该文件架下一共有4个matlab程序。结合到一起可以实现在matlab下实现选中ORL库的一幅图像然后找出与之最相近3张照片并显示出来。-the document-a total of the next four Matlab procedures. Can be combined to achieve the Matlab ORL selected under the image of a then identify with the most similar 3 photos and dis