Probability-based coding mode prediction for H.264/AVC

Author

Zhao, Tiesong ; Wang, Hanli ; Kwong, Sam ; Hu, Sudeng

Author_Institution

Dept. of Comput. Sci., City Univ. of Hong Kong, Hong Kong, China

fYear

2010

fDate

26-29 Sept. 2010

Firstpage

3389

Lastpage

3392

Abstract

Fast mode decision (FMD) algorithm aims to reduce the computational complexity of video encoders, especially for H.264/AVC, and meanwhile keep the coding efficiency. It is necessary for coding high resolution sequences, such as standard definition (SD) or high definition (HD) sequences. In this paper, an efficient algorithm is proposed to speed up inter-mode decision for H.264/AVC. Firstly, for a macroblock (MB) being coded, with modes of neighboring blocks, a probability model is utilized to build up an optimal encoding mode list; after that, rate-distortion (RD) cost-based early termination is employed to skip unnecessary inter-modes. Simulation results demonstrate that, the proposed algorithm could achieve significant encoding time saving for QCIF/CIF and SD/HD sequences, meanwhile with almost the same RD performance as the original encoder.

Keywords

probability; video coding; H.264/AVC; computational complexity; fast mode decision algorithm; intermode decision; macroblock; optimal encoding mode list; probability based coding mode prediction; probability model; rate distortion cost based early termination; video encoder; Automatic voltage control; Encoding; High definition video; Image coding; Prediction algorithms; Software; Video sequences; H.264/AVC; mode decision; neighboring prediction; probability model;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing (ICIP), 2010 17th IEEE International Conference on

Conference_Location

Hong Kong

ISSN

1522-4880

Print_ISBN

978-1-4244-7992-4

Electronic_ISBN

1522-4880

Type

conf

DOI

10.1109/ICIP.2010.5652737

Filename

5652737