[argyllcms] Re: something wrong in my workflow?
- From: Vallo Kallaste <kalts@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Sun, 3 Jan 2010 01:58:05 +0200
On Thu, Dec 31, 2009 at 11:18:20AM +1100, Graeme Gill <graeme@xxxxxxxxxxxxx>
wrote:
> It's a hint that perhaps your monitor is out of gamut of the Lab
> PCS encoding range. I'm not convinced that the warning is 100% reliable
> though, so I've put a more specific test in the next release,
> and increased the level of information.
>
> You can check by looking up the primary chromaticities
> of the matrix version of the profile (colprof -as) and see if they
> are clipped.
>
> [ ie. iccdump -v3 -trXYZ -tgXYZ -tbXYZ profile.icm
> and check if the a or b values are outside the range
> -128 to +128 ]
iccdump -v3 -trXYZ -tgXYZ -tbXYZ 3008WFP-D65-2.2-smatrix.icm
XYZArray:
No. elements = 1
0: 0.678406, 0.313843, 0.002029 [Lab 62.830697, 104.923102, 104.497254]
XYZArray:
No. elements = 1
0: 0.149521, 0.635010, 0.091751 [Lab 83.705272, -161.137986, 75.722273]
XYZArray:
No. elements = 1
0: 0.136276, 0.051132, 0.731125 [Lab 27.054923, 74.866426, -117.881845]
Althought I don't understand, the Lab space should represent all the human
visible colors? I've got understanding that there is currently no consumer
technology available for representing all those colors? So there is only
two ways to interpret: I am wrong or my display is able to display some
imaginary green color :)
> icclu -ff -ir profile.icm
> 1 0 0
> 0 1 0
> 0 0 1
This takes longer than I have patience for, stopped the process after 5
minutes. I don't have "state-of-the-art" system but quad-core Q9550@xxxxxx
should be still fast enough.
Just FYI.
--
Vallo Kallaste
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