Exp	· Description : Human Motion Detection is one of the most active research area in computer vision, visual analysis of human motion attempts to detect, track and identify people, and more generally, to interpret human behaviours, from image sequences involving humans. Human motion analysis has attracted great interests from computer vision researchers due to its promising applications in many areas such as visual surveillance, perceptual user interface, content-based image storage and retrieval, video conferencing, athletic performance analysis, virtual reality, etc. Human motion analysis has been investigated under several large research projects worldwide.