3D-HEVC深度图帧内快速模式决策算法

Fast mode decision algorithm for depth map intra coding in 3D-HEVC

3D-HEVC是多视点纹理加深度视频(MVD)的最新编码标准。针对3D-HEVC中深度图帧内编码过程计算复杂度高的问题,提出了一种减少帧内候选模式数目的快速模式决策算法。该算法基于最佳预测模式与粗选模式列表首位模式与之间的相关性,选择成为最佳预测模式概率较高的几种HEVC帧内预测模式加入到粗选模式列表中。实验结果表明,与原始HTM13.0相比,该算法使得深度图的编码时间减少26.35%,而引起的合成视点的失真忽略不计。

The3D video extension of High Efficiency Video Coding(3D-HEVC)is the latest video coding standard for MVD.In order to reduce the computational complexity of depth map intra coding,an algorithm is proposed to reduce the number of modes in the full-RD search list.By using the self-correlation between the optimal mode and the first mode in the full-RD search list,few modes are chose and added to the full-RD search list.Experimental results show that the proposed algorithm can save26.35%of depth map encoding time on average with negligible distortion for the synthesized views compared with HTM13.0.