• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

Bayesian-theory-based Fast CU Size and Mode Decision Algorithm for 3D-HEVC Depth Video Inter-coding

Vol. 12, No.4, April 30, 2018
10.3837/tiis.2018.04.018, Download Paper (Free):

Abstract

Multi-view video plus depth (MVD) is a mainstream format of 3D scene representation in free viewpoint video systems. The advanced 3D extension of the high efficiency video coding (3D-HEVC) standard introduces new prediction tools to improve the coding performance of depth video. However, the depth video in 3D-HEVC is time consuming. To reduce the complexity of the depth video inter coding, we propose a fast coding unit (CU) size and mode decision algorithm. First, an off-line trained Bayesian model is built which the feature vector contains the depth levels of the corresponding spatial, temporal, and inter-component (texture-depth) neighboring largest CUs (LCUs). Then, the model is used to predict the depth level of the current LCU, and terminate the CU recursive splitting process. Finally, the CU mode search process is early terminated by making use of the mode correlation of spatial, inter-component (texture-depth), and inter-view neighboring CUs. Compared to the 3D-HEVC reference software HTM-10.0, the proposed algorithm reduces the encoding time of depth video and the total encoding time by 65.03% and 41.04% on average, respectively, with negligible quality degradation of the synthesized virtual view.


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Cite this article

[IEEE Style]
Fen Chen, Sheng Liu, Zongju Peng, Qingqing Hu, Gangyi Jiang and Mei Yu, "Bayesian-theory-based Fast CU Size and Mode Decision Algorithm for 3D-HEVC Depth Video Inter-coding," KSII Transactions on Internet and Information Systems, vol. 12, no. 4, pp. 1730-1747, 2018. DOI: 10.3837/tiis.2018.04.018

[ACM Style]
Chen, F., Liu, S., Peng, Z., Hu, Q., Jiang, G., and Yu, M. 2018. Bayesian-theory-based Fast CU Size and Mode Decision Algorithm for 3D-HEVC Depth Video Inter-coding. KSII Transactions on Internet and Information Systems, 12, 4, (2018), 1730-1747. DOI: 10.3837/tiis.2018.04.018