Grayscale of RGB channels

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SNEHA P S
SNEHA P S 2017-7-13
编辑： Jan 2017-7-18
Is it possible to convert the matrix values of R, G and B channels to its own grayscale values respectively?
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SNEHA P S
SNEHA P S 2017-7-18
Am not sure that whether the R G and B matrices itself display grayscales ?
Adam
Adam 2017-7-18
Each of the R, G and B channels can already be considered greyscale by itself. Whether it is useful to do so or not is another matter, but you haven't given any information so it's impossible to say.

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Jan
Jan 2017-7-18
编辑：Jan 2017-7-18
RGB = rand(100, 100, 3); % RGB array
R = RGB(:, :, 1); % Gray image of the red channel
G = RGB(:, :, 2); % Gray image of the green channel
B = RGB(:, :, 3); % Gray image of the blue channel
figure
image(R)
figure
image(cat(3, R, R, R))

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