How to check the color variation in the ROI of an image

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hamed abdulaziz
hamed abdulaziz on 15 Feb 2014
Answered: Image Analyst on 15 Feb 2014
Hi All,
I have many coloured images,please could anyone tell me how to check the color variation in the ROI (segmented image) of an image?
thanks in advance

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Answers (1)

Image Analyst
Image Analyst on 15 Feb 2014
One reasonable way would be to calculate the mean color of the image. Then calculate the delta E (color difference) from every pixel to that mean color. Then histogram the delta E image. See http://www.mathworks.com/matlabcentral/fileexchange/31118-color-segmentation-by-delta-e-color-difference
Or you might want to calculate the Color Frequency Image

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