TY - GEN
T1 - Fast mode selection scheme for H.264/AVC inter prediction based on statistical learning method
AU - Ma, Weipeng
AU - Yang, Shuyuan
AU - Gao, Li
AU - Pei, Chaoke
AU - Yan, Shefeng
PY - 2009
Y1 - 2009
N2 - H.264 adopts variable block size motion estimation and Rate-Distortion- Optimization based mode decision to improve video quality and compression ratio. These techniques have made H.264 better than other existing video coding standards. However, they are computationally intensive and time-consuming. In this paper, a fast mode selection scheme is proposed for H.264 inter prediction. Firstly, the first few frames are encoded and thresholds are acquired through a statistical learning process. Then, for the rest of frames, motion estimation and mode decision are only performed for the candidate modes which are selected with the proposed fast mode selection scheme. The proposed approach is applicable to all existing motion search algorithms. Besides, thresholds are on-line computed separately for each sequence. Results show that the total encoding time is saved by 57.2% on average with negligible video quality degradation.
AB - H.264 adopts variable block size motion estimation and Rate-Distortion- Optimization based mode decision to improve video quality and compression ratio. These techniques have made H.264 better than other existing video coding standards. However, they are computationally intensive and time-consuming. In this paper, a fast mode selection scheme is proposed for H.264 inter prediction. Firstly, the first few frames are encoded and thresholds are acquired through a statistical learning process. Then, for the rest of frames, motion estimation and mode decision are only performed for the candidate modes which are selected with the proposed fast mode selection scheme. The proposed approach is applicable to all existing motion search algorithms. Besides, thresholds are on-line computed separately for each sequence. Results show that the total encoding time is saved by 57.2% on average with negligible video quality degradation.
KW - H.264/AVC
KW - Inter mode decision
KW - Video coding
UR - http://www.scopus.com/inward/record.url?scp=70449579386&partnerID=8YFLogxK
U2 - 10.1109/ICME.2009.5202425
DO - 10.1109/ICME.2009.5202425
M3 - Conference contribution
AN - SCOPUS:70449579386
SN - 9781424442911
T3 - Proceedings - 2009 IEEE International Conference on Multimedia and Expo, ICME 2009
SP - 17
EP - 20
BT - Proceedings - 2009 IEEE International Conference on Multimedia and Expo, ICME 2009
T2 - 2009 IEEE International Conference on Multimedia and Expo, ICME 2009
Y2 - 28 June 2009 through 3 July 2009
ER -