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Calculating from AbsCol to RelCol from L*a*b*?

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Calculating from AbsCol to RelCol from Lab*?

Subject: Calculating from AbsCol to RelCol from L*a*b*?
From: Terence Wyse <email@hidden>
Date: Sat, 18 Apr 2009 16:34:42 -0400

Hello all,

Anybody here know where I can find the formulae for calculating relative colorimetry from absolute L*a*b* where the L*a*b* for paper white is known? I know that it's not as simple as subtracting paper white L*a*b* but I've searched and can't find the math used to come up with relative colorimetric values.

Thanks,
Terry Wyse
______________________________
Terence Wyse, WyseConsul
Color Management Consulting
G7 Certified Expert

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