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Navigation-Aware Adaptive Streaming Strategies for Omnidirectional Video

Rossi, S; Toni, L; (2017) Navigation-Aware Adaptive Streaming Strategies for Omnidirectional Video. In: 2017 IEEE 19th International Workshop on Multimedia Signal Processing (MMSP). IEEE Green open access

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Abstract

Virtual reality (VR) applications target high-quality and zero-latency scene navigation to provide users with a full-immersion sensation within a scene. From a network perspective, this requires transmission of the omnidirectional content in its entirety, at a high resolution, which is not always feasible in bandwidth-limited networks. In this work, we propose an optimal transmission strategy for virtual reality applications able to fulfill the bandwidth requirements, while optimizing the end-user quality experienced in the navigation. In further detail, we consider a tile-based coded content for adaptive streaming systems, and we propose a navigation-aware transmission strategy at the clientside (i.e., adaptation logic), which is able to optimize the rate at which each tile is downloaded. First, we introduce the viewport- quality as metric that reflects the quality of any portion of the sphere displayed by the end-user. Then, we cast the tile-rate optimization as an integer linear programming problem and show that the proposed solution achieves substantial quality gains when compared to state-of-the-art adaptation logic methods.

Type: Proceedings paper
Title: Navigation-Aware Adaptive Streaming Strategies for Omnidirectional Video
Event: 19th IEEE International Workshop on Multimedia Signal Processing (MMSP), 16-18 October 2017, Luton, UK
Location: Luton, ENGLAND
Dates: 16 October 2017 - 18 October 2017
ISBN-13: 9781509036493
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/MMSP.2017.8122230
Publisher version: https://doi.org/10.1109/MMSP.2017.8122230
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Distortion, Navigation, Optimization, Encoding, Streaming media, Adaptive systems, Bandwidth
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10059095
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