Hi Alexey, Txs for your message! Now I am sure this is the good value! My problem is solved today, I have made a good formula in javascript that makes a correct output value.(2.869712364) grz. Paul
Op 29 aug. 2024, om 09:53 heeft Alexey Gribunin via colorsync-users <colorsync-users@lists.apple.com> het volgende geschreven:
Hello Paul!
Correct value is deltaE00 2,87 deltaE00 5,74 is wrong.
I've faced with the same error in dE2000 function for Octave. The mistake was in formulas for dL', dC' and dh' calculation, there should be simple subtraction (i.e dL'=L2-L1, dC'=C2'-C1'), but wrong function had modulos of the subtractions there, i.e. dL'=ABS(L2-L1) etc.) Hope this helps.
Best regards, Alexey Gribunin.
Can somebody tell me that the outcome of deltaE00 2,87 or deltaE00 5,74 is correct with the next values: - reference L=41,880 a=3,500 b= -33,190 - measure L=40,488 a=9,092 b= -37,342 I try to use the formula in a PHP or javascript environment but I think there is a small error in it? Maybe someone has the right formula for me. Thanks in advance! grz. Paul Yntema
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