Complexity of optimized H.26L video decoder implementation

An analysis of computational complexity is presented for an H.26L video decoder, based on extensive experiments on a general-purpose processor. In addition, platform-independent techniques to optimize an H.26L decoder implementation are given. Comparisons are carried out between our highly optimized...

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Veröffentlicht in:	IEEE transactions on circuits and systems for video technology 2003-07, Vol.13 (7), p.717-725
Hauptverfasser:	Lappalainen, V., Hallapuro, A., Hamalainen, T.D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Bandwidth Circuits Coding, codes Complexity Computational complexity Decoders Decoding Detection, estimation, filtering, equalization, prediction Exact sciences and technology Frames Image processing Image sequences Information, signal and communications theory ISO standards Microprocessors Performance analysis Signal and communications theory Signal processing Signal, noise Standardization Telecommunication standards Telecommunications and information theory Video coding Visual
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Beschreibung
Zusammenfassung:	An analysis of computational complexity is presented for an H.26L video decoder, based on extensive experiments on a general-purpose processor. In addition, platform-independent techniques to optimize an H.26L decoder implementation are given. Comparisons are carried out between our highly optimized version of H.26L, the public reference implementation of H.26L, and a highly optimized H.263+ implementation. Both QCIF and CIF-sized image sequences are used. The results show that with equal visual quality, the bit-rate savings range from 28% to 58%, while the frame decoding speed of H.26L is about 11% better than that of a highly optimized H.263+.
ISSN:	1051-8215 1558-2205
DOI:	10.1109/TCSVT.2003.814968