W3PhotoVocabs

This page describes the vocabs planned to be used for the W3PhotoSpec project.

For hints on implementation and explaination, try http://lists.w3.org/Archives/Public/www-archive/2004Jan/0096.html

The spec is here: http://www.bnowack.de/w3photo/pages/image_vocabs

Related links: WWW2004, chump search for WWW2004; project specification - W3PhotoSpec; some preliminary vocab ideas ImageDescriptionRdfExamples; project UI discussions ImageDescriptionUserInterface.

Vocabularies for w3photo project

Title/Description	Documentation	Related
Image Regions	Morten's mail	(see related vocabs: Jim Ley's SVG vocab, Mindswap image and multimedia vocab)	http://www.w3.org/2004/02/image-regions# (was http://jibbering.com/vocabs/image/#) (schema is not yet up there: see http://www.bnowack.de/w3photo/	Annotea annotation schema	Annotea Annotation Schema	issue: annotator as Person?
Creative Commons	Creative Commons Website,specific license,using RDF for CC licenses
FOAF	FOAF vocab documentation	note: for Image, depicts (whole image), Person, mbox_sha1sum, name, thumbnail?
Dublin Core	Dublin Core Metadata Element Set
Jen Golbeck/Mindswap conference Ontology	comments from Nick Gibbins, followup from Jen	[http://www.w3.org/2002/12/cal/ical RDF iCal vocab

Some example documents smallest example paths example example without paths

Required properties and Classes for the w3photo project data

'MUST': means that the RDF must validate and must contain content (i.e. no empty tags).

'MAY': means that this property/classes may be supported by tools. In RDF data there could always be extra properties and classes in a file; this document is intended for use by implementors who want to be sure that their data can be used usefully in the w3photo project specifically.

There MUST be a link from the metadata about the page to the Image; the metadata about the image MUST be contained within the document itself

 <rdf:Description rdf:about=''>
  <an:annotates rdf:resource='http://www94.web.cern.ch/WWW94/Images/ClosingPanel/Closingpanel5.gif'/>

There MUST be an an:author property, which MUST link to a foaf:Person or foaf:Agent. All Persons and Agents MUST have an identifying property, one of foaf:mbox_sha1sum, foaf:homepage, foaf:weblog, foaf:page, or foaf:name (name is the worst case option)

  <an:author>
   <foaf:Person>
    <foaf:mbox_sha1sum>289d4d44325d0b0218edc856c8c3904fa3fd2875</foaf:mbox_sha1sum>
   </foaf:Person>
  </an:author>

There MUST be a date created for the metadata

  <an:created>2004-01-25T20:04:50Z</an:created>

There MUST be license and rights properties for the metadata; cc:Agent MUST have some identifying property, one of foaf:mbox_sha1sum, foaf:homepage, foaf:weblog, foaf:page, or foaf:name (name is the worst case option) (dc:title here???)

   <cc:license rdf:resource="http://creativecommons.org/licenses/by-nc-sa/1.0/" />
   <dc:rights>
     <cc:Agent>
       <foaf:name>Libby Miller</foaf:name>
       <foaf:mbox_sha1sum>289d4d44325d0b0218edc856c8c3904fa3fd2875</foaf:mbox_sha1sum>
     </cc:Agent>
   </dc:rights>
 </rdf:Description>

There MUST be license and rights properties for the Image; cc:Agent MUST have some identifying property, one of foaf:mbox_sha1sum, foaf:homepage, foaf:weblog, foaf:page, or foaf:name (name is the worst case option)

 <foaf:Image rdf:about='http://www94.web.cern.ch/WWW94/Images/ClosingPanel/Closingpanel5.gif'>
    <cc:license rdf:resource="http://creativecommons.org/licenses/by-nc-sa/1.0/" />
    <dc:rights>
      <cc:Agent>
        <dc:title>CERN photo</dc:title>
        <foaf:homepage rdf:resource="http://www.cern.ch/"/>
      </cc:Agent>
    </dc:rights>

There MUST be a link to the creator of the foaf:Image; all foaf:Persons and foaf:Agents MUST have an identifying property, one of foaf:mbox_sha1sum, foaf:homepage, foaf:weblog, foaf:page, or foaf:name (name is the worst case option) (dc:title here???)

  <dc:creator> 
   <foaf:Agent>
    <foaf:homepage rdf:resource="http://www.cern.ch/"/>
    <foaf:name>CERN</foaf:name>
   </foaf:Agent>
  </dc:creator>

There MUST be a creation date (and optionally time) for the Image

  <dc:date>1994-05-27</dc:date>

There MUST be a link from the Image to the event using the event's homepage (url)

  <foaf:depicts>
    <conf:Event>
      <rdfs:Class rdf:resource="http://www.w3.org/2002/12/cal/ical#Vevent"/>
      <ical:url rdf:resource='http://www94.web.cern.ch/WWW94/'/>
    </conf:Event>
  </foaf:depicts>
 </foaf:Image>

Optional properties and Classes for the w3photo project data

Additionally, one can talk about the parts of an image

There MAY be image:width and image:height properties
There MAY be image:hasRegion properties
If image:hasRegion is present, image:coords property MUST be present

 <foaf:Image rdf:about='http://www94.web.cern.ch/WWW94/Images/ClosingPanel/Closingpanel5.gif'>
  <jim:width>535</jim:width>
  <jim:height>367</jim:height>
  <image:hasRegion>
   <image:Rectangle rdf:ID='p1'>
    <image:coords>6,106 84,181</image:coords>

If image:hasPart is present, dc:description for that part MAY be present

    <dc:description>Joseph Hardin looking interested</dc:description>

If image:hasPart is present, image:regionDepicts MAY be present
If image:regionDepicts is present and depicts a foaf:Person or Agent, an identifying property MUST be present, one of foaf:mbox_sha1sum, foaf:homepage, foaf:weblog, foaf:page, or foaf:name (name is the worst case option)

    <image:regionDepicts>
     <foaf:Person>
       <foaf:name>Joseph Hardin</foaf:name>
       <foaf:mbox_sha1sum>1af3d5e34a12435a835c5e51a687c93707114f0b</foaf:mbox_sha1sum>
     </foaf:Person>
    </image:regionDepicts>
   </image:Rectangle>
  </image:hasRegion>
 </foaf:Image>

Finally one can also talk about what the image as a whole depicts, and it's description:

There MAY be a description for the image as a whole

  <dc:description>The middle of the closing panel: from left to right: Dr. 
Joseph Hardin, NCSA; Robert Cailliau, CERN; Tim Berners-Lee, CERN; Dan Connolly, 
HaL Software. Copyright CERN (CERN Photo)</dc:description>

There MAY be one or more foaf:depicts properties present, referring to the whole image. If foaf:depicts is present and depicts a foaf:Person or Agent, an identifying property MUST be present, one of foaf:mbox_sha1sum, foaf:homepage, foaf:weblog, foaf:page, or foaf:name (name is the worst case option)

 <foaf:Image rdf:about='http://www94.web.cern.ch/WWW94/Images/ClosingPanel/Closingpanel5.gif'>

  <foaf:depicts>
   <foaf:Person>
    <mbox_sha1sum>94b6eb0c835f928c5ed565dc3ed1a355ac1b41e5</mbox_sha1sum>
    <name>Dan Connolly</name>
   </foaf:Person>
  </foaf:depicts>

 </foaf:Image>

The namespace declarations:

<rdf:RDF
  xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
  xmlns:rdfs='http://www.w3.org/2000/01/rdf-schema#'
  xmlns:dc='http://purl.org/dc/elements/1.1/'
  xmlns:foaf='http://xmlns.com/foaf/0.1/'
  xmlns:image='http://www.w3.org/2004/02/image#'
  xmlns:an='http://www.w3.org/2000/10/annotation-ns#'
  xmlns:cc='http://web.resource.org/cc/'
  xmlns:conf='http://www.mindswap.org/~golbeck/web/www04photo.owl#'
  xmlns:ical='http://www.w3.org/2002/12/cal/ical#' 
  xmlns:jim='http://jibbering.com/vocabs/image/#'
 >

</rdf:RDF>

Issues:

namespace for regionDepicts needs to be put up at http://www.w3.org/2004/02/image-regions#
thumbnail/hasThumbnail? email from Morten to rdfweb-dev
location - not required as long as event url is present, but be good to sort it out
see bugs for greg to fix! :)
conference vocab and relationship to RDF iCal - url for event? homepage? (foaf:homepage has domain Agent, shoudl be broader. foaf:page would be appropriate but isn't an inverseFunctionalProperty. ical:url doesn't have any schema definition yet, but probably won't be an inverseFunctionalProperty.

Decided...

an:author vs dc:creator vs foaf:maker and foaf:Person
creative commons - how important is date of birth? can we use foaf:Person?
dealing with depictions of subevents without homepages (identfying events)
acceptable ways of identifying people