A good start would be to identify some use cases where having EXIF translated into RDF is useful. Playing devil's advocate, one can say it is just a trivial syntactic translation of one format to the other. What services can be supported once it is in RDF? Give examples. Mike ________________________________ From: Christian Halaschek-Wiener [mailto:halasche@cs.umd.edu] Sent: Tuesday, January 17, 2006 4:52 PM To: Jacco van Ossenbruggen; Giorgos Stamou; Vassilis Tzouvaras; Jeff Pan; Raphaël Troncy Cc: SWBPD list Subject: [MM] Status update for 2nd deliverable... Hi, I wanted to give you all some status on the EXIF section I'm working on for the 2nd deliverable. After looking around, I found that there are two EXIF ontologies (RDFS) currently publicly available. These include 1) http://www.w3.org/2003/12/exif/ - this is develped by Kanzaki.com and was moved to a W3C site a while back. - it is also the one we use in PhotoStuff 2) http://nwalsh.com/rdf/ - develped by Norm Walsh Semantically both are very similar..they are essentially straightforward encodings of the EXIF metadata tags for images (see http://www.exif.org/Exif2-2.PDF). There are some syntactic differences, but again they are quite similar. Both developers provide an EXIF conversion service: 1) Kanzaki - http://www.kanzaki.com/test/exif2rdf - It is essentially a simple web page, in which you can paste and image URL to an EXIF image and it will extract the EXIF metadata and convert it to RDF. 2) Norm Walsh - http://www.nwalsh.com/java/jpegrdf/ - He provides a Java program that among other things, will read an EXIF image and covert the metadata to RDF I haven't yet compared the output of the converters in detail yet, however upon first glance they seem similar. As a side note, I also came across http://jigsaw.w3.org/rdfpic/ which will embed RDF in the EXIF header of JPEG files. So, given this, I have a question...exactly how do we want to proceed and exactly what do we want to show in the 2nd deliverable. Any feedback would be great. Cheers, Chris -- Christian Halaschek-Wiener PhD Student, Dept. of Computer Science GRA, MINDSWAP Research Group, University of Maryland, College Park Web page: http://www.mindswap.org/~chrisReceived on Tuesday, 17 January 2006 17:20:57 UTC
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