Matlab 将图像的RGB分层,抽取三个分量层

A=imread('football.jpg');  %也可读入RGB图像peppers.png
R=A(:, :, 1);
G=A(:, :, 2);
B=A(:, :, 3);
subplot(2, 2, 1),  imshow(A),  title('原始图像');
subplot(2, 2, 2),  imshow(R),  title('R层图像');
subplot(2, 2, 3),  imshow(G),  title('G层图像');
subplot(2, 2, 4),  imshow(B),  title('B层图像');
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