使用时打开此例题目录下pic中的图片，然后依次单击按钮“转”、“1”、“2”、“3”、“4”和“5”，就可以实现精确的车牌定位。-When used in this Example to open directory pic in the picture, and then click the button followed by " U-turn" , " 1" , " 2" , " 3" , " 4" and