[argyllcms] Re: Monitor calibration

  • From: nome cognome <darkbasic4@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 27 Jul 2009 16:25:04 +0200

I did some more tests: hardware calibration only simply gives me better results.
So I performed a new calibration with Spectraview II and I profiled
the monitor with Argyll 1.0.4 and 3000 patches with 0.5 Degree of
Adaptation. I created both LUT and shaper+matrix profiles.

The LUT one, High Quality:
targen -v -w -d3 -e 1 -g 32 -f 320 -r check_argyll3090
dispread -v -yl check_argyll3090
profcheck -v -k -w check_argyll3090.ti3 argyll3090_lut.icm >>
Profile check complete, errors(CIEDE2000): max. = 3.713340, avg. =
0.392661, RMS = 0.592328

The shaper+matrix one, High Quality:
profcheck -v -k -w check_argyll3090.ti3 argyll3090_matrix.icm >>
Profile check complete, errors(CIEDE2000): max. = 1.915625, avg. =
0.311032, RMS = 0.373586

But there is a little big (huge) problem: where are the dark colors in
the shaper+matrix profile? O_O
Let's see an explanatory screenshot:

The LUT profile created with Argyll and the matrix profile created
with Spectraview II don't have this problem.

This is a _HUGE_ problem because Firefox color management system (both
LCMS and QCMS) and photoshop's gamut warning don't work with the LUT
This is why I need a matrix profile...


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