IMPROVEMENT OF H.264 SKIP MODE

Kyohyuk Lee, Woojin Han, Tammy Lee

Abstract

H.264 (MPEG-4 AVC) is the state of the art international video coding standard which shows better coding efficiency compared to previous standards. This contribution is on the improvement of motion derivation process of H.264 SKIP mode. H.264 exploits temporal or spatial motion field correlation to derive current motion field. Temporal or spatial direct mode macroblock for B slice and skip mode macroblock for P slice are adopted for exploitation of motion field correlation. In general, H.264 SKIP mode macroblock has great impact on coding efficiency because about 30 ~ 70% of macroblocks are set as skip mode. SKIP mode macroblock derives one motion vector for whole 16x16 macroblock region from spatial correlation. In this contribution, we improved SKIP mode motion field further instead of setting one motion vector for 16x16 macroblock region. We split 16x16 macroblock into four 8x8 sub-partitions and set each sub-partition SKIP mode motion field separately. Experimental results showed average 2.05% and up to 18.63% bit rate reduction, especially higher coding efficiency in low bit rate condition.

References

  1. Thomas Wiegand, Gary J. Sullivan, Gisle Bjontegaard and Ajay Luthra, July 2003. Overview of the H.264/AVC Video Coding Standard. IEEE Transactions on Circuits and System for Video Technology, vol.13, no.7 pp.560-576.
  2. Alexis Michael Tourapis, Feng Wu and Shipeng Li, January, 2005. Direct Mode Coding for Bipredictive Slices in the H.264 Standard. IEEE Transactions on Circuits and System for Video Technology, vol.15, no.1 pp.119-126.
  3. Gisle Bjontegaard, April, 2001. Calculation of average PSNR differences between RD-curves. Video Coding Expert Group (VCEG), Doc. VCEG-M33, Bangkok, Thailand.
  4. Kyohyuk Lee and et al, July, 2005. Motion prediction in temporally enhanced picture and improvement of H.264 TDM. Joint Video Team (JVT), Doc. JVTP075, Poznan, Poland.
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Paper Citation


in Harvard Style

Lee K., Han W. and Lee T. (2007). IMPROVEMENT OF H.264 SKIP MODE . In Proceedings of the Second International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2007) ISBN 978-989-8111-13-5, pages 143-146. DOI: 10.5220/0002141901430146


in Bibtex Style

@conference{sigmap07,
author={Kyohyuk Lee and Woojin Han and Tammy Lee},
title={IMPROVEMENT OF H.264 SKIP MODE},
booktitle={Proceedings of the Second International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2007)},
year={2007},
pages={143-146},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002141901430146},
isbn={978-989-8111-13-5},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Second International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2007)
TI - IMPROVEMENT OF H.264 SKIP MODE
SN - 978-989-8111-13-5
AU - Lee K.
AU - Han W.
AU - Lee T.
PY - 2007
SP - 143
EP - 146
DO - 10.5220/0002141901430146