视频检测系统是利用图像处理技术从运动图像序列中检测、识别、跟踪车辆的技术，获取所需交通流状态信息。常用方法是基于与背景相比较的方法。-Video detection system is the use of image processing technology, the detection of motion in image sequence recognition, vehicle tracking technology, to obtain the required traffic flow information. The commonly used method is compared with the method based on background.