这个程序的功能实现了，将一幅彩色图像先变为灰度图像，然后在统计它的直方图，接着给变换后的图像输入目标，做剪影，最终把剪影后的结果输出-Function realization of this program, and will be a color image into a grayscale image first, and then its histogram statistics, and then after the image input to the transformation g