Restore orignal colors to the processed image

Question

waqas pervaiz 2013-5-22

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https://ww2.mathworks.cn/matlabcentral/answers/76583-restore-orignal-colors-to-the-processed-image

hi, i have a human image...in order to extract face from the image i have to convert it to gray image... my question is, after completing my processing that is to extract face....how can i convert the output image back to its original colors....??

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Answer 1

David Sanchez 2013-5-22

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https://ww2.mathworks.cn/matlabcentral/answers/76583-restore-orignal-colors-to-the-processed-image#answer_86245

you can't. With every process of your image you loose information. When you grayscale (1D matrix) an colour image (3D matrix), you are loosing colour information.

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waqas pervaiz 2013-5-22

is it possible that if i overlap the original (input) image and the output image..after comparing the pixels of output image get replaced by the original (input) image pixels.... just a thought i am not sure if this is possible or not ?

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