[cc-community] detecting cc license on PNG
Mike Linksvayer
ml at creativecommons.org
Sat Mar 8 20:32:43 EST 2008
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
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