Wavelet-packet-based video coding in parallel and distributed environments

Manfred Feil; Andreas Uhl

doi:10.1117/12.420803

29 March 2001 Wavelet-packet-based video coding in parallel and distributed environments

Manfred Feil, Andreas Uhl

Proceedings Volume 4313, Media Processors 2001; (2001) https://doi.org/10.1117/12.420803
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

This paper deals with different aspects of wavelet packet (WP) based video coding. In introducing experiments we show that WP decomposition and specifically WP decomposition in conjunction with the best basis algorithm are superior in terms of quality as compared to the standard discrete wavelet transform but show prohibitive computational demands (especially for real-time applications). The main contribution of our work is therefore the examination of three parallelization methods for WP based video coding. Two inter-frame based parallelization methods (group-of-picture parallelization and frame-by-frame parallelization) exploit the properties of a videostream (full independence between GOPs and rather high independence between single frames) better than inter-frame parallelization, but show a higher demand in terms of memory and don't respect the frame order defined by the input video stream. We highlight the advantages and drawbacks of all three methods and show experimental results obtained on a Siemens hpcLine cluster and a Cray T3E.

Citation Download Citation

Manfred Feil and Andreas Uhl "Wavelet-packet-based video coding in parallel and distributed environments", Proc. SPIE 4313, Media Processors 2001, (29 March 2001); https://doi.org/10.1117/12.420803

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