Re: Shmetamerism
Re: Shmetamerism
- Subject: Re: Shmetamerism
- From: Igor Asselbergs <email@hidden>
- Date: Tue, 06 Nov 2001 09:40:10 +0100
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> So is that not metamerism - or perhaps illuminant metamerism??
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> Or do we need a new word to describe the above problem. If so let's
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> coin one?? I'd rather work on ways to get rid of the problem than
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> <argue> about how to describe it ;-}.
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A term already exists to describe this phenomenon, "color inconstancy". When a
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color is perceived to be the same when the illuminant is changed, it is "color
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constancy" at work. When this human visual system mechanism fails then it is
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"color inconstancy". There is no need to invent terms.
However: metamerism and color constancy are two different ball games and can
very well be distinguished. In short:
Metamerism follows from the 'flaws' of the tristimulus 'build' of our eyes.
Colour constancy is the result of what happens 'behind' the eyes when the
stimuli are interpreted.
Igor Asselbergs