Re: formula DeltaE2000
Re: formula DeltaE2000
- Subject: Re: formula DeltaE2000
- From: Alexey Gribunin via colorsync-users <email@hidden>
- Date: Thu, 29 Aug 2024 10:53:16 +0300
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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