Spatio-temporal correlation-based fast coding unit depth decision for high efficiency video coding

Chengtao Zhou; Fan Zhou; Yaowu Chen

doi:10.1117/1.JEI.22.4.043001

2 October 2013 Spatio-temporal correlation-based fast coding unit depth decision for high efficiency video coding

Chengtao Zhou, Fan Zhou, Yaowu Chen

Author Affiliations +

Journal of Electronic Imaging, Vol. 22, Issue 4, 043001 (October 2013). https://doi.org/10.1117/1.JEI.22.4.043001

Abstract

The exhaustive block partition search process in high efficiency video coding (HEVC) imposes a very high computational complexity on test module of HEVC encoder (HM). A fast coding unit (CU) depth algorithm using the spatio-temporal correlation of the depth information to fasten the search process is proposed. The depth of the coding tree unit (CTU) is predicted first by using the depth information of the spatio-temporal neighbor CTUs. Then, the depth information of the adjacent CU is incorporated to skip some specific depths when encoding the sub-CTU. As compared with the original HM encoder, experimental results show that the proposed algorithm can save more than 20% encoding time on average for intra-only, low-delay, low-delay P slices, and random access cases with almost the same rate-distortion performance.

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Chengtao Zhou, Fan Zhou, and Yaowu Chen "Spatio-temporal correlation-based fast coding unit depth decision for high efficiency video coding," Journal of Electronic Imaging 22(4), 043001 (2 October 2013). https://doi.org/10.1117/1.JEI.22.4.043001

Published: 2 October 2013

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