Monitoring method and system for recognizing hanging behavior

The invention relates to the image processing technical field, in particular to a monitoring method and a system for recognizing a hanging behavior. The monitoring method comprises the following steps: using a frame difference method to extract a prospect as to a real time available current frame image; searching the human profile of a current frame image and storing in a form of sequence of points; calculating a circumscribed rectangle of the profile; acquiring a moving track of the circumscribed rectangle based on multiple frame images and judging whether or not the behavior is hanging. If yes, then calling the police. The monitoring system comprises a prospect detecting module, a searching profile module, a calculating circumscribed rectangle module and an alarming module. The prospect detecting module is used for utilizing the frame difference method to extract the prospect; the searching profile module is used for obtaining and storing the profile of human bodies of current frame image; the calculating circumscribed rectangle module is used for calculating the circumscribed rectangle of the profile; the alarming module is used for judging whether or not the behavior is hanging based on the moving track of the circumscribed rectangle, if yes, then call the police. The monitoring method and the system for recognizing hanging behavior can timely alarm the hanging behavior.