On 01/23/2010 08:04 AM, Martin Nordholts wrote: > Hi > > Right now we don't have a clearly defined color management strategy for > GIMP. > > I would like us to settle a minimal color management strategy for GIMP > so that we can fix some inconsistencies in our color management, in > particular for PNG [1], for 2.8. In short the problem with PNG is that > the current code always writes an sRGB chunk to a PNG file if no color > profile is attached to the image and no gamma is specified. > > I suggest that we formally settle with this minimal color management > strategy: > > > """ > An image either has or has not a color profile attached. A color > profile is attached as a GimpParasite named "icc-profile". > > For images that have a color profile attached, this color profile is > used when displaying the image and is embedded when the image is saved > or exported. > > For images that does not have a color profile attached, the global > color profile defined under Color Management in Preferences is used to > display the image, but no profile is embedded into saved or exported > files. > """ > > > So, does the above sound like a sound foundation for color management in > GIMP? I don't expect us to have time to apply this strategy consistently > all over GIMP for 2.8 but at least we have settled on something that we > can put in devel-docs and continue to build on later, and it allows us > to fix the PNG problem for 2.8. Sounds eminently reasonable; I had run into this issue also. I had naively signed up for the "work on color management" job. That said, do you happen to know where the sRGB thingie is added by default? (if not, I can probably find it, but if you know offhand, I'm not beyond laziness ;o) I had also been taking a peek at [2] and [3], which also seem to fall under the umbrella of this desired behavior. Finally, [4] is something that bites me a lot, but needs some UI/UX work. guiguru? [2] https://bugzilla.gnome.org/show_bug.cgi?id=556608 "Monitor color profile is not applied to filter preview" [3] https://bugzilla.gnome.org/show_bug.cgi?id=478528 "Layer previews are not color managed" [4] https://bugzilla.gnome.org/show_bug.cgi?id=320447 "fast switching between 'color managed display' and 'softproof'" --xsdg _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
