打开图片，读取图像中设定点图像颜色值，然后对其进行比较，判断是否显示的数字，判断指定的点是否显示，显示的英文字母是什么-Open the image, the read image in the image color setpoint value, and then compare them, determines whether the digital display, it is judged whether the specified point is displayed, nothin