车牌号码的自动检测先进行图像的预处理，在对预处理后的图像做边缘检测，根据车牌像素的大小进行车牌分割最后将分割的车牌保存在一个文件当中-Automatic detection of the vehicle registration number, preceded by image preprocessing, in the image pre-processing to do edge detection, in accordance with license plate license pla