Re: The DeltaE 2000 color difference formula [was: Evaluation of Color Difference Formulas]
Re: The DeltaE 2000 color difference formula [was: Evaluation of Color Difference Formulas]
- Subject: Re: The DeltaE 2000 color difference formula [was: Evaluation of Color Difference Formulas]
- From: Graeme Gill <email@hidden>
- Date: Fri, 20 Jul 2007 14:17:00 +1000
Marco Ugolini wrote:
DeltaE 2000 is neither "ideal" nor "perfect", and I'm sure that future color
difference equations (perhaps based on color appearance models like CIECAM)
will tackle the task even more effectively. But I understand that the color
scientists at RIT's Munsell Color Science Lab (Roy Berns himself among them,
if memory serves me well -- please let me know if I should be mistaken) view
it as the most accurate to date among those available for use by the public.
My impression is that the accuracy of a model like DeltaE 2000 is dictated
primarily by the data sets it has been tested against. Generally these
psycovisual test sets are very laborious to obtain, and the data is quite
noisy due to the subjective nature of the judgement, and the range
of test subjects (people) used.
The test setup is also tricky - it's easy to add skews to the data if
viewing conditions etc. aren't managed correctly.
Graeme Gill.
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