本程序是基于MATLAB GUI 的一个界面，实现了“打开一幅图像，在图像上画多边形和矩形”的功能，同时还可以选择不同的线型和颜色，是初步学习GUI的很好的例子。-This procedure is based on a MATLAB GUI interface, " open an image, in the image to draw polygons and rectangles" , but can also choose a different line type and color, is preliminary to learn from the good example of the GUI.