Modeling and Estimation of Nonlinear Skin Mechanics for Animated Avatars

dc.contributor.authorRomero, Cristianen_US
dc.contributor.authorOtaduy, Miguel A.en_US
dc.contributor.authorCasas, Danen_US
dc.contributor.authorPérez, Jesúsen_US
dc.contributor.editorPanozzo, Daniele and Assarsson, Ulfen_US
dc.date.accessioned2020-05-24T12:50:04Z
dc.date.available2020-05-24T12:50:04Z
dc.date.issued2020
dc.description.abstractData-driven models of human avatars have shown very accurate representations of static poses with soft-tissue deformations. However they are not yet capable of precisely representing very nonlinear deformations and highly dynamic effects. Nonlinear skin mechanics are essential for a realistic depiction of animated avatars interacting with the environment, but controlling physics-only solutions often results in a very complex parameterization task. In this work, we propose a hybrid model in which the soft-tissue deformation of animated avatars is built as a combination of a data-driven statistical model, which kinematically drives the animation, an FEM mechanical simulation. Our key contribution is the definition of deformation mechanics in a reference pose space by inverse skinning of the statistical model. This way, we retain as much as possible of the accurate static data-driven deformation and use a custom anisotropic nonlinear material to accurately represent skin dynamics. Model parameters including the heterogeneous distribution of skin thickness and material properties are automatically optimized from 4D captures of humans showing soft-tissue deformations.en_US
dc.description.number2
dc.description.sectionheadersSimulation of Soft Materials
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume39
dc.identifier.doi10.1111/cgf.13913
dc.identifier.issn1467-8659
dc.identifier.pages77-88
dc.identifier.urihttps://doi.org/10.1111/cgf.13913
dc.identifier.urihttps://diglib.eg.org:443/handle/10.1111/cgf13913
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.rightsAttribution 4.0 International License
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectComputing methodologies
dc.subjectPhysical simulation
dc.titleModeling and Estimation of Nonlinear Skin Mechanics for Animated Avatarsen_US
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