Title :
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
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;
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
DOI :
10.1109/PCS.2009.5167410
