Complexity of optimized H.26L video decoder implementation

Author

Lappalainen, Ville ; Hallapuro, Antti ; Hämäläinen, Timo D.

Author_Institution

Nokia Res. Center, Tampere, Finland

Volume

13

Issue

7

fYear

2003

fDate

7/1/2003 12:00:00 AM

Firstpage

717

Lastpage

725

Abstract

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+.

Keywords

computational complexity; decoding; image sequences; video coding; H.263+; H.26L video decoder; computational complexity analysis; general-purpose processor; image sequences; Bandwidth; Circuits; Computational complexity; Decoding; ISO standards; Image sequences; Performance analysis; Standardization; Telecommunication standards; Video coding;

fLanguage

English

Journal_Title

Circuits and Systems for Video Technology, IEEE Transactions on

Publisher

ieee

ISSN

1051-8215

Type

jour

DOI

10.1109/TCSVT.2003.814968

Filename

1218202