Re: metamerism and metameric color - more
Re: metamerism and metameric color - more
- Subject: Re: metamerism and metameric color - more
- From: Rudy Vonk <email@hidden>
- Date: Thu, 21 Jun 2001 10:34:50 +0200
Peter MacLeod wrote:
>
According to Wyszecki and Stiles (1982) that is exactly the definition..
>
P. 184:
>
"Definition of Metamerism
>
Metameric color stimuli are color stimuli with the same tristimulus
>
values but different spectral radiant power distributions.
I appreciate the post and realize that I am getting a little pedantic,
but my personal impression is that the definition you quote is
semantically "hollow". In addition, it may even be incorrect because it
excludes the very realistic possibility that the metameric objects,
under the illuminant with which they look the same (or have identical
tristimulus values), actually *do* have identical reflectance power
distributions (i.e. the difference in SPD under another illuminant is
limited to wavelengths absent from the first illuminant).
There are other definitions, and I personally find Fred Bunting's not
only simpler and more practical, but also more accurate:
>
A relationship
>
between two color samples
>
whereby they appear to match in color
>
when viewed under certain conditions
>
(usually illuminant), but not under others.
--
__________________________________
Rudy Vonk
Oviedo, Spain
<email@hidden>
+34 607 354100
You can't always want what you get.
__________________________________