[{"publisher":"ACM","citation":{"short":"Y.-L. Chen, M. Ly, C. Wojtan, Unified Treatment of Contact, Friction and Shock-Propagation in Rigid Body Animation, ACM, 2023.","apa":"Chen, Y.-L., Ly, M., &#38; Wojtan, C. (2023). <i>Unified treatment of contact, friction and shock-propagation in rigid body animation</i>. <i>Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Computer Animation</i>. Los Angeles, CA, United States: ACM. <a href=\"https://doi.org/10.1145/3606037.3606836\">https://doi.org/10.1145/3606037.3606836</a>","mla":"Chen, Yi-Lu, et al. “Unified Treatment of Contact, Friction and Shock-Propagation in Rigid Body Animation.” <i>Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Computer Animation</i>, ACM, 2023, doi:<a href=\"https://doi.org/10.1145/3606037.3606836\">10.1145/3606037.3606836</a>.","ieee":"Y.-L. Chen, M. Ly, and C. Wojtan, <i>Unified treatment of contact, friction and shock-propagation in rigid body animation</i>. ACM, 2023.","ama":"Chen Y-L, Ly M, Wojtan C. <i>Unified Treatment of Contact, Friction and Shock-Propagation in Rigid Body Animation</i>. ACM; 2023. doi:<a href=\"https://doi.org/10.1145/3606037.3606836\">10.1145/3606037.3606836</a>","chicago":"Chen, Yi-Lu, Mickaël Ly, and Chris Wojtan. <i>Unified Treatment of Contact, Friction and Shock-Propagation in Rigid Body Animation</i>. <i>Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Computer Animation</i>. ACM, 2023. <a href=\"https://doi.org/10.1145/3606037.3606836\">https://doi.org/10.1145/3606037.3606836</a>.","ista":"Chen Y-L, Ly M, Wojtan C. 2023. Unified treatment of contact, friction and shock-propagation in rigid body animation, ACM,p."},"acknowledgement":"We thank the anonymous reviewers and the members of the Visual Computing Group at ISTA for their helpful comments. This research was supported by the Scientific Service Units (SSU) of ISTA through resources provided by Scientific Computing, and was funded in part by the European Union (ERC-2021-COG 101045083 CoDiNA)","_id":"15292","department":[{"_id":"GradSch"},{"_id":"ChWo"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","abstract":[{"text":"We present a rigid body animation technique which prevents solids from interpenetrating, dissipates energy through friction, and propagates shocks through contacts. We employ the Alternating Direction Method of Multipliers (ADMM) to couple non-smooth Coulomb friction with impact propagation, allowing efficient and accurate non-smooth dynamics along with a correct transmission of impacts through assemblies of rigid bodies. We further extend our method to model adhesion, dynamic friction and lubricated contact.","lang":"eng"}],"project":[{"grant_number":"101045083","name":"Computational Discovery of Numerical Algorithms for Animation and Simulation of Natural Phenomena","_id":"34bc2376-11ca-11ed-8bc3-9a3b3961a088"}],"status":"public","file_date_updated":"2024-04-03T14:58:24Z","day":"01","language":[{"iso":"eng"}],"author":[{"first_name":"Yi-Lu","last_name":"Chen","id":"0b467602-dbcd-11ea-9d1d-ed480aa46b70","full_name":"Chen, Yi-Lu"},{"last_name":"Ly","id":"6340d7f0-b48d-11eb-b10d-b7487e71d9f1","full_name":"Ly, Mickaël","first_name":"Mickaël"},{"last_name":"Wojtan","full_name":"Wojtan, Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","first_name":"Christopher J","orcid":"0000-0001-6646-5546"}],"type":"conference_poster","year":"2023","date_updated":"2025-04-14T12:58:27Z","publication":"Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Computer Animation","publication_status":"published","fulldoi":"https://doi.org/10.1145/3606037.3606836","date_created":"2024-04-03T14:57:23Z","file":[{"file_name":"video.mp4","date_updated":"2024-04-03T14:58:24Z","success":1,"date_created":"2024-04-03T14:58:24Z","access_level":"open_access","checksum":"88bdef929ca262ee0eefae0bbc649139","file_size":58770929,"file_id":"15293","relation":"main_file","creator":"yichen","content_type":"video/mp4"},{"date_created":"2024-04-03T14:58:23Z","file_name":"frictionPoster_clean.pdf","success":1,"date_updated":"2024-04-03T14:58:23Z","checksum":"c06881ba847da365a74ac09c953eaffd","file_size":3951968,"file_id":"15294","access_level":"open_access","relation":"main_file","content_type":"application/pdf","creator":"yichen"}],"related_material":{"record":[{"status":"public","id":"14748","relation":"other"}]},"conference":{"start_date":"2023-08-04","name":"SCA: Symposium on Computer Animation","location":"Los Angeles, CA, United States","end_date":"2023-08-06"},"oa":1,"month":"08","article_processing_charge":"No","title":"Unified treatment of contact, friction and shock-propagation in rigid body animation","doi":"10.1145/3606037.3606836","date_published":"2023-08-01T00:00:00Z","corr_author":"1","has_accepted_license":"1","oa_version":"None","ddc":["005","531"]},{"isi":1,"volume":41,"acknowledged_ssus":[{"_id":"ScienComp"}],"intvolume":"        41","publication":"Computer Graphics Forum","publication_status":"published","publication_identifier":{"eissn":["1467-8659"],"issn":["0167-7055"]},"date_created":"2022-06-05T22:01:49Z","fulldoi":"https://doi.org/10.1111/cgf.14478","date_updated":"2024-10-22T09:58:19Z","type":"journal_article","year":"2022","article_type":"original","oa_version":"Submitted Version","quality_controlled":"1","main_file_link":[{"url":"https://hal.archives-ouvertes.fr/hal-03641349/","open_access":"1"}],"corr_author":"1","page":"343-353","date_published":"2022-05-01T00:00:00Z","doi":"10.1111/cgf.14478","title":"Coupling 3D liquid simulation with 2D wave propagation for large scale water surface animation using the equivalent sources method","article_processing_charge":"No","month":"05","oa":1,"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","issue":"2","ec_funded":1,"scopus_import":"1","_id":"11432","department":[{"_id":"ChWo"}],"citation":{"apa":"Schreck, C., &#38; Wojtan, C. (2022). Coupling 3D liquid simulation with 2D wave propagation for large scale water surface animation using the equivalent sources method. <i>Computer Graphics Forum</i>. Wiley. <a href=\"https://doi.org/10.1111/cgf.14478\">https://doi.org/10.1111/cgf.14478</a>","short":"C. Schreck, C. Wojtan, Computer Graphics Forum 41 (2022) 343–353.","ama":"Schreck C, Wojtan C. Coupling 3D liquid simulation with 2D wave propagation for large scale water surface animation using the equivalent sources method. <i>Computer Graphics Forum</i>. 2022;41(2):343-353. doi:<a href=\"https://doi.org/10.1111/cgf.14478\">10.1111/cgf.14478</a>","ieee":"C. Schreck and C. Wojtan, “Coupling 3D liquid simulation with 2D wave propagation for large scale water surface animation using the equivalent sources method,” <i>Computer Graphics Forum</i>, vol. 41, no. 2. Wiley, pp. 343–353, 2022.","mla":"Schreck, Camille, and Chris Wojtan. “Coupling 3D Liquid Simulation with 2D Wave Propagation for Large Scale Water Surface Animation Using the Equivalent Sources Method.” <i>Computer Graphics Forum</i>, vol. 41, no. 2, Wiley, 2022, pp. 343–53, doi:<a href=\"https://doi.org/10.1111/cgf.14478\">10.1111/cgf.14478</a>.","chicago":"Schreck, Camille, and Chris Wojtan. “Coupling 3D Liquid Simulation with 2D Wave Propagation for Large Scale Water Surface Animation Using the Equivalent Sources Method.” <i>Computer Graphics Forum</i>. Wiley, 2022. <a href=\"https://doi.org/10.1111/cgf.14478\">https://doi.org/10.1111/cgf.14478</a>.","ista":"Schreck C, Wojtan C. 2022. Coupling 3D liquid simulation with 2D wave propagation for large scale water surface animation using the equivalent sources method. Computer Graphics Forum. 41(2), 343–353."},"acknowledgement":"We wish to thank the anonymous reviewers and the members of the Visual Computing Group at IST Austria and MFX Team at INRIA for their valuable feedback. This research was supported by the Scientific Service Units (SSU) of IST Austria through resources provided by Scientific Computing. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 638176.","publisher":"Wiley","language":[{"iso":"eng"}],"author":[{"first_name":"Camille","id":"2B14B676-F248-11E8-B48F-1D18A9856A87","full_name":"Schreck, Camille","last_name":"Schreck"},{"id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","full_name":"Wojtan, Christopher J","last_name":"Wojtan","orcid":"0000-0001-6646-5546","first_name":"Christopher J"}],"day":"01","project":[{"_id":"2533E772-B435-11E9-9278-68D0E5697425","name":"Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales","call_identifier":"H2020","grant_number":"638176"}],"status":"public","abstract":[{"lang":"eng","text":"This paper proposes a method for simulating liquids in large bodies of water by coupling together a water surface wave simulator with a 3D Navier-Stokes simulator. The surface wave simulation uses the equivalent sources method (ESM) to efficiently animate large bodies of water with precisely controllable wave propagation behavior. The 3D liquid simulator animates complex non-linear fluid behaviors like splashes and breaking waves using off-the-shelf simulators using FLIP or the level set method with semi-Lagrangian advection.\r\nWe combine the two approaches by using the 3D solver to animate localized non-linear behaviors, and the 2D wave solver to animate larger regions with linear surface physics. We use the surface motion from the 3D solver as boundary conditions for 2D surface wave simulator, and we use the velocity and surface heights from the 2D surface wave simulator as boundary conditions for the 3D fluid simulation. We also introduce a novel technique for removing visual artifacts caused by numerical errors in 3D fluid solvers: we use experimental data to estimate the artificial dispersion caused by the 3D solver and we then carefully tune the wave speeds of the 2D solver to match it, effectively eliminating any differences in wave behavior across the boundary. To the best of our knowledge, this is the first time such a empirically driven error compensation approach has been used to remove coupling errors from a physics simulator.\r\nOur coupled simulation approach leverages the strengths of each simulation technique, animating large environments with seamless transitions between 2D and 3D physics."}],"external_id":{"isi":["000802723900027"]}},{"day":"15","language":[{"iso":"eng"}],"author":[{"orcid":"0000-0003-2189-3904","first_name":"Aleksei","full_name":"Kalinov, Aleksei","id":"44b7120e-eb97-11eb-a6c2-e1557aa81d02","last_name":"Kalinov"},{"first_name":"A.I.","last_name":"Osinskiy","full_name":"Osinskiy, A.I."},{"first_name":"S.A.","last_name":"Matveev","full_name":"Matveev, S.A."},{"first_name":"W.","last_name":"Otieno","full_name":"Otieno, W."},{"full_name":"Brilliantov, N.V.","last_name":"Brilliantov","first_name":"N.V."}],"status":"public","abstract":[{"text":"We revisit two basic Direct Simulation Monte Carlo Methods to model aggregation kinetics and extend them for aggregation processes with collisional fragmentation (shattering). We test the performance and accuracy of the extended methods and compare their performance with efficient deterministic finite-difference method applied to the same model. We validate the stochastic methods on the test problems and apply them to verify the existence of oscillating regimes in the aggregation-fragmentation kinetics recently detected in deterministic simulations. We confirm the emergence of steady oscillations of densities in such systems and prove the stability of the\r\noscillations with respect to fluctuations and noise.","lang":"eng"}],"external_id":{"isi":["000917225500013"],"arxiv":["2103.09481"]},"arxiv":1,"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","article_number":"111439","citation":{"ieee":"A. Kalinov, A. I. Osinskiy, S. A. Matveev, W. Otieno, and N. V. Brilliantov, “Direct simulation Monte Carlo for new regimes in aggregation-fragmentation kinetics,” <i>Journal of Computational Physics</i>, vol. 467. Elsevier, 2022.","mla":"Kalinov, Aleksei, et al. “Direct Simulation Monte Carlo for New Regimes in Aggregation-Fragmentation Kinetics.” <i>Journal of Computational Physics</i>, vol. 467, 111439, Elsevier, 2022, doi:<a href=\"https://doi.org/10.1016/j.jcp.2022.111439\">10.1016/j.jcp.2022.111439</a>.","ama":"Kalinov A, Osinskiy AI, Matveev SA, Otieno W, Brilliantov NV. Direct simulation Monte Carlo for new regimes in aggregation-fragmentation kinetics. <i>Journal of Computational Physics</i>. 2022;467. doi:<a href=\"https://doi.org/10.1016/j.jcp.2022.111439\">10.1016/j.jcp.2022.111439</a>","short":"A. Kalinov, A.I. Osinskiy, S.A. Matveev, W. Otieno, N.V. Brilliantov, Journal of Computational Physics 467 (2022).","apa":"Kalinov, A., Osinskiy, A. I., Matveev, S. A., Otieno, W., &#38; Brilliantov, N. V. (2022). Direct simulation Monte Carlo for new regimes in aggregation-fragmentation kinetics. <i>Journal of Computational Physics</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.jcp.2022.111439\">https://doi.org/10.1016/j.jcp.2022.111439</a>","ista":"Kalinov A, Osinskiy AI, Matveev SA, Otieno W, Brilliantov NV. 2022. Direct simulation Monte Carlo for new regimes in aggregation-fragmentation kinetics. Journal of Computational Physics. 467, 111439.","chicago":"Kalinov, Aleksei, A.I. Osinskiy, S.A. Matveev, W. Otieno, and N.V. Brilliantov. “Direct Simulation Monte Carlo for New Regimes in Aggregation-Fragmentation Kinetics.” <i>Journal of Computational Physics</i>. Elsevier, 2022. <a href=\"https://doi.org/10.1016/j.jcp.2022.111439\">https://doi.org/10.1016/j.jcp.2022.111439</a>."},"acknowledgement":"Zhores supercomputer of Skolkovo Institute of Science and Technology [68] has been used in the present research. S.A.M. was supported by Moscow Center for Fundamental and Applied Mathematics (the agreement with the Ministry of Education and Science of the Russian Federation No. 075-15-2019-1624). A.I.O. acknowledges RFBR project No. 20-31-90022. N.V.B. acknowledges the support of the Analytical Center (subsidy agreement 000000D730321P5Q0002, Grant No. 70-2021-00145 02.11.2021).","department":[{"_id":"GradSch"},{"_id":"ChWo"}],"_id":"11556","scopus_import":"1","publisher":"Elsevier","oa_version":"Preprint","article_type":"original","quality_controlled":"1","ddc":["518"],"main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2103.09481","open_access":"1"}],"doi":"10.1016/j.jcp.2022.111439","date_published":"2022-10-15T00:00:00Z","article_processing_charge":"No","title":"Direct simulation Monte Carlo for new regimes in aggregation-fragmentation kinetics","keyword":["Computer Science Applications","Physics and Astronomy (miscellaneous)","Applied Mathematics","Computational Mathematics","Modeling and Simulation","Numerical Analysis"],"oa":1,"month":"10","isi":1,"volume":467,"intvolume":"       467","date_updated":"2024-10-21T06:01:47Z","publication":"Journal of Computational Physics","publication_status":"published","publication_identifier":{"issn":["0021-9991"]},"date_created":"2022-07-11T12:19:59Z","fulldoi":"https://doi.org/10.1016/j.jcp.2022.111439","type":"journal_article","year":"2022"},{"language":[{"iso":"eng"}],"author":[{"id":"4DD40360-F248-11E8-B48F-1D18A9856A87","full_name":"Sperl, Georg","last_name":"Sperl","first_name":"Georg"},{"first_name":"Rosa M.","full_name":"Sánchez-Banderas, Rosa M.","last_name":"Sánchez-Banderas"},{"first_name":"Manwen","last_name":"Li","full_name":"Li, Manwen"},{"first_name":"Christopher J","orcid":"0000-0001-6646-5546","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","full_name":"Wojtan, Christopher J","last_name":"Wojtan"},{"full_name":"Otaduy, Miguel A.","last_name":"Otaduy","first_name":"Miguel A."}],"day":"22","status":"public","abstract":[{"text":"This paper introduces a methodology for inverse-modeling of yarn-level mechanics of cloth, based on the mechanical response of fabrics in the real world. We compiled a database from physical tests of several different knitted fabrics used in the textile industry. These data span different types of complex knit patterns, yarn compositions, and fabric finishes, and the results demonstrate diverse physical properties like stiffness, nonlinearity, and anisotropy.\r\n\r\nWe then develop a system for approximating these mechanical responses with yarn-level cloth simulation. To do so, we introduce an efficient pipeline for converting between fabric-level data and yarn-level simulation, including a novel swatch-level approximation for speeding up computation, and some small-but-necessary extensions to yarn-level models used in computer graphics. The dataset used for this paper can be found at http://mslab.es/projects/YarnLevelFabrics.","lang":"eng"}],"external_id":{"isi":["000830989200114"]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_number":"65","issue":"4","_id":"11736","department":[{"_id":"ChWo"}],"scopus_import":"1","citation":{"chicago":"Sperl, Georg, Rosa M. Sánchez-Banderas, Manwen Li, Chris Wojtan, and Miguel A. Otaduy. “Estimation of Yarn-Level Simulation Models for Production Fabrics.” <i>ACM Transactions on Graphics</i>. Association for Computing Machinery, 2022. <a href=\"https://doi.org/10.1145/3528223.3530167\">https://doi.org/10.1145/3528223.3530167</a>.","ista":"Sperl G, Sánchez-Banderas RM, Li M, Wojtan C, Otaduy MA. 2022. Estimation of yarn-level simulation models for production fabrics. ACM Transactions on Graphics. 41(4), 65.","short":"G. Sperl, R.M. Sánchez-Banderas, M. Li, C. Wojtan, M.A. Otaduy, ACM Transactions on Graphics 41 (2022).","apa":"Sperl, G., Sánchez-Banderas, R. M., Li, M., Wojtan, C., &#38; Otaduy, M. A. (2022). Estimation of yarn-level simulation models for production fabrics. <i>ACM Transactions on Graphics</i>. Association for Computing Machinery. <a href=\"https://doi.org/10.1145/3528223.3530167\">https://doi.org/10.1145/3528223.3530167</a>","ama":"Sperl G, Sánchez-Banderas RM, Li M, Wojtan C, Otaduy MA. Estimation of yarn-level simulation models for production fabrics. <i>ACM Transactions on Graphics</i>. 2022;41(4). doi:<a href=\"https://doi.org/10.1145/3528223.3530167\">10.1145/3528223.3530167</a>","ieee":"G. Sperl, R. M. Sánchez-Banderas, M. Li, C. Wojtan, and M. A. Otaduy, “Estimation of yarn-level simulation models for production fabrics,” <i>ACM Transactions on Graphics</i>, vol. 41, no. 4. Association for Computing Machinery, 2022.","mla":"Sperl, Georg, et al. “Estimation of Yarn-Level Simulation Models for Production Fabrics.” <i>ACM Transactions on Graphics</i>, vol. 41, no. 4, 65, Association for Computing Machinery, 2022, doi:<a href=\"https://doi.org/10.1145/3528223.3530167\">10.1145/3528223.3530167</a>."},"acknowledgement":"We wish to thank the anonymous reviewers for their helpful comments. To develop this project, we were helped by many people both at Under Armour (Clay Dean, Randall Harward, Kyle Blakely, Craig Simile, Michael Seiz, Brooke Malone, Brittainy McFarland, Emilie Phan, Lindsey Kern, Courtney Oswald, Haley Barkley, Bob Chin, Adam Bayer, Connie Kwok, Marielle Newman, Nick Pence, Allison Hicks, Allison White, Candace Rubenstein, Jeremy Stangland, Fred Fagergren, Michael Mazzoleni, Nathaniel Berry, Manuel Frank) and SEDDI (Gabriel Cirio, Alejandro Rodríguez, Sofía Dominguez, Alicia Nicas, Elena Garcés, Daniel Rodríguez, David Pascual, Manuel Godoy, Sergio Suja, Sergio Ruiz, Roberto Condori, Alberto Martín, Graham Sullivan). We also thank the members of the Visual Computing Group at IST Austria and the Multimodal Simulation Lab at URJC for their feedback. This research was supported by the Scientific Service Units (SSU) of IST Austria through resources provided by Scientific Computing, and it was funded in part by the European Research Council (ERC Consolidator Grant 772738 TouchDesign).","publisher":"Association for Computing Machinery","article_type":"original","oa_version":"Published Version","ddc":["000"],"quality_controlled":"1","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1145/3528223.3530167"}],"date_published":"2022-07-22T00:00:00Z","doi":"10.1145/3528223.3530167","title":"Estimation of yarn-level simulation models for production fabrics","article_processing_charge":"No","month":"07","oa":1,"volume":41,"isi":1,"related_material":{"record":[{"status":"public","id":"12358","relation":"dissertation_contains"}],"link":[{"description":"News on the ISTA website","relation":"press_release","url":"https://ista.ac.at/en/news/digital-yarn-real-socks/"}]},"acknowledged_ssus":[{"_id":"ScienComp"}],"intvolume":"        41","publication":"ACM Transactions on Graphics","publication_status":"published","publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368"]},"fulldoi":"https://doi.org/10.1145/3528223.3530167","date_created":"2022-08-07T22:01:58Z","date_updated":"2026-06-18T17:20:41Z","type":"journal_article","year":"2022"},{"abstract":[{"lang":"eng","text":"The complex yarn structure of knitted and woven fabrics gives rise to both a mechanical and\r\nvisual complexity. The small-scale interactions of yarns colliding with and pulling on each\r\nother result in drastically different large-scale stretching and bending behavior, introducing\r\nanisotropy, curling, and more. While simulating cloth as individual yarns can reproduce this\r\ncomplexity and match the quality of real fabric, it may be too computationally expensive for\r\nlarge fabrics. On the other hand, continuum-based approaches do not need to discretize the\r\ncloth at a stitch-level, but it is non-trivial to find a material model that would replicate the\r\nlarge-scale behavior of yarn fabrics, and they discard the intricate visual detail. In this thesis,\r\nwe discuss three methods to try and bridge the gap between small-scale and large-scale yarn\r\nmechanics using numerical homogenization: fitting a continuum model to periodic yarn simulations, adding mechanics-aware yarn detail onto thin-shell simulations, and quantitatively\r\nfitting yarn parameters to physical measurements of real fabric.\r\nTo start, we present a method for animating yarn-level cloth effects using a thin-shell solver.\r\nWe first use a large number of periodic yarn-level simulations to build a model of the potential\r\nenergy density of the cloth, and then use it to compute forces in a thin-shell simulator. The\r\nresulting simulations faithfully reproduce expected effects like the stiffening of woven fabrics\r\nand the highly deformable nature and anisotropy of knitted fabrics at a fraction of the cost of\r\nfull yarn-level simulation.\r\nWhile our thin-shell simulations are able to capture large-scale yarn mechanics, they lack\r\nthe rich visual detail of yarn-level simulations. Therefore, we propose a method to animate\r\nyarn-level cloth geometry on top of an underlying deforming mesh in a mechanics-aware\r\nfashion in real time. Using triangle strains to interpolate precomputed yarn geometry, we are\r\nable to reproduce effects such as knit loops tightening under stretching at negligible cost.\r\nFinally, we introduce a methodology for inverse-modeling of yarn-level mechanics of cloth,\r\nbased on the mechanical response of fabrics in the real world. We compile a database from\r\nphysical tests of several knitted fabrics used in the textile industry spanning diverse physical\r\nproperties like stiffness, nonlinearity, and anisotropy. We then develop a system for approximating these mechanical responses with yarn-level cloth simulation, using homogenized\r\nshell models to speed up computation and adding some small-but-necessary extensions to\r\nyarn-level models used in computer graphics.\r\n"}],"status":"public","project":[{"call_identifier":"H2020","_id":"2533E772-B435-11E9-9278-68D0E5697425","name":"Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales","grant_number":"638176"}],"day":"22","file_date_updated":"2023-02-02T09:39:25Z","author":[{"last_name":"Sperl","full_name":"Sperl, Georg","id":"4DD40360-F248-11E8-B48F-1D18A9856A87","first_name":"Georg"}],"language":[{"iso":"eng"}],"publisher":"Institute of Science and Technology Austria","citation":{"chicago":"Sperl, Georg. “Homogenizing Yarn Simulations: Large-Scale Mechanics, Small-Scale Detail, and Quantitative Fitting.” Institute of Science and Technology Austria, 2022. <a href=\"https://doi.org/10.15479/at:ista:12103\">https://doi.org/10.15479/at:ista:12103</a>.","ista":"Sperl G. 2022. Homogenizing yarn simulations: Large-scale mechanics, small-scale detail, and quantitative fitting. Institute of Science and Technology Austria.","apa":"Sperl, G. (2022). <i>Homogenizing yarn simulations: Large-scale mechanics, small-scale detail, and quantitative fitting</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/at:ista:12103\">https://doi.org/10.15479/at:ista:12103</a>","short":"G. Sperl, Homogenizing Yarn Simulations: Large-Scale Mechanics, Small-Scale Detail, and Quantitative Fitting, Institute of Science and Technology Austria, 2022.","ieee":"G. Sperl, “Homogenizing yarn simulations: Large-scale mechanics, small-scale detail, and quantitative fitting,” Institute of Science and Technology Austria, 2022.","mla":"Sperl, Georg. <i>Homogenizing Yarn Simulations: Large-Scale Mechanics, Small-Scale Detail, and Quantitative Fitting</i>. Institute of Science and Technology Austria, 2022, doi:<a href=\"https://doi.org/10.15479/at:ista:12103\">10.15479/at:ista:12103</a>.","ama":"Sperl G. Homogenizing yarn simulations: Large-scale mechanics, small-scale detail, and quantitative fitting. 2022. doi:<a href=\"https://doi.org/10.15479/at:ista:12103\">10.15479/at:ista:12103</a>"},"degree_awarded":"PhD","_id":"12358","department":[{"_id":"GradSch"},{"_id":"ChWo"}],"ec_funded":1,"alternative_title":["ISTA Thesis"],"user_id":"ba8df636-2132-11f1-aed0-ed93e2281fdd","oa":1,"supervisor":[{"last_name":"Wojtan","full_name":"Wojtan, Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","first_name":"Christopher J","orcid":"0000-0001-6646-5546"}],"month":"09","article_processing_charge":"No","title":"Homogenizing yarn simulations: Large-scale mechanics, small-scale detail, and quantitative fitting","doi":"10.15479/at:ista:12103","OA_place":"publisher","date_published":"2022-09-22T00:00:00Z","has_accepted_license":"1","page":"138","corr_author":"1","ddc":["000","620"],"oa_version":"Published Version","year":"2022","type":"dissertation","date_updated":"2026-06-18T19:57:47Z","date_created":"2023-01-24T10:49:46Z","fulldoi":"https://doi.org/10.15479/at:ista:12103","file":[{"relation":"main_file","creator":"cchlebak","content_type":"application/pdf","date_updated":"2023-02-02T09:29:57Z","file_name":"thesis_gsperl.pdf","title":"Thesis","date_created":"2023-01-25T12:04:41Z","description":"This is the main PDF file of the thesis. 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Hidden degrees of freedom in implicit vortex filaments. <i>ACM Transactions on Graphics</i>. 2022;41(6). doi:<a href=\"https://doi.org/10.1145/3550454.3555459\">10.1145/3550454.3555459</a>","mla":"Ishida, Sadashige, et al. “Hidden Degrees of Freedom in Implicit Vortex Filaments.” <i>ACM Transactions on Graphics</i>, vol. 41, no. 6, 241, Association for Computing Machinery, 2022, doi:<a href=\"https://doi.org/10.1145/3550454.3555459\">10.1145/3550454.3555459</a>.","ieee":"S. Ishida, C. Wojtan, and A. Chern, “Hidden degrees of freedom in implicit vortex filaments,” <i>ACM Transactions on Graphics</i>, vol. 41, no. 6. Association for Computing Machinery, 2022.","short":"S. Ishida, C. Wojtan, A. Chern, ACM Transactions on Graphics 41 (2022).","apa":"Ishida, S., Wojtan, C., &#38; Chern, A. (2022). Hidden degrees of freedom in implicit vortex filaments. <i>ACM Transactions on Graphics</i>. Association for Computing Machinery. <a href=\"https://doi.org/10.1145/3550454.3555459\">https://doi.org/10.1145/3550454.3555459</a>","ista":"Ishida S, Wojtan C, Chern A. 2022. Hidden degrees of freedom in implicit vortex filaments. ACM Transactions on Graphics. 41(6), 241.","chicago":"Ishida, Sadashige, Chris Wojtan, and Albert Chern. “Hidden Degrees of Freedom in Implicit Vortex Filaments.” <i>ACM Transactions on Graphics</i>. Association for Computing Machinery, 2022. <a href=\"https://doi.org/10.1145/3550454.3555459\">https://doi.org/10.1145/3550454.3555459</a>."},"acknowledgement":"We thank the visual computing group at IST Austria for their valuable discussions and feedback. Houdini Education licenses were provided by SideFX software. 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Furthermore, we note how these hidden degrees of freedom perfectly map to a Clebsch representation in fluid dynamics. Motivated by these observations, we introduce untwisted level set functions and non-swirling dynamics which successfully regularize sources of numerical instability, particularly in the twisting modes around curve filaments. A consequence is a novel simulation method which produces stable dynamics for large numbers of interacting vortex filaments and effortlessly handles topological changes and re-connection events."}],"external_id":{"isi":["000891651900061"]},"language":[{"iso":"eng"}],"author":[{"first_name":"Sadashige","orcid":"0000-0002-3121-3100","last_name":"Ishida","id":"6F7C4B96-A8E9-11E9-A7CA-09ECE5697425","full_name":"Ishida, Sadashige"},{"id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","full_name":"Wojtan, Christopher J","last_name":"Wojtan","first_name":"Christopher J","orcid":"0000-0001-6646-5546"},{"first_name":"Albert","last_name":"Chern","full_name":"Chern, Albert"}],"file_date_updated":"2023-01-30T07:15:48Z","day":"01","project":[{"name":"Computational Discovery of Numerical Algorithms for Animation and Simulation of Natural Phenomena","_id":"34bc2376-11ca-11ed-8bc3-9a3b3961a088","grant_number":"101045083"}],"status":"public"},{"publisher":"IST Austria","year":"2021","gitlab_commit_id":"6a77e7e22769230ae5f5edaa090fb4b828e57573","type":"software","file":[{"relation":"main_file","creator":"gsperl","content_type":"application/zip","date_updated":"2021-04-16T14:15:12Z","success":1,"file_name":"MADYPG_extra_data.zip","date_created":"2021-04-16T14:15:12Z","access_level":"open_access","file_size":802586232,"file_id":"9328","checksum":"0324cb519273371708743f3282e7c081"},{"checksum":"4c224551adf852b136ec21a4e13f0c1b","file_id":"9353","file_size":64962865,"access_level":"open_access","date_created":"2021-04-26T09:33:44Z","file_name":"MADYPG.zip","date_updated":"2021-04-26T09:33:44Z","content_type":"application/gzip","creator":"pub-gitlab-bot","relation":"main_file"}],"fulldoi":"https://doi.org/10.15479/AT:ISTA:9327","date_created":"2021-04-16T14:26:19Z","_id":"9327","department":[{"_id":"GradSch"},{"_id":"ChWo"}],"date_updated":"2026-06-18T19:57:47Z","citation":{"apa":"Sperl, G., Narain, R., &#38; Wojtan, C. 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Mechanics-Aware Deformation of Yarn Pattern Geometry (Additional Animation/Model Data), IST Austria, <a href=\"https://doi.org/10.15479/AT:ISTA:9327\">10.15479/AT:ISTA:9327</a>."},"gitlab_url":"https://git.ist.ac.at/gsperl/MADYPG","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","related_material":{"record":[{"relation":"used_for_analysis_in","status":"public","id":"9818"}]},"month":"05","oa":1,"title":"Mechanics-Aware Deformation of Yarn Pattern Geometry (Additional Animation/Model Data)","abstract":[{"text":"This archive contains the missing sweater mesh animations and displacement models for the code of \"Mechanics-Aware Deformation of Yarn Pattern Geometry\"\r\n\r\nCode Repository: https://git.ist.ac.at/gsperl/MADYPG","lang":"eng"}],"date_published":"2021-05-01T00:00:00Z","status":"public","doi":"10.15479/AT:ISTA:9327","author":[{"id":"4DD40360-F248-11E8-B48F-1D18A9856A87","full_name":"Sperl, Georg","last_name":"Sperl","first_name":"Georg"},{"first_name":"Rahul","full_name":"Narain, Rahul","last_name":"Narain"},{"first_name":"Christopher J","orcid":"0000-0001-6646-5546","last_name":"Wojtan","full_name":"Wojtan, Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87"}],"tmp":{"legal_code_url":"https://opensource.org/licenses/MIT","name":"The MIT License","short":"MIT"},"ddc":["005"],"has_accepted_license":"1","file_date_updated":"2021-04-26T09:33:44Z"},{"year":"2021","type":"journal_article","date_updated":"2026-06-18T19:57:47Z","fulldoi":"https://doi.org/10.1145/3450626.3459816","date_created":"2021-08-08T22:01:27Z","publication":"ACM Transactions on Graphics","publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368"]},"publication_status":"published","intvolume":"        40","acknowledged_ssus":[{"_id":"ScienComp"}],"related_material":{"record":[{"relation":"software","id":"9327","status":"public"},{"relation":"dissertation_contains","id":"12358","status":"public"}],"link":[{"url":"https://ist.ac.at/en/news/knitting-virtual-yarn/","description":"News on IST Webpage","relation":"press_release"}]},"isi":1,"volume":40,"oa":1,"month":"08","article_processing_charge":"Yes (in subscription journal)","title":"Mechanics-aware deformation of yarn pattern geometry","doi":"10.1145/3450626.3459816","date_published":"2021-08-01T00:00:00Z","quality_controlled":"1","ddc":["000"],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.1145/3450626.3459816"}],"oa_version":"Published Version","article_type":"original","publisher":"Association for Computing Machinery","acknowledgement":"We wish to thank the anonymous reviewers and the members of the Visual Computing Group at IST Austria for their valuable feedback. We also thank Seddi Labs for providing the garment model with fold-over seams.\r\nThis research was supported by the Scientific Service Units (SSU) of IST Austria through resources provided by Scientific\r\nComputing. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 638176. Rahul Narain is supported by a Pankaj Gupta Young Faculty Fellowship and a gift from Adobe Inc.","citation":{"chicago":"Sperl, Georg, Rahul Narain, and Chris Wojtan. “Mechanics-Aware Deformation of Yarn Pattern Geometry.” <i>ACM Transactions on Graphics</i>. Association for Computing Machinery, 2021. <a href=\"https://doi.org/10.1145/3450626.3459816\">https://doi.org/10.1145/3450626.3459816</a>.","ista":"Sperl G, Narain R, Wojtan C. 2021. Mechanics-aware deformation of yarn pattern geometry. ACM Transactions on Graphics. 40(4), 168.","short":"G. Sperl, R. Narain, C. Wojtan, ACM Transactions on Graphics 40 (2021).","apa":"Sperl, G., Narain, R., &#38; Wojtan, C. (2021). Mechanics-aware deformation of yarn pattern geometry. <i>ACM Transactions on Graphics</i>. Association for Computing Machinery. <a href=\"https://doi.org/10.1145/3450626.3459816\">https://doi.org/10.1145/3450626.3459816</a>","ieee":"G. Sperl, R. Narain, and C. Wojtan, “Mechanics-aware deformation of yarn pattern geometry,” <i>ACM Transactions on Graphics</i>, vol. 40, no. 4. Association for Computing Machinery, 2021.","mla":"Sperl, Georg, et al. “Mechanics-Aware Deformation of Yarn Pattern Geometry.” <i>ACM Transactions on Graphics</i>, vol. 40, no. 4, 168, Association for Computing Machinery, 2021, doi:<a href=\"https://doi.org/10.1145/3450626.3459816\">10.1145/3450626.3459816</a>.","ama":"Sperl G, Narain R, Wojtan C. Mechanics-aware deformation of yarn pattern geometry. <i>ACM Transactions on Graphics</i>. 2021;40(4). doi:<a href=\"https://doi.org/10.1145/3450626.3459816\">10.1145/3450626.3459816</a>"},"scopus_import":"1","_id":"9818","department":[{"_id":"GradSch"},{"_id":"ChWo"}],"ec_funded":1,"issue":"4","article_number":"168","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","abstract":[{"text":"Triangle mesh-based simulations are able to produce satisfying animations of knitted and woven cloth; however, they lack the rich geometric detail of yarn-level simulations. Naive texturing approaches do not consider yarn-level physics, while full yarn-level simulations may become prohibitively expensive for large garments. We propose a method to animate yarn-level cloth geometry on top of an underlying deforming mesh in a mechanics-aware fashion. Using triangle strains to interpolate precomputed yarn geometry, we are able to reproduce effects such as knit loops tightening under stretching. In combination with precomputed mesh animation or real-time mesh simulation, our method is able to animate yarn-level cloth in real-time at large scales.","lang":"eng"}],"external_id":{"isi":["000674930900132"]},"status":"public","project":[{"grant_number":"638176","call_identifier":"H2020","name":"Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales","_id":"2533E772-B435-11E9-9278-68D0E5697425"}],"day":"01","author":[{"last_name":"Sperl","full_name":"Sperl, Georg","id":"4DD40360-F248-11E8-B48F-1D18A9856A87","first_name":"Georg"},{"first_name":"Rahul","last_name":"Narain","full_name":"Narain, Rahul"},{"first_name":"Christopher J","orcid":"0000-0001-6646-5546","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","full_name":"Wojtan, Christopher J","last_name":"Wojtan"}],"language":[{"iso":"eng"}]},{"year":"2020","type":"journal_article","file":[{"file_id":"8626","file_size":21910098,"checksum":"8d4c55443a0ee335bb5bb652de503042","access_level":"open_access","date_created":"2020-10-08T08:34:53Z","success":1,"date_updated":"2020-10-08T08:34:53Z","file_name":"preprint.pdf","creator":"wojtan","content_type":"application/pdf","relation":"main_file"}],"fulldoi":"https://doi.org/10.1109/TVCG.2018.2883628","date_created":"2018-12-16T22:59:21Z","publication_status":"published","publication":"IEEE Transactions on Visualization and Computer Graphics","publication_identifier":{"eissn":["1941-0506"],"issn":["1077-2626"]},"date_updated":"2025-07-10T11:52:55Z","acknowledged_ssus":[{"_id":"ScienComp"}],"intvolume":"        26","volume":26,"isi":1,"month":"06","oa":1,"title":"Simulating liquids on dynamically warping grids","article_processing_charge":"No","date_published":"2020-06-01T00:00:00Z","doi":"10.1109/TVCG.2018.2883628","quality_controlled":"1","pmid":1,"ddc":["006"],"article_type":"original","oa_version":"Submitted Version","page":"2288-2302","has_accepted_license":"1","publisher":"IEEE","scopus_import":"1","_id":"5681","department":[{"_id":"ChWo"}],"acknowledgement":"This work was partially supported by JSPS Grant-in-Aid forYoung Scientists (Start-up) 16H07410, the ERC StartingGrantsrealFlow(StG-2015-637014) andBigSplash(StG-2014-638176). This research was supported by the Scientific Ser-vice Units (SSU) of IST Austria through resources providedby Scientific Computing. We would like to express my grati-tude to Nobuyuki Umetani and Tomas Skrivan for insight-ful discussion.","citation":{"chicago":"Hikaru, Ibayashi, Chris Wojtan, Nils Thuerey, Takeo Igarashi, and Ryoichi Ando. “Simulating Liquids on Dynamically Warping Grids.” <i>IEEE Transactions on Visualization and Computer Graphics</i>. IEEE, 2020. <a href=\"https://doi.org/10.1109/TVCG.2018.2883628\">https://doi.org/10.1109/TVCG.2018.2883628</a>.","ista":"Hikaru I, Wojtan C, Thuerey N, Igarashi T, Ando R. 2020. Simulating liquids on dynamically warping grids. IEEE Transactions on Visualization and Computer Graphics. 26(6), 2288–2302.","apa":"Hikaru, I., Wojtan, C., Thuerey, N., Igarashi, T., &#38; Ando, R. (2020). Simulating liquids on dynamically warping grids. <i>IEEE Transactions on Visualization and Computer Graphics</i>. IEEE. <a href=\"https://doi.org/10.1109/TVCG.2018.2883628\">https://doi.org/10.1109/TVCG.2018.2883628</a>","short":"I. Hikaru, C. Wojtan, N. Thuerey, T. Igarashi, R. Ando, IEEE Transactions on Visualization and Computer Graphics 26 (2020) 2288–2302.","mla":"Hikaru, Ibayashi, et al. “Simulating Liquids on Dynamically Warping Grids.” <i>IEEE Transactions on Visualization and Computer Graphics</i>, vol. 26, no. 6, IEEE, 2020, pp. 2288–302, doi:<a href=\"https://doi.org/10.1109/TVCG.2018.2883628\">10.1109/TVCG.2018.2883628</a>.","ieee":"I. Hikaru, C. Wojtan, N. Thuerey, T. Igarashi, and R. Ando, “Simulating liquids on dynamically warping grids,” <i>IEEE Transactions on Visualization and Computer Graphics</i>, vol. 26, no. 6. IEEE, pp. 2288–2302, 2020.","ama":"Hikaru I, Wojtan C, Thuerey N, Igarashi T, Ando R. Simulating liquids on dynamically warping grids. <i>IEEE Transactions on Visualization and Computer Graphics</i>. 2020;26(6):2288-2302. doi:<a href=\"https://doi.org/10.1109/TVCG.2018.2883628\">10.1109/TVCG.2018.2883628</a>"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","issue":"6","abstract":[{"text":"We introduce dynamically warping grids for adaptive liquid simulation. Our primary contributions are a strategy for dynamically deforming regular grids over the course of a simulation and a method for efficiently utilizing these deforming grids for liquid simulation. Prior work has shown that unstructured grids are very effective for adaptive fluid simulations. However, unstructured grids often lead to complicated implementations and a poor cache hit rate due to inconsistent memory access. Regular grids, on the other hand, provide a fast, fixed memory access pattern and straightforward implementation. Our method combines the advantages of both: we leverage the simplicity of regular grids while still achieving practical and controllable spatial adaptivity. We demonstrate that our method enables adaptive simulations that are fast, flexible, and robust to null-space issues. At the same time, our method is simple to implement and takes advantage of existing highly-tuned algorithms.","lang":"eng"}],"external_id":{"pmid":["30507534"],"isi":["000532295600014"]},"status":"public","author":[{"last_name":"Hikaru","full_name":"Hikaru, Ibayashi","first_name":"Ibayashi"},{"orcid":"0000-0001-6646-5546","first_name":"Christopher J","last_name":"Wojtan","full_name":"Wojtan, Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Nils","full_name":"Thuerey, Nils","last_name":"Thuerey"},{"last_name":"Igarashi","full_name":"Igarashi, Takeo","first_name":"Takeo"},{"first_name":"Ryoichi","full_name":"Ando, Ryoichi","last_name":"Ando"}],"language":[{"iso":"eng"}],"day":"01","file_date_updated":"2020-10-08T08:34:53Z"},{"oa":1,"month":"07","article_processing_charge":"No","title":"A model for soap film dynamics with evolving thickness","doi":"10.1145/3386569.3392405","date_published":"2020-07-08T00:00:00Z","has_accepted_license":"1","quality_controlled":"1","ddc":["000"],"main_file_link":[{"url":"https://doi.org/10.1145/3386569.3392405","open_access":"1"}],"article_type":"original","oa_version":"Submitted Version","year":"2020","type":"journal_article","date_updated":"2026-04-16T08:29:36Z","fulldoi":"https://doi.org/10.1145/3386569.3392405","file":[{"relation":"main_file","content_type":"application/pdf","creator":"dernst","file_name":"2020_soapfilm_submitted.pdf","date_updated":"2020-11-23T09:03:19Z","success":1,"date_created":"2020-11-23T09:03:19Z","access_level":"open_access","checksum":"813831ca91319d794d9748c276b24578","file_size":14935529,"file_id":"8795"}],"date_created":"2020-09-13T22:01:18Z","publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368"]},"publication_status":"published","publication":"ACM Transactions on Graphics","intvolume":"        39","acknowledged_ssus":[{"_id":"ScienComp"}],"related_material":{"record":[{"status":"public","id":"19630","relation":"dissertation_contains"}]},"isi":1,"volume":39,"abstract":[{"lang":"eng","text":"Previous research on animations of soap bubbles, films, and foams largely focuses on the motion and geometric shape of the bubble surface. These works neglect the evolution of the bubble’s thickness, which is normally responsible for visual phenomena like surface vortices, Newton’s interference patterns, capillary waves, and deformation-dependent rupturing of films in a foam. In this paper, we model these natural phenomena by introducing the film thickness as a reduced degree of freedom in the Navier-Stokes equations and deriving their equations of motion. We discretize the equations on a nonmanifold triangle mesh surface and couple it to an existing bubble solver. In doing so, we also introduce an incompressible fluid solver for 2.5D films and a novel advection algorithm for convecting fields across non-manifold surface junctions. Our simulations enhance state-of-the-art bubble solvers with additional effects caused by convection, rippling, draining, and evaporation of the thin film."}],"external_id":{"isi":["000583700300004"]},"project":[{"_id":"2533E772-B435-11E9-9278-68D0E5697425","name":"Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales","call_identifier":"H2020","grant_number":"638176"}],"status":"public","day":"08","file_date_updated":"2020-11-23T09:03:19Z","author":[{"first_name":"Sadashige","orcid":"0000-0002-3121-3100","last_name":"Ishida","full_name":"Ishida, Sadashige","id":"6F7C4B96-A8E9-11E9-A7CA-09ECE5697425"},{"first_name":"Peter","last_name":"Synak","id":"331776E2-F248-11E8-B48F-1D18A9856A87","full_name":"Synak, Peter"},{"last_name":"Narita","full_name":"Narita, Fumiya","first_name":"Fumiya"},{"last_name":"Hachisuka","full_name":"Hachisuka, Toshiya","first_name":"Toshiya"},{"last_name":"Wojtan","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","full_name":"Wojtan, Christopher J","first_name":"Christopher J","orcid":"0000-0001-6646-5546"}],"language":[{"iso":"eng"}],"publisher":"Association for Computing Machinery","acknowledgement":"We wish to thank the anonymous reviewers and the members of the Visual Computing Group at IST Austria for their valuable feedback, especially Camille Schreck for her help in rendering. This research was supported by the Scientific Service Units (SSU) of IST Austria through resources provided by Scientific Computing. We would like to thank the authors of [Belcour and Barla 2017] for providing their implementation, the authors of [Atkins and Elliott 2010] and [Seychelles et al. 2008] for allowing us to use their results, and Rok Grah for helpful discussions. Finally, we thank Ryoichi Ando for many discussions from the beginning of the project that resulted in important contents of the paper including our formulation, numerical scheme, and initial implementation. This project has received funding from the\r\nEuropean Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 638176.","citation":{"chicago":"Ishida, Sadashige, Peter Synak, Fumiya Narita, Toshiya Hachisuka, and Chris Wojtan. “A Model for Soap Film Dynamics with Evolving Thickness.” <i>ACM Transactions on Graphics</i>. Association for Computing Machinery, 2020. <a href=\"https://doi.org/10.1145/3386569.3392405\">https://doi.org/10.1145/3386569.3392405</a>.","ista":"Ishida S, Synak P, Narita F, Hachisuka T, Wojtan C. 2020. A model for soap film dynamics with evolving thickness. ACM Transactions on Graphics. 39(4), 31.","apa":"Ishida, S., Synak, P., Narita, F., Hachisuka, T., &#38; Wojtan, C. (2020). A model for soap film dynamics with evolving thickness. <i>ACM Transactions on Graphics</i>. Association for Computing Machinery. <a href=\"https://doi.org/10.1145/3386569.3392405\">https://doi.org/10.1145/3386569.3392405</a>","short":"S. Ishida, P. Synak, F. Narita, T. Hachisuka, C. Wojtan, ACM Transactions on Graphics 39 (2020).","mla":"Ishida, Sadashige, et al. “A Model for Soap Film Dynamics with Evolving Thickness.” <i>ACM Transactions on Graphics</i>, vol. 39, no. 4, 31, Association for Computing Machinery, 2020, doi:<a href=\"https://doi.org/10.1145/3386569.3392405\">10.1145/3386569.3392405</a>.","ieee":"S. Ishida, P. Synak, F. Narita, T. Hachisuka, and C. Wojtan, “A model for soap film dynamics with evolving thickness,” <i>ACM Transactions on Graphics</i>, vol. 39, no. 4. Association for Computing Machinery, 2020.","ama":"Ishida S, Synak P, Narita F, Hachisuka T, Wojtan C. A model for soap film dynamics with evolving thickness. <i>ACM Transactions on Graphics</i>. 2020;39(4). doi:<a href=\"https://doi.org/10.1145/3386569.3392405\">10.1145/3386569.3392405</a>"},"scopus_import":"1","_id":"8384","department":[{"_id":"ChWo"}],"ec_funded":1,"issue":"4","article_number":"31","user_id":"ba8df636-2132-11f1-aed0-ed93e2281fdd"},{"type":"journal_article","year":"2020","publication_status":"published","publication_identifier":{"eissn":["1557-7368"],"issn":["0730-0301"]},"publication":"ACM Transactions on Graphics","fulldoi":"https://doi.org/10.1145/3386569.3392412","file":[{"creator":"dernst","content_type":"application/pdf","relation":"main_file","access_level":"open_access","file_id":"8794","file_size":38922662,"checksum":"cf4c1d361c3196c4bd424520a5588205","success":1,"date_updated":"2020-11-23T09:01:22Z","file_name":"2020_hylc_submitted.pdf","date_created":"2020-11-23T09:01:22Z"}],"date_created":"2020-09-13T22:01:18Z","date_updated":"2026-04-16T08:31:55Z","acknowledged_ssus":[{"_id":"ScienComp"}],"intvolume":"        39","volume":39,"isi":1,"related_material":{"record":[{"relation":"dissertation_contains","status":"public","id":"12358"}]},"month":"07","oa":1,"title":"Homogenized yarn-level cloth","article_processing_charge":"No","date_published":"2020-07-08T00:00:00Z","doi":"10.1145/3386569.3392412","article_type":"original","oa_version":"Submitted Version","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1145/3386569.3392412"}],"quality_controlled":"1","ddc":["000"],"corr_author":"1","has_accepted_license":"1","publisher":"Association for Computing Machinery","department":[{"_id":"ChWo"}],"_id":"8385","scopus_import":"1","citation":{"ista":"Sperl G, Narain R, Wojtan C. 2020. Homogenized yarn-level cloth. ACM Transactions on Graphics. 39(4), 48.","chicago":"Sperl, Georg, Rahul Narain, and Chris Wojtan. “Homogenized Yarn-Level Cloth.” <i>ACM Transactions on Graphics</i>. Association for Computing Machinery, 2020. <a href=\"https://doi.org/10.1145/3386569.3392412\">https://doi.org/10.1145/3386569.3392412</a>.","ieee":"G. Sperl, R. Narain, and C. Wojtan, “Homogenized yarn-level cloth,” <i>ACM Transactions on Graphics</i>, vol. 39, no. 4. Association for Computing Machinery, 2020.","mla":"Sperl, Georg, et al. “Homogenized Yarn-Level Cloth.” <i>ACM Transactions on Graphics</i>, vol. 39, no. 4, 48, Association for Computing Machinery, 2020, doi:<a href=\"https://doi.org/10.1145/3386569.3392412\">10.1145/3386569.3392412</a>.","ama":"Sperl G, Narain R, Wojtan C. Homogenized yarn-level cloth. <i>ACM Transactions on Graphics</i>. 2020;39(4). doi:<a href=\"https://doi.org/10.1145/3386569.3392412\">10.1145/3386569.3392412</a>","apa":"Sperl, G., Narain, R., &#38; Wojtan, C. (2020). Homogenized yarn-level cloth. <i>ACM Transactions on Graphics</i>. Association for Computing Machinery. <a href=\"https://doi.org/10.1145/3386569.3392412\">https://doi.org/10.1145/3386569.3392412</a>","short":"G. Sperl, R. Narain, C. Wojtan, ACM Transactions on Graphics 39 (2020)."},"acknowledgement":"We wish to thank the anonymous reviewers and the members of the Visual Computing Group at IST Austria for their valuable feedback. We also thank the creators of the Berkeley Garment Library [de Joya et al. 2012] for providing garment meshes, [Krishnamurthy and Levoy 1996] and [Turk and Levoy 1994] for the armadillo and bunny meshes, the creators of libWetCloth [Fei et al. 2018] for their implementation of discrete elastic rod forces, and Tomáš Skřivan for\r\ninspiring discussions and help with Mathematica code generation. This research was supported by the Scientific Service Units (SSU) of IST Austria through resources provided by Scientific Computing. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 638176. Rahul Narain is supported by a Pankaj Gupta Young Faculty Fellowship and a gift from Adobe Inc.","ec_funded":1,"user_id":"ba8df636-2132-11f1-aed0-ed93e2281fdd","article_number":"48","issue":"4","external_id":{"isi":["000583700300021"]},"abstract":[{"text":"We present a method for animating yarn-level cloth effects using a thin-shell solver. We accomplish this through numerical homogenization: we first use a large number of yarn-level simulations to build a model of the potential energy density of the cloth, and then use this energy density function to compute forces in a thin shell simulator. We model several yarn-based materials, including both woven and knitted fabrics. Our model faithfully reproduces expected effects like the stiffness of woven fabrics, and the highly deformable nature and anisotropy of knitted fabrics. Our approach does not require any real-world experiments nor measurements; because the method is based entirely on simulations, it can generate entirely new material models quickly, without the need for testing apparatuses or human intervention. We provide data-driven models of several woven and knitted fabrics, which can be used for efficient simulation with an off-the-shelf cloth solver.","lang":"eng"}],"project":[{"grant_number":"638176","_id":"2533E772-B435-11E9-9278-68D0E5697425","name":"Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales","call_identifier":"H2020"}],"status":"public","language":[{"iso":"eng"}],"author":[{"first_name":"Georg","last_name":"Sperl","id":"4DD40360-F248-11E8-B48F-1D18A9856A87","full_name":"Sperl, Georg"},{"first_name":"Rahul","last_name":"Narain","full_name":"Narain, Rahul"},{"first_name":"Christopher J","orcid":"0000-0001-6646-5546","last_name":"Wojtan","full_name":"Wojtan, Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87"}],"file_date_updated":"2020-11-23T09:01:22Z","day":"08"},{"ec_funded":1,"user_id":"ba8df636-2132-11f1-aed0-ed93e2281fdd","article_number":"65","issue":"4","publisher":"Association for Computing Machinery","scopus_import":"1","_id":"8535","department":[{"_id":"ChWo"}],"citation":{"ieee":"T. Skrivan, A. Soderstrom, J. Johansson, C. Sprenger, K. Museth, and C. Wojtan, “Wave curves: Simulating Lagrangian water waves on dynamically deforming surfaces,” <i>ACM Transactions on Graphics</i>, vol. 39, no. 4. Association for Computing Machinery, 2020.","mla":"Skrivan, Tomas, et al. “Wave Curves: Simulating Lagrangian Water Waves on Dynamically Deforming Surfaces.” <i>ACM Transactions on Graphics</i>, vol. 39, no. 4, 65, Association for Computing Machinery, 2020, doi:<a href=\"https://doi.org/10.1145/3386569.3392466\">10.1145/3386569.3392466</a>.","ama":"Skrivan T, Soderstrom A, Johansson J, Sprenger C, Museth K, Wojtan C. Wave curves: Simulating Lagrangian water waves on dynamically deforming surfaces. <i>ACM Transactions on Graphics</i>. 2020;39(4). doi:<a href=\"https://doi.org/10.1145/3386569.3392466\">10.1145/3386569.3392466</a>","apa":"Skrivan, T., Soderstrom, A., Johansson, J., Sprenger, C., Museth, K., &#38; Wojtan, C. (2020). Wave curves: Simulating Lagrangian water waves on dynamically deforming surfaces. <i>ACM Transactions on Graphics</i>. Association for Computing Machinery. <a href=\"https://doi.org/10.1145/3386569.3392466\">https://doi.org/10.1145/3386569.3392466</a>","short":"T. Skrivan, A. Soderstrom, J. Johansson, C. Sprenger, K. Museth, C. Wojtan, ACM Transactions on Graphics 39 (2020).","ista":"Skrivan T, Soderstrom A, Johansson J, Sprenger C, Museth K, Wojtan C. 2020. Wave curves: Simulating Lagrangian water waves on dynamically deforming surfaces. ACM Transactions on Graphics. 39(4), 65.","chicago":"Skrivan, Tomas, Andreas Soderstrom, John Johansson, Christoph Sprenger, Ken Museth, and Chris Wojtan. “Wave Curves: Simulating Lagrangian Water Waves on Dynamically Deforming Surfaces.” <i>ACM Transactions on Graphics</i>. Association for Computing Machinery, 2020. <a href=\"https://doi.org/10.1145/3386569.3392466\">https://doi.org/10.1145/3386569.3392466</a>."},"acknowledgement":"We wish to thank the anonymous reviewers and the members of the Visual Computing Group at IST Austria for their valuable feedback. This research was supported by the Scientific Service Units (SSU) of IST Austria through resources provided by Scientific Computing. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 638176 and Marie SkłodowskaCurie Grant Agreement No. 665385.","project":[{"_id":"2533E772-B435-11E9-9278-68D0E5697425","name":"Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales","call_identifier":"H2020","grant_number":"638176"},{"grant_number":"665385","call_identifier":"H2020","name":"International IST Doctoral Program","_id":"2564DBCA-B435-11E9-9278-68D0E5697425"}],"status":"public","language":[{"iso":"eng"}],"author":[{"first_name":"Tomas","last_name":"Skrivan","id":"486A5A46-F248-11E8-B48F-1D18A9856A87","full_name":"Skrivan, Tomas"},{"first_name":"Andreas","last_name":"Soderstrom","full_name":"Soderstrom, Andreas"},{"full_name":"Johansson, John","last_name":"Johansson","first_name":"John"},{"first_name":"Christoph","last_name":"Sprenger","full_name":"Sprenger, Christoph"},{"last_name":"Museth","full_name":"Museth, Ken","first_name":"Ken"},{"orcid":"0000-0001-6646-5546","first_name":"Christopher J","last_name":"Wojtan","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","full_name":"Wojtan, Christopher J"}],"file_date_updated":"2020-09-21T07:51:44Z","day":"08","external_id":{"isi":["000583700300038"]},"abstract":[{"lang":"eng","text":"We propose a method to enhance the visual detail of a water surface simulation. Our method works as a post-processing step which takes a simulation as input and increases its apparent resolution by simulating many detailed Lagrangian water waves on top of it. We extend linear water wave theory to work in non-planar domains which deform over time, and we discretize the theory using Lagrangian wave packets attached to spline curves. The method is numerically stable and trivially parallelizable, and it produces high frequency ripples with dispersive wave-like behaviors customized to the underlying fluid simulation."}],"acknowledged_ssus":[{"_id":"ScienComp"}],"intvolume":"        39","volume":39,"isi":1,"type":"journal_article","year":"2020","publication_identifier":{"eissn":["1557-7368"],"issn":["0730-0301"]},"publication":"ACM Transactions on Graphics","publication_status":"published","fulldoi":"https://doi.org/10.1145/3386569.3392466","file":[{"content_type":"application/pdf","creator":"dernst","relation":"main_file","checksum":"c3a680893f01cc4a9e961ff0a4cfa12f","file_id":"8541","file_size":20223953,"access_level":"open_access","date_created":"2020-09-21T07:51:44Z","file_name":"2020_ACM_Skrivan.pdf","success":1,"date_updated":"2020-09-21T07:51:44Z"}],"date_created":"2020-09-20T22:01:37Z","date_updated":"2026-04-16T08:26:38Z","date_published":"2020-07-08T00:00:00Z","doi":"10.1145/3386569.3392466","oa_version":"Published Version","article_type":"original","quality_controlled":"1","ddc":["000"],"corr_author":"1","has_accepted_license":"1","month":"07","oa":1,"title":"Wave curves: Simulating Lagrangian water waves on dynamically deforming surfaces","article_processing_charge":"No"},{"_id":"8765","scopus_import":"1","department":[{"_id":"ChWo"}],"acknowledgement":"We wish to thank the anonymous reviewers and the members of the Visual Computing Group at IST Austria for their valuable feedback. This research was supported by the Scientific Service Units (SSU) of IST Austria through resources provided by Scientific Computing. We would also like to thank Joseph Teran and Chenfanfu Jiang for the helpful discussions.\r\nThis project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme under grant agreement No. 638176.","citation":{"mla":"Schreck, Camille, and Chris Wojtan. “A Practical Method for Animating Anisotropic Elastoplastic Materials.” <i>Computer Graphics Forum</i>, vol. 39, no. 2, Wiley, 2020, pp. 89–99, doi:<a href=\"https://doi.org/10.1111/cgf.13914\">10.1111/cgf.13914</a>.","ieee":"C. Schreck and C. Wojtan, “A practical method for animating anisotropic elastoplastic materials,” <i>Computer Graphics Forum</i>, vol. 39, no. 2. Wiley, pp. 89–99, 2020.","ama":"Schreck C, Wojtan C. A practical method for animating anisotropic elastoplastic materials. <i>Computer Graphics Forum</i>. 2020;39(2):89-99. doi:<a href=\"https://doi.org/10.1111/cgf.13914\">10.1111/cgf.13914</a>","short":"C. Schreck, C. Wojtan, Computer Graphics Forum 39 (2020) 89–99.","apa":"Schreck, C., &#38; Wojtan, C. (2020). A practical method for animating anisotropic elastoplastic materials. <i>Computer Graphics Forum</i>. Wiley. <a href=\"https://doi.org/10.1111/cgf.13914\">https://doi.org/10.1111/cgf.13914</a>","ista":"Schreck C, Wojtan C. 2020. A practical method for animating anisotropic elastoplastic materials. Computer Graphics Forum. 39(2), 89–99.","chicago":"Schreck, Camille, and Chris Wojtan. “A Practical Method for Animating Anisotropic Elastoplastic Materials.” <i>Computer Graphics Forum</i>. Wiley, 2020. <a href=\"https://doi.org/10.1111/cgf.13914\">https://doi.org/10.1111/cgf.13914</a>."},"publisher":"Wiley","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","issue":"2","ec_funded":1,"abstract":[{"text":"This paper introduces a simple method for simulating highly anisotropic elastoplastic material behaviors like the dissolution of fibrous phenomena (splintering wood, shredding bales of hay) and materials composed of large numbers of irregularly‐shaped bodies (piles of twigs, pencils, or cards). We introduce a simple transformation of the anisotropic problem into an equivalent isotropic one, and we solve this new “fictitious” isotropic problem using an existing simulator based on the material point method. Our approach results in minimal changes to existing simulators, and it allows us to re‐use popular isotropic plasticity models like the Drucker‐Prager yield criterion instead of inventing new anisotropic plasticity models for every phenomenon we wish to simulate.","lang":"eng"}],"external_id":{"isi":["000548709600008"]},"author":[{"first_name":"Camille","full_name":"Schreck, Camille","id":"2B14B676-F248-11E8-B48F-1D18A9856A87","last_name":"Schreck"},{"last_name":"Wojtan","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","full_name":"Wojtan, Christopher J","first_name":"Christopher J","orcid":"0000-0001-6646-5546"}],"language":[{"iso":"eng"}],"day":"01","file_date_updated":"2020-11-23T09:05:13Z","status":"public","project":[{"_id":"2533E772-B435-11E9-9278-68D0E5697425","name":"Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales","call_identifier":"H2020","grant_number":"638176"}],"fulldoi":"https://doi.org/10.1111/cgf.13914","file":[{"relation":"main_file","content_type":"application/pdf","creator":"dernst","success":1,"date_updated":"2020-11-23T09:05:13Z","file_name":"2020_poff_revisited.pdf","date_created":"2020-11-23T09:05:13Z","access_level":"open_access","file_id":"8796","file_size":38969122,"checksum":"7605f605acd84d0942b48bc7a1c2d72e"}],"date_created":"2020-11-17T09:35:10Z","publication_status":"published","publication_identifier":{"issn":["0167-7055"],"eissn":["1467-8659"]},"publication":"Computer Graphics Forum","date_updated":"2024-10-22T09:58:14Z","year":"2020","type":"journal_article","volume":39,"isi":1,"acknowledged_ssus":[{"_id":"ScienComp"}],"intvolume":"        39","title":"A practical method for animating anisotropic elastoplastic materials","keyword":["Computer Networks and Communications"],"article_processing_charge":"No","month":"05","oa":1,"quality_controlled":"1","ddc":["000"],"oa_version":"Submitted Version","article_type":"original","page":"89-99","has_accepted_license":"1","date_published":"2020-05-01T00:00:00Z","doi":"10.1111/cgf.13914"},{"language":[{"iso":"eng"}],"author":[{"id":"44D6411A-F248-11E8-B48F-1D18A9856A87","full_name":"Jeschke, Stefan","last_name":"Jeschke","first_name":"Stefan"},{"id":"400429CC-F248-11E8-B48F-1D18A9856A87","full_name":"Hafner, Christian","last_name":"Hafner","first_name":"Christian"},{"last_name":"Chentanez","full_name":"Chentanez, Nuttapong","first_name":"Nuttapong"},{"last_name":"Macklin","full_name":"Macklin, Miles","first_name":"Miles"},{"full_name":"Müller-Fischer, Matthias","last_name":"Müller-Fischer","first_name":"Matthias"},{"last_name":"Wojtan","full_name":"Wojtan, Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6646-5546","first_name":"Christopher J"}],"day":"01","project":[{"call_identifier":"H2020","_id":"2533E772-B435-11E9-9278-68D0E5697425","name":"Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales","grant_number":"638176"},{"grant_number":"715767","call_identifier":"H2020","_id":"24F9549A-B435-11E9-9278-68D0E5697425","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling"}],"status":"public","abstract":[{"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.","lang":"eng"}],"external_id":{"isi":["000591780400005"]},"user_id":"2EBD1598-F248-11E8-B48F-1D18A9856A87","issue":"8","ec_funded":1,"scopus_import":"1","_id":"8766","department":[{"_id":"ChWo"},{"_id":"BeBi"}],"citation":{"ama":"Jeschke S, Hafner C, Chentanez N, Macklin M, Müller-Fischer M, Wojtan C. Making procedural water waves boundary-aware. <i>Computer Graphics forum</i>. 2020;39(8):47-54. doi:<a href=\"https://doi.org/10.1111/cgf.14100\">10.1111/cgf.14100</a>","mla":"Jeschke, Stefan, et al. “Making Procedural Water Waves Boundary-Aware.” <i>Computer Graphics Forum</i>, vol. 39, no. 8, Wiley, 2020, pp. 47–54, doi:<a href=\"https://doi.org/10.1111/cgf.14100\">10.1111/cgf.14100</a>.","ieee":"S. Jeschke, C. Hafner, N. Chentanez, M. Macklin, M. Müller-Fischer, and C. Wojtan, “Making procedural water waves boundary-aware,” <i>Computer Graphics forum</i>, vol. 39, no. 8. Wiley, pp. 47–54, 2020.","apa":"Jeschke, S., Hafner, C., Chentanez, N., Macklin, M., Müller-Fischer, M., &#38; Wojtan, C. (2020). Making procedural water waves boundary-aware. <i>Computer Graphics Forum</i>. Online Symposium: Wiley. <a href=\"https://doi.org/10.1111/cgf.14100\">https://doi.org/10.1111/cgf.14100</a>","short":"S. Jeschke, C. Hafner, N. Chentanez, M. Macklin, M. Müller-Fischer, C. Wojtan, Computer Graphics Forum 39 (2020) 47–54.","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.","chicago":"Jeschke, Stefan, Christian Hafner, Nuttapong Chentanez, Miles Macklin, Matthias Müller-Fischer, and Chris Wojtan. “Making Procedural Water Waves Boundary-Aware.” <i>Computer Graphics Forum</i>. Wiley, 2020. <a href=\"https://doi.org/10.1111/cgf.14100\">https://doi.org/10.1111/cgf.14100</a>."},"publisher":"Wiley","oa_version":"None","article_type":"original","quality_controlled":"1","page":"47-54","date_published":"2020-12-01T00:00:00Z","doi":"10.1111/cgf.14100","title":"Making procedural water waves boundary-aware","article_processing_charge":"No","month":"12","volume":39,"isi":1,"conference":{"name":"SCA: Symposium on Computer Animation","start_date":"2020-10-06","end_date":"2020-10-09","location":"Online Symposium"},"intvolume":"        39","publication_status":"published","publication":"Computer Graphics forum","date_created":"2020-11-17T10:47:48Z","fulldoi":"https://doi.org/10.1111/cgf.14100","date_updated":"2024-10-22T09:58:15Z","type":"journal_article","year":"2020"},{"has_accepted_license":"1","oa_version":"Submitted Version","quality_controlled":"1","ddc":["000","005"],"doi":"10.1145/3306346.3323002","date_published":"2019-07-01T00:00:00Z","article_processing_charge":"No","title":"Fundamental solutions for water wave animation","oa":1,"month":"07","related_material":{"link":[{"url":"https://ist.ac.at/en/news/new-method-makes-realistic-water-wave-animations-more-efficient/","description":"News on IST Homepage","relation":"press_release"}]},"isi":1,"volume":38,"intvolume":"        38","acknowledged_ssus":[{"_id":"ScienComp"}],"date_updated":"2024-10-22T09:58:22Z","publication_status":"published","publication":"ACM Transactions on Graphics","date_created":"2019-05-14T07:04:06Z","fulldoi":"https://doi.org/10.1145/3306346.3323002","file":[{"relation":"main_file","creator":"dernst","content_type":"application/pdf","date_created":"2019-05-14T07:03:55Z","file_name":"2019_ACM_Schreck.pdf","date_updated":"2020-07-14T12:47:30Z","checksum":"1b737dfe3e051aba8f3f4ab1dceda673","file_size":44328918,"file_id":"6443","access_level":"open_access"}],"type":"journal_article","year":"2019","file_date_updated":"2020-07-14T12:47:30Z","day":"01","language":[{"iso":"eng"}],"author":[{"id":"2B14B676-F248-11E8-B48F-1D18A9856A87","full_name":"Schreck, Camille","last_name":"Schreck","first_name":"Camille"},{"first_name":"Christian","last_name":"Hafner","full_name":"Hafner, Christian","id":"400429CC-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Christopher J","orcid":"0000-0001-6646-5546","full_name":"Wojtan, Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","last_name":"Wojtan"}],"status":"public","project":[{"grant_number":"638176","call_identifier":"H2020","_id":"2533E772-B435-11E9-9278-68D0E5697425","name":"Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales"},{"grant_number":"715767","name":"MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and Modeling","_id":"24F9549A-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"},{"grant_number":"665385","call_identifier":"H2020","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","name":"International IST Doctoral Program"}],"abstract":[{"text":"This paper investigates the use of fundamental solutions for animating detailed linear water surface waves. We first propose an analytical solution for efficiently animating circular ripples in closed form. We then show how to adapt the method of fundamental solutions (MFS) to create ambient waves interacting with complex obstacles. Subsequently, we present a novel wavelet-based discretization which outperforms the state of the art MFS approach for simulating time-varying water surface waves with moving obstacles. Our results feature high-resolution spatial details, interactions with complex boundaries, and large open ocean domains. Our method compares favorably with previous work as well as known analytical solutions. We also present comparisons between our method and real world examples.","lang":"eng"}],"external_id":{"isi":["000475740600104"]},"issue":"4","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","article_number":"130","ec_funded":1,"citation":{"chicago":"Schreck, Camille, Christian Hafner, and Chris Wojtan. “Fundamental Solutions for Water Wave Animation.” <i>ACM Transactions on Graphics</i>. ACM, 2019. <a href=\"https://doi.org/10.1145/3306346.3323002\">https://doi.org/10.1145/3306346.3323002</a>.","ista":"Schreck C, Hafner C, Wojtan C. 2019. Fundamental solutions for water wave animation. ACM Transactions on Graphics. 38(4), 130.","apa":"Schreck, C., Hafner, C., &#38; Wojtan, C. (2019). Fundamental solutions for water wave animation. <i>ACM Transactions on Graphics</i>. ACM. <a href=\"https://doi.org/10.1145/3306346.3323002\">https://doi.org/10.1145/3306346.3323002</a>","short":"C. Schreck, C. Hafner, C. Wojtan, ACM Transactions on Graphics 38 (2019).","ama":"Schreck C, Hafner C, Wojtan C. Fundamental solutions for water wave animation. <i>ACM Transactions on Graphics</i>. 2019;38(4). doi:<a href=\"https://doi.org/10.1145/3306346.3323002\">10.1145/3306346.3323002</a>","ieee":"C. Schreck, C. Hafner, and C. Wojtan, “Fundamental solutions for water wave animation,” <i>ACM Transactions on Graphics</i>, vol. 38, no. 4. ACM, 2019.","mla":"Schreck, Camille, et al. “Fundamental Solutions for Water Wave Animation.” <i>ACM Transactions on Graphics</i>, vol. 38, no. 4, 130, ACM, 2019, doi:<a href=\"https://doi.org/10.1145/3306346.3323002\">10.1145/3306346.3323002</a>."},"scopus_import":"1","_id":"6442","department":[{"_id":"ChWo"}],"publisher":"ACM"},{"article_number":"020002","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"6642","scopus_import":"1","department":[{"_id":"ChWo"}],"citation":{"ieee":"M. Dostalík, V. Pruša, and T. Skrivan, “On diffusive variants of some classical viscoelastic rate-type models,” in <i>AIP Conference Proceedings</i>, Zlin, Czech Republic, 2019, vol. 2107.","mla":"Dostalík, Mark, et al. “On Diffusive Variants of Some Classical Viscoelastic Rate-Type Models.” <i>AIP Conference Proceedings</i>, vol. 2107, 020002, AIP Publishing, 2019, doi:<a href=\"https://doi.org/10.1063/1.5109493\">10.1063/1.5109493</a>.","ama":"Dostalík M, Pruša V, Skrivan T. On diffusive variants of some classical viscoelastic rate-type models. In: <i>AIP Conference Proceedings</i>. Vol 2107. AIP Publishing; 2019. doi:<a href=\"https://doi.org/10.1063/1.5109493\">10.1063/1.5109493</a>","apa":"Dostalík, M., Pruša, V., &#38; Skrivan, T. (2019). On diffusive variants of some classical viscoelastic rate-type models. In <i>AIP Conference Proceedings</i> (Vol. 2107). Zlin, Czech Republic: AIP Publishing. <a href=\"https://doi.org/10.1063/1.5109493\">https://doi.org/10.1063/1.5109493</a>","short":"M. Dostalík, V. Pruša, T. Skrivan, in:, AIP Conference Proceedings, AIP Publishing, 2019.","ista":"Dostalík M, Pruša V, Skrivan T. 2019. On diffusive variants of some classical viscoelastic rate-type models. AIP Conference Proceedings. 8th International Conference on Novel Trends in Rheology vol. 2107, 020002.","chicago":"Dostalík, Mark, Vít Pruša, and Tomas Skrivan. “On Diffusive Variants of Some Classical Viscoelastic Rate-Type Models.” In <i>AIP Conference Proceedings</i>, Vol. 2107. AIP Publishing, 2019. <a href=\"https://doi.org/10.1063/1.5109493\">https://doi.org/10.1063/1.5109493</a>."},"publisher":"AIP Publishing","author":[{"last_name":"Dostalík","full_name":"Dostalík, Mark","first_name":"Mark"},{"last_name":"Pruša","full_name":"Pruša, Vít","first_name":"Vít"},{"full_name":"Skrivan, Tomas","id":"486A5A46-F248-11E8-B48F-1D18A9856A87","last_name":"Skrivan","first_name":"Tomas"}],"language":[{"iso":"eng"}],"day":"21","status":"public","external_id":{"arxiv":["1902.07983"],"isi":["000479303100002"]},"abstract":[{"text":"We present a thermodynamically based approach to the design of models for viscoelastic fluids with stress diffusion effect. In particular, we show how to add a stress diffusion term to some standard viscoelastic rate-type models (Giesekus, FENE-P, Johnson–Segalman, Phan-Thien–Tanner and Bautista–Manero–Puig) so that the resulting models with the added stress diffusion term are thermodynamically consistent in the sense that they obey the first and the second law of thermodynamics. We point out the potential applications of the provided thermodynamical background in the study of flows of fluids described by the proposed models.","lang":"eng"}],"arxiv":1,"conference":{"location":"Zlin, Czech Republic","end_date":"2019-07-31","name":"8th International Conference on Novel Trends in Rheology","start_date":"2019-07-30"},"isi":1,"volume":2107,"intvolume":"      2107","fulldoi":"https://doi.org/10.1063/1.5109493","date_created":"2019-07-15T10:07:09Z","publication":"AIP Conference Proceedings","publication_status":"published","date_updated":"2024-02-28T13:01:28Z","year":"2019","type":"conference","quality_controlled":"1","main_file_link":[{"url":"https://arxiv.org/abs/1902.07983","open_access":"1"}],"oa_version":"Preprint","date_published":"2019-05-21T00:00:00Z","doi":"10.1063/1.5109493","title":"On diffusive variants of some classical viscoelastic rate-type models","article_processing_charge":"No","month":"05","oa":1},{"project":[{"grant_number":"642841","name":"Distributed 3D Object Design","_id":"2508E324-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"}],"status":"public","day":"01","author":[{"last_name":"Kondapaneni","full_name":"Kondapaneni, Ivo","first_name":"Ivo"},{"first_name":"Petr","full_name":"Vevoda, Petr","last_name":"Vevoda"},{"full_name":"Grittmann, Pascal","last_name":"Grittmann","first_name":"Pascal"},{"full_name":"Skrivan, Tomas","id":"486A5A46-F248-11E8-B48F-1D18A9856A87","last_name":"Skrivan","first_name":"Tomas"},{"full_name":"Slusallek, Philipp","last_name":"Slusallek","first_name":"Philipp"},{"last_name":"Křivánek","full_name":"Křivánek, Jaroslav","first_name":"Jaroslav"}],"language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"Multiple Importance Sampling (MIS) is a key technique for achieving robustness of Monte Carlo estimators in computer graphics and other fields. We derive optimal weighting functions for MIS that provably minimize the variance of an MIS estimator, given a set of sampling techniques. We show that the resulting variance reduction over the balance heuristic can be higher than predicted by the variance bounds derived by Veach and Guibas, who assumed only non-negative weights in their proof. We theoretically analyze the variance of the optimal MIS weights and show the relation to the variance of the balance heuristic. Furthermore, we establish a connection between the new weighting functions and control variates as previously applied to mixture sampling. We apply the new optimal weights to integration problems in light transport and show that they allow for new design considerations when choosing the appropriate sampling techniques for a given integration problem."}],"external_id":{"isi":["000475740600011"]},"ec_funded":1,"issue":"4","article_number":"37","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","publisher":"ACM","citation":{"ista":"Kondapaneni I, Vevoda P, Grittmann P, Skrivan T, Slusallek P, Křivánek J. 2019. Optimal multiple importance sampling. ACM Transactions on Graphics. 38(4), 37.","chicago":"Kondapaneni, Ivo, Petr Vevoda, Pascal Grittmann, Tomas Skrivan, Philipp Slusallek, and Jaroslav Křivánek. “Optimal Multiple Importance Sampling.” <i>ACM Transactions on Graphics</i>. ACM, 2019. <a href=\"https://doi.org/10.1145/3306346.3323009\">https://doi.org/10.1145/3306346.3323009</a>.","ama":"Kondapaneni I, Vevoda P, Grittmann P, Skrivan T, Slusallek P, Křivánek J. Optimal multiple importance sampling. <i>ACM Transactions on Graphics</i>. 2019;38(4). doi:<a href=\"https://doi.org/10.1145/3306346.3323009\">10.1145/3306346.3323009</a>","ieee":"I. Kondapaneni, P. Vevoda, P. Grittmann, T. Skrivan, P. Slusallek, and J. Křivánek, “Optimal multiple importance sampling,” <i>ACM Transactions on Graphics</i>, vol. 38, no. 4. ACM, 2019.","mla":"Kondapaneni, Ivo, et al. “Optimal Multiple Importance Sampling.” <i>ACM Transactions on Graphics</i>, vol. 38, no. 4, 37, ACM, 2019, doi:<a href=\"https://doi.org/10.1145/3306346.3323009\">10.1145/3306346.3323009</a>.","apa":"Kondapaneni, I., Vevoda, P., Grittmann, P., Skrivan, T., Slusallek, P., &#38; Křivánek, J. (2019). Optimal multiple importance sampling. <i>ACM Transactions on Graphics</i>. ACM. <a href=\"https://doi.org/10.1145/3306346.3323009\">https://doi.org/10.1145/3306346.3323009</a>","short":"I. Kondapaneni, P. Vevoda, P. Grittmann, T. Skrivan, P. Slusallek, J. Křivánek, ACM Transactions on Graphics 38 (2019)."},"_id":"7002","department":[{"_id":"ChWo"}],"scopus_import":"1","doi":"10.1145/3306346.3323009","date_published":"2019-07-01T00:00:00Z","quality_controlled":"1","oa_version":"None","article_type":"original","month":"07","article_processing_charge":"No","title":"Optimal multiple importance sampling","intvolume":"        38","volume":38,"isi":1,"year":"2019","type":"journal_article","date_updated":"2025-03-31T15:58:17Z","fulldoi":"https://doi.org/10.1145/3306346.3323009","date_created":"2019-11-12T13:05:40Z","publication_status":"published","publication":"ACM Transactions on Graphics","publication_identifier":{"issn":["0730-0301"]}},{"month":"11","article_processing_charge":"No","title":"MIS compensation: Optimizing sampling techniques in multiple importance sampling","doi":"10.1145/3355089.3356565","date_published":"2019-11-01T00:00:00Z","quality_controlled":"1","oa_version":"None","article_type":"original","year":"2019","type":"journal_article","date_updated":"2023-09-06T15:22:23Z","date_created":"2020-01-30T10:19:43Z","fulldoi":"https://doi.org/10.1145/3355089.3356565","publication_identifier":{"issn":["0730-0301"],"eissn":["1557-7368"]},"publication_status":"published","publication":"ACM Transactions on Graphics","intvolume":"        38","isi":1,"volume":38,"external_id":{"isi":["000498397300001"]},"abstract":[{"lang":"eng","text":"Multiple importance sampling (MIS) has become an indispensable tool in Monte Carlo rendering, widely accepted as a near-optimal solution for combining different sampling techniques. But an MIS combination, using the common balance or power heuristics, often results in an overly defensive estimator, leading to high variance. We show that by generalizing the MIS framework, variance can be substantially reduced. Specifically, we optimize one of the combined sampling techniques so as to decrease the overall variance of the resulting MIS estimator. We apply the approach to the computation of direct illumination due to an HDR environment map and to the computation of global illumination using a path guiding algorithm. The implementation can be as simple as subtracting a constant value from the tabulated sampling density done entirely in a preprocessing step. This produces a consistent noise reduction in all our tests with no negative influence on run time, no artifacts or bias, and no failure cases."}],"status":"public","day":"01","author":[{"full_name":"Karlík, Ondřej","last_name":"Karlík","first_name":"Ondřej"},{"last_name":"Šik","full_name":"Šik, Martin","first_name":"Martin"},{"last_name":"Vévoda","full_name":"Vévoda, Petr","first_name":"Petr"},{"last_name":"Skrivan","full_name":"Skrivan, Tomas","id":"486A5A46-F248-11E8-B48F-1D18A9856A87","first_name":"Tomas"},{"first_name":"Jaroslav","last_name":"Křivánek","full_name":"Křivánek, Jaroslav"}],"language":[{"iso":"eng"}],"publisher":"ACM","citation":{"ista":"Karlík O, Šik M, Vévoda P, Skrivan T, Křivánek J. 2019. MIS compensation: Optimizing sampling techniques in multiple importance sampling. ACM Transactions on Graphics. 38(6), 151.","chicago":"Karlík, Ondřej, Martin Šik, Petr Vévoda, Tomas Skrivan, and Jaroslav Křivánek. “MIS Compensation: Optimizing Sampling Techniques in Multiple Importance Sampling.” <i>ACM Transactions on Graphics</i>. ACM, 2019. <a href=\"https://doi.org/10.1145/3355089.3356565\">https://doi.org/10.1145/3355089.3356565</a>.","ama":"Karlík O, Šik M, Vévoda P, Skrivan T, Křivánek J. MIS compensation: Optimizing sampling techniques in multiple importance sampling. <i>ACM Transactions on Graphics</i>. 2019;38(6). doi:<a href=\"https://doi.org/10.1145/3355089.3356565\">10.1145/3355089.3356565</a>","mla":"Karlík, Ondřej, et al. “MIS Compensation: Optimizing Sampling Techniques in Multiple Importance Sampling.” <i>ACM Transactions on Graphics</i>, vol. 38, no. 6, 151, ACM, 2019, doi:<a href=\"https://doi.org/10.1145/3355089.3356565\">10.1145/3355089.3356565</a>.","ieee":"O. Karlík, M. Šik, P. Vévoda, T. Skrivan, and J. Křivánek, “MIS compensation: Optimizing sampling techniques in multiple importance sampling,” <i>ACM Transactions on Graphics</i>, vol. 38, no. 6. ACM, 2019.","short":"O. Karlík, M. Šik, P. Vévoda, T. Skrivan, J. Křivánek, ACM Transactions on Graphics 38 (2019).","apa":"Karlík, O., Šik, M., Vévoda, P., Skrivan, T., &#38; Křivánek, J. (2019). MIS compensation: Optimizing sampling techniques in multiple importance sampling. <i>ACM Transactions on Graphics</i>. ACM. <a href=\"https://doi.org/10.1145/3355089.3356565\">https://doi.org/10.1145/3355089.3356565</a>"},"scopus_import":"1","_id":"7418","department":[{"_id":"ChWo"}],"issue":"6","article_number":"151","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1"},{"doi":"10.1145/3197517.3201336","date_published":"2018-07-30T00:00:00Z","has_accepted_license":"1","oa_version":"Published Version","ddc":["000"],"tmp":{"name":"Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","short":"CC BY-NC-SA (4.0)","image":"/images/cc_by_nc_sa.png","legal_code_url":"https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode"},"quality_controlled":"1","oa":1,"month":"07","article_processing_charge":"No","title":"Water surface wavelets","intvolume":"        37","acknowledged_ssus":[{"_id":"ScienComp"}],"related_material":{"link":[{"url":"https://ist.ac.at/en/news/new-water-simulation-captures-small-details-even-in-large-scenes/","relation":"press_release","description":"News on IST Homepage"}]},"isi":1,"volume":37,"type":"journal_article","year":"2018","date_updated":"2024-10-22T09:58:20Z","publication":"ACM Transactions on Graphics","publist_id":"7789","publication_status":"published","file":[{"file_id":"5744","file_size":22185016,"checksum":"db75ebabe2ec432bf41389e614d6ef62","access_level":"open_access","date_created":"2018-12-18T09:59:23Z","date_updated":"2020-07-14T12:44:45Z","file_name":"2018_ACM_Jeschke.pdf","content_type":"application/pdf","creator":"dernst","relation":"main_file"}],"fulldoi":"https://doi.org/10.1145/3197517.3201336","date_created":"2018-12-11T11:44:48Z","status":"public","project":[{"call_identifier":"H2020","_id":"2533E772-B435-11E9-9278-68D0E5697425","name":"Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales","grant_number":"638176"},{"grant_number":"665385","name":"International IST Doctoral Program","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"}],"file_date_updated":"2020-07-14T12:44:45Z","day":"30","language":[{"iso":"eng"}],"author":[{"last_name":"Jeschke","id":"44D6411A-F248-11E8-B48F-1D18A9856A87","full_name":"Jeschke, Stefan","first_name":"Stefan"},{"last_name":"Skrivan","id":"486A5A46-F248-11E8-B48F-1D18A9856A87","full_name":"Skrivan, Tomas","first_name":"Tomas"},{"first_name":"Matthias","full_name":"Mueller Fischer, Matthias","last_name":"Mueller Fischer"},{"last_name":"Chentanez","full_name":"Chentanez, Nuttapong","first_name":"Nuttapong"},{"first_name":"Miles","full_name":"Macklin, Miles","last_name":"Macklin"},{"orcid":"0000-0001-6646-5546","first_name":"Christopher J","full_name":"Wojtan, Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","last_name":"Wojtan"}],"external_id":{"isi":["000448185000055"]},"abstract":[{"text":"The current state of the art in real-time two-dimensional water wave simulation requires developers to choose between efficient Fourier-based methods, which lack interactions with moving obstacles, and finite-difference or finite element methods, which handle environmental interactions but are significantly more expensive. This paper attempts to bridge this long-standing gap between complexity and performance, by proposing a new wave simulation method that can faithfully simulate wave interactions with moving obstacles in real time while simultaneously preserving minute details and accommodating very large simulation domains.\r\n\r\nPrevious methods for simulating 2D water waves directly compute the change in height of the water surface, a strategy which imposes limitations based on the CFL condition (fast moving waves require small time steps) and Nyquist's limit (small wave details require closely-spaced simulation variables). This paper proposes a novel wavelet transformation that discretizes the liquid motion in terms of amplitude-like functions that vary over space, frequency, and direction, effectively generalizing Fourier-based methods to handle local interactions. Because these new variables change much more slowly over space than the original water height function, our change of variables drastically reduces the limitations of the CFL condition and Nyquist limit, allowing us to simulate highly detailed water waves at very large visual resolutions. Our discretization is amenable to fast summation and easy to parallelize. We also present basic extensions like pre-computed wave paths and two-way solid fluid coupling. Finally, we argue that our discretization provides a convenient set of variables for artistic manipulation, which we illustrate with a novel wave-painting interface.","lang":"eng"}],"ec_funded":1,"alternative_title":["SIGGRAPH"],"issue":"4","user_id":"2EBD1598-F248-11E8-B48F-1D18A9856A87","article_number":"94","publisher":"ACM","citation":{"ista":"Jeschke S, Skrivan T, Mueller Fischer M, Chentanez N, Macklin M, Wojtan C. 2018. Water surface wavelets. ACM Transactions on Graphics. 37(4), 94.","chicago":"Jeschke, Stefan, Tomas Skrivan, Matthias Mueller Fischer, Nuttapong Chentanez, Miles Macklin, and Chris Wojtan. “Water Surface Wavelets.” <i>ACM Transactions on Graphics</i>. ACM, 2018. <a href=\"https://doi.org/10.1145/3197517.3201336\">https://doi.org/10.1145/3197517.3201336</a>.","ama":"Jeschke S, Skrivan T, Mueller Fischer M, Chentanez N, Macklin M, Wojtan C. Water surface wavelets. <i>ACM Transactions on Graphics</i>. 2018;37(4). doi:<a href=\"https://doi.org/10.1145/3197517.3201336\">10.1145/3197517.3201336</a>","ieee":"S. Jeschke, T. Skrivan, M. Mueller Fischer, N. Chentanez, M. Macklin, and C. Wojtan, “Water surface wavelets,” <i>ACM Transactions on Graphics</i>, vol. 37, no. 4. ACM, 2018.","mla":"Jeschke, Stefan, et al. “Water Surface Wavelets.” <i>ACM Transactions on Graphics</i>, vol. 37, no. 4, 94, ACM, 2018, doi:<a href=\"https://doi.org/10.1145/3197517.3201336\">10.1145/3197517.3201336</a>.","short":"S. Jeschke, T. Skrivan, M. Mueller Fischer, N. Chentanez, M. Macklin, C. Wojtan, ACM Transactions on Graphics 37 (2018).","apa":"Jeschke, S., Skrivan, T., Mueller Fischer, M., Chentanez, N., Macklin, M., &#38; Wojtan, C. (2018). Water surface wavelets. <i>ACM Transactions on Graphics</i>. ACM. <a href=\"https://doi.org/10.1145/3197517.3201336\">https://doi.org/10.1145/3197517.3201336</a>"},"_id":"134","scopus_import":"1","department":[{"_id":"ChWo"}]},{"abstract":[{"text":"The Fluid Implicit Particle method (FLIP) reduces numerical dissipation by combining particles with grids. To improve performance, the subsequent narrow band FLIP method (NB‐FLIP) uses a FLIP‐based fluid simulation only near the liquid surface and a traditional grid‐based fluid simulation away from the surface. This spatially‐limited FLIP simulation significantly reduces the number of particles and alleviates a computational bottleneck. In this paper, we extend the NB‐FLIP idea even further, by allowing a simulation to transition between a FLIP‐like fluid simulation and a grid‐based simulation in arbitrary locations, not just near the surface. This approach leads to even more savings in memory and computation, because we can concentrate the particles only in areas where they are needed. More importantly, this new method allows us to seamlessly transition to smooth implicit surface geometry wherever the particle‐based simulation is unnecessary. Consequently, our method leads to a practical algorithm for avoiding the noisy surface artifacts associated with particle‐based liquid simulations, while simultaneously maintaining the benefits of a FLIP simulation in regions of dynamic motion.","lang":"eng"}],"external_id":{"isi":["000434085600016"]},"file_date_updated":"2020-10-08T08:38:23Z","day":"22","language":[{"iso":"eng"}],"author":[{"last_name":"Sato","full_name":"Sato, Takahiro","first_name":"Takahiro"},{"first_name":"Christopher J","orcid":"0000-0001-6646-5546","full_name":"Wojtan, Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","last_name":"Wojtan"},{"full_name":"Thuerey, Nils","last_name":"Thuerey","first_name":"Nils"},{"first_name":"Takeo","last_name":"Igarashi","full_name":"Igarashi, Takeo"},{"first_name":"Ryoichi","full_name":"Ando, Ryoichi","last_name":"Ando"}],"status":"public","project":[{"call_identifier":"H2020","name":"Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales","_id":"2533E772-B435-11E9-9278-68D0E5697425","grant_number":"638176"}],"citation":{"ista":"Sato T, Wojtan C, Thuerey N, Igarashi T, Ando R. 2018. Extended narrow band FLIP for liquid simulations. Computer Graphics Forum. 37(2), 169–177.","chicago":"Sato, Takahiro, Chris Wojtan, Nils Thuerey, Takeo Igarashi, and Ryoichi Ando. “Extended Narrow Band FLIP for Liquid Simulations.” <i>Computer Graphics Forum</i>. Wiley, 2018. <a href=\"https://doi.org/10.1111/cgf.13351\">https://doi.org/10.1111/cgf.13351</a>.","mla":"Sato, Takahiro, et al. “Extended Narrow Band FLIP for Liquid Simulations.” <i>Computer Graphics Forum</i>, vol. 37, no. 2, Wiley, 2018, pp. 169–77, doi:<a href=\"https://doi.org/10.1111/cgf.13351\">10.1111/cgf.13351</a>.","ieee":"T. Sato, C. Wojtan, N. Thuerey, T. Igarashi, and R. Ando, “Extended narrow band FLIP for liquid simulations,” <i>Computer Graphics Forum</i>, vol. 37, no. 2. Wiley, pp. 169–177, 2018.","ama":"Sato T, Wojtan C, Thuerey N, Igarashi T, Ando R. Extended narrow band FLIP for liquid simulations. <i>Computer Graphics Forum</i>. 2018;37(2):169-177. doi:<a href=\"https://doi.org/10.1111/cgf.13351\">10.1111/cgf.13351</a>","apa":"Sato, T., Wojtan, C., Thuerey, N., Igarashi, T., &#38; Ando, R. (2018). Extended narrow band FLIP for liquid simulations. <i>Computer Graphics Forum</i>. Wiley. <a href=\"https://doi.org/10.1111/cgf.13351\">https://doi.org/10.1111/cgf.13351</a>","short":"T. Sato, C. Wojtan, N. Thuerey, T. Igarashi, R. Ando, Computer Graphics Forum 37 (2018) 169–177."},"_id":"135","scopus_import":"1","department":[{"_id":"ChWo"}],"publisher":"Wiley","issue":"2","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","ec_funded":1,"alternative_title":["Eurographics"],"article_processing_charge":"No","title":"Extended narrow band FLIP for liquid simulations","oa":1,"month":"05","page":"169 - 177","has_accepted_license":"1","article_type":"original","oa_version":"Submitted Version","ddc":["006"],"quality_controlled":"1","doi":"10.1111/cgf.13351","date_published":"2018-05-22T00:00:00Z","date_updated":"2024-10-22T09:58:20Z","publication":"Computer Graphics Forum","publication_status":"published","publication_identifier":{"issn":["0167-7055"]},"file":[{"relation":"main_file","creator":"wojtan","content_type":"application/pdf","file_name":"exnbflip.pdf","date_updated":"2020-10-08T08:38:23Z","success":1,"date_created":"2020-10-08T08:38:23Z","access_level":"open_access","checksum":"8edb90da8a72395eb5d970580e0925b6","file_size":54309947,"file_id":"8627"}],"fulldoi":"https://doi.org/10.1111/cgf.13351","date_created":"2018-12-11T11:44:49Z","type":"journal_article","year":"2018","volume":37,"isi":1,"intvolume":"        37"}]