A general approach for measuring crowd movement

Abstract

Detecting the movement of crowd is one of an important task in monitoring crowd. The movement of crowd can be used to understand the behaviour of the crowd and this can help any surveillance application to maintain the safety environment for crowd, especially in a public area. There are two ways to measure the movement such as using shape- based or motionbased techniques. This is because when there are changes in the object’s movement, human effectively perceive the object’s shape and motion. Nevertheless, using the shape-based technique is preferred since both moving and stationary pedestrians can be recognized. In this paper, a general way on measuring the movement is proposed. A new definition of crowd movement patterns which are no movement, nonrandom movement and random movement is introduced. The shape-based technique utilizing invariant moments will be explored for detecting the movement of crowd.