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

[+] Author Affiliations
Chengtao Zhou

Zhejiang University, Institute of Advanced Digital Technology and Instrumentation, No.38 Yugu Road, Hang Zhou 310027, China

Fan Zhou

Zhejiang University, Institute of Advanced Digital Technology and Instrumentation, No.38 Yugu Road, Hang Zhou 310027, China

Yaowu Chen

Zhejiang University, Institute of Advanced Digital Technology and Instrumentation, No.38 Yugu Road, Hang Zhou 310027, China

J. Electron. Imaging. 22(4), 043001 (Oct 02, 2013). doi:10.1117/1.JEI.22.4.043001
History: Received March 6, 2013; Revised August 5, 2013; Accepted August 27, 2013
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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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© 2013 SPIE and IS&T

Citation

Chengtao Zhou ; Fan Zhou and Yaowu Chen
"Spatio-temporal correlation-based fast coding unit depth decision for high efficiency video coding", J. Electron. Imaging. 22(4), 043001 (Oct 02, 2013). ; http://dx.doi.org/10.1117/1.JEI.22.4.043001


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