Re: How to calculate the Colordifference Delta E with ImageJ ?

Posted by Matzu Khan on Nov 23, 2014; 12:58pm
URL: http://imagej.273.s1.nabble.com/How-to-calculate-the-Colordifference-Delta-E-with-ImageJ-tp5009612p5010584.html

Hello Peter,

thanks for all the effort !! I know these are clipped and also there is a lot of noise.
I made those images outside water in order to practice my workflow with DCRAW and color Transformer.

Even though these images are clipped, it should still be possible to calculate a Delta E   ?
But for the images below I get Delta E values between 25 and 90 and wonder if these are still right !!



Values for the top left patch and the one right next to it are:
Delta E          L1         L2        a1        a2        b1           b2
30,85       52,872  35,524   44,948  47,272   21,859   47,272
50,97   79,652  55,874   29,366  48,919   8,290   48,919

So I am not sure if Delta E- in CIE L*a*b*is the most suitable Value for me.
May be relative hue would be more suitable for my approach. What do you think ?

With best Regards
Matzu

PS: Did you know there is a a KickBoxer with your name ??