Re: [Gimp-developer] Re: Some questions
Am Sonntag 13 Februar 2005 21:27 schrieb Bob Friesenhahn: > None of these metadata types has anything to do with embedding ICC > profiles in JFIF JPEG files. Hello Bob, that's true, but the icc profiles are may be stored in a similar way, at least icc is listed here: http://www.ozhiker.com/electronics/pjmt/jpeg_info/acronyms.html It's also a good recource of image file specs (jpeg tiff metadata and Adobe PS related stuff): http://www.ozhiker.com/electronics/pjmt/jpeg_info/index.html Kind regards Gerhard ___ Gimp-developer mailing list Gimp-developer@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
Re: [Gimp-developer] Re: Some questions
On Sun, 13 Feb 2005 [EMAIL PROTECTED] wrote: Quoting Jordi Canton <[EMAIL PROTECTED]>: Thank you John, I have hust checked that code and compared it to the actual GIMP jpeg part. As I can see, actually Gimp does not support the embedding of ICC profiles in JPEG files. Hi. I'm actually working on getting such things into Inkscape now, and have been looking into details on things. Just to let you know... there are a few different ways things might be embedded. In general they can get three different types of metadata: EXIF, XMP and IPTC. (I'm just getting up to speed on EXIF and IPTC and with jpeg, since my initial focus was with SVG and XMP). None of these metadata types has anything to do with embedding ICC profiles in JFIF JPEG files. Bob == Bob Friesenhahn [EMAIL PROTECTED] http://www.simplesystems.org/users/bfriesen ___ Gimp-developer mailing list Gimp-developer@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
Re: [Gimp-developer] Re: Some questions
Jon Cruz wrote: > Just to let you know... there are a few different ways things might be > embedded. > In general they can get three different types of metadata: EXIF, XMP and IPTC. > (I'm just getting up to speed on EXIF and IPTC and with jpeg, since my initial > focus was with SVG and XMP). GIMP is actually pretty far along toward dealing with this: see http://wilber.gimp.org/~raphael/metadata/ and a lot of related discussion in the archives of the list. Best, -- Bill __ __ __ __ Sent via the CNPRC Email system at primate.ucdavis.edu ___ Gimp-developer mailing list Gimp-developer@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
Re: [Gimp-developer] Re: Some questions
Quoting Jordi Canton <[EMAIL PROTECTED]>: > > > Thank you John, I have hust checked that code and compared it to the > actual GIMP jpeg part. As I can see, actually Gimp does not support the > embedding of ICC profiles in JPEG files. > Hi. I'm actually working on getting such things into Inkscape now, and have been looking into details on things. Just to let you know... there are a few different ways things might be embedded. In general they can get three different types of metadata: EXIF, XMP and IPTC. (I'm just getting up to speed on EXIF and IPTC and with jpeg, since my initial focus was with SVG and XMP). XMP is Adobe's new way to embed metadata in files. They've based it on standards, and seem to be trying to play nice with everyone. It uses RDF for the "how" to store data, and then gets into details of "what" to store. Additionally, even IPTC data is getting into XMP. http://www.adobe.com/products/xmp/main.html The spec itself is at http://partners.adobe.com/public/developer/en/xmp/sdk/xmpspecification.pdf Currently page 75 covers embedding XMP in Jpeg. And this might lend a little insight http://support.adobe.com/devsup/devsup.nsf/docs/53348.htm I'm not sure how much current tools are using those, but its adoption is speeding up. Oh, and I know I've seen the image thumbnail show up in XMP for a while now. ___ Gimp-developer mailing list Gimp-developer@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
Re: [Gimp-developer] Re: Some questions
On Sunday 13 February 2005 08:58, Jordi Canton wrote: > >You can embed ICC profiles in JPEG files. The lcms distribution > >contains code to insert and extract profiles: check the sources > > for jpegicc and friends. > > Thank you John, I have hust checked that code and compared it to > the actual GIMP jpeg part. As I can see, actually Gimp does not > support the embedding of ICC profiles in JPEG files. > > Is there any official mantainer of this part?. I can try to modify > this part myself and submit a patch, but I don't want to interfere > with anyone's work. Submit a properly commented patch to bugzilla - in bugzilla.gnome.org. That is teh way to go, and not interfering in anyone's work - regardless of anyone being more or less officially in charge of certain partts of the program. Once filed in bugzilla, your patch will be looked upon by teh core developers - revisons might get asked - and if it is approved, it will be commited by the developers themselves, ensuring no conflicts happen. And of course, you as anyone else, are mostly welcome to post usefull patches to bugzilla - It is not meant only for reporting problems, but also for feature requests and code management. Regards, JS -><- > > Jordi > ___ Gimp-developer mailing list Gimp-developer@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
[Gimp-developer] Re: Some questions
You can embed ICC profiles in JPEG files. The lcms distribution contains code to insert and extract profiles: check the sources for jpegicc and friends. Thank you John, I have hust checked that code and compared it to the actual GIMP jpeg part. As I can see, actually Gimp does not support the embedding of ICC profiles in JPEG files. Is there any official mantainer of this part?. I can try to modify this part myself and submit a patch, but I don't want to interfere with anyone's work. Jordi ___ Gimp-developer mailing list Gimp-developer@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
