背景差和帧差法实现运动人体的跟踪，具有搞噪声和消除大部分阴影功能-Background difference and fr a me difference method to achieve motion tracking of the human body, has engaged in the shadow of the noise and the elimination of most of the functionality

运动目标检测和跟踪，用的是水平集方法和二次帧差法实现-Moving target detection and tracking