[argyllcms] Re: HDTV calibration using ArgyllCMS

  • From: János, Tóth F. <janos666@xxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Tue, 19 Jul 2011 22:49:10 +0200

The sort and refines version... I would like to see two new options in

8. Grayscale
-gs 10 20 30 40 50 60 70 80 90 100 = 10%, 20%... IREs
Measures black, white and optionally the primary device colors (one-by-one
when the user hits a keyboard button after he loaded the color patch
manually on the TV ; but you should be able to skip the primaries with SPACE
if you wish).
Calculates the luminance targets for the listed IREs on the target tonal
response curve and aids you through the grayscale calibration. (You should
be able to go back and forth manually between the points by hitting  <- A or
D -> while it continuously measures the display and calculates the dE values
against the corresponding target.)

9. Color space
-tg [number] where 1=BT.601, 2=BT.709, and so on including every common
video standards.
Measures the white point (freshly because they say it's safer to set these
settings with 75% patterns)
Calculates the luminance targets for the primaries and secondaries and aids
you through the color space calibration. (Same thing with <- A or D -> and
continuous measurements and dE calculations...)

I think it would be more practical to list the IREs than give the number of
the points because some TVs may use near-black or near-white points, or
anything they think is optimal...

The colorsape adjustment should be RGBCMY by default with easily skip-able
CMY (hit SPACE...). I am not sure if other colors should be offered but feel
free to tell if somebody wants more...
I am not sure if somebody needs custom colorspace targets for HDTV
calibration but let us know...

I think it could be easily added to the current code with some copy-pastes
and cosmetics.

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