说明：  根据逆透视变换原理从交通图像中提取交通参数，可以根据图像的像素坐标计算实际路面的距离，计算车辆的位移，速度等参数
(Extract traffic parameters from the traffic image according to the principle of inverse perspective transformation, the actual road distance can be calculated according to the coordinates of the image pixels, the calculation of the displacement of the vehicle speed and other parameters)