An early mode decision algorithm for H.264 optimization

Author

Pei, Chaoke ; Yang, Shuyuan ; Gao, Li ; Ma, Weipeng

Author_Institution

Grad. Univ. of Chinese Acad. of Sci., Beijing, China

fYear

2009

fDate

6-8 May 2009

Firstpage

1

Lastpage

4

Abstract

The H.264 standard provides significantly high compression efficiency with multiple block size Motion Estimation adopted. However, the encoding time of Motion Estimation and Discrete Cosine Transform is dramatically increased as a result. An early mode decision algorithm is proposed in this paper to control the computation complexity. It derives a threshold to make mode decisions in advance. Experimental results show that 75.11% encoding time and 84.25% Motion estimation time can be saved on average with little PSNR dropped.

Keywords

computational complexity; data compression; discrete cosine transforms; motion estimation; optimisation; video coding; H.264; computation complexity; discrete cosine transform; early mode decision algorithm; motion estimation; optimization; video compression; Acoustics; Chaos; Cost function; Digital systems; Discrete cosine transforms; Encoding; Motion detection; Motion estimation; Quantization; Statistics; Gaussian distribution; H.264/AVC; all-zero block; early mode decision; fast video coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Picture Coding Symposium, 2009. PCS 2009

Conference_Location

Chicago, IL

Print_ISBN

978-1-4244-4593-6

Electronic_ISBN

978-1-4244-4594-3

Type

conf

DOI

10.1109/PCS.2009.5167410

Filename

5167410