On Fri, Jul 10, 2009 at 2:27 PM, Paul Johnson <pauljoh...@gmail.com> wrote:
> Hi, everybody: > > I filed a bug about Gimp after some checking, it was declared INVALID > and I was referred here to ask how to fix it. I'm running Gimp 2.6.6 > on Ubuntu 9.04. > > I get bad results when saving images after Gimp converts the colormap. > Its described here: > > http://bugzilla.gnome.org/show_bug.cgi?id=567551 > > The lcms author and Sven Neumann looked into it and concluded it is > not a fault of the Gimp, but rather it is something wrong in the > original image. Images have Adobe1998 colormap embedded, but > apparently that is a mistake. I don't know how they can tell what the > colormap is, and I don't understand why the original image looks fine > in GQView but it does not look fine after editing in the Gimp. If I > bring the original image into Gimp and refuse Gimp's invitation to > convert the colormap, and save the image, it is displayed fine in > GQView. But if Gimp resets the colormap in any way, the image looks > bad. That's because the original color profile incorrectly specifies the meaning of the colors; garbage in, garbage out. > > I just don't get it. > > On a practical level, what is a user supposed to do? > > 1. How am I supposed to know if the wrong colormap is embedded in an image? > > 2. How can I follow Sven's advice to "unset" the colormap? In Gimp > menus, I find only tools to convert or set the colormap, but not to > unset it. > First: you are not talking about colormaps (that is an entire different issue, related to indexed images such as GIF. You are talking about ICC color profiles. 1. Image Properties (ALT-Enter) has a tab devoted to describing the ICC profile. 2. I would guess you should try to assign the default sRGB profile to this image -- as all 'dumb' (ICC-unaware) programs will display images as if they are sRGB, because most monitors approximate sRGB. David
_______________________________________________ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
