Rate-Distortion Optimized Mode Switching for Error-Resilient Multi-View Video Plus Depth Based 3-D Video Coding
Rate-Distortion Optimized Mode Switching for Error-Resilient Multi-View Video Plus Depth Based 3-D Video Coding
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DOI：
10.1109/tmm.2014.2331013
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发表时间：
2014-07
影响因子：
7.3
通讯作者：
Pan Gao;W. Xiang
中科院分区：
文献类型：
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作者：
Pan Gao;W. Xiang
针对有损网络中基于多视点视频加深度（MVD）的三维视频传输，提出了一种率失真优化的编码模式切换方案，以提高系统的抗误码能力。首先，我们推导出一个新的端到端的失真模型，基于MVD的3-D视频传输。与以前的基于MVD的视频失真模型相比，其中失真仅通过调查合成虚拟视图上的预期纹理视频误差和深度误差来测量，所提出的方案表征了由于分组丢失而导致的渲染虚拟视图和编码纹理视频中的端到端失真。此外，还考虑了纹理视频和深度图的视图间误差传播。基于所提出的失真模型，然后在纹理视频和深度图编码过程中执行最优模式决策算法。实验结果表明，该方法提供了显着的改善，在客观和主观评价。
In this paper, a rate-distortion optimized coding mode switching scheme is proposed to improve error resilience for multi-view video plus depth (MVD) based 3-D video transmission over lossy networks. First, we derive a new end-to-end distortion model for MVD-based 3-D video transmission. As compared with the previous MVD-based video distortion models in which distortion is measured by only investigating the expected texture video errors and depth errors on the synthesized virtual view, the proposed scheme characterizes both the end-to-end distortions in the rendered virtual view and the coded texture video due to packet losses. Moreover, inter-view error propagation for the texture video and depth map is also considered. Based on the proposed distortion model, an optimal mode decision algorithm is then performed in the texture video and depth map coding process. Experimental results show that the proposed method provides significant improvements in terms of both objective and subjective evaluations.