[Openicc] Re: Krita... (was color adjusting...)

[Boudewijn Rempt]

(Resent because I meant it go to the list, not just to Peter)

On Monday 13 June 2005 17:09, Jan-Peter Homann wrote:
> Hello Boudewijn, hello list
>
> question to krita colorspaces
> -------------------
> As far as I understand, krita is able to manipulate RGB and CMYK-images
> and other special colorspaces wich are mainly some kind of RGB-derivates.

Well... They attempt to actually simulate the physical properties of pigments, 
following the research by Kubelka and Monk, as described by Baxter in his 
dissertation. Not complete rgb derivatives, I think -- there are also 
substance and substrate componets, and in some cases localized gravity, 
involved.

> Am I right, that the user can open e.g. an CMYK-file, use an embedded
> profile, manipulate in CMYK-colorspace and save the image with embedded
> profile ?
> Can the user  also work in RGB, convert via lcms to cmyk and manipulate
> the picture in CMYK colorspace ?

Yes, once we get cmyk to work without the bugs that plague us -- I nearly had 
it working in time for the release, only to be called away by other bugs. 
And with all tools and filters Krita has. Yuv, is in the works, too -- someone 
is (or should be) working on that right now. Indeed, apart from our bugs, 
there's nothing to stop the user from doing exactly what you describe. 

> printing from krita
> -------------------
> Some months ago, we had a discussion about using icc-profiles for
> printing. The gutenprint project plans to integrate in the next release
> icc-profile support with lcms inside.


I need to investigate that library, then. Does Scribus use gutenprint, too? I 
should investigate...

> standard place for icc-profiles
> ----------------------------
> We had an discussion for such place, and Kai Uwe Behrmann already build
> an installer for standard ICC-profiles:
>
>
> at
> <http://www.behrmann.name/index.php?option=com_weblinks&task=view&catid=71&
>id=39> a first version (RPM) can be downloaded. I invite you to reread the
> included LICENSE file, as packaging work of others is new to me.
> <<
>
> May a fute version of krita can use this place for profiles.

Easy enough.... Done, maybe I'll even make it a config option.

-- 
Boudewijn Rempt 
http://www.valdyas.org/fading/index.cgi
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
Url : http://lists.freedesktop.org/archives/openicc/attachments/20050613/c7e01fb0/attachment.pgp