Approximation for Deforming Surface Sequence Based on Triangle Optimization
Shixue Zhang, Enhua Wu · 2008
Many graphics applications represent deformable surfaces through dynamic meshes. Such models often contain redundant details, which can be difficult for processing and transmission. In this paper, we propose an efficient method to generate multiresolution models for deforming surface sequence based on triangle optimization. We use an improved quadric error metric (QEM) criterion as our basic measurement, which can preserve more local features on the surface. We define a deformation weight to be appended to the aggregated edge contraction cost for the whole animation. This new metric can preserve not only the modelpsilas individual geometric features but also features only appeared during the deformation animation. At last, we propose an intrinsic Laplacian mesh smoothing method to improve the triangle shape and further reduce the visual distortion. Our approach is efficient, easy to implement, and as a result good quality approximations with optimized triangles can be generated at any given frame.