how does this process multi-frame images or movies? does it iterate over every pixel in every frame? maybe there is a more efficient way to generate unique ids that will not change when exif data is modified?
thanks again for your help, adam On Mon, May 5, 2008 at 1:31 AM, <[EMAIL PROTECTED]> wrote: > > but it still takes a really long time > > The signature is computed by iterating over every pixel in > the image. ImageMagick Studio distributes the Wizard Toolkit > (http://wizards-toolkit.org/script/digest.php) which includes a digest > program that efficiently returns a signature as RDF: > > <?xml version="1.0"?> > <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"; > xmlns:digest="http://www.wizards-toolkit.org/digest/1.0/";> > <rdf:Description rdf:about="image.png"> > <digest:modify-date>2008-04-25T20:19:02-04:00</digest:modify-date> > <digest:create-date>2008-04-25T20:19:02-04:00</digest:create-date> > <digest:timestamp>2008-04-26T12:25:47-05:00</digest:timestamp> > <digest:hash>SHA256</digest:hash> > > <digest:digest>78709afc0de69f51085675329dc44c8b475258c1e7fd29acea078347e641a020</digest:digest> > </rdf:Description> > </rdf:RDF> > > However, as you suggested, it will return a different signature if the EXIF > data is changed. > _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
