The motion estimation and disparity estimation are used to remove the temporal and inter-view redundancies in multiview plus depth video coding, however, the variable block-size ME and DE make the computational complexity increase dramatically. This drawback limits it to be applied in real-time applications. In this paper, based on the mode correlations between depth video and its corresponding texture video, motion prediction and coded block pattern, we propose a fast mode decision algorithm to reduce the computational complexity of multiview depth video coding. Experimental results show that the proposed algorithm can achieve 67.18 and 69.90 % encoding time saving for even and odd views, respectively, while maintaining a comparable rate-distortion performance. In addition, with the dramatic encoding time reduction, the proposed algorithm becomes more suitable for real-time applications.
Bibliographical noteThis work was supported in part by the Natural Science Foundation of China under Grants 61272289, 61102088 and in part by the Guangdong Provincial Nature Science Foundation under Grant S2012010008457, Shenzhen Emerging Industries of Strategic Basic Research Project under Grant JCYJ20120617151719115.
- Fast mode decision
- Multiview depth video coding
- Three-dimensional video
- Video coding