[argyllcms] Re: Different approach to profiling?
- From: Graeme Gill <graeme@xxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Wed, 05 Sep 2007 10:25:57 +1000
Lars Tore Gustavsen wrote:
With this method, do you have to do the tiffgamut step for every image?
Yes, that's the idea.
icclink: Warning - Image gamut is wrong colorspace for link (Lab != Jab)
Because separate utilities are being used together, there is a little
manual coordination needed. You need to make sure that the colorspace
using for the gamut matches that used in profile for the gamut mapping.
For a lot of intents this is CIECAM02 appearance space ("Jab"),
while tiffgamut output defaults to D50 L*a*b* ("Lab").
So you need specify Jab for perceptual intent, and the same viewing
conditions as you will be using for the source colorspace of the link,
something like:
tiffgamut -v -ij -cmd ProPhoto.icm Flattened.tif
and the error should go away. (I will change tiffgamut to
automatically switch to Jab space if a viewing condition is
specified, which should lead to less surprise).
Graeme Gill.
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