Am 02.11.04, 13:46 -0000 schrieb [EMAIL PROTECTED]:
>
>
> Kai-Uwe Behrmann <[EMAIL PROTECTED]> said:
>
> > Marti,
> >
> > You suggest to use tiff tags (whitepoint, primary chromaticies, ...) to
> > obtain sufficient data for on-the-fly profile creation.
> >
> > Are there reasons not to support it in tifficc?
>
> My lazyness :-). Anyway they are not so frequent. This comes from pre-ICC age,
> and AFAIK there are very few TIFF readers supporting that. Today is easier just
> embed the corresponding ICC profile. It takes same disk space and many apps
> honors the profile. I will try to add the code for 1.14. Do you have any
> samples of such TIFFs? Just to make sure it works as expected...
No, I simply read about and was considering supporting it. No
real example of such tiffs.
> > The next question is about gray profiles and gamma. Does lcms assume
> > gamma 2.2 for PT_GRAY->PT_RGB? The kTRC tag of the input profile has
> > gamma = 1.0 .
>
>
> Well, lcms does use kTRC on gray profiles, this is how they work. The gamma
> should be 1.0 in that case. But then the input profile should be marked as
> monochrome, not RGB.
Ok I will play with this a bit more.
> Regards,
> Marti.
>
Mit freundlichen Grüßen
Kai-Uwe Behrmann
+ Bildprogrammierung / Panoramen
+ Farbmanagement
+ email: [EMAIL PROTECTED]
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