[argyllcms] Re: gamut mapping
- From: nome cognome <darkbasic4@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Fri, 24 Jul 2009 04:35:45 +0200
2009/7/23 edmund ronald <edmundronald@xxxxxxxxx>:
> I don' know if this is relevant here, but I'm highly sceptical of
> using Argyll to achieve adaptive gamut compression.
I did some tests using AdobeRGB as starting space and sRGB as
destination space. My monitor is a wide gamut one, so Adobe RGB is
fully contained in its gamut.
I used both Relative and Perceptual (with Argyll gamut mapping)
intents. The original image contains a gradient completely out of
gamut for sRGB, so using Relative intent I should obtain a uniform
color, while using Perceptual intent with gamut mapping I should
obtain the same (but shifted) gradient.
But there are no differences between Relative and Perceptual intents :(
This is a 3-levels tiff with the original AdobeRGB gradient, the
sRGB/Relative and the sRGB/Perceptual ones:
http://darkbasic.homelinux.com/images/sv2/3_levels.tif (10.6 MB)
You will need a wide gamut monitor to see the differences between
AdobeRGB and sRGB, otherwise you will have to use the color picker.
Cheers,
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