中文说明： 基于背景差值法对交通流量的检测，适用于初学者学习，便于对背景差值方法的理解，以及对运动物理检测技术的初步了解，程序代码给出了详细的检测步骤，适合学学习数字图像处理的初学者使用，代码精简，程序设计思路清晰，便于初学者掌握。
English Description：
&The detection of traffic flow based on background difference method is suitable for beginners to learn, easy to understand the background difference method, and the preliminary understanding of sports physics detection technology. The program code gives detailed detection steps, which is suitable for beginners to learn digital image processing. The code is concise, the program design idea is clear, and easy for beginners to master.