MATLAB编程：彩色图分离为RGB三个层的方法(R,G,B各为灰度图)

A=imread('test2.jpg');

RED=A(:,:,1);

GREEN=A(:,:,2);

BLUE=A(:,:,3);

figure(1), imshow(Red);  

figure(2),imshow(GREEN);

figure(3), imshow(BLUE);