Split and display channels of color image

Display RGB channels from color image as three different gray images

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RGB image is composed of three color channels. This script decomposes those channels into own variables and displays them as grayscale images.

A = imread('kytka256.jpg');
R=A(:,:,1);
G=A(:,:,2);
B=A(:,:,3);

subplot 221;imshow(A);title('Original');
subplot 222;imshow(R);title('Red');
subplot 223;imshow(G);title('Green');
subplot 224;imshow(B);title('Blue');
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