Encoding-Assisted Temporal Direct Mode Decision for B Pictures in H.264/AVC

DOI

10.2991/icista.2013.28How to use a DOI?

Keywords

Direct mode decision, H.264/AVC, Prediction motion vector, Rate-distortion optimization (RDO)

Abstract

This paper proposes an encoding-assisted temporal DIRECT mode decision algorithm for H.264/AVC inter bi-predictive (B) frame video sequences to improve the coding efficiency. In the proposed algorithm, we employ motion vectors (MVs) of co-located block and its eight neighboring blocks for DIRECT mode decision. In addition, the weight selection for bidirectional prediction is also considered. The best MV and weight to minimize the sum of absolute prediction error is selected for DIRECT mode decision. The experimental results reveal that the proposed algorithm achieves average 0.1 dB PSNR gain or equivalently average 1.6% bit-rate reduction, compared to the conventional DIRECT mode coding that only uses the MV of the co-located MB for DIRECT mode decision.

Copyright

© 2013, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yanneng Fang
AU  - Yinyi Lin
AU  - Hui-Jane Hsieh
PY  - 2013/06
DA  - 2013/06
TI  - Encoding-Assisted Temporal Direct Mode Decision for B Pictures in H.264/AVC
BT  - Proceedings of the 2013 International Conference on Information Science and Technology Applications (ICISTA-2013)
PB  - Atlantis Press
SP  - 138
EP  - 142
SN  - 1951-6851
UR  - https://doi.org/10.2991/icista.2013.28
DO  - 10.2991/icista.2013.28
ID  - Fang2013/06
ER  -