with Tension-Actuated Curvature,” Vol. 36. ACM, 2017. https://doi.org/10.1145/3072959.3073709.' ieee: 'R. Guseinov, E. Miguel, and B. Bickel, “CurveUps: Shaping objects from flat plates with tension-actuated curvature,” presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, Los Angeles, CA, United States, 2017, vol. 36, no. 4.' ista: 'Guseinov R, Miguel E, Bickel B. 2017. CurveUps: Shaping objects from flat plates with tension-actuated curvature. SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, ACM Transactions on Graphics, vol. 36, 64.' mla: 'Guseinov, Ruslan, et al. CurveUps: Shaping Objects from Flat Plates with Tension-Actuated Curvature. Vol. 36, no. 4, 64, ACM, 2017, doi:10.1145/3072959.3073709.' short: R. Guseinov, E. Miguel, B. Bickel, in:, ACM, 2017. conference: end_date: 2017-08-25 location: Los Angeles, CA, United States name: 'SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques' start_date: 2017-08-19 date_created: 2018-12-11T11:49:38Z date_published: 2017-01-01T00:00:00Z date_updated: 2023-09-22T09:49:58Z day: '01' ddc: - '003' - '004' department: - _id: BeBi doi: 10.1145/3072959.3073709 ec_funded: 1 external_id: isi: - '000406432100032' file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:10:24Z date_updated: 2018-12-12T10:10:24Z file_id: '4811' file_name: IST-2018-1053-v1+1_CurveUp.pdf file_size: 36159696 relation: main_file file_date_updated: 2018-12-12T10:10:24Z has_accepted_license: '1' intvolume: ' 36' isi: 1 issue: '4' language: - iso: eng month: '01' oa: 1 oa_version: Submitted Version project: - _id: 25082902-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '645599' name: Soft-bodied intelligence for Manipulation - _id: 24F9549A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715767' name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling' publication_status: published publisher: ACM publist_id: '6397' pubrep_id: '1053' quality_controlled: '1' related_material: record: - id: '8366' relation: dissertation_contains status: public status: public title: 'CurveUps: Shaping objects from flat plates with tension-actuated curvature' type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 36 year: '2017' ... --- _id: '1097' abstract: - lang: eng text: We present an interactive system for computational design, optimization, and fabrication of multicopters. Our computational approach allows non-experts to design, explore, and evaluate a wide range of different multicopters. We provide users with an intuitive interface for assembling a multicopter from a collection of components (e.g., propellers, motors, and carbon fiber rods). Our algorithm interactively optimizes shape and controller parameters of the current design to ensure its proper operation. In addition, we allow incorporating a variety of other metrics (such as payload, battery usage, size, and cost) into the design process and exploring tradeoffs between them. We show the efficacy of our method and system by designing, optimizing, fabricating, and operating multicopters with complex geometries and propeller configurations. We also demonstrate the ability of our optimization algorithm to improve the multicopter performance under different metrics. acknowledgement: "We thank Nobuyuki Umetani for his insightful suggestions in our discussions. We thank Alan Schultz and his colleagues at NRL for building the hexacopter and for the valuable discussions. We thank Randall Davis, Boris Katz, and Howard Shrobe at MIT for their advice. We are grateful to Nick Bandiera for preprocessing mechanical parts and providing 3D printing technical support; Charles Blouin from RCBenchmark for dynamometer hardware support; Brian Saavedra for the composition UI; Yingzhe Yuan for data acquisition and video recording in the experiments; Michael Foshey and David Kim for their comments on the draft of the paper. \r\n\r\n\r\nThis work was partially supported by Air Force Research Laboratory’s sponsorship of Julia: A Fresh Approach to Technical Computing and Data Processing (Sponsor Award ID FA8750-15-2- 0272, MIT Award ID 024831-00003), and NSF Expedition project (Sponsor Award ID CCF-1138967, MIT Award ID 020610-00002). The views expressed herein are not endorsed by the sponsors. This project has also received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No 645599. " alternative_title: - ACM Transactions on Graphics article_number: '227' author: - first_name: Tao full_name: Du, Tao last_name: Du - first_name: Adriana full_name: Schulz, Adriana last_name: Schulz - first_name: Bo full_name: Zhu, Bo last_name: Zhu - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Wojciech full_name: Matusik, Wojciech last_name: Matusik citation: ama: 'Du T, Schulz A, Zhu B, Bickel B, Matusik W. Computational multicopter design. In: Vol 35. ACM; 2016. doi:10.1145/2980179.2982427' apa: 'Du, T., Schulz, A., Zhu, B., Bickel, B., & Matusik, W. (2016). Computational multicopter design (Vol. 35). Presented at the SIGGRAPH Asia: Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia, Macao, China: ACM. https://doi.org/10.1145/2980179.2982427' chicago: Du, Tao, Adriana Schulz, Bo Zhu, Bernd Bickel, and Wojciech Matusik. “Computational Multicopter Design,” Vol. 35. ACM, 2016. https://doi.org/10.1145/2980179.2982427. ieee: 'T. Du, A. Schulz, B. Zhu, B. Bickel, and W. Matusik, “Computational multicopter design,” presented at the SIGGRAPH Asia: Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia, Macao, China, 2016, vol. 35, no. 6.' ista: 'Du T, Schulz A, Zhu B, Bickel B, Matusik W. 2016. Computational multicopter design. SIGGRAPH Asia: Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia, ACM Transactions on Graphics, vol. 35, 227.' mla: Du, Tao, et al. Computational Multicopter Design. Vol. 35, no. 6, 227, ACM, 2016, doi:10.1145/2980179.2982427. short: T. Du, A. Schulz, B. Zhu, B. Bickel, W. Matusik, in:, ACM, 2016. conference: end_date: 2016-12-08 location: Macao, China name: 'SIGGRAPH Asia: Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia' start_date: 2016-12-05 date_created: 2018-12-11T11:50:07Z date_published: 2016-11-01T00:00:00Z date_updated: 2021-01-12T06:48:15Z day: '01' ddc: - '006' department: - _id: BeBi doi: 10.1145/2980179.2982427 ec_funded: 1 file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:17:42Z date_updated: 2018-12-12T10:17:42Z file_id: '5298' file_name: IST-2017-759-v1+1_copter.pdf file_size: 33114420 relation: main_file file_date_updated: 2018-12-12T10:17:42Z has_accepted_license: '1' intvolume: ' 35' issue: '6' language: - iso: eng month: '11' oa: 1 oa_version: Submitted Version project: - _id: 25082902-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '645599' name: Soft-bodied intelligence for Manipulation publication_status: published publisher: ACM publist_id: '6278' pubrep_id: '759' quality_controlled: '1' scopus_import: 1 status: public title: Computational multicopter design type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 35 year: '2016' ... --- _id: '1099' abstract: - lang: eng text: We present FlexMolds, a novel computational approach to automatically design flexible, reusable molds that, once 3D printed, allow us to physically fabricate, by means of liquid casting, multiple copies of complex shapes with rich surface details and complex topology. The approach to design such flexible molds is based on a greedy bottom-up search of possible cuts over an object, evaluating for each possible cut the feasibility of the resulting mold. We use a dynamic simulation approach to evaluate candidate molds, providing a heuristic to generate forces that are able to open, detach, and remove a complex mold from the object it surrounds. We have tested the approach with a number of objects with nontrivial shapes and topologies. acknowledgement: "The armadillo, bunny and dragon models are courtesy of the Stanford \ 3D Scanning Repository. The bimba, fertility and elephant models are courtesy of the AIM@SHAPE Shape Repository. \r\nThis project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant \ agreement\r\nNo. 645599." alternative_title: - ACM Transactions on Graphics article_number: '223' author: - first_name: Luigi full_name: Malomo, Luigi last_name: Malomo - first_name: Nico full_name: Pietroni, Nico last_name: Pietroni - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Paolo full_name: Cignoni, Paolo last_name: Cignoni citation: ama: 'Malomo L, Pietroni N, Bickel B, Cignoni P. FlexMolds: Automatic design of flexible shells for molding. In: Vol 35. ACM; 2016. doi:10.1145/2980179.2982397' apa: 'Malomo, L., Pietroni, N., Bickel, B., & Cignoni, P. (2016). FlexMolds: Automatic design of flexible shells for molding (Vol. 35). Presented at the SIGGRAPH Asia: Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia, Macao, China: ACM. https://doi.org/10.1145/2980179.2982397' chicago: 'Malomo, Luigi, Nico Pietroni, Bernd Bickel, and Paolo Cignoni. “FlexMolds: Automatic Design of Flexible Shells for Molding,” Vol. 35. ACM, 2016. https://doi.org/10.1145/2980179.2982397.' ieee: 'L. Malomo, N. Pietroni, B. Bickel, and P. Cignoni, “FlexMolds: Automatic design of flexible shells for molding,” presented at the SIGGRAPH Asia: Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia, Macao, China, 2016, vol. 35, no. 6.' ista: 'Malomo L, Pietroni N, Bickel B, Cignoni P. 2016. FlexMolds: Automatic design of flexible shells for molding. SIGGRAPH Asia: Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia, ACM Transactions on Graphics, vol. 35, 223.' mla: 'Malomo, Luigi, et al. FlexMolds: Automatic Design of Flexible Shells for Molding. Vol. 35, no. 6, 223, ACM, 2016, doi:10.1145/2980179.2982397.' short: L. Malomo, N. Pietroni, B. Bickel, P. Cignoni, in:, ACM, 2016. conference: end_date: 2016-12-08 location: Macao, China name: 'SIGGRAPH Asia: Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia' start_date: 2016-12-05 date_created: 2018-12-11T11:50:08Z date_published: 2016-11-01T00:00:00Z date_updated: 2021-01-12T06:48:16Z day: '01' ddc: - '000' - '005' department: - _id: BeBi doi: 10.1145/2980179.2982397 ec_funded: 1 file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:12:01Z date_updated: 2018-12-12T10:12:01Z file_id: '4918' file_name: IST-2017-760-v1+1_flexmolds.pdf file_size: 11122029 relation: main_file file_date_updated: 2018-12-12T10:12:01Z has_accepted_license: '1' intvolume: ' 35' issue: '6' language: - iso: eng month: '11' oa: 1 oa_version: Submitted Version project: - _id: 25082902-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '645599' name: Soft-bodied intelligence for Manipulation publication_status: published publisher: ACM publist_id: '6276' pubrep_id: '760' quality_controlled: '1' scopus_import: 1 status: public title: 'FlexMolds: Automatic design of flexible shells for molding' type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 35 year: '2016' ... --- _id: '1319' abstract: - lang: eng text: We present a novel optimization-based algorithm for the design and fabrication of customized, deformable input devices, capable of continuously sensing their deformation. We propose to embed piezoresistive sensing elements into flexible 3D printed objects. These sensing elements are then utilized to recover rich and natural user interactions at runtime. Designing such objects is a challenging and hard problem if attempted manually for all but the simplest geometries and deformations. Our method simultaneously optimizes the internal routing of the sensing elements and computes a mapping from low-level sensor readings to user-specified outputs in order to minimize reconstruction error. We demonstrate the power and flexibility of the approach by designing and fabricating a set of flexible input devices. Our results indicate that the optimization-based design greatly outperforms manual routings in terms of reconstruction accuracy and thus interaction fidelity. acknowledgement: "We thank Damian Karrer, Rocco Ghielmini and Jemin\r\nHwangbo for their help in our initial explorations. We would\r\nlike to thank Christian Schumacher for creating the video and\r\nC\r\n ́\r\necile Edwards-Rietmann for providing the voiceover. Mau-\r\nrizio Nitti helped us in designing our 3D characters. We thank\r\nChiara Daraio for insightful discussions on material proper-\r\nties and 3D printing. We also thank the CHI reviewers for\r\ntheir feedback and guidance. Fabrizio Pece was supported by\r\nan ETH/Marie Curie fellowship (FEL-3314-1)." author: - first_name: Moritz full_name: Bächer, Moritz last_name: Bächer - first_name: Benjamin full_name: Hepp, Benjamin last_name: Hepp - first_name: Fabrizio full_name: Pece, Fabrizio last_name: Pece - first_name: Paul full_name: Kry, Paul last_name: Kry - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Bernhard full_name: Thomaszewski, Bernhard last_name: Thomaszewski - first_name: Otmar full_name: Hilliges, Otmar last_name: Hilliges citation: ama: 'Bächer M, Hepp B, Pece F, et al. DefSense: computational design of customized deformable input devices. In: ACM; 2016:3806-3816. doi:10.1145/2858036.2858354' apa: 'Bächer, M., Hepp, B., Pece, F., Kry, P., Bickel, B., Thomaszewski, B., & Hilliges, O. (2016). DefSense: computational design of customized deformable input devices (pp. 3806–3816). Presented at the CHI: Conference on Human Factors in Computing Systems, San Jose, California, USA: ACM. https://doi.org/10.1145/2858036.2858354' chicago: 'Bächer, Moritz, Benjamin Hepp, Fabrizio Pece, Paul Kry, Bernd Bickel, Bernhard Thomaszewski, and Otmar Hilliges. “DefSense: Computational Design of Customized Deformable Input Devices,” 3806–16. ACM, 2016. https://doi.org/10.1145/2858036.2858354.' ieee: 'M. Bächer et al., “DefSense: computational design of customized deformable input devices,” presented at the CHI: Conference on Human Factors in Computing Systems, San Jose, California, USA, 2016, pp. 3806–3816.' ista: 'Bächer M, Hepp B, Pece F, Kry P, Bickel B, Thomaszewski B, Hilliges O. 2016. DefSense: computational design of customized deformable input devices. CHI: Conference on Human Factors in Computing Systems, 3806–3816.' mla: 'Bächer, Moritz, et al. DefSense: Computational Design of Customized Deformable Input Devices. ACM, 2016, pp. 3806–16, doi:10.1145/2858036.2858354.' short: M. Bächer, B. Hepp, F. Pece, P. Kry, B. Bickel, B. Thomaszewski, O. Hilliges, in:, ACM, 2016, pp. 3806–3816. conference: end_date: 2016-05-12 location: San Jose, California, USA name: 'CHI: Conference on Human Factors in Computing Systems' start_date: 2016-05-07 date_created: 2018-12-11T11:51:21Z date_published: 2016-05-07T00:00:00Z date_updated: 2021-01-12T06:49:51Z day: '07' department: - _id: BeBi doi: 10.1145/2858036.2858354 language: - iso: eng month: '05' oa_version: None page: 3806 - 3816 publication_status: published publisher: ACM publist_id: '5951' quality_controlled: '1' scopus_import: 1 status: public title: 'DefSense: computational design of customized deformable input devices' type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 year: '2016' ... --- _id: '1364' abstract: - lang: eng text: We present a computational method for designing wire sculptures consisting of interlocking wires. Our method allows the computation of aesthetically pleasing structures that are structurally stable, efficiently fabricatable with a 2D wire bending machine, and assemblable without the need of additional connectors. Starting from a set of planar contours provided by the user, our method automatically tests for the feasibility of a design, determines a discrete ordering of wires at intersection points, and optimizes for the rest shape of the individual wires to maximize structural stability under frictional contact. In addition to their application to art, wire sculptures present an extremely efficient and fast alternative for low-fidelity rapid prototyping because manufacturing time and required material linearly scales with the physical size of objects. We demonstrate the effectiveness of our approach on a varied set of examples, all of which we fabricated. acknowledgement: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 645599. alternative_title: - ACM Transactions on Graphics article_number: '86' author: - first_name: Eder full_name: Miguel Villalba, Eder id: 3FB91342-F248-11E8-B48F-1D18A9856A87 last_name: Miguel Villalba - first_name: Mathias full_name: Lepoutre, Mathias last_name: Lepoutre - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 citation: ama: 'Miguel Villalba E, Lepoutre M, Bickel B. Computational design of stable planar-rod structures. In: Vol 35. ACM; 2016. doi:10.1145/2897824.2925978' apa: 'Miguel Villalba, E., Lepoutre, M., & Bickel, B. (2016). Computational design of stable planar-rod structures (Vol. 35). Presented at the ACM SIGGRAPH, Anaheim, CA, USA: ACM. https://doi.org/10.1145/2897824.2925978' chicago: Miguel Villalba, Eder, Mathias Lepoutre, and Bernd Bickel. “Computational Design of Stable Planar-Rod Structures,” Vol. 35. ACM, 2016. https://doi.org/10.1145/2897824.2925978. ieee: E. Miguel Villalba, M. Lepoutre, and B. Bickel, “Computational design of stable planar-rod structures,” presented at the ACM SIGGRAPH, Anaheim, CA, USA, 2016, vol. 35, no. 4. ista: Miguel Villalba E, Lepoutre M, Bickel B. 2016. Computational design of stable planar-rod structures. ACM SIGGRAPH, ACM Transactions on Graphics, vol. 35, 86. mla: Miguel Villalba, Eder, et al. Computational Design of Stable Planar-Rod Structures. Vol. 35, no. 4, 86, ACM, 2016, doi:10.1145/2897824.2925978. short: E. Miguel Villalba, M. Lepoutre, B. Bickel, in:, ACM, 2016. conference: end_date: 2016-07-28 location: Anaheim, CA, USA name: ACM SIGGRAPH start_date: 2016-07-24 date_created: 2018-12-11T11:51:36Z date_published: 2016-07-01T00:00:00Z date_updated: 2021-01-12T06:50:10Z day: '01' ddc: - '006' department: - _id: BeBi doi: 10.1145/2897824.2925978 ec_funded: 1 file: - access_level: open_access checksum: d00c2664a43d945df8876ea0193734e3 content_type: application/pdf creator: system date_created: 2018-12-12T10:11:01Z date_updated: 2020-07-14T12:44:47Z file_id: '4853' file_name: IST-2017-763-v1+1_wirebending.pdf file_size: 44766392 relation: main_file file_date_updated: 2020-07-14T12:44:47Z has_accepted_license: '1' intvolume: ' 35' issue: '4' language: - iso: eng month: '07' oa: 1 oa_version: Preprint project: - _id: 25082902-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '645599' name: Soft-bodied intelligence for Manipulation publication_status: published publisher: ACM publist_id: '5878' pubrep_id: '763' quality_controlled: '1' scopus_import: 1 status: public title: Computational design of stable planar-rod structures type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 35 year: '2016' ... --- _id: '1414' abstract: - lang: eng text: In this paper, we present a method to model hyperelasticity that is well suited for representing the nonlinearity of real-world objects, as well as for estimating it from deformation examples. Previous approaches suffer several limitations, such as lack of integrability of elastic forces, failure to enforce energy convexity, lack of robustness of parameter estimation, or difficulty to model cross-modal effects. Our method avoids these problems by relying on a general energy-based definition of elastic properties. The accuracy of the resulting elastic model is maximized by defining an additive model of separable energy terms, which allow progressive parameter estimation. In addition, our method supports efficient modeling of extreme nonlinearities thanks to energy-limiting constraints. We combine our energy-based model with an optimization method to estimate model parameters from force-deformation examples, and we show successful modeling of diverse deformable objects, including cloth, human finger skin, and internal human anatomy in a medical imaging application. acknowledgement: This work was funded in part by grants from the Spanish Ministry of Economy (TIN2012-35840), the European Research Council (ERC Starting Grant no. 280135 Animetrics), and the EU FP7 (project no. 601165 WEARHAP). author: - first_name: Eder full_name: Miguel Villalba, Eder id: 3FB91342-F248-11E8-B48F-1D18A9856A87 last_name: Miguel Villalba - first_name: David full_name: Miraut, David last_name: Miraut - first_name: Miguel full_name: Otaduy, Miguel last_name: Otaduy citation: ama: Miguel Villalba E, Miraut D, Otaduy M. Modeling and estimation of energy-based hyperelastic objects. Computer Graphics Forum. 2016;35(2):385-396. doi:10.1111/cgf.12840 apa: Miguel Villalba, E., Miraut, D., & Otaduy, M. (2016). Modeling and estimation of energy-based hyperelastic objects. Computer Graphics Forum. Wiley-Blackwell. https://doi.org/10.1111/cgf.12840 chicago: Miguel Villalba, Eder, David Miraut, and Miguel Otaduy. “Modeling and Estimation of Energy-Based Hyperelastic Objects.” Computer Graphics Forum. Wiley-Blackwell, 2016. https://doi.org/10.1111/cgf.12840. ieee: E. Miguel Villalba, D. Miraut, and M. Otaduy, “Modeling and estimation of energy-based hyperelastic objects,” Computer Graphics Forum, vol. 35, no. 2. Wiley-Blackwell, pp. 385–396, 2016. ista: Miguel Villalba E, Miraut D, Otaduy M. 2016. Modeling and estimation of energy-based hyperelastic objects. Computer Graphics Forum. 35(2), 385–396. mla: Miguel Villalba, Eder, et al. “Modeling and Estimation of Energy-Based Hyperelastic Objects.” Computer Graphics Forum, vol. 35, no. 2, Wiley-Blackwell, 2016, pp. 385–96, doi:10.1111/cgf.12840. short: E. Miguel Villalba, D. Miraut, M. Otaduy, Computer Graphics Forum 35 (2016) 385–396. date_created: 2018-12-11T11:51:53Z date_published: 2016-05-01T00:00:00Z date_updated: 2021-01-12T06:50:35Z day: '01' department: - _id: BeBi doi: 10.1111/cgf.12840 intvolume: ' 35' issue: '2' language: - iso: eng month: '05' oa_version: None page: 385 - 396 publication: Computer Graphics Forum publication_status: published publisher: Wiley-Blackwell publist_id: '5792' quality_controlled: '1' scopus_import: 1 status: public title: Modeling and estimation of energy-based hyperelastic objects type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 35 year: '2016' ... --- _id: '1446' abstract: - lang: eng text: The accuracy of interdisciplinarity measurements is directly related to the quality of the underlying bibliographic data. Existing indicators of interdisciplinarity are not capable of reflecting the inaccuracies introduced by incorrect and incomplete records because correct and complete bibliographic data can rarely be obtained. This is the case for the Rao–Stirling index, which cannot handle references that are not categorized into disciplinary fields. We introduce a method that addresses this problem. It extends the Rao–Stirling index to acknowledge missing data by calculating its interval of uncertainty using computational optimization. The evaluation of our method indicates that the uncertainty interval is not only useful for estimating the inaccuracy of interdisciplinarity measurements, but it also delivers slightly more accurate aggregated interdisciplinarity measurements than the Rao–Stirling index. article_processing_charge: No author: - first_name: Maria full_name: Calatrava Moreno, Maria last_name: Calatrava Moreno - first_name: Thomas full_name: Auzinger, Thomas id: 4718F954-F248-11E8-B48F-1D18A9856A87 last_name: Auzinger orcid: 0000-0002-1546-3265 - first_name: Hannes full_name: Werthner, Hannes last_name: Werthner citation: ama: Calatrava Moreno M, Auzinger T, Werthner H. On the uncertainty of interdisciplinarity measurements due to incomplete bibliographic data. Scientometrics. 2016;107(1):213-232. doi:10.1007/s11192-016-1842-4 apa: Calatrava Moreno, M., Auzinger, T., & Werthner, H. (2016). On the uncertainty of interdisciplinarity measurements due to incomplete bibliographic data. Scientometrics. Springer. https://doi.org/10.1007/s11192-016-1842-4 chicago: Calatrava Moreno, Maria, Thomas Auzinger, and Hannes Werthner. “On the Uncertainty of Interdisciplinarity Measurements Due to Incomplete Bibliographic Data.” Scientometrics. Springer, 2016. https://doi.org/10.1007/s11192-016-1842-4. ieee: M. Calatrava Moreno, T. Auzinger, and H. Werthner, “On the uncertainty of interdisciplinarity measurements due to incomplete bibliographic data,” Scientometrics, vol. 107, no. 1. Springer, pp. 213–232, 2016. ista: Calatrava Moreno M, Auzinger T, Werthner H. 2016. On the uncertainty of interdisciplinarity measurements due to incomplete bibliographic data. Scientometrics. 107(1), 213–232. mla: Calatrava Moreno, Maria, et al. “On the Uncertainty of Interdisciplinarity Measurements Due to Incomplete Bibliographic Data.” Scientometrics, vol. 107, no. 1, Springer, 2016, pp. 213–32, doi:10.1007/s11192-016-1842-4. short: M. Calatrava Moreno, T. Auzinger, H. Werthner, Scientometrics 107 (2016) 213–232. date_created: 2018-12-11T11:52:04Z date_published: 2016-04-01T00:00:00Z date_updated: 2021-11-16T08:29:11Z day: '01' ddc: - '000' department: - _id: BeBi doi: 10.1007/s11192-016-1842-4 file: - access_level: open_access checksum: 32d46268588b87d9b686492018e6a2b2 content_type: application/pdf creator: system date_created: 2018-12-12T10:10:56Z date_updated: 2020-07-14T12:44:55Z file_id: '4848' file_name: IST-2016-530-v1+1_s11192-016-1842-4.pdf file_size: 806035 relation: main_file file_date_updated: 2020-07-14T12:44:55Z has_accepted_license: '1' intvolume: ' 107' issue: '1' language: - iso: eng month: '04' oa: 1 oa_version: Published Version page: 213 - 232 publication: Scientometrics publication_status: published publisher: Springer publist_id: '5750' pubrep_id: '530' quality_controlled: '1' related_material: link: - relation: erratum url: https://doi.org/10.1007/s11192-016-1902-9 scopus_import: '1' status: public title: On the uncertainty of interdisciplinarity measurements due to incomplete bibliographic data tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 107 year: '2016' ... --- _id: '1520' abstract: - lang: eng text: Creating mechanical automata that can walk in stable and pleasing manners is a challenging task that requires both skill and expertise. We propose to use computational design to offset the technical difficulties of this process. A simple drag-and-drop interface allows casual users to create personalized walking toys from a library of pre-defined template mechanisms. Provided with this input, our method leverages physical simulation and evolutionary optimization to refine the mechanical designs such that the resulting toys are able to walk. The optimization process is guided by an intuitive set of objectives that measure the quality of the walking motions. We demonstrate our approach on a set of simulated mechanical toys with different numbers of legs and various distinct gaits. Two fabricated prototypes showcase the feasibility of our designs. author: - first_name: Gaurav full_name: Bharaj, Gaurav last_name: Bharaj - first_name: Stelian full_name: Coros, Stelian last_name: Coros - first_name: Bernhard full_name: Thomaszewski, Bernhard last_name: Thomaszewski - first_name: James full_name: Tompkin, James last_name: Tompkin - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Hanspeter full_name: Pfister, Hanspeter last_name: Pfister citation: ama: 'Bharaj G, Coros S, Thomaszewski B, Tompkin J, Bickel B, Pfister H. Computational design of walking automata. In: ACM; 2015:93-100. doi:10.1145/2786784.2786803' apa: 'Bharaj, G., Coros, S., Thomaszewski, B., Tompkin, J., Bickel, B., & Pfister, H. (2015). Computational design of walking automata (pp. 93–100). Presented at the SCA: ACM SIGGRAPH/Eurographics Symposium on Computer animation, Los Angeles, CA, United States: ACM. https://doi.org/10.1145/2786784.2786803' chicago: Bharaj, Gaurav, Stelian Coros, Bernhard Thomaszewski, James Tompkin, Bernd Bickel, and Hanspeter Pfister. “Computational Design of Walking Automata,” 93–100. ACM, 2015. https://doi.org/10.1145/2786784.2786803. ieee: 'G. Bharaj, S. Coros, B. Thomaszewski, J. Tompkin, B. Bickel, and H. Pfister, “Computational design of walking automata,” presented at the SCA: ACM SIGGRAPH/Eurographics Symposium on Computer animation, Los Angeles, CA, United States, 2015, pp. 93–100.' ista: 'Bharaj G, Coros S, Thomaszewski B, Tompkin J, Bickel B, Pfister H. 2015. Computational design of walking automata. SCA: ACM SIGGRAPH/Eurographics Symposium on Computer animation, 93–100.' mla: Bharaj, Gaurav, et al. Computational Design of Walking Automata. ACM, 2015, pp. 93–100, doi:10.1145/2786784.2786803. short: G. Bharaj, S. Coros, B. Thomaszewski, J. Tompkin, B. Bickel, H. Pfister, in:, ACM, 2015, pp. 93–100. conference: end_date: 2015-08-09 location: Los Angeles, CA, United States name: 'SCA: ACM SIGGRAPH/Eurographics Symposium on Computer animation' start_date: 2015-08-07 date_created: 2018-12-11T11:52:30Z date_published: 2015-08-01T00:00:00Z date_updated: 2021-01-12T06:51:21Z day: '01' department: - _id: BeBi doi: 10.1145/2786784.2786803 language: - iso: eng month: '08' oa_version: None page: 93 - 100 publication_identifier: isbn: - 978-1-4503-3496-9 publication_status: published publisher: ACM publist_id: '5655' quality_controlled: '1' scopus_import: 1 status: public title: Computational design of walking automata type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2015' ... --- _id: '1625' abstract: - lang: eng text: In recent years we have seen numerous improvements on 3D scanning and tracking of human faces, greatly advancing the creation of digital doubles for film and video games. However, despite the high-resolution quality of the reconstruction approaches available, current methods are unable to capture one of the most important regions of the face - the eye region. In this work we present the first method for detailed spatio-temporal reconstruction of eyelids. Tracking and reconstructing eyelids is extremely challenging, as this region exhibits very complex and unique skin deformation where skin is folded under while opening the eye. Furthermore, eyelids are often only partially visible and obstructed due to selfocclusion and eyelashes. Our approach is to combine a geometric deformation model with image data, leveraging multi-view stereo, optical flow, contour tracking and wrinkle detection from local skin appearance. Our deformation model serves as a prior that enables reconstruction of eyelids even under strong self-occlusions caused by rolling and folding skin as the eye opens and closes. The output is a person-specific, time-varying eyelid reconstruction with anatomically plausible deformations. Our high-resolution detailed eyelids couple naturally with current facial performance capture approaches. As a result, our method can largely increase the fidelity of facial capture and the creation of digital doubles. article_number: '44' author: - first_name: Amit full_name: Bermano, Amit last_name: Bermano - first_name: Thabo full_name: Beeler, Thabo last_name: Beeler - first_name: Yeara full_name: Kozlov, Yeara last_name: Kozlov - first_name: Derek full_name: Bradley, Derek last_name: Bradley - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Markus full_name: Gross, Markus last_name: Gross citation: ama: 'Bermano A, Beeler T, Kozlov Y, Bradley D, Bickel B, Gross M. Detailed spatio-temporal reconstruction of eyelids. In: Vol 34. ACM; 2015. doi:10.1145/2766924' apa: 'Bermano, A., Beeler, T., Kozlov, Y., Bradley, D., Bickel, B., & Gross, M. (2015). Detailed spatio-temporal reconstruction of eyelids (Vol. 34). Presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, Los Angeles, CA, United States: ACM. https://doi.org/10.1145/2766924' chicago: Bermano, Amit, Thabo Beeler, Yeara Kozlov, Derek Bradley, Bernd Bickel, and Markus Gross. “Detailed Spatio-Temporal Reconstruction of Eyelids,” Vol. 34. ACM, 2015. https://doi.org/10.1145/2766924. ieee: 'A. Bermano, T. Beeler, Y. Kozlov, D. Bradley, B. Bickel, and M. Gross, “Detailed spatio-temporal reconstruction of eyelids,” presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, Los Angeles, CA, United States, 2015, vol. 34, no. 4.' ista: 'Bermano A, Beeler T, Kozlov Y, Bradley D, Bickel B, Gross M. 2015. Detailed spatio-temporal reconstruction of eyelids. SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques vol. 34, 44.' mla: Bermano, Amit, et al. Detailed Spatio-Temporal Reconstruction of Eyelids. Vol. 34, no. 4, 44, ACM, 2015, doi:10.1145/2766924. short: A. Bermano, T. Beeler, Y. Kozlov, D. Bradley, B. Bickel, M. Gross, in:, ACM, 2015. conference: end_date: 2015-08-13 location: Los Angeles, CA, United States name: 'SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques' start_date: 2015-08-09 date_created: 2018-12-11T11:53:06Z date_published: 2015-07-27T00:00:00Z date_updated: 2021-01-12T06:52:05Z day: '27' department: - _id: BeBi doi: 10.1145/2766924 intvolume: ' 34' issue: '4' language: - iso: eng month: '07' oa_version: None publication_status: published publisher: ACM publist_id: '5535' quality_controlled: '1' scopus_import: 1 status: public title: Detailed spatio-temporal reconstruction of eyelids type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 34 year: '2015' ... --- _id: '1626' abstract: - lang: eng text: This paper introduces "OmniAD," a novel data-driven pipeline to model and acquire the aerodynamics of three-dimensional rigid objects. Traditionally, aerodynamics are examined through elaborate wind tunnel experiments or expensive fluid dynamics computations, and are only measured for a small number of discrete wind directions. OmniAD allows the evaluation of aerodynamic forces, such as drag and lift, for any incoming wind direction using a novel representation based on spherical harmonics. Our datadriven technique acquires the aerodynamic properties of an object simply by capturing its falling motion using a single camera. Once model parameters are estimated, OmniAD enables realistic realtime simulation of rigid bodies, such as the tumbling and gliding of leaves, without simulating the surrounding air. In addition, we propose an intuitive user interface based on OmniAD to interactively design three-dimensional kites that actually fly. Various nontraditional kites were designed to demonstrate the physical validity of our model. alternative_title: - ACM Transactions on Graphics article_number: '113' author: - first_name: Tobias full_name: Martin, Tobias last_name: Martin - first_name: Nobuyuki full_name: Umetani, Nobuyuki last_name: Umetani - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 citation: ama: 'Martin T, Umetani N, Bickel B. OmniAD: Data-driven omni-directional aerodynamics. In: Vol 34. ACM; 2015. doi:10.1145/2766919' apa: 'Martin, T., Umetani, N., & Bickel, B. (2015). OmniAD: Data-driven omni-directional aerodynamics (Vol. 34). Presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, Los Angeles, CA, United States: ACM. https://doi.org/10.1145/2766919' chicago: 'Martin, Tobias, Nobuyuki Umetani, and Bernd Bickel. “OmniAD: Data-Driven Omni-Directional Aerodynamics,” Vol. 34. ACM, 2015. https://doi.org/10.1145/2766919.' ieee: 'T. Martin, N. Umetani, and B. Bickel, “OmniAD: Data-driven omni-directional aerodynamics,” presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, Los Angeles, CA, United States, 2015, vol. 34, no. 4.' ista: 'Martin T, Umetani N, Bickel B. 2015. OmniAD: Data-driven omni-directional aerodynamics. SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, ACM Transactions on Graphics, vol. 34, 113.' mla: 'Martin, Tobias, et al. OmniAD: Data-Driven Omni-Directional Aerodynamics. Vol. 34, no. 4, 113, ACM, 2015, doi:10.1145/2766919.' short: T. Martin, N. Umetani, B. Bickel, in:, ACM, 2015. conference: end_date: 2015-08-13 location: Los Angeles, CA, United States name: 'SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques' start_date: 2015-08-09 date_created: 2018-12-11T11:53:06Z date_published: 2015-07-27T00:00:00Z date_updated: 2021-01-12T06:52:05Z day: '27' department: - _id: BeBi doi: 10.1145/2766919 intvolume: ' 34' issue: '4' language: - iso: eng month: '07' oa_version: None publication_status: published publisher: ACM publist_id: '5532' quality_controlled: '1' scopus_import: 1 status: public title: 'OmniAD: Data-driven omni-directional aerodynamics' type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 34 year: '2015' ... --- _id: '1628' abstract: - lang: eng text: We propose a method for fabricating deformable objects with spatially varying elasticity using 3D printing. Using a single, relatively stiff printer material, our method designs an assembly of smallscale microstructures that have the effect of a softer material at the object scale, with properties depending on the microstructure used in each part of the object. We build on work in the area of metamaterials, using numerical optimization to design tiled microstructures with desired properties, but with the key difference that our method designs families of related structures that can be interpolated to smoothly vary the material properties over a wide range. To create an object with spatially varying elastic properties, we tile the object's interior with microstructures drawn from these families, generating a different microstructure for each cell using an efficient algorithm to select compatible structures for neighboring cells. We show results computed for both 2D and 3D objects, validating several 2D and 3D printed structures using standard material tests as well as demonstrating various example applications. article_number: '136' article_processing_charge: No author: - first_name: Christian full_name: Schumacher, Christian last_name: Schumacher - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Jan full_name: Rys, Jan last_name: Rys - first_name: Steve full_name: Marschner, Steve last_name: Marschner - first_name: Chiara full_name: Daraio, Chiara last_name: Daraio - first_name: Markus full_name: Gross, Markus last_name: Gross citation: ama: 'Schumacher C, Bickel B, Rys J, Marschner S, Daraio C, Gross M. Microstructures to control elasticity in 3D printing. In: Vol 34. ACM; 2015. doi:10.1145/2766926' apa: 'Schumacher, C., Bickel, B., Rys, J., Marschner, S., Daraio, C., & Gross, M. (2015). Microstructures to control elasticity in 3D printing (Vol. 34). Presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, Los Angeles, CA, USA: ACM. https://doi.org/10.1145/2766926' chicago: Schumacher, Christian, Bernd Bickel, Jan Rys, Steve Marschner, Chiara Daraio, and Markus Gross. “Microstructures to Control Elasticity in 3D Printing,” Vol. 34. ACM, 2015. https://doi.org/10.1145/2766926. ieee: 'C. Schumacher, B. Bickel, J. Rys, S. Marschner, C. Daraio, and M. Gross, “Microstructures to control elasticity in 3D printing,” presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, Los Angeles, CA, USA, 2015, vol. 34, no. 4.' ista: 'Schumacher C, Bickel B, Rys J, Marschner S, Daraio C, Gross M. 2015. Microstructures to control elasticity in 3D printing. SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques vol. 34, 136.' mla: Schumacher, Christian, et al. Microstructures to Control Elasticity in 3D Printing. Vol. 34, no. 4, 136, ACM, 2015, doi:10.1145/2766926. short: C. Schumacher, B. Bickel, J. Rys, S. Marschner, C. Daraio, M. Gross, in:, ACM, 2015. conference: end_date: 2015-08-13 location: Los Angeles, CA, USA name: 'SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques' start_date: 2015-08-09 date_created: 2018-12-11T11:53:07Z date_published: 2015-08-01T00:00:00Z date_updated: 2021-01-12T06:52:06Z day: '01' department: - _id: BeBi doi: 10.1145/2766926 intvolume: ' 34' issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1145/2766926 month: '08' oa: 1 oa_version: Published Version publication_status: published publisher: ACM publist_id: '5529' quality_controlled: '1' scopus_import: 1 status: public title: Microstructures to control elasticity in 3D printing type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 34 year: '2015' ... --- _id: '1627' abstract: - lang: eng text: We present a computational tool for fabrication-oriented design of flexible rod meshes. Given a deformable surface and a set of deformed poses as input, our method automatically computes a printable rod mesh that, once manufactured, closely matches the input poses under the same boundary conditions. The core of our method is formed by an optimization scheme that adjusts the cross-sectional profiles of the rods and their rest centerline in order to best approximate the target deformations. This approach allows us to locally control the bending and stretching resistance of the surface with a single material, yielding high design flexibility and low fabrication cost. acknowledgement: This work was supported in part by grants from the Spanish Ministry of Economy (TIN2012-35840), and the European Research Council (ERC Starting Grant no. 280135 Animetrics). article_number: '138' author: - first_name: Jesús full_name: Pérez, Jesús last_name: Pérez - first_name: Bernhard full_name: Thomaszewski, Bernhard last_name: Thomaszewski - first_name: Stelian full_name: Coros, Stelian last_name: Coros - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: José full_name: Canabal, José last_name: Canabal - first_name: Robert full_name: Sumner, Robert last_name: Sumner - first_name: Miguel full_name: Otaduy, Miguel last_name: Otaduy citation: ama: 'Pérez J, Thomaszewski B, Coros S, et al. Design and fabrication of flexible rod meshes. In: Vol 34. ACM; 2015. doi:10.1145/2766998' apa: 'Pérez, J., Thomaszewski, B., Coros, S., Bickel, B., Canabal, J., Sumner, R., & Otaduy, M. (2015). Design and fabrication of flexible rod meshes (Vol. 34). Presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, Los Angeles, CA, United States: ACM. https://doi.org/10.1145/2766998' chicago: Pérez, Jesús, Bernhard Thomaszewski, Stelian Coros, Bernd Bickel, José Canabal, Robert Sumner, and Miguel Otaduy. “Design and Fabrication of Flexible Rod Meshes,” Vol. 34. ACM, 2015. https://doi.org/10.1145/2766998. ieee: 'J. Pérez et al., “Design and fabrication of flexible rod meshes,” presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques, Los Angeles, CA, United States, 2015, vol. 34, no. 4.' ista: 'Pérez J, Thomaszewski B, Coros S, Bickel B, Canabal J, Sumner R, Otaduy M. 2015. Design and fabrication of flexible rod meshes. SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques vol. 34, 138.' mla: Pérez, Jesús, et al. Design and Fabrication of Flexible Rod Meshes. Vol. 34, no. 4, 138, ACM, 2015, doi:10.1145/2766998. short: J. Pérez, B. Thomaszewski, S. Coros, B. Bickel, J. Canabal, R. Sumner, M. Otaduy, in:, ACM, 2015. conference: end_date: 2015-08-13 location: Los Angeles, CA, United States name: 'SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques' start_date: 2015-08-09 date_created: 2018-12-11T11:53:07Z date_published: 2015-07-27T00:00:00Z date_updated: 2021-01-12T06:52:06Z day: '27' department: - _id: BeBi doi: 10.1145/2766998 intvolume: ' 34' issue: '4' language: - iso: eng month: '07' oa_version: None publication_status: published publisher: ACM publist_id: '5530' quality_controlled: '1' scopus_import: 1 status: public title: Design and fabrication of flexible rod meshes type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 34 year: '2015' ... --- _id: '1734' abstract: - lang: eng text: Facial appearance capture is now firmly established within academic research and used extensively across various application domains, perhaps most prominently in the entertainment industry through the design of virtual characters in video games and films. While significant progress has occurred over the last two decades, no single survey currently exists that discusses the similarities, differences, and practical considerations of the available appearance capture techniques as applied to human faces. A central difficulty of facial appearance capture is the way light interacts with skin-which has a complex multi-layered structure-and the interactions that occur below the skin surface can, by definition, only be observed indirectly. In this report, we distinguish between two broad strategies for dealing with this complexity. "Image-based methods" try to exhaustively capture the exact face appearance under different lighting and viewing conditions, and then render the face through weighted image combinations. "Parametric methods" instead fit the captured reflectance data to some parametric appearance model used during rendering, allowing for a more lightweight and flexible representation but at the cost of potentially increased rendering complexity or inexact reproduction. The goal of this report is to provide an overview that can guide practitioners and researchers in assessing the tradeoffs between current approaches and identifying directions for future advances in facial appearance capture. author: - first_name: Oliver full_name: Klehm, Oliver last_name: Klehm - first_name: Fabrice full_name: Rousselle, Fabrice last_name: Rousselle - first_name: Marios full_name: Papas, Marios last_name: Papas - first_name: Derek full_name: Bradley, Derek last_name: Bradley - first_name: Christophe full_name: Hery, Christophe last_name: Hery - first_name: Bernd full_name: Bickel, Bernd id: 49876194-F248-11E8-B48F-1D18A9856A87 last_name: Bickel orcid: 0000-0001-6511-9385 - first_name: Wojciech full_name: Jarosz, Wojciech last_name: Jarosz - first_name: Thabo full_name: Beeler, Thabo last_name: Beeler citation: ama: Klehm O, Rousselle F, Papas M, et al. Recent advances in facial appearance capture. Computer Graphics Forum. 2015;34(2):709-733. doi:10.1111/cgf.12594 apa: Klehm, O., Rousselle, F., Papas, M., Bradley, D., Hery, C., Bickel, B., … Beeler, T. (2015). Recent advances in facial appearance capture. Computer Graphics Forum. Wiley-Blackwell. https://doi.org/10.1111/cgf.12594 chicago: Klehm, Oliver, Fabrice Rousselle, Marios Papas, Derek Bradley, Christophe Hery, Bernd Bickel, Wojciech Jarosz, and Thabo Beeler. “Recent Advances in Facial Appearance Capture.” Computer Graphics Forum. Wiley-Blackwell, 2015. https://doi.org/10.1111/cgf.12594. ieee: O. Klehm et al., “Recent advances in facial appearance capture,” Computer Graphics Forum, vol. 34, no. 2. Wiley-Blackwell, pp. 709–733, 2015. ista: Klehm O, Rousselle F, Papas M, Bradley D, Hery C, Bickel B, Jarosz W, Beeler T. 2015. Recent advances in facial appearance capture. Computer Graphics Forum. 34(2), 709–733. mla: Klehm, Oliver, et al. “Recent Advances in Facial Appearance Capture.” Computer Graphics Forum, vol. 34, no. 2, Wiley-Blackwell, 2015, pp. 709–33, doi:10.1111/cgf.12594. short: O. Klehm, F. Rousselle, M. Papas, D. Bradley, C. Hery, B. Bickel, W. Jarosz, T. Beeler, Computer Graphics Forum 34 (2015) 709–733. date_created: 2018-12-11T11:53:43Z date_published: 2015-05-01T00:00:00Z date_updated: 2021-01-12T06:52:52Z day: '01' department: - _id: BeBi doi: 10.1111/cgf.12594 intvolume: ' 34' issue: '2' language: - iso: eng main_file_link: - url: https://graphics.ethz.ch/~mpapas/publications/fac_star.pdf month: '05' oa_version: None page: 709 - 733 publication: Computer Graphics Forum publication_status: published publisher: Wiley-Blackwell publist_id: '5391' quality_controlled: '1' scopus_import: 1 status: public title: Recent advances in facial appearance capture type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 34 year: '2015' ...