how to convert from grayscale to rgb by lightness method ??
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Hanan Elsayed
on 24 Aug 2021
Commented: Hanan Elsayed
on 24 Aug 2021
how to convert from grayscale to rgb by lightness (desaturation) method (matlab code)??
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Accepted Answer
Turlough Hughes
on 24 Aug 2021
Edited: Turlough Hughes
on 24 Aug 2021
You can do the following:
I=imread('peppers.png');
newImage = uint8(( double(min(I,[],3)) + double(max(I,[],3)) ) ./ 2);
imshow(newImage)
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Turlough Hughes
on 24 Aug 2021
Thanks @Image Analyst. I should have converted to a datatype not capped at 255 in order to add the values. I've edited the answer with the correction.
Actually, one could also just do the following without converting datatypes:
I=imread('peppers.png');
newImage = min(I,[],3)./2 + max(I,[],3)./2;
imshow(newImage)
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