Mesh Deformation under Skeleton-based Detail-preservation

With in skeleton based deformation, two issues are waiting for investigation, large angle rotation and artifacts near joint regions. In this paper we propose rotation angle decomposition and detail preserving method to conquer them. A skeleton with multiple connected bones is prior computed for a triangle mesh. While deforming, large angle rotation is simulated by several progressive small angle rotations. We also introduce a distortion metric function E to quantify the difference between mesh edge vectors before and after deformation, preserving the detail of mesh surfaces. Nearby vertex position blending is enforced. We use sparse conjugate gradient method for the minimization of metric function E. Results show our method is suitable for 3D modeling and character animation applications, making the deformation near joint regions more natural.