Re: Big problems using Bill Atkinssons new Eye-1 profiles
Re: Big problems using Bill Atkinssons new Eye-1 profiles
- Subject: Re: Big problems using Bill Atkinssons new Eye-1 profiles
- From: edmund ronald <email@hidden>
- Date: Tue, 7 Feb 2006 06:42:22 +0100
Based on my experience writing interpolation software for my Ph.D, I
would say that that too many data points may create overfitting, with
the interpolation surface moving around wierdly and and folding over
itself. Or what could be called a "hegehog" profile. Few data points
should rather create a smooth but inaccurate profile.
Applying this to color, one might guess that a smooth inaccurate
profile is appropriate for most consumer inkjets for color
reporduction, but may prove problematic for monochrome. On the other
hand a profile that has overfitting may create brutal color changes in
perceptively flat color areas, skin color posterisation, banding, and
other unpleasant artefacts.
The above is just guesswork, using my past academic expertise to
explain what I have observed in the profiles I've made. Of course
science has little place in user perception that "more patches means a
better profile", and Bill Atkinson has not published his findings.
Edmund
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