Abstract: The collision detection and response between the garment and the human body model is an important factor when dealing with dynamic clothing simulation. In order to improve the efficiency and effect of the simulation, this paper presents a new method based on the ellipsoid bounding box in multi-resolution. After subdividing the human model by using octree, we first reorganize and optimize the voxels. Then we merge the sphere bounding boxes based on the multi-resolution ellipsoids for accelerating the collision detection, and form a series of model approximations. We also interactively design the garment stitching, which makes the cloth simulation more flexible. The experimental result shows that the simulation is more realistic and it is helpful to improve the efficiency of the cloth simulation.

Key words: sphere bounding box , voxel division , octree , muoti-resolution , ellipsoid