此程序是自己编写的一个简单的图像界面程序，适合初学者看看。有一般的打开图片，图片预处理，还有寻找圆心等功能。编写简单。-I have written this program is a simple graphical interface program for beginners to see. There are generally open a picture, the picture pretreatment, and look for the center and other func