运动目标检测是将位置发生改变的物体从背景中提取出来，它是运动目标跟踪、行为识别

和场景描述等技术的基础。运动目标检测的经典方法有光流法、帧间差分法和背景减除法。-Moving object detection is to change the position of the object extracted　the background, it is a moving target tracking, behavior recognition

And underlying technology scene descr iption. Moving object detection method for light classical flow method, frame difference and background subtraction.