边缘检测:直接运行程序时，首先打开原图并点击左视图，使之显示原图像；然后点击右视图并选择菜单中的处理函数，处理后的图像即会在右视图上显示-Edge Detection : Direct operating procedures, the first to open the maximum and click Left Side, so that it shows the original image; Then click View and choose the right menu proce