Deforming Surface Simplification Based on Feature Preservation

In computer graphics, methods for mesh simplification are common. However, most of them focus on static meshes, only few works have been proposed for simplifying deforming surfaces. In this paper, we propose a new method for the multiresolution representation of time-varying meshes based on deformation area and feature preservation. Our method uses the famous QEM (quadric error metric) as our basic metric. The idea is to modify the edge collapse cost by adding the deformation and sharp feature weight to the aggregated quadrics errors when computing the unified edge contraction sequence, then adjust this sequence slightly for each frame to get a minimum geometry distortion. Our approach is fast, easy to implement, and as a result good quality dynamic approximations with well-preserved fine details can be generated at any given frame.