標題: Fast Bi-Directional Prediction Selection in H.264/MPEG-4 AVC Temporal Scalable Video Coding
作者: Lin, Hung-Chih
Hang, Hsueh-Ming
Peng, Wen-Hsiao
資訊工程學系
電子工程學系及電子研究所
Department of Computer Science
Department of Electronics Engineering and Institute of Electronics
關鍵字: Bi-directional prediction;bi-directionally predictive frame;encoder optimization;hierarchical prediction structure;H.264/MPEG-4 AVC scalable video coding;temporal scalability
公開日期: 1-十二月-2011
摘要: In this paper, we propose a fast algorithm that efficiently selects the temporal prediction type for the dyadic hierarchical-B prediction structure in the H.264/MPEG-4 temporal scalable video coding (SVC). We make use of the strong correlations in prediction type inheritance to eliminate the superfluous computations for the bi-directional (BI) prediction in the finer partitions, 16 x 8/8 x 16/8 x 8, by referring to the best temporal prediction type of 16 x 16. In addition, we carefully examine the relationship in motion bit-rate costs and distortions between the BI and the uni-directional temporal prediction types. As a result, we construct a set of adaptive thresholds to remove the unnecessary BI calculations. Moreover, for the block partitions smaller than 8 x 8, either the forward prediction (FW) or the backward prediction (BW) is skipped based upon the information of their 8 x 8 partitions. Hence, the proposed schemes can efficiently reduce the extensive computational burden in calculating the BI prediction. As compared to the JSVM 9.11 software, our method saves the encoding time from 48% to 67% for a large variety of test videos over a wide range of coding bit-rates and has only a minor coding performance loss.
URI: http://dx.doi.org/10.1109/TIP.2011.2156802
http://hdl.handle.net/11536/14927
ISSN: 1057-7149
DOI: 10.1109/TIP.2011.2156802
期刊: IEEE TRANSACTIONS ON IMAGE PROCESSING
Volume: 20
Issue: 12
起始頁: 3508
結束頁: 3523
顯示於類別:期刊論文


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  1. 000297340300017.pdf