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Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Unequally protected SPIHT video codec for low bit rate transmission over highly error-prone mobile channels

Thornton, L. and Soraghan, J.J. and Kutil, R. and Chakraborthy, M. (2002) Unequally protected SPIHT video codec for low bit rate transmission over highly error-prone mobile channels. Signal Processing: Image Communication, 17 (4). pp. 327-335. ISSN 0923-5965

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Abstract

The three-dimensional set partitioning in hierarchical trees (3D-SPIHT) wavelet-based codec is presented for robust mobile transmission of low bit rate video data under severe channel conditions. The error resilience of the codec is improved by the insertion of synchronisation points in the compressed bitstream. The scalable bitstream is amenable to unequal error protection (UEP) and a non-uniform channel coding scheme is presented for the efficient protection of the data. The main advantage of the 3D-SPIHT is its robustness to errors in severely error-prone environments. The standard H.263, employing Annexes D, F and G, synchronisation points and an additional error-resilience technique, is used for a comparative performance with 3D-SPIHT. A UEP channel coding scheme is also presented for H.263. Results are obtained for the globally protected and the unequally protected compressed video streams after transmission over the TETRA PMR channel.