利用高斯模型更新背景，再进行区域标记，去除噪声影响，检测出车辆。-Using the Gaussian model update the background, and then mark the area to remove the effects of noise, detect vehicles.

利用Python界面图形编程模拟一个车辆的运动模型-Small python physics simulation of a small moving car. This set of files is used as a means of education on python programming and physics modelling.