Dynamic LOD Based on the Ring Constraint for Virtual Human Models

The paper proposes a new method for simplification to virtual human and its motion sequences. By the method,firstly,a simplified base model is generated using Qslim but with ring-like constraints at the base model surfaces around skeleton nodes （i.e.joints）.Then simplified sequences from the simplified base model could be generated by using vertex blending.Experiments show that the proposed method can generate faithful simplification result of animation sequences.Besides,the algorithm is independent of any concrete animation sequence for both the simplification and LOD controlling process,so it is suitable for crowd rendering in real time.