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Journal of Electronic Imaging

Spatio-temporal correlation-based fast coding unit depth decision for high efficiency video coding
Author(s): Chengtao Zhou; Fan Zhou; Yaowu Chen
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Paper 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.

Paper Details

Date Published: 2 October 2013
PDF: 14 pages
J. Electron. Imag. 22(4) 043001 doi: 10.1117/1.JEI.22.4.043001
Published in: Journal of Electronic Imaging Volume 22, Issue 4
Show Author Affiliations
Chengtao Zhou, Zhejiang Univ. (China)
Fan Zhou, Zhejiang Univ. (China)
Yaowu Chen, Zhejiang Univ. (China)

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