How to get summation of images

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mahesh chathuranga
mahesh chathuranga on 19 Oct 2013
Answered: Image Analyst on 19 Oct 2013
I have three images ( contrast feature,cluster prominence & cluster shade) with same size(0-255 range).I want to get the summation of this three feature images(sum_feature image).But,when get the summation, all pixel values in summation image are going to 255!(differences of pixel values are not appear).how to do this correctly?thanks!

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Answers (1)

Image Analyst
Image Analyst on 19 Oct 2013
Because they are uint8, they get clipped at 255 anytime the sum would exceed 255. Cast them to double before adding them.

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