High Quality Multi-View Video Streaming over Multiple Transmission Paths

Iori OTOMO  Takuya FUJIHASHI  Yusuke HIROTA  Takashi WATANABE  

Publication
IEICE TRANSACTIONS on Communications   Vol.E100-B   No.8   pp.1514-1524
Publication Date: 2017/08/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2016EBP3286
Type of Manuscript: PAPER
Category: Multimedia Systems for Communications
Keyword: 
multi-view transmission,  multi-path,  encoding,  loss resilience,  

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Summary: 
The development of multi-view video has paved the way for emerging 3D applications. In general multi-view video streaming, video frames for all viewpoints, i.e., cameras, must be transmitted to viewers because the view-switching demands of all viewers are unpredictable. However, existing transmission schemes are highly vulnerable to frame loss. Specifically, frame loss in one viewpoint can induce a collapse in decoding for other viewpoints. To improve loss-resilience, this paper proposes a multi-path based multi-view video transmission scheme. Our scheme encodes video frames into multiple versions that are independent of each other, using inter-view prediction. The scheme then transmits each version using multiple transmission paths. Our scheme makes three contributions: 1) it reduces video traffic even for a large number of cameras, 2) it prevents an increase in the number of undecoded video frames caused by single-frame loss, and 3) it conceals frame loss by taking video frames from other paths. Evaluations show that our proposed scheme improves video quality by 3 dB, as compared to existing transmission schemes in loss-prone environments.