Stroke is a common health problem in the world that often leads to long-term movement disorders and disability. For impairment assessment, video motion analysis can provide useful information, which would help to enable much more flexible and efficient process checking, and to assess patients' movement ability. Therefore, LSCM has developed machine vision technology to automate human activity analysis for the tasks of: - Pose tracking for activity analysis - Pose comparison for training assessment This technology can be applied on pose assessment for rehabilitation exercises to train the elderly and provide feedback.