Convert Rgb to grayscale and back to rgb

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OriAlpha
OriAlpha 2019-2-15
编辑： KALYAN ACHARJYA 2019-2-15
i have a image
i will read that image and do some of the operations on grayscale
then convert back to RBG
how can i do this

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KALYAN ACHARJYA
KALYAN ACHARJYA 2019-2-15
编辑：KALYAN ACHARJYA 2019-2-15
imageRGB is a given image.
gray_image=rgb2gray(imageRGB);
%do operation, say result1 is result image
RGB_Image=ind2rgb(result1,colormap);
Please note, there are some imformation loss during gray to RGB.
Read here ind2rgb, also read the answer of same question here

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