[argyllcms] Re: Flags for Profile

  • From: "ronn kling" <ronn@xxxxxxxxxxx>
  • To: <argyllcms@xxxxxxxxxxxxx>
  • Date: Mon, 23 Jun 2008 06:39:54 -0400

OK, that brings me back to an error that I ran into before.

Ideally to compare this with profile maker I need to use D65 and the observer of 1964_10. This is the command I use

profile -v -qu -i D65 -o 1964_10 camImageFile

but I get this error.

Error - Requested spectral interpretation when data not available

What, exactly, am I missing?

----- Original Message ----- From: "Gerhard Fuernkranz" <nospam456@xxxxxx>
To: <argyllcms@xxxxxxxxxxxxx>
Sent: Sunday, June 22, 2008 4:15 PM
Subject: [argyllcms] Re: Flags for Profile

ronn kling wrote:
I am only usinfg the -u flag

profile -v -qu -u camImageFile

I am trying to compare the same image processed with two profiles. One
created with profile Maker and the other created with argyll.

It appears from the documentation that the -u flag overrides any
intent setting flags.  Am I reading this correctly?

Normally (w/o -u option) the profile command chooses the color of
unprinted paper (i.e. Dmin or GS00 patch) as media white point location
for scanner profiles. With the -u option, the media white point is
placed at D50 instead. This has the side effect that relative
colorimetric and ICC-absolute intent will give the same result. Since
D50 is outside the gamut of the calibration target, the profile will
need to extrapolate the region between Dmin and D50.


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