中文说明： 车辆识别的代码，背景差分法是对图像进行处理的最直接、最简单的一种方法，也是使用最广 泛的一种方法。其前提是图像的背景保持固定不变，基本思想是让采集到的图像 序列中每一帧都与不含运动物体的静止参考帧做差分运算，突出目标图像，即将 两幅图像做相减运算，具体可表达为
English Description：
Vehicle identification code to process the image background subtraction method is the most direct and simple way, is the most widely used The Pan method. Is premised on the background of the image remain invariant, the basic idea is to provide acquisition images Each frame in sequence and do not contain moving object stationary reference frame-difference calculations, highlighting the destination image, Subtracts two images do operations, they can be expressed as