Human activity analysis: Concentrating on Motion History Image and its variants

The Motion History Image (MHI) method is a view-based temporal template approach, which is simple and robust in representing movements, and hence MHI is widely employed by various research groups for action recognition, motion analysis, etc. This paper overviews motion history image (MHI)-based human motion recognition techniques. Since the inception of the motion history image template for motion recognition, various progresses have been adopted to improve this basic MHI technique. We have presented almost all the important variants of the MHI method in this paper. This paper has pointed some areas for further research at the top of this method.