BeTrIS: an index system for MPEG-7 streams

  • Authors:

  • Andrea Kofler-Vogt;Harald Kosch;Joerg Heuer;André Kaup

  • Affiliations:

  • Department of Information Technology, University Klagenfurt, Klagenfurt, Austria;Department of Information Technology, University Klagenfurt, Klagenfurt, Austria;Siemens AG, Munich, Germany;Chair of Multimedia Communications and Signal Processing, University of Erlangen-Nuremberg, Erlangen, Germany

  • Venue:
  • EURASIP Journal on Applied Signal Processing
  • Year:
  • 2006

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Abstract

The ISO/IEC Motion Picture Group (MPEG) issued in 2002 a standard, called MPEG-7, which enables the content description of multimedia data in XML. The standard supports applications to exchange, identify, and filter multimedia contents based on MPEG-7 descriptions. However, especially mobile applications that deal with MPEG-7 suffer from limited bandwidth, low computational power, and limited battery life. In this document, we describe an index system adopted from database systems that allows filter mechanisms and random access to encoded MPEG-7 streams and which overcome the limitation of the network and the consuming terminal. Encoding is applied in order to reduce the data rate of the XML documents to be transmitted. The indexed parts of the encoded streams can be accessed without the need to deserialize the complete stream. Furthermore, the system is evaluated and results of the experimental evaluation are discussed.