[argyllcms] Re: Bug: different colors in same patch

  • From: Graeme Gill <graeme@xxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 07 Jan 2008 12:16:03 +1100

Frédéric Mantegazza wrote:

This is the projector profile. portable.icc is a Mike's test on a LCD, with the same calibrator.

Well, iccexamin shows the balck point near the edge of the xy diagram, outside of the primaries triangle. I presumed it is wrong. Shouldn't it be close to the white point?

The black point in the EP739H.icc profile you attached last time
doesn't seem at all strange -

XYZArray:
  No. elements = 1
    0:  0.000793, 0.001068, 0.000031    [Lab 0.964825, -0.954682, 1.605874]

It doesn't seem a particularly smooth profile though (the nature of the device,
too few sample points, LUT resolution ??)

A shaper matrix would probably be smoother, but may be less accurate.

Graeme Gill.



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