Matlab读取图像，显示H、S、V分量

程序代码：

a = imread('test.png');

hsva = rgb2hsv(a);
h = hsva(:,:,1);
s = hsva(:,:,2);
v = hsva(:,:,3);
figure,
subplot(2,2,1),imshow(hsva);title('hsv格式图');
subplot(2,2,2),imshow(h);title('h');
subplot(2,2,3),imshow(s);title('s');

subplot(2,2,4),imshow(v);title('v');

结果图：