color similarity in CIElab color space

Hi, I have 200 jpg images and I would like to obtain a color similarity/dissimilarity matrix between all pairs of images. I would like to use the CIElab color space as I know that it better reflects the human vision system. I know that I need to bin the color pixels of each image first and then calculate their distance. My thought was: transform the RGB to Lab first, then bin the new calculated pixels and then use the Earth Mover's Distance as a metric distance to obtain a final value for each pair. However, I am not sure if these steps are correct. Can anyone describe it step by step for me so that I can understand it better? Thank you for your help

Answer 1

[Mahmoud Afifi]

You can use deltaE to measure the difference between colors. It works in Lab space. Check this link for more information DeltaE