The character model must be created in advance and given to the system. Because the character’s skeletal model is different from the actor’s skeletal model, captured motions and editing parameters are automatically retargetted from the user’s pose to the character’s pose. We implemented an on-line retargetting process which is similar to [Shin et al. 2001; Lee and Shin 1999]. In our experiments, we used a character model that contains 50 joints. The user’s skeletal model used in the motion capture system [NaturalPoint ] had 23 joints.