Influence of network delay on viewpoint change in free-viewpoint video transmission
Influence of network delay on viewpoint change in free-viewpoint video transmission
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DOI：
10.1109/apcc.2012.6388112
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
Junya Osada;Norishige Fukushima;Y. Ishibashi
中科院分区：
文献类型：
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作者：
Junya Osada;Norishige Fukushima;Y. Ishibashi
自由视点视频吸引了许多研究者。通过该视频，用户可以在用户侧自由地改变视频的视点。在IP网络上传输此类媒体，网络延迟会降低媒体的质量。在本文中，我们研究了网络延迟的影响，在自由视点视频传输的QoE（体验质量）评估。我们解决两个自由视点正常和立体视频的传输方法。一种是合成图像传输方法，另一种是深度和图像传输方法。深度和图像是用于合成图像的数据。我们评估的图像质量，视点变化的交互性，和综合质量。评估结果表明，合成图像传输方法的图像质量高于深度和图像传输方法的图像质量，这在交互性方面是有利的。实验结果还表明，自由视点立体视频比普通视频具有更高的图像质量。
Free viewpoint video attracts many researchers. With the video, users can change viewpoint of the video freely at the user side. Transmitting such media over IP network, the network delay deteriorates qualities of the media. In this paper, we investigate the influence of network delay in free-viewpoint video transmission by QoE (Quality of Experience) assessment. We address two transmission methods for free-viewpoint normal and stereoscopic videos. One is the synthesized image transmission method, and the other is the depth and image transmission method. Depth and image are data for synthesizing an image. We assess the image quality, the interactivity of viewpoint change, and the comprehensive quality. Assessment results demonstrate that the image quality of the synthesized image transmission method is higher than that of the depth and image transmission method, which is advantageous in terms of interactivity. The results also illustrate that the free-viewpoint stereoscopic video has higher image quality than the normal one.