T3.2 Addressing

The Semantic Web family of RDF-related standards provides a rich set
of technologies to describe and serialize metadata over de Web.  The
connection between Web-based metadata units and the fragment of the
audiovisual object is, however, still an underdeveloped topic.  On the
Web, Uniform Resource Identifiers (URIs) are the only building block
for making such a connection.

Often, particular regions of an image or particular sequences of a
video need to be localize and uniquely identified in order to be used
as subject or object resource in an RDF annotation. However, the
current Web architecture does not provide a means for uniquely
identifying sub-parts of media assets, in the same way that the
fragment identifier in the URI can refer to part of an HTML or XML
document. Actually, for almost all other media types, the semantics of
the fragment identifier has not yet been defined or is not commonly
accepted.  Providing an agreed upon way to localize sub-parts of
multimedia objects (e.g. sub-regions of images, temporal sequences of
videos or tracking moving objects in space and in time) is
fundamental.  ASIMOV will work in close cooperation with W3C to
develop such a URI scheme in a platform, codec and medium-independent
manner.

Given such a URI scheme, ASIMOV will develop the required (indirect)
metadata addressing schemes develop interoperable descriptions for
both RDF-based and MPEG-based metadata applications.


For Work package description 3 (page 56)

Description of work 

T3.1 Video annotation, video metadata 

CWI will work on innovative and intelligent search paradigms based on
meaningful relationships among audiovisual content, and on low-barrier
user interfaces for ontology-mediated tagging of Web-based content.


FUB will work on annotation levels, personnel, group oriented, content
driven, context driven, Tagging in video with respect to searching;
the deliverable will be methods and specifications for Annotation and
Tagging in video based material.

T3.2 Addressing 

CWI will work in close cooperation with W3C on a URI-based scheme for
addressing spatio-temporal fragments of audiovisual content on the
Web.