Body Motion Detection Technology in Video

The detection and recognition of human body movement involves the research direction of multi-disciplinary knowledge, including digital image processing, computer vision and other professional fields. This paper first introduces three common moving object detection algorithms: background subtraction, inter frame difference and optical flow. On the basis of frame difference method and image edge detection algorithm, a dynamic edge point preserving method is proposed to realize moving object detection. This method combines the motion information and edge information of the picture, and can obtain the edge information of moving object in video sequence more accurately, which is more suitable for human body’s body motion detection.