A packetization strategy for interactive multiview video streaming over lossy networks

A packetization strategy for interactive multiview video streaming over lossy networks
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有损网络上交互式多视图视频流的分包策略

DOI:
10.1016/j.sigpro.2017.12.016
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发表时间:
2018-04
期刊:
影响因子:
4.4
通讯作者:
Lin Chunyu
Lin Chunyu
中科院分区:
工程技术2区
文献类型:
--
作者:
Zhang Xue;Zhao Yao;Tillo Tammam;Lin Chunyu

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交互式多视图视频流(IMVS)应用允许在3D场景内自由导航。这赋予最终用户沉浸式和虚拟现实体验。任何感兴趣的附加视点可以通过接收到的纹理视图与相关联的深度图虚拟地合成。在本文中,我们考虑的设置,其中编码的纹理和深度比特流在网络流传输过程中的数据包丢失。我们研究了两种分组化策略,并开发了一种新的策略,以提高多视图视频加深度传输的容错能力,其中纹理数据和相应的深度进入同一个数据包。我们研究不同的打包方案所产生的失真,并分析它们之间的真实的差异在不同的情况下。特别是,我们考虑到:(i)各种数据包丢失模式,其中突发丢失的影响被确定为一个重要的特征;(ii)两个数据包丢失模型,其特征在于每个场景的不同概率。实验结果表明,与竞争的方法相比,我们提出的打包方案增加了视觉质量高达2.32 dB和1.55 dB的纹理视图和合成视图,分别。
Interactive multiview video streaming (IMVS) applications permit to freely navigate within 3D scenes. This endows end-users the immersive and virtual reality experiences. Any additional viewpoint of interest can be virtually synthesized by received texture views with associated depth maps. In this paper, we consider the setup where both the encoded texture and depth bitstreams experience packet losses during network streaming. We investigate two packetization strategies and develop a novel strategy to improve error-resilience capabilities for multiview video plus depth transmission, where texture data and the corresponding depth go into the same packet. We examine the resulting distortion of different packetization schemes and analyze the real difference between them in diverse scenarios. In particular, we take into account: (i) various packet loss patterns, where the effect of a burst loss is identified as an important characteristic; (ii) two packet loss models that characterize different probabilities for each scenario. Experimental results demonstrate that, compared with the competing approach, our proposed packetization scheme increases the visual quality by up to 2.32 dB and 1.55 dB for texture views and synthesized views, respectively.
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