matlab图像镜像

1. % By lyqmath @ Matlab中文论坛
   
2. clc; clear all; close all;
   
3. I=imread('football.jpg');
   
4. if ndims(I)==3
   
5.     B=rgb2gray(I);
   
6. else
   
7.     B=I;
   
8. end
   
9. J1=cat(3,fliplr(I(:,:,1)),fliplr(I(:,:,2)),fliplr(I(:,:,3)));
   
10. J2=cat(3,flipud(I(:,:,1)),flipud(I(:,:,2)),flipud(I(:,:,3)));
    
11. figure;
    
12. subplot(2,2,1);imshow(I);title('原始图像');
    
13. subplot(2,2,2);imshow(B);title('灰度原始图像');
    
14. subplot(2,2,3);imshow(J1);title('水平镜像');
    
15. subplot(2,2,4);imshow(J2);title('垂直镜像');