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Also includes pre-built binaries of the HyENA library, but not sources - please contact the HyENA authors to obtain these sources if required (https://mech.tugraz.at/hyena)"}],"license":"https://creativecommons.org/licenses/by-sa/4.0/","ec_funded":1,"related_material":{"record":[{"id":"839","status":"public","relation":"research_paper"}]},"file":[{"file_name":"IST-2017-73-v1+1_FractureRB_v1.1_2017_07_20_final_public.zip","date_created":"2018-12-12T13:02:57Z","creator":"system","file_size":199353471,"date_updated":"2020-07-14T12:47:04Z","checksum":"2323a755842a3399cbc47d76545fc9a0","file_id":"5615","relation":"main_file","access_level":"open_access","content_type":"application/zip"}],"datarep_id":"73","project":[{"call_identifier":"H2020","_id":"2533E772-B435-11E9-9278-68D0E5697425","name":"Efficient Simulation of Natural Phenomena at Extremely Large Scales","grant_number":"638176"}],"title":"Source codes: Brittle fracture simulation with boundary elements for computer graphics","article_processing_charge":"No","author":[{"id":"357A6A66-F248-11E8-B48F-1D18A9856A87","first_name":"David","last_name":"Hahn","full_name":"Hahn, David"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"chicago":"Hahn, David. “Source Codes: Brittle Fracture Simulation with Boundary Elements for Computer Graphics.” Institute of Science and Technology Austria, 2017. https://doi.org/10.15479/AT:ISTA:73.","ista":"Hahn D. 2017. Source codes: Brittle fracture simulation with boundary elements for computer graphics, Institute of Science and Technology Austria, 10.15479/AT:ISTA:73.","mla":"Hahn, David. Source Codes: Brittle Fracture Simulation with Boundary Elements for Computer Graphics. Institute of Science and Technology Austria, 2017, doi:10.15479/AT:ISTA:73.","ieee":"D. Hahn, “Source codes: Brittle fracture simulation with boundary elements for computer graphics.” Institute of Science and Technology Austria, 2017.","short":"D. Hahn, (2017).","ama":"Hahn D. Source codes: Brittle fracture simulation with boundary elements for computer graphics. 2017. doi:10.15479/AT:ISTA:73","apa":"Hahn, D. (2017). Source codes: Brittle fracture simulation with boundary elements for computer graphics. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:73"},"oa":1,"publisher":"Institute of Science and Technology Austria","date_created":"2018-12-12T12:31:35Z","doi":"10.15479/AT:ISTA:73","date_published":"2017-08-16T00:00:00Z","day":"16","year":"2017","has_accepted_license":"1"},{"date_created":"2018-12-11T11:50:20Z","doi":"10.1145/2994258.2994261","date_published":"2016-10-10T00:00:00Z","publication":"Proceedings of the 9th International Conference on Motion in Games ","day":"10","year":"2016","has_accepted_license":"1","oa":1,"publisher":"ACM","quality_controlled":"1","acknowledgement":"This work was partly supported by the starting grant BigSplash, as well as the advanced grant EXPRESSIVE from the European Research Council (ERC-2014-StG 638176 , and ERC-2011-ADG 20110209).","title":"Space-time sculpting of liquid animation","article_processing_charge":"No","author":[{"last_name":"Manteaux","full_name":"Manteaux, Pierre","first_name":"Pierre"},{"full_name":"Vimont, Ulysse","last_name":"Vimont","first_name":"Ulysse"},{"id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","first_name":"Christopher J","orcid":"0000-0001-6646-5546","full_name":"Wojtan, Christopher J","last_name":"Wojtan"},{"last_name":"Rohmer","full_name":"Rohmer, Damien","first_name":"Damien"},{"full_name":"Cani, Marie","last_name":"Cani","first_name":"Marie"}],"publist_id":"6222","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"mla":"Manteaux, Pierre, et al. “Space-Time Sculpting of Liquid Animation.” Proceedings of the 9th International Conference on Motion in Games , 2994261, ACM, 2016, doi:10.1145/2994258.2994261.","short":"P. Manteaux, U. Vimont, C. Wojtan, D. Rohmer, M. Cani, in:, Proceedings of the 9th International Conference on Motion in Games , ACM, 2016.","ieee":"P. Manteaux, U. Vimont, C. Wojtan, D. Rohmer, and M. Cani, “Space-time sculpting of liquid animation,” in Proceedings of the 9th International Conference on Motion in Games , San Francisco, CA, USA, 2016.","ama":"Manteaux P, Vimont U, Wojtan C, Rohmer D, Cani M. Space-time sculpting of liquid animation. In: Proceedings of the 9th International Conference on Motion in Games . ACM; 2016. doi:10.1145/2994258.2994261","apa":"Manteaux, P., Vimont, U., Wojtan, C., Rohmer, D., & Cani, M. (2016). Space-time sculpting of liquid animation. In Proceedings of the 9th International Conference on Motion in Games . San Francisco, CA, USA: ACM. https://doi.org/10.1145/2994258.2994261","chicago":"Manteaux, Pierre, Ulysse Vimont, Chris Wojtan, Damien Rohmer, and Marie Cani. “Space-Time Sculpting of Liquid Animation.” In Proceedings of the 9th International Conference on Motion in Games . ACM, 2016. https://doi.org/10.1145/2994258.2994261.","ista":"Manteaux P, Vimont U, Wojtan C, Rohmer D, Cani M. 2016. Space-time sculpting of liquid animation. Proceedings of the 9th International Conference on Motion in Games . MIG: Motion in Games, 2994261."},"project":[{"name":"Efficient Simulation of Natural Phenomena at Extremely Large Scales","grant_number":"638176","_id":"2533E772-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"}],"article_number":"2994261","ec_funded":1,"language":[{"iso":"eng"}],"publication_status":"published","month":"10","main_file_link":[{"url":"https://hal.inria.fr/hal-01367181","open_access":"1"}],"scopus_import":"1","oa_version":"Submitted Version","abstract":[{"text":"We propose an interactive sculpting system for seamlessly editing pre-computed animations of liquid, without the need for any resimulation. The input is a sequence of meshes without correspondences representing the liquid surface over time. Our method enables the efficient selection of consistent space-time parts of this animation, such as moving waves or droplets, which we call space-time features. Once selected, a feature can be copied, edited, or duplicated and then pasted back anywhere in space and time in the same or in another liquid animation sequence. Our method circumvents tedious user interactions by automatically computing the spatial and temporal ranges of the selected feature. We also provide space-time shape editing tools for non-uniform scaling, rotation, trajectory changes, and temporal editing to locally speed up or slow down motion. Using our tools, the user can edit and progressively refine any input simulation result, possibly using a library of precomputed space-time features extracted from other animations. In contrast to the trial-and-error loop usually required to edit animation results through the tuning of indirect simulation parameters, our method gives the user full control over the edited space-time behaviors. © 2016 Copyright held by the owner/author(s).","lang":"eng"}],"department":[{"_id":"ChWo"}],"ddc":["004"],"date_updated":"2023-02-21T09:49:49Z","status":"public","conference":{"name":"MIG: Motion in Games","start_date":"2016-10-10","end_date":"2016-10-12","location":"San Francisco, CA, USA"},"type":"conference","_id":"1136"},{"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","date_updated":"2021-01-12T06:48:35Z","citation":{"mla":"Łazarz, Radosław, et al. “Hierarchic Genetic Strategy with Maturing as a Generic Tool for Multiobjective Optimization.” Journal of Computational Science, vol. 17, no. 1, Elsevier, 2016, pp. 249–60, doi:10.1016/j.jocs.2016.03.004.","ieee":"R. Łazarz, M. Idzik, K. Gądek, and E. P. 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Elsevier. https://doi.org/10.1016/j.jocs.2016.03.004","chicago":"Łazarz, Radosław, Michał Idzik, Konrad Gądek, and Ewa P Gajda-Zagorska. “Hierarchic Genetic Strategy with Maturing as a Generic Tool for Multiobjective Optimization.” Journal of Computational Science. Elsevier, 2016. https://doi.org/10.1016/j.jocs.2016.03.004.","ista":"Łazarz R, Idzik M, Gądek K, Gajda-Zagorska EP. 2016. Hierarchic genetic strategy with maturing as a generic tool for multiobjective optimization. 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DEC-2012/05/N/ST6/03433 and DEC-2011/03/B/ST6/01393. Radosław Łazarz was supported by Polish National Science Centre grant no. DEC-2013/10/M/ST6/00531.","oa_version":"None","abstract":[{"text":"In this paper we introduce the Multiobjective Optimization Hierarchic Genetic Strategy with maturing (MO-mHGS), a meta-algorithm that performs evolutionary optimization in a hierarchy of populations. The maturing mechanism improves growth and reduces redundancy. The performance of MO-mHGS with selected state-of-the-art multiobjective evolutionary algorithms as internal algorithms is analysed on benchmark problems and their modifications for which single fitness evaluation time depends on the solution accuracy. We compare the proposed algorithm with the Island Model Genetic Algorithm as well as with single-deme methods, and discuss the impact of internal algorithms on the MO-mHGS meta-algorithm. © 2016 Elsevier B.V.","lang":"eng"}],"intvolume":" 17","month":"11","publisher":"Elsevier","quality_controlled":"1","scopus_import":1},{"doi":"10.1145/2897824.2925963","date_published":"2016-07-11T00:00:00Z","date_created":"2018-12-11T11:51:35Z","day":"11","has_accepted_license":"1","year":"2016","publisher":"ACM","quality_controlled":"1","oa":1,"acknowledgement":"We thank the IST Austria Visual Computing group for helpful feedback throughout the project. 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Wojtan, “Generalized non-reflecting boundaries for fluid re-simulation,” presented at the ACM SIGGRAPH, Anaheim, CA, USA, 2016, vol. 35, no. 4.","short":"M. Bojsen-Hansen, C. Wojtan, in:, ACM, 2016.","mla":"Bojsen-Hansen, Morten, and Chris Wojtan. Generalized Non-Reflecting Boundaries for Fluid Re-Simulation. Vol. 35, no. 4, 96, ACM, 2016, doi:10.1145/2897824.2925963.","ista":"Bojsen-Hansen M, Wojtan C. 2016. Generalized non-reflecting boundaries for fluid re-simulation. ACM SIGGRAPH, ACM Transactions on Graphics, vol. 35, 96.","chicago":"Bojsen-Hansen, Morten, and Chris Wojtan. “Generalized Non-Reflecting Boundaries for Fluid Re-Simulation,” Vol. 35. ACM, 2016. https://doi.org/10.1145/2897824.2925963."},"project":[{"grant_number":"638176","name":"Efficient Simulation of Natural Phenomena at Extremely Large Scales","call_identifier":"H2020","_id":"2533E772-B435-11E9-9278-68D0E5697425"}],"article_number":"96","volume":35,"issue":"4","license":"https://creativecommons.org/licenses/by/4.0/","ec_funded":1,"file":[{"file_name":"IST-2016-631-v1+2_a96-bojsen-hansen.pdf","date_created":"2018-12-12T10:13:00Z","creator":"system","file_size":12422760,"date_updated":"2020-07-14T12:44:47Z","checksum":"140b5532f0a2a006a0149cab7c73c17c","file_id":"4981","relation":"main_file","access_level":"open_access","content_type":"application/pdf"}],"language":[{"iso":"eng"}],"publication_status":"published","month":"07","intvolume":" 35","alternative_title":["ACM Transactions on Graphics"],"oa_version":"Published Version","abstract":[{"lang":"eng","text":"When aiming to seamlessly integrate a fluid simulation into a larger scenario (like an open ocean), careful attention must be paid to boundary conditions. In particular, one must implement special "non-reflecting" boundary conditions, which dissipate out-going waves as they exit the simulation. Unfortunately, the state of the art in non-reflecting boundary conditions (perfectly-matched layers, or PMLs) only permits trivially simple inflow/outflow conditions, so there is no reliable way to integrate a fluid simulation into a more complicated environment like a stormy ocean or a turbulent river. This paper introduces the first method for combining nonreflecting boundary conditions based on PMLs with inflow/outflow boundary conditions that vary arbitrarily throughout space and time. Our algorithm is a generalization of stateof- the-art mean-flow boundary conditions in the computational fluid dynamics literature, and it allows for seamless integration of a fluid simulation into much more complicated environments. Our method also opens the door for previously-unseen postprocess effects like retroactively changing the location of solid obstacles, and locally increasing the visual detail of a pre-existing simulation."}],"acknowledged_ssus":[{"_id":"ScienComp"}],"department":[{"_id":"ChWo"}],"file_date_updated":"2020-07-14T12:44:47Z","ddc":["000"],"date_updated":"2023-02-21T10:36:12Z","status":"public","pubrep_id":"631","type":"conference","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"conference":{"start_date":"2016-07-24","end_date":"2016-07-28","location":"Anaheim, CA, USA","name":"ACM SIGGRAPH"},"_id":"1363"},{"publisher":"ACM","quality_controlled":"1","oa":1,"date_published":"2016-07-11T00:00:00Z","doi":"10.1145/2897824.2925899","date_created":"2018-12-11T11:51:35Z","day":"11","has_accepted_license":"1","year":"2016","project":[{"call_identifier":"H2020","_id":"2533E772-B435-11E9-9278-68D0E5697425","grant_number":"638176","name":"Efficient Simulation of Natural Phenomena at Extremely Large Scales"}],"article_number":"a78","title":"Surface only liquids","publist_id":"5881","author":[{"first_name":"Fang","full_name":"Da, Fang","last_name":"Da"},{"id":"357A6A66-F248-11E8-B48F-1D18A9856A87","first_name":"David","full_name":"Hahn, David","last_name":"Hahn"},{"first_name":"Christopher","full_name":"Batty, Christopher","last_name":"Batty"},{"id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","first_name":"Christopher J","last_name":"Wojtan","full_name":"Wojtan, Christopher J","orcid":"0000-0001-6646-5546"},{"first_name":"Eitan","last_name":"Grinspun","full_name":"Grinspun, Eitan"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","citation":{"ista":"Da F, Hahn D, Batty C, Wojtan C, Grinspun E. 2016. Surface only liquids. ACM SIGGRAPH, ACM Transactions on Graphics, vol. 35, a78.","chicago":"Da, Fang, David Hahn, Christopher Batty, Chris Wojtan, and Eitan Grinspun. “Surface Only Liquids,” Vol. 35. ACM, 2016. https://doi.org/10.1145/2897824.2925899.","apa":"Da, F., Hahn, D., Batty, C., Wojtan, C., & Grinspun, E. (2016). Surface only liquids (Vol. 35). Presented at the ACM SIGGRAPH, Anaheim, CA, USA: ACM. https://doi.org/10.1145/2897824.2925899","ama":"Da F, Hahn D, Batty C, Wojtan C, Grinspun E. Surface only liquids. In: Vol 35. ACM; 2016. doi:10.1145/2897824.2925899","ieee":"F. Da, D. Hahn, C. Batty, C. Wojtan, and E. Grinspun, “Surface only liquids,” presented at the ACM SIGGRAPH, Anaheim, CA, USA, 2016, vol. 35, no. 4.","short":"F. Da, D. Hahn, C. Batty, C. Wojtan, E. Grinspun, in:, ACM, 2016.","mla":"Da, Fang, et al. Surface Only Liquids. Vol. 35, no. 4, a78, ACM, 2016, doi:10.1145/2897824.2925899."},"month":"07","intvolume":" 35","scopus_import":1,"alternative_title":["ACM Transactions on Graphics"],"oa_version":"Published Version","abstract":[{"text":"We propose a novel surface-only technique for simulating incompressible, inviscid and uniform-density liquids with surface tension in three dimensions. The liquid surface is captured by a triangle mesh on which a Lagrangian velocity field is stored. Because advection of the velocity field may violate the incompressibility condition, we devise an orthogonal projection technique to remove the divergence while requiring the evaluation of only two boundary integrals. The forces of surface tension, gravity, and solid contact are all treated by a boundary element solve, allowing us to perform detailed simulations of a wide range of liquid phenomena, including waterbells, droplet and jet collisions, fluid chains, and crown splashes.","lang":"eng"}],"issue":"4","volume":35,"ec_funded":1,"file":[{"checksum":"6d662893bd447d4f575b4961a2247811","file_id":"4660","content_type":"application/pdf","relation":"main_file","access_level":"open_access","file_name":"IST-2016-637-v1+1_2016_Da_SOL.pdf","date_created":"2018-12-12T10:08:01Z","file_size":10561865,"date_updated":"2020-07-14T12:44:46Z","creator":"system"}],"language":[{"iso":"eng"}],"publication_status":"published","status":"public","pubrep_id":"637","type":"conference","conference":{"name":"ACM SIGGRAPH","end_date":"2016-07-28","location":"Anaheim, CA, USA","start_date":"2016-07-24"},"_id":"1361","department":[{"_id":"ChWo"}],"file_date_updated":"2020-07-14T12:44:46Z","ddc":["000"],"date_updated":"2023-02-21T10:36:07Z"},{"year":"2016","has_accepted_license":"1","publication":"Computer Graphics Forum","day":"27","page":"233 - 242","date_created":"2018-12-11T11:51:52Z","doi":"10.1111/cgf.12826","date_published":"2016-05-27T00:00:00Z","acknowledgement":"This research was supported by NSERC (RGPIN-04360-2014) and IST Austria. ","oa":1,"publisher":"Wiley-Blackwell","quality_controlled":"1","citation":{"ieee":"R. Goldade, C. Batty, and C. Wojtan, “A practical method for high-resolution embedded liquid surfaces,” Computer Graphics Forum, vol. 35, no. 2. Wiley-Blackwell, pp. 233–242, 2016.","short":"R. Goldade, C. Batty, C. Wojtan, Computer Graphics Forum 35 (2016) 233–242.","apa":"Goldade, R., Batty, C., & Wojtan, C. (2016). A practical method for high-resolution embedded liquid surfaces. Computer Graphics Forum. Wiley-Blackwell. https://doi.org/10.1111/cgf.12826","ama":"Goldade R, Batty C, Wojtan C. A practical method for high-resolution embedded liquid surfaces. Computer Graphics Forum. 2016;35(2):233-242. doi:10.1111/cgf.12826","mla":"Goldade, Ryan, et al. “A Practical Method for High-Resolution Embedded Liquid Surfaces.” Computer Graphics Forum, vol. 35, no. 2, Wiley-Blackwell, 2016, pp. 233–42, doi:10.1111/cgf.12826.","ista":"Goldade R, Batty C, Wojtan C. 2016. A practical method for high-resolution embedded liquid surfaces. Computer Graphics Forum. 35(2), 233–242.","chicago":"Goldade, Ryan, Christopher Batty, and Chris Wojtan. “A Practical Method for High-Resolution Embedded Liquid Surfaces.” Computer Graphics Forum. Wiley-Blackwell, 2016. https://doi.org/10.1111/cgf.12826."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","author":[{"full_name":"Goldade, Ryan","last_name":"Goldade","first_name":"Ryan"},{"full_name":"Batty, Christopher","last_name":"Batty","first_name":"Christopher"},{"orcid":"0000-0001-6646-5546","full_name":"Wojtan, Christopher J","last_name":"Wojtan","first_name":"Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87"}],"publist_id":"5795","title":"A practical method for high-resolution embedded liquid surfaces","project":[{"name":"Efficient Simulation of Natural Phenomena at Extremely Large Scales","grant_number":"638176","call_identifier":"H2020","_id":"2533E772-B435-11E9-9278-68D0E5697425"}],"publication_status":"published","language":[{"iso":"eng"}],"file":[{"file_size":15873858,"date_updated":"2020-07-14T12:44:53Z","creator":"system","file_name":"IST-2016-612-v1+2_Wojtan_APracticalMethod_PostPrint_2016.pdf","date_created":"2018-12-12T10:13:18Z","content_type":"application/pdf","relation":"main_file","access_level":"open_access","checksum":"8e61387ee2e3bd0e776fbe301629bfd9","file_id":"5000"}],"ec_funded":1,"issue":"2","volume":35,"abstract":[{"lang":"eng","text":"Combining high-resolution level set surface tracking with lower resolution physics is an inexpensive method for achieving highly detailed liquid animations. Unfortunately, the inherent resolution mismatch introduces several types of disturbing visual artifacts. We identify the primary sources of these artifacts and present simple, efficient, and practical solutions to address them. First, we propose an unconditionally stable filtering method that selectively removes sub-grid surface artifacts not seen by the fluid physics, while preserving fine detail in dynamic splashing regions. It provides comparable results to recent error-correction techniques at lower cost, without substepping, and with better scaling behavior. Second, we show how a modified narrow-band scheme can ensure accurate free surface boundary conditions in the presence of large resolution mismatches. Our scheme preserves the efficiency of the narrow-band methodology, while eliminating objectionable stairstep artifacts observed in prior work. Third, we demonstrate that the use of linear interpolation of velocity during advection of the high-resolution level set surface is responsible for visible grid-aligned kinks; we therefore advocate higher-order velocity interpolation, and show that it dramatically reduces this artifact. While these three contributions are orthogonal, our results demonstrate that taken together they efficiently address the dominant sources of visual artifacts arising with high-resolution embedded liquid surfaces; the proposed approach offers improved visual quality, a straightforward implementation, and substantially greater scalability than competing methods."}],"oa_version":"Submitted Version","scopus_import":1,"intvolume":" 35","month":"05","date_updated":"2023-02-21T10:38:30Z","ddc":["000"],"department":[{"_id":"ChWo"}],"file_date_updated":"2020-07-14T12:44:53Z","_id":"1412","type":"journal_article","pubrep_id":"612","status":"public"},{"date_created":"2018-12-11T11:51:53Z","date_published":"2016-05-01T00:00:00Z","volume":35,"issue":"2","doi":"10.1111/cgf.12812","page":"71 - 79","publication":"Computer Graphics Forum","language":[{"iso":"eng"}],"day":"01","year":"2016","publication_status":"published","intvolume":" 35","month":"05","scopus_import":1,"publisher":"Wiley-Blackwell","quality_controlled":"1","oa_version":"None","abstract":[{"text":"This paper generalizes the well-known Diffusion Curves Images (DCI), which are composed of a set of Bezier curves with colors specified on either side. These colors are diffused as Laplace functions over the image domain, which results in smooth color gradients interrupted by the Bezier curves. Our new formulation allows for more color control away from the boundary, providing a similar expressive power as recent Bilaplace image models without introducing associated issues and computational costs. The new model is based on a special Laplace function blending and a new edge blur formulation. We demonstrate that given some user-defined boundary curves over an input raster image, fitting colors and edge blur from the image to the new model and subsequent editing and animation is equally convenient as with DCIs. Numerous examples and comparisons to DCIs are presented.","lang":"eng"}],"department":[{"_id":"ChWo"}],"title":"Generalized diffusion curves: An improved vector representation for smooth-shaded images","publist_id":"5794","author":[{"last_name":"Jeschke","full_name":"Jeschke, Stefan","first_name":"Stefan","id":"44D6411A-F248-11E8-B48F-1D18A9856A87"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","date_updated":"2021-01-12T06:50:34Z","citation":{"chicago":"Jeschke, Stefan. “Generalized Diffusion Curves: An Improved Vector Representation for Smooth-Shaded Images.” Computer Graphics Forum. Wiley-Blackwell, 2016. https://doi.org/10.1111/cgf.12812.","ista":"Jeschke S. 2016. Generalized diffusion curves: An improved vector representation for smooth-shaded images. Computer Graphics Forum. 35(2), 71–79.","mla":"Jeschke, Stefan. “Generalized Diffusion Curves: An Improved Vector Representation for Smooth-Shaded Images.” Computer Graphics Forum, vol. 35, no. 2, Wiley-Blackwell, 2016, pp. 71–79, doi:10.1111/cgf.12812.","ieee":"S. Jeschke, “Generalized diffusion curves: An improved vector representation for smooth-shaded images,” Computer Graphics Forum, vol. 35, no. 2. Wiley-Blackwell, pp. 71–79, 2016.","short":"S. Jeschke, Computer Graphics Forum 35 (2016) 71–79.","apa":"Jeschke, S. (2016). Generalized diffusion curves: An improved vector representation for smooth-shaded images. Computer Graphics Forum. Wiley-Blackwell. https://doi.org/10.1111/cgf.12812","ama":"Jeschke S. Generalized diffusion curves: An improved vector representation for smooth-shaded images. Computer Graphics Forum. 2016;35(2):71-79. doi:10.1111/cgf.12812"},"status":"public","project":[{"grant_number":"P 24352-N23","name":"Deep Pictures: Creating Visual and Haptic Vector Images","_id":"25357BD2-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"}],"type":"journal_article","_id":"1413"},{"status":"public","pubrep_id":"611","type":"journal_article","_id":"1415","department":[{"_id":"ChWo"}],"file_date_updated":"2020-07-14T12:44:53Z","ddc":["000"],"date_updated":"2023-02-21T10:38:38Z","month":"05","intvolume":" 35","scopus_import":1,"oa_version":"Submitted Version","abstract":[{"lang":"eng","text":"The Fluid Implicit Particle method (FLIP) for liquid simulations uses particles to reduce numerical dissipation and provide important visual cues for events like complex splashes and small-scale features near the liquid surface. Unfortunately, FLIP simulations can be computationally expensive, because they require a dense sampling of particles to fill the entire liquid volume. Furthermore, the vast majority of these FLIP particles contribute nothing to the fluid's visual appearance, especially for larger volumes of liquid. We present a method that only uses FLIP particles within a narrow band of the liquid surface, while efficiently representing the remaining inner volume on a regular grid. We show that a naïve realization of this idea introduces unstable and uncontrollable energy fluctuations, and we propose a novel coupling scheme between FLIP particles and regular grid which overcomes this problem. Our method drastically reduces the particle count and simulation times while yielding results that are nearly indistinguishable from regular FLIP simulations. Our approach is easy to integrate into any existing FLIP implementation."}],"volume":35,"issue":"2","file":[{"creator":"system","file_size":5938324,"date_updated":"2020-07-14T12:44:53Z","file_name":"IST-2016-611-v1+3_CW_nbflip_postprint_2016.pdf","date_created":"2018-12-12T10:12:22Z","relation":"main_file","access_level":"open_access","content_type":"application/pdf","file_id":"4940","checksum":"984afbe510ed48019025dff1dcc7baad"}],"language":[{"iso":"eng"}],"publication_status":"published","title":"Narrow band FLIP for liquid simulations","publist_id":"5793","author":[{"first_name":"Florian","last_name":"Ferstl","full_name":"Ferstl, Florian"},{"first_name":"Ryoichi","last_name":"Ando","full_name":"Ando, Ryoichi"},{"full_name":"Wojtan, Christopher J","orcid":"0000-0001-6646-5546","last_name":"Wojtan","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","first_name":"Christopher J"},{"last_name":"Westermann","full_name":"Westermann, Rüdiger","first_name":"Rüdiger"},{"first_name":"Nils","last_name":"Thuerey","full_name":"Thuerey, Nils"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","citation":{"chicago":"Ferstl, Florian, Ryoichi Ando, Chris Wojtan, Rüdiger Westermann, and Nils Thuerey. “Narrow Band FLIP for Liquid Simulations.” Computer Graphics Forum. Wiley-Blackwell, 2016. https://doi.org/10.1111/cgf.12825.","ista":"Ferstl F, Ando R, Wojtan C, Westermann R, Thuerey N. 2016. Narrow band FLIP for liquid simulations. Computer Graphics Forum. 35(2), 225–232.","mla":"Ferstl, Florian, et al. “Narrow Band FLIP for Liquid Simulations.” Computer Graphics Forum, vol. 35, no. 2, Wiley-Blackwell, 2016, pp. 225–32, doi:10.1111/cgf.12825.","short":"F. Ferstl, R. Ando, C. Wojtan, R. Westermann, N. Thuerey, Computer Graphics Forum 35 (2016) 225–232.","ieee":"F. Ferstl, R. Ando, C. Wojtan, R. Westermann, and N. Thuerey, “Narrow band FLIP for liquid simulations,” Computer Graphics Forum, vol. 35, no. 2. Wiley-Blackwell, pp. 225–232, 2016.","apa":"Ferstl, F., Ando, R., Wojtan, C., Westermann, R., & Thuerey, N. (2016). Narrow band FLIP for liquid simulations. Computer Graphics Forum. Wiley-Blackwell. https://doi.org/10.1111/cgf.12825","ama":"Ferstl F, Ando R, Wojtan C, Westermann R, Thuerey N. Narrow band FLIP for liquid simulations. Computer Graphics Forum. 2016;35(2):225-232. doi:10.1111/cgf.12825"},"publisher":"Wiley-Blackwell","quality_controlled":"1","oa":1,"doi":"10.1111/cgf.12825","date_published":"2016-05-01T00:00:00Z","date_created":"2018-12-11T11:51:53Z","page":"225 - 232","day":"01","publication":"Computer Graphics Forum","has_accepted_license":"1","year":"2016"},{"alternative_title":["ACM Transactions on Graphics"],"month":"07","intvolume":" 35","abstract":[{"lang":"eng","text":"We present a boundary element based method for fast simulation of brittle fracture. By introducing simplifying assumptions that allow us to quickly estimate stress intensities and opening displacements during crack propagation, we build a fracture algorithm where the cost of each time step scales linearly with the length of the crackfront. The transition from a full boundary element method to our faster variant is possible at the beginning of any time step. This allows us to build a hybrid method, which uses the expensive but more accurate BEM while the number of degrees of freedom is low, and uses the fast method once that number exceeds a given threshold as the crack geometry becomes more complicated. Furthermore, we integrate this fracture simulation with a standard rigid-body solver. Our rigid-body coupling solves a Neumann boundary value problem by carefully separating translational, rotational and deformational components of the collision forces and then applying a Tikhonov regularizer to the resulting linear system. We show that our method produces physically reasonable results in standard test cases and is capable of dealing with complex scenes faster than previous finite- or boundary element approaches."}],"oa_version":"Published Version","volume":35,"related_material":{"record":[{"id":"839","status":"public","relation":"dissertation_contains"}]},"issue":"4","ec_funded":1,"publication_status":"published","file":[{"date_updated":"2020-07-14T12:44:46Z","file_size":12453704,"creator":"system","date_created":"2018-12-12T10:15:04Z","file_name":"IST-2016-632-v1+2_a104-hahn.pdf","content_type":"application/pdf","access_level":"open_access","relation":"main_file","checksum":"943712d9c9dc8bb5048d4adc561d7d38","file_id":"5121"}],"language":[{"iso":"eng"}],"type":"conference","conference":{"location":"Anaheim, CA, USA","end_date":"2016-07-28","start_date":"2016-07-24","name":"ACM SIGGRAPH"},"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"status":"public","pubrep_id":"632","_id":"1362","file_date_updated":"2020-07-14T12:44:46Z","department":[{"_id":"ChWo"}],"date_updated":"2023-09-07T12:02:56Z","ddc":["000"],"publisher":"ACM","quality_controlled":"1","oa":1,"doi":"10.1145/2897824.2925902","date_published":"2016-07-01T00:00:00Z","date_created":"2018-12-11T11:51:35Z","has_accepted_license":"1","year":"2016","day":"01","project":[{"name":"Efficient Simulation of Natural Phenomena at Extremely Large Scales","grant_number":"638176","_id":"2533E772-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"}],"article_number":"104","publist_id":"5880","author":[{"last_name":"Hahn","full_name":"Hahn, David","id":"357A6A66-F248-11E8-B48F-1D18A9856A87","first_name":"David"},{"full_name":"Wojtan, Christopher J","orcid":"0000-0001-6646-5546","last_name":"Wojtan","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","first_name":"Christopher J"}],"title":"Fast approximations for boundary element based brittle fracture simulation","citation":{"short":"D. Hahn, C. Wojtan, in:, ACM, 2016.","ieee":"D. Hahn and C. Wojtan, “Fast approximations for boundary element based brittle fracture simulation,” presented at the ACM SIGGRAPH, Anaheim, CA, USA, 2016, vol. 35, no. 4.","ama":"Hahn D, Wojtan C. Fast approximations for boundary element based brittle fracture simulation. In: Vol 35. ACM; 2016. doi:10.1145/2897824.2925902","apa":"Hahn, D., & Wojtan, C. (2016). Fast approximations for boundary element based brittle fracture simulation (Vol. 35). Presented at the ACM SIGGRAPH, Anaheim, CA, USA: ACM. https://doi.org/10.1145/2897824.2925902","mla":"Hahn, David, and Chris Wojtan. Fast Approximations for Boundary Element Based Brittle Fracture Simulation. Vol. 35, no. 4, 104, ACM, 2016, doi:10.1145/2897824.2925902.","ista":"Hahn D, Wojtan C. 2016. Fast approximations for boundary element based brittle fracture simulation. ACM SIGGRAPH, ACM Transactions on Graphics, vol. 35, 104.","chicago":"Hahn, David, and Chris Wojtan. “Fast Approximations for Boundary Element Based Brittle Fracture Simulation,” Vol. 35. ACM, 2016. https://doi.org/10.1145/2897824.2925902."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87"},{"file_date_updated":"2018-12-12T10:13:02Z","department":[{"_id":"ChWo"}],"supervisor":[{"full_name":"Wojtan, Christopher J","orcid":"0000-0001-6646-5546","last_name":"Wojtan","first_name":"Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87"}],"date_updated":"2024-02-21T13:50:48Z","ddc":["004","005","006","532","621"],"type":"dissertation","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"status":"public","_id":"1122","related_material":{"record":[{"relation":"other","id":"5558","status":"public"}]},"publication_identifier":{"issn":["2663-337X"]},"publication_status":"published","degree_awarded":"PhD","file":[{"file_name":"IST-2016-640-v1+1_2016_Bojsen-Hansen_TCaAWSW.pdf","date_created":"2018-12-12T10:13:02Z","creator":"system","file_size":13869345,"date_updated":"2018-12-12T10:13:02Z","file_id":"4982","relation":"main_file","access_level":"open_access","content_type":"application/pdf"}],"language":[{"iso":"eng"}],"alternative_title":["ISTA Thesis"],"month":"07","abstract":[{"text":"Computer graphics is an extremely exciting field for two reasons. On the one hand,\r\nthere is a healthy injection of pragmatism coming from the visual effects industry\r\nthat want robust algorithms that work so they can produce results at an increasingly\r\nfrantic pace. On the other hand, they must always try to push the envelope and\r\nachieve the impossible to wow their audiences in the next blockbuster, which means\r\nthat the industry has not succumb to conservatism, and there is plenty of room to\r\ntry out new and crazy ideas if there is a chance that it will pan into something\r\nuseful.\r\nWater simulation has been in visual effects for decades, however it still remains\r\nextremely challenging because of its high computational cost and difficult artdirectability.\r\nThe work in this thesis tries to address some of these difficulties.\r\nSpecifically, we make the following three novel contributions to the state-of-the-art\r\nin water simulation for visual effects.\r\nFirst, we develop the first algorithm that can convert any sequence of closed\r\nsurfaces in time into a moving triangle mesh. State-of-the-art methods at the time\r\ncould only handle surfaces with fixed connectivity, but we are the first to be able to\r\nhandle surfaces that merge and split apart. This is important for water simulation\r\npractitioners, because it allows them to convert splashy water surfaces extracted\r\nfrom particles or simulated using grid-based level sets into triangle meshes that can\r\nbe either textured and enhanced with extra surface dynamics as a post-process.\r\nWe also apply our algorithm to other phenomena that merge and split apart, such\r\nas morphs and noisy reconstructions of human performances.\r\nSecond, we formulate a surface-based energy that measures the deviation of a\r\nwater surface froma physically valid state. Such discrepancies arise when there is a\r\nmismatch in the degrees of freedom between the water surface and the underlying\r\nphysics solver. This commonly happens when practitioners use a moving triangle\r\nmesh with a grid-based physics solver, or when high-resolution grid-based surfaces\r\nare combined with low-resolution physics. Following the direction of steepest\r\ndescent on our surface-based energy, we can either smooth these artifacts or turn\r\nthem into high-resolution waves by interpreting the energy as a physical potential.\r\nThird, we extend state-of-the-art techniques in non-reflecting boundaries to handle spatially and time-varying background flows. This allows a novel new\r\nworkflow where practitioners can re-simulate part of an existing simulation, such\r\nas removing a solid obstacle, adding a new splash or locally changing the resolution.\r\nSuch changes can easily lead to new waves in the re-simulated region that would\r\nreflect off of the new simulation boundary, effectively ruining the illusion of a\r\nseamless simulation boundary between the existing and new simulations. Our\r\nnon-reflecting boundaries makes sure that such waves are absorbed.","lang":"eng"}],"oa_version":"Published Version","publist_id":"6238","author":[{"last_name":"Bojsen-Hansen","full_name":"Bojsen-Hansen, Morten","orcid":"0000-0002-4417-3224","first_name":"Morten","id":"439F0C8C-F248-11E8-B48F-1D18A9856A87"}],"article_processing_charge":"No","title":"Tracking, correcting and absorbing water surface waves","citation":{"chicago":"Bojsen-Hansen, Morten. “Tracking, Correcting and Absorbing Water Surface Waves.” Institute of Science and Technology Austria, 2016. https://doi.org/10.15479/AT:ISTA:th_640.","ista":"Bojsen-Hansen M. 2016. Tracking, correcting and absorbing water surface waves. Institute of Science and Technology Austria.","mla":"Bojsen-Hansen, Morten. Tracking, Correcting and Absorbing Water Surface Waves. Institute of Science and Technology Austria, 2016, doi:10.15479/AT:ISTA:th_640.","short":"M. Bojsen-Hansen, Tracking, Correcting and Absorbing Water Surface Waves, Institute of Science and Technology Austria, 2016.","ieee":"M. Bojsen-Hansen, “Tracking, correcting and absorbing water surface waves,” Institute of Science and Technology Austria, 2016.","apa":"Bojsen-Hansen, M. (2016). Tracking, correcting and absorbing water surface waves. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:th_640","ama":"Bojsen-Hansen M. Tracking, correcting and absorbing water surface waves. 2016. doi:10.15479/AT:ISTA:th_640"},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","page":"114","doi":"10.15479/AT:ISTA:th_640","date_published":"2016-07-15T00:00:00Z","date_created":"2018-12-11T11:50:16Z","has_accepted_license":"1","year":"2016","day":"15","publisher":"Institute of Science and Technology Austria","oa":1,"acknowledgement":"First and foremost I would like to thank Chris. I have been incredibly lucky to have\r\nyou as my advisor. Your integrity and aspiration to do the right thing in all walks of\r\nlife is something I admire and aspire to. I also really appreciate the fact that when\r\nworking with you it felt like we were equals. I think we had a very synergetic work\r\nrelationship: I learned immensely from you, but I dare say that you learned a few\r\nthings from me as well. ;)\r\nNext, I would like to thank my amazing committee. Hao, it was a fantastic\r\nexperience working with you. You showed me how to persevere and keep morale\r\nhigh when things were looking the most bleak before the deadline. You are an\r\nincredible motivator and super fun to be around! Vladimir, thanks for the shared\r\nlunches and the poker games. Sorry for not bringing them back when I got busy.\r\nAlso, sorry for embarrassing you by asking about your guitar playing that one\r\ntime. You really are quite awesome! Nils, one of the friendliest and most humble\r\npeople you will meet and a top notch researcher to boot! Thank you for joining\r\nmy committee late!\r\nI would also like to acknowledge the Visual Computing group at IST Austria\r\nfrom whom I have learned so much. The excellent discussions we had in reading\r\ngroups and research meetings really helped me become a better researcher!\r\nNext, I would like to thank all the amazing people that I met during my PhD\r\nstudies, both at IST Austria, in Vienna and elsewhere. "}]