Re: delta E 2000 discrepancy
Re: delta E 2000 discrepancy
- Subject: Re: delta E 2000 discrepancy
- From: Marco Ugolini <email@hidden>
- Date: Tue, 27 Mar 2007 22:42:55 -0700
In a message dated 3/27/07 1:56 PM, Mike Eddington wrote:
> Maybe someone can clear this up for me. I was checking a spreadsheet
> that calculates delta E 2000 for errors when I noticed a discrepancy
> between the values I derived, and those I got with the Color Difference
> Calculator at Bruce Lindbloom's website. I was getting a delta E 2000
> value of 0.8752155 while Bruce's calculator comes up with dE 2000
> 1.744262.
Hi Mike.
You're not telling us which spreadsheet you're using that gives you that
0.8752155 value (which, incidentally, is almost exactly one-half of the
1.744262 value, if that means anything at all).
> For fun I found two other sources...ColorThink Pro, which matched
> Bruce's value, and the ColourDifferenceFormulas.xls file located here
> <http://www.digitalcolour.org/Difference.htm>, which matches my value.
Your value that you derived from which spreadsheet?
By the way, I get the same Delta E 2000 values for your couplet as Danny and
Graeme. I would say that there is probably something off in your spreadsheet
(and in the "ColourDifferenceFormulas.xls" file from Phil Green as well).
Marco Ugolini
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