Real-Time Collaborative Animation of 3D Models with Finger Play and Hand Shadow

The authors propose a method for real-time collaborative animation for 3D models with finger play and hand shadow. Two or more users have the model animated more complexly and expressively than one user. For instance, a model of a crocodile is animated by two users; one manipulates its mouth, neck and tail, and the other manipulates its four legs. With the implemented system up to five users can manipulate one model collaboratively. From evaluations following points were found: 1) users could manipulate models without detailed instruction; 2) most participants felt the system operable and enjoyable; 3) the motions made with the system were not less cute, amusing and lively than those by animators with conventional methods.