[argyllcms] Re: HDTV calibration using ArgyllCMS

  • From: János, Tóth F. <janos666@xxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Tue, 6 Sep 2011 01:19:45 +0200

Now that you finished the reverse enginnering of the new X-Rite sensor, you
may have some time for these.

The only real problem is figuring out the gamut luminance targets. I can do
everything else with ArgyllCMS + other free softwares or custom spread
sheets. But I can't read out the target Y numbers from anywhere (not even
from CalMan).

Well, this would also be possible with an excel sheet but I don't know the
math of this.
I am supposed to find gamut luminance targets for 75% stimulus points of the
primary colors, based on the target white point (D65) and the actual white
luminance. I don't know the math of the R,G,B color mixture (how much R,G,B
luminance you need to get a desired W...)

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