1. INTRODUCTION Vision-based human motion analysis is an active research field due to its wide practical applications such as biometrics, human-computer interface, image and video retrieval. Usually, an important prerequisite of this kind of research is a large amount high-quality motion-specific animation data for algorithm training that reflect various imaging conditions, e.g., view-points and body-shapes. Given difficulties on collecting real-world training data, several computer animation software, such as Maya MotionBuilder (Autodesk), and Poser (Curious Labs), have been adopted for animation generation due to their efficiency, flexibility and low-cost.