自己写的一个图像裁减功能的代码，但必须首先设置好的裁减区域矩形框的坐标。-himself wrote an image of the reduction of the functional code, but must first set a good reduction of regional rectangular box coordinates.

自己写的一个图像裁减功能的代码，但必须首先设置好的裁减区域矩形框的坐标。-himself wrote an image of the reduction of the functional code, but must first set a good reduction of regional rectangular box coordinates.