中文说明：
a.牌照定位，定位图片中的牌照位置；
b.牌照字符分割，把牌照中的字符分割出来；
c.牌照字符识别，把分割好的字符进行识别，最终组成牌照号码。
English Description：
a. License plate positioning, positioning the license plate position in the picture < p > B. license plate character segmentation, which separates the characters in the license plate < p > C. license plate character recognition, recognize the segmented characters and finally form the license plate number