Re: Camera profiling with ICC et al
Re: Camera profiling with ICC et al
- Subject: Re: Camera profiling with ICC et al
- From: Graeme Gill <email@hidden>
- Date: Tue, 16 Sep 2008 12:33:41 +1000
edmund ronald wrote:
The question is: Is the Colorchecker or Colorcheker SG representative
of real-world colors ?
If not, then can a target that would be representative be constructed ?
For, surely, the chief criterion in constructing a target should be
that capture quality of the target implies capture quality in the real
world.
Right, but define "real world". There are a multitude of different
colorants that result in the same human perceived color (metamers),
but that to a camera may look different. A profile has to trade
accuracy of one metamer as rendered by the camera against another,
and so the range and statistics (weighting) of the test patches becomes
critical. You could create a different representative chart
each possible photography situation, containing colorants
from that situation in the correct statistical weighting,
but creating one chart that somehow represents everything
is probably an impossibility.
Graeme Gill.
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