A Typed DOM for the Management of MPEG-7 Media Descriptions

  • Authors:

  • Utz Westermann;Wolfgang Klas

  • Affiliations:

  • Faculty of Computer Science, University of Vienna, Austria;Faculty of Computer Science, University of Vienna, Austria

  • Venue:
  • Multimedia Tools and Applications
  • Year:
  • 2005

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Abstract

MPEG-7 is a very promising standard for the description of multimedia content. Certainly, means for the adequate management of large amounts of MPEG-7 media descriptions are needed in the near future. Essentially, MPEG-7 media descriptions are XML documents following media description schemes and descriptors defined with an extension of XML Schema named MPEG-7 DDL. However, XML database solutions available today are not suitable for the management of MPEG-7 media descriptions. They typically neglect type information available with the definitions of description schemes and descriptors and represent the basic contents of media descriptions as text. But storing non-textual multimedia data typically contained in media descriptions such as melody contours and object shapes textually and forcing applications to access and process such data as text is neither adequate nor efficient. In this paper, we therefore propose the Typed Document Object Model (TDOM), a data model for XML documents that can benefit from available schema definitions and represent the basic contents of a document in a typed fashion. Through these typed representations, applications can access and work with multimedia data contained in MPEG-7 media descriptions in way that is appropriate to the particular type of the data. Thereby, TDOM constitutes a solid foundation for an XML database solution enabling the adequate management of MPEG-7 media descriptions.