Re: JND [was: Color Measurement]
Re: JND [was: Color Measurement]
- Subject: Re: JND [was: Color Measurement]
- From: Mike Eddington <email@hidden>
- Date: Thu, 16 Jul 2009 13:32:57 -0400
- Thread-topic: JND [was: Color Measurement]
> However, in the example given by Klaus Karcher, the L*a*b* values differed by
> 5 units in the b* values, the other values were the same, and only dE 1976
> correctly represented the dE as 5 units.
While this is entirely true, I'm not sure we should care. A difference of a
delta b* +/-5 between two yellow samples is barely distinguishable to the
human eye, which the dE2000 value is representing. There is a link to a test
file showing this inside this article:
http://www.graphicbrain.com/spectrophotometer-nightmare/
Mike
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