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Twinned Meshes for Dynamic Triangulation of Implicit Surfaces

Antoine Bouthors 1 Matthieu Nesme 1
1 EVASION - Virtual environments for animation and image synthesis of natural objects
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology
Abstract : We introduce a new approach to mesh an animated implicit surface for rendering. Our contribution is a method which solves stability issues of implicit triangulation, in the scope of real-time rendering. This method is robust, moreover it provides interactive and quality rendering of animated or manipulated implicit surfaces. This approach is based on a double triangulation of the surface, a mechanical one and a geometric one. In the first triangulation, the vertices are the nodes of a simplified mechanical finite element model. The aim of this model is to uniformly and dynamically sample the surface. It is robust, efficient and prevents the inversion of triangles. The second triangulation is dynamically created from the first one at each frame. It is used for rendering and provides details in regions of high curvature. We demonstrate this technique with skeleton-based and volumetric animated surfaces.
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Submitted on : Friday, May 20, 2011 - 3:04:45 PM
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Antoine Bouthors, Matthieu Nesme. Twinned Meshes for Dynamic Triangulation of Implicit Surfaces. GI '07 - Graphics Interface, May 2007, Montréal, Canada. pp.3-9, ⟨10.1145/1268517.1268521⟩. ⟨inria-00402094⟩

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