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Answer by b3m2a1 for Separate the luminance from the chrominance in an image
Here's something that uses the "LAB" colorspace:butterfly = ColorConvert[Import["https://i.stack.imgur.com/2L3Hc.png"], "LAB";To kill the color channels:ImageMultiply[butterfly, {1, 0, 0}]Or to put...
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Answer by kglr for Separate the luminance from the chrominance in an image
img = Import["https://i.stack.imgur.com/2L3Hc.png"]You can also use ImageMultiply or ImageApply as follows:ImageMultiply[ColorConvert[img, "CMYK"], {1, 1, 1, 0}]ImageApply[{1, 1, 1, 0} # &,...
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Answer by David G. Stork for Separate the luminance from the chrominance in...
I think I figured it out:This re-combines the CMYK channels, but with the black channel effectively set to 0.
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Separate the luminance from the chrominance in an image
My goal is to separate a full-color image into its luminance and chrominance ("color") components and display them as two images: 1) a black and white image (for the luminance) and 2) a color image...
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