Color Patch Display

[david-vj]

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[Milan Knížek]

davidvincentjones píše v Pá 11. 09. 2009 v 13:56 -0700:

Ver: 0.10.0

Wrote a small program to directly create a color chart using values that I
found on the web.
Colors 9 wide x 8 high plus Grey scale 9 wide x 2 high.
I embedded (overwrote text) the RGB values that were written to the file
showing 8 and 16 bit values as well as %s so that I had a direct reference.
Data was directly saved to a png 16 bit file.

Did you verify in other viewers/editors? What about influence of colour management?

regards,

Milan Knizek
knizek (dot) confy (at) volny (dot) cz
http://www.milan-knizek.net - About linux and photography (Czech language only)

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[david-vj]

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[Milan Knížek]

davidvincentjones píše v Ne 13. 09. 2009 v 09:38 -0700:
> Milan;
>
> The discrepancy appears to also show up in other editors (CinePaint for
> example).
>
> Can I assume that this is a result of differences in the display icc from
> sRGB standard that I use?

Turn of colour management and check the colours. If it is still wrong, I
guess the problem is not in the editor, screen profile, etc...

> If this is the display icc is there a way to work backwards and to use the
> screen vs data differences  to establish and correct calibration.
>
> How does one create a screen icc? Is it really that tough?
To have a proper display profile, one must use a special device - huey,
eye one display, etc... and the software.

Majority displays are designed to have gamut close to sRGB, use sRGB.icc
instead. The only problem is how "close" it actually is. You cannot tell
without the calibrating device.

Regards,

Milan Knizek
knizek (dot) confy (at) volny (dot) cz
http://www.milan-knizek.net - About linux and photography (Czech
language only)

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