Re: [Gimp-developer] [Gegl-developer] babl roadmap
- From: Øyvind Kolås <pippin gimp org>
- To: Elle Stone <ellestone ninedegreesbelow com>
- Cc: gegl-developer-list <gegl-developer-list gnome org>, Gimp-developer <gimp-developer-list gnome org>
- Subject: Re: [Gimp-developer] [Gegl-developer] babl roadmap
- Date: Tue, 14 Oct 2014 13:52:40 +0200
On Tue, Oct 14, 2014 at 1:34 PM, Elle Stone
<ellestone ninedegreesbelow com> wrote:
The above sentence confuses concepts: The babl architecture might require
that images to be converted to and from unbounded linear gamma sRGB. That
doesn't mean babl is a CMS. And it doesn't mean unbounded linear gamma sRGB
has been turned into a PCS.
Babls role in the GEGL and thus GIMP architecture is to be the
internal CMS; this remains unchanged since babl was split out of a
non-linear video editor/compositing system.
To convert images to and from unbounded linear gamma sRGB, you MUST pass
through XYZ. XYZ is the PCS.
I remind you that linear RGB spaces are a single matrix multiplication
away from other linear RGB spaces and XYZ.
Let's cut to the chase:
Are you planning on converting non-sRGB images to unbounded linear gamma
sRGB? Yes or no?
Foo or bar? Do you have any idea what "implementation detail" means?
/pippin
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