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Coding and replication co-design for interactive multiview video streaming

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5 Author(s)
Huan Huang ; Dept. of Comp. Sci. & Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong, China ; Bo Zhang ; Chan, S.-H.G. ; Cheung, G.
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Multiview video refers to the simultaneous capturing of multiple video views with an array of closely spaced cameras. In an interactive multiview video streaming (IMVS) system, a client can play back the content in time in a single view, and may observe a scene of interest by switching to different viewpoints. Users independently choose their own view navigation paths through the high-dimensional multiview data. Distributed servers are deployed to collaboratively replicate video content in order to support user scalability. Such a system typically presents challenges in both coding and content replication. In coding, the multiview video must be encoded in order to support efficient view-switching and distributed replication. In content replication, it is important to decide which data blocks to store at each server to facilitate view-switches at any time. In this paper, we co-design a coding structure and a distributed content replication strategy. First, we propose a coding structure based on redundant P-frames and distributed source coding (DSC) frames to achieve efficiency in coding, view switches and content replication. We then propose a heuristic-based distributed and cooperative replication strategy to take advantage of the correlation between the multiple views for resource-effective content delivery. Simulation results show that our coding and replication co-design is cost-effective in supporting IMVS services.

Published in:

INFOCOM, 2012 Proceedings IEEE

Date of Conference:

25-30 March 2012