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

[Klaus Karcher <lists@xxxxxxxxxxxxxxxxx>]

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