[argyllcms] Re: relativ volume of gamut -- vrml comparison?
- From: Peter Karp <qmailing@xxxxxxxxxxxxxxxx>
- To: Klaus Karcher <argyllcms@xxxxxxxxxxxxx>
- Date: Wed, 9 Jan 2008 14:43:19 +0100
Hi Klaus,
> I just aded 3 lines to tifgamut:
> 557 if (verb) {
> 558 printf("Total volume of gamut is %f cubic colorspace
> units\n",gam->volume(gam));
> 559 }
This patch is in your local source or will become part of the next
release? Even with Graeme's new -i option for the gamut calculation
this still would be a nice addition to the verbose output of tiffgamut
:-)
> and "tiffgamut_vol -v -ir ... timage_t_200_sRGB_inters_iC2_r.tif"
> returned: "Total volume of gamut is 398107.430337 cubic colorspace units"
> there's indeed a considerable difference (>5%) to qhull's result:
>> qhull s FA <timage_t_200_sRGB_inters_iC2_r.points
>> [...] Total volume: 421367.74
In this case to determine the intersections the difference between
qhull and Argylls output should make no relevant difference in the
_relative_ comparison of the gamuts, does it? In the lack of the
patched tiffgamut version I could not test this, but would not expect
to see big differences.
Kind regards
Peter
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