Sorry I missed to answere you somehow.
Am 21.03.12, 10:25 +0100 schrieb todd rme:
On Wed, Mar 21, 2012 at 8:39 AM, Kai-Uwe Behrmann <[email protected]> wrote:
Am 20.03.12, 21:17 +0100 schrieb Thomas Lübking:
Am 20.03.2012, 20:12 Uhr, schrieb Martin Graesslin <[email protected]>:
A fully color corrected compositor seems feasible to me
I'm atm. not even sure about that.
I might be utterly wrong, but my impression is that the xvidmode extension
can correct screens (eg. xcalib loads icc profiles), so a screen wide color
xvidmode gamma ramps are per channel curves. These are very limited compared
to ICC based colour correction. Those gamma curves provide better gray
balance and potentialy white point adjustment. But they do not describe
colour primaries shifts or other more complex distortions. Gamma curves must
be taken into account for ICC profiles. But detailed characterisation of
device colorimetry happens usualy in ICC profiles.
This may be an ignorant question, but can xvidmode be extended to
offer more complex correction?
That would end in a all desktop content is sRGB dituation. That would be
fine as long as we know that wide gamut monitors are excluded, like on
fixed hardware. Tablets could do that for their internal displays.
But I am afraid a desktop, which cribbles all wide gamut monitors by
default to sRGB, is suboptimal marketing.
kind regards
Kai-Uwe Behrmann
--
www.oyranos.org
