ADAPTIVE PRUNED 4 × 4 DCT ALGORITHM FOR H.264

Author

Dongming Zhang ; Shouxun Lin ; Yongdong Zhang

Author_Institution

Inst. of Comput. Technol., Chinese Acad. of Sci., Beijing

fYear

2006

fDate

29-31 Aug. 2006

Firstpage

15

Lastpage

15

Abstract

A new integer 4times4 transform is adopted in the new video coding standard H.264/AVC. To reduce the computation load of the new transform, the SSAVT model for 8times8 transform is applied into H.264 4times4 transform with some modifications. Then, three classes of pruned block are defined and the corresponding simplified butterfly computation processes are designed. Furthermore, a fast DCT algorithm is proposed, with which we can identify the class of pruned block, so as to adopt simplified computation, with the help of modified model for 4times4 transform. Simulation results show that the proposed DCT algorithm saves about average 55% computation of DCT compared with full computation

Keywords

code standards; discrete cosine transforms; transform coding; video coding; H.264/AVC; adaptive pruned DCT algorithm; video coding standard; Acceleration; Approximation algorithms; Automatic voltage control; Bit rate; Computers; Discrete cosine transforms; Encoding; Motion estimation; Process design; Video coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Telecommunications, , 2006. ICDT '06. International Conference on

Conference_Location

Cote d´Azur

Print_ISBN

0-7695-2650-0

Type

conf

DOI

10.1109/ICDT.2006.13

Filename

1698462