Algorithmic Optimization for H.264 Deblocking Filter on Portable Devices

Author

Ren, J. ; Kehtarnavaz, N.

Author_Institution

Univ. of Texas, Dallas

fYear

2007

fDate

20-23 June 2007

Firstpage

1

Lastpage

6

Abstract

Deblocking filters are used to reduce or eliminate blocking artifacts that appear when H.264/AVC is utilized for low bit rate video coding applications such as video conferencing, Considering that the H.264/AVC deblocking filter constitutes about one-third of the decoding time, in this paper, we present two optimization steps to reduce the computational complexity of this filter. These steps involve using the mode information of decoded macroblocks and the similarity among adjacent blocks. Experimental results show that these optimization steps significantly reduce the computational complexity with tolerable loss in video quality.

Keywords

computational complexity; decoding; filtering theory; optimisation; video coding; H.264 deblocking filter; H.264/AVC; adjacent blocks; algorithmic optimization; computational complexity; decoded macroblocks; low bit rate video coding; portable devices; video quality; Adaptive filters; Automatic voltage control; Bit rate; Code standards; Computational complexity; Decoding; Filtering; IEEE members; Video coding; Videoconference; Optimization of H.264/AVC deblocking filter; block similarity in video deblocking; mode selection in video deblocking;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 2007. ISCE 2007. IEEE International Symposium on

Conference_Location

Irving, TX

Print_ISBN

978-1-4244-1109-2

Electronic_ISBN

978-1-4244-1110-8

Type

conf

DOI

10.1109/ISCE.2007.4382168

Filename

4382168