A three-level motion texture for human motion modeling

A three-level motion texture is proposed to model complex human motion that is statistically similar to the original motion data. The three-level structure, namely moton index, moton and moton distribution, is defined to synthesize motions. To describe the continuous and non-linear dynamics of human motion, the motion texture is modeled by a Non-Stationary Switching Linear Dynamic System (NS-SLDS), which improves the Switching Linear Dynamic System (SLDS) by non-stationary functions. A BSK-tree (Binary Key-pose Splitting Tree) retrieval method applied in motons supplies the ability to access data in frame-level. Thus the motion texture can be manipulated at three different levels, by retrieving key-frame in specific moton, by changing the details of a specific motion at the moton-level and by designing a new choreography at the distribution-level. In motion synthesis experiments, the proposed approach was proved flexible and effective.