TY - JOUR
T1 - Fast intermode decision algorithm based on general and local residual complexity in H.264/AVC
AU - Kim, Seongwan
AU - Lim, Kyungmin
AU - Kim, Jae Hyun
AU - Lee, Sangyoun
PY - 2013
Y1 - 2013
N2 - The state-of-the-art video coding standard H.264/AVC achieves significant coding performance by adopting variable block sizes for motion estimation (ME) and mode decision. However, this technique brings out high computational complexity since the optimal mode is determined by exhaustively performing rate-distortion optimization (RDO) on each coding mode with different block sizes. In this paper, the fast intermode decision algorithm is proposed to reduce the computational complexity. Based on the high correlation between the residual error of ME and the optimal block size, general residual complexity (GRC) and local residual complexity (LRC) are defined. According to MB activity evaluated on GRC and LRC, candidate intermodes are determined and RDO processes are only performed on selected intermodes. The experimental results demonstrate that the proposed algorithm achieves time saving by 63% on average with negligible degradation of coding efficiency.
AB - The state-of-the-art video coding standard H.264/AVC achieves significant coding performance by adopting variable block sizes for motion estimation (ME) and mode decision. However, this technique brings out high computational complexity since the optimal mode is determined by exhaustively performing rate-distortion optimization (RDO) on each coding mode with different block sizes. In this paper, the fast intermode decision algorithm is proposed to reduce the computational complexity. Based on the high correlation between the residual error of ME and the optimal block size, general residual complexity (GRC) and local residual complexity (LRC) are defined. According to MB activity evaluated on GRC and LRC, candidate intermodes are determined and RDO processes are only performed on selected intermodes. The experimental results demonstrate that the proposed algorithm achieves time saving by 63% on average with negligible degradation of coding efficiency.
UR - http://www.scopus.com/inward/record.url?scp=84887049933&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84887049933&partnerID=8YFLogxK
U2 - 10.1186/1687-5281-2013-30
DO - 10.1186/1687-5281-2013-30
M3 - Article
AN - SCOPUS:84887049933
VL - 2013
JO - Eurasip Journal on Image and Video Processing
JF - Eurasip Journal on Image and Video Processing
SN - 1687-5176
M1 - 30
ER -