[argyllcms] Re: HDTV calibration using ArgyllCMS

  • From: János, Tóth F. <janos666@xxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Tue, 6 Sep 2011 04:33:46 +0200

HCFR has the math for it. The problem is that it doesn't show me the Y
target itself but the error only and my sensor isn't supported, so I
can't do the adjustment in real-time with HCFR.

I think you can get a copy from the source code and copy the ralated math...

I guess it's something like:
- The WP is = xyY
- The primaries are = xy, xy, xy
- How much R,G,B intensity (Y) do I need to mix this WP?

WP should be D65 and actual Y, xy for R,G,B should be Rec709

2011/9/6, Graeme Gill <graeme@xxxxxxxxxxxxx>:
> János, Tóth F. wrote:
>> Well, HDTVs usually offer 6x3 adjustable contols for gamut calibration:
>> primaries and secundaries with either Red,Green,Blue or
>> Huye,Saturation,Luminance values for each of the six directly adjustable
>> colors.
> Hi,
>       without some concrete (ie. maths + standards) information, it's
> not really possible to know what you are after. Is there a standard for
> such controls, or a technical description of how they work and exactly
> what they do ? Are they even standardised, or are they whatever the
> particular manufacturer dreams up ?
> It may be possible to provide some generic facility to help with such
> adjustments, but more information is needed on how it works, what the
> procedure is, and what the aim is.
> Graeme Gill.

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