[sane-devel] gamma correction procedure

[gerard klaver]

On Mon, 2004-02-09 at 16:32, Christopher Marshall wrote:
> .
> 
> Correcting my monitor would be the hardest of all.  The simplest thing to do would be to display
> an image of the IT8 target on my screen, hold a physical IT8 target in my hand next to the
> monitor, and make adjustements to the monitor's gamma settings until my eye felt the two agreed
> largely.
> 
> Chris Marshall


 

The early mentioned version on
http://www.littlecms.com/profilers.htm

has also an option to generate a monitor profile if there is no icc
profile available for your monitor.
If gamma values are provided (coarse profile) or with a measurment sheet
(accurate profile)

To get the corrected picture use for example the program imagemagick
convert commando:
 convert <filename.png> -profile scanner.icc -profile monitor.icc <new
filename.png>


For some more information see also the new profiler at:

http://www.littlecms.com/lcms_profiler_beta_3.exe

 
http://www.littlecms.com/imgprf/screenshot.jpg


There is no linux version of this new profiler but scanner profiles can
be generated with wine (if wine version is from dec. 2003 of newer).
No luck yet with generating a monitor profile (with wine)

-- 
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m.vr.gr.
Gerard Klaver