先介绍实现视频图像目标检测的几种算法，然后介绍一种开放源代码的计算机视觉类库OpenCV,主要阐述该类库的特点及其结构，最后通过“检测一个视频中的运动物体”这一实例探讨了使用OpenCV进行编程的方法。-First, the algorithm of target detection based on video images, and then introduced a kind of open source computer vision library OpenCV, main characteristics and the structure of the library, at last, by "detect moving objects in a video" this instance of the programming method are discussed using OpenCV.