[argyllcms] Re: XYZ Y does not have clean gamma curve (has flat section at high end) while profiling EPSON EB-G5100 projector
- From: Graeme Gill <graeme@xxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Fri, 7 Aug 2020 13:21:56 +1000
Richard wrote:
Hi,
Thank you for the help. I am still struggling with the fact that applying the
.icc I
produce from calibrating/profiling does not seemingly change the projector's
response at
all from the native response...I am often using the intel integrated card to
drive the
projector, which I feel has limited options (especially on linux).
Calibration changes a devices response.
ICC device profile don't change anything - they aren't meant to.
They characterize the device.
It's only in the hands of a CMM that _two_ device profiles can
be used to transform device color values from one device space to another.
See <
https://www.argyllcms.com/doc/calvschar.html>
PS: Is there a way to create a 3D LUT (in .iCC file?) that can be used by
video card (or
by some software?).
Not that I know of. There are no universal standards for such things.
There are 3D "boxes" for video display purposes that can be
loaded with a 3D LUT/device link), but they are not cheap.
Soft alternatives are things like madvr, if you are on MSWindows.
Oyranos/CompICC provides a color managed desktop solution.
There is code around for applying 3DLuts during video playback
using Graphics card hardware that is used in the movie
industry (See ACES, OpenEXR sample code, etc.).
Cheers,
Graeme Gill.
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