An analysis of the amplitude factors of the Bunraku puppet´s motion axis-for the description, analysis, and generation of humanoids´ motions

In order to design emotional actions of computer graphic characters, the authors analysed the actions of a Bunraku puppet which is manipulated by an expert of puppet manipulation. The puppet´s action is decomposed into a main part which is the motion of the puppet´s axis and the accompaniment which is the relative motion with respect to the motion of the axis. The emotional actions of the puppet are explained by the phase factor and the amplitude factor of the motion of the puppet´s axis. Based on this analysis, a simple method to design emotional actions are obtained