[argyllcms] Re: relativ volume of gamut -- vrml comparison?

  • From: Klaus Karcher <lists@xxxxxxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Fri, 04 Jan 2008 14:05:46 +0100

Klaus Karcher wrote:
Do you think it's worth the effort to add a volume intersection
report to viewgam? or the gamut volume to tiffgamut -v? (the latter
should be no problem, provided that iccgamut and tiffgamut use the
same gamut object)

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 }

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

so much for "impressive precission" ;-)

Klaus

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