Human action in a video based application plays a
significant role that alerts the researchers towards recognizing the
motion of human. Other video applications also have video
content extraction, summarization, and human computer
interactions. The existing methods needs manual footnote of
pertinent portion of actions of our interest. Recognition of human
action can be done authentic without physical commentary of
applicable parts of action of any one’s interest. In this paper we try
to update the previous reviews on many ways of recognizing
Human activities in videos that had different techniques like
Hidden Markov model, feature extraction, segmentation etc. the
recognition of human activity in applications like visual
observation in mobile, human fall detection, video conference,
robotics.