Pose-Space Subspace Dynamics
ACM SIGGRAPH 2016
Hongyi Xu, Jernej Barbič:
Pose-Space Subspace Dynamics, ACM Transactions on Graphics 35(4)(SIGGRAPH 2016), July 2016. BIBTEX
We enrich character animations with secondary soft-tissue Finite Element Method (FEM) dynamics computed under arbitrary rigged or skeletal motion. Our method optionally incorporates pose-space deformation (PSD). It runs at milliseconds per frame for complex characters, and fits directly into standard character animation pipelines. Our simulation method does not require any skin data capture; hence, it can be applied to humans, animals, and arbitrary (real-world or fictional) characters. In standard model reduction of three-dimensional nonlinear solid elastic models, one builds a reduced model around a single pose, typically the rest configuration. We demonstrate how to perform multi-model reduction of Finite Element Method (FEM) nonlinear elasticity, where separate reduced models are precomputed around a representative set of object poses, and then combined at runtime into a single fast dynamic system, using subspace interpolation. While time-varying reduction has been demonstrated before for offline applications, our method is fast and suitable for hard real-time applications in games and virtual reality. Our method supports self-contact, which we achieve by computing linear modes and derivatives under contact constraints.Comments, questions to Jernej Barbič.
- Real-Time Subspace Integration for St.Venant-Kirchhoff Deformable Models
- Real-time Large-deformation Substructuring
- NSF (CAREER-1055035, IIS-1422869)
- Sloan Foundation
- Okawa Foundation
- USC Annerberg Graduate Fellowship to Hongyi Xu
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