[cc-community] detecting cc license on PNG
Lucas Gonze
lucas.gonze at gmail.com
Tue Mar 11 23:06:32 EDT 2008
Perfect.
Thanks, Jon.
On Sat, Mar 8, 2008 at 7:29 PM, Jon Phillips <jon at creativecommons.org> wrote:
>
>
> On Sat, 2008-03-08 at 17:32 -0800, Mike Linksvayer wrote:
> > On Sat, Mar 8, 2008 at 5:13 PM, Lucas Gonze <lucas.gonze at gmail.com> wrote:
> > > Is there an existing method for PNG creators to mark their images such
> > > that a simple program can detect the CC license?
> >
> > http://wiki.creativecommons.org/XMP
> > http://en.wikipedia.org/wiki/Extensible_Metadata_Platform#Location_in_File_Types
> >
> > > I can imagine a method to do it -- a bit-for-bit comparison of a
> > > designated portion of the image -- but I'd rather not start from
> > > scratch.
> >
> > You mean encoded in the image data? Not that I know of. It would be
> > easy to do (assuming it doesn't need to be robust, in which case you
> > probably run into a watermarking patent minefield), but nearly
> > impossible to get any other software to care.
> >
> > Mike
> > _______________________________________________
> > cc-community mailing list
> > cc-community at lists.ibiblio.org
> > http://lists.ibiblio.org/mailman/listinfo/cc-community
>
> Actually, you should be able to use liblicense to read/write XMP in png
> file with liblicense:
>
> http://creativecommons.org/projects/liblicense
>
> Here is a lovely chart detailing how to support cc license embedding in
> different file types that Jason Kivlighn made last summer:
>
> http://wiki.creativecommons.org/Tracker_CC_Indexing
>
> Also, in reading this, I somewhat misplaced the need/hope to get more
> filetype support in new/different formats...
>
> Jon
>
> --
> Jon Phillips
> jon at creativecommons.org
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>
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