说明：  自编的matlab gui小程序。功能包括：打开文件夹、在列表框中显示打开文件夹下的所有图像文件、点击列表框中图像则显示图像，并给出图像宽度高度信息在文本框中
(Directed the matlab gui applet. Features include: Open the folder to display all the image files open folder in the list box, click on the image list box displays the image, the image width and height information given in the text box)