Re: metamerism and metameric color - more
Re: metamerism and metameric color - more
- Subject: Re: metamerism and metameric color - more
- From: Igor Asselbergs <email@hidden>
- Date: Wed, 20 Jun 2001 10:54:07 +0200
Allow me to mingle into the discussion. I just joined the list recently....
>
> Actually, a red apple in a red room in red light will look white.....try it.
>
Based on my knowledge of chromatic adaptation and color constancy, I'd say
you're right. Still I don't know of any research in wich this sort of thing
was actually done. I'm curious: are you familiar with any of this kind of
research?
>
Unfortunately, I don't have the resources to carry out this very
>
interesting experiment (no red room), so I'll take Harvey's word for it.
>
However, would somebody kindly explain how the apple gets to reflect
>
wavelengths that are absent from the illuminant?
It doesn't. Due to chromatic adaptation (as allready explained by Samer
Mady) your brain will simply interpret the color of the apple as white. The
color of white, after all, depends on the quality of the overall whitepoint
in your environment. If the overall whitepoint in a room is in fact red (as
measured), red will be interpreted as white. (At least: that's what I would
expect to happen)
Igor Asselbergs