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Spatio-Temporal Activity based Tiling for Panorama Streaming

: Sanchez, Y.; Skupin, R.; Hellge, C.; Schierl, T.


Association for Computing Machinery -ACM-, Special Interest Group on Mobility of Systems, Users, Data and Computing:
27th Workshop on Network and Operating Systems Support for Digital Audio and Video, 2017. Proceedings : Taipei, Taiwan — June 20 - 23, 2017
New York: ACM, 2017
ISBN: 978-1-4503-5003-7
International Workshop on Networking and Operating System Support for Digital Audio and Video (NOSSDAV) <27, 2017, New York/NY>
Fraunhofer HHI ()

In panorama streaming an arbitrary Region-of-Interest (RoI) of a high-resolution video is transmitted, allowing users to navigate interactively within the videos. Transmitting the whole video becomes unfeasible due to the required high bitrates and sending a single video per user, which is encoded for that specific user (i.e. its RoI), has scalability issues. Tile based panoramic streaming overcomes the mentioned drawbacks by allowing users to receive a set of tiles that match their RoI instead of the whole set of tiles. However, optimal tiling -- so that the transmitted bitrate of the RoI content is minimized - is content dependent. In this paper, we propose a model based on a spatio-temporal activity metric so that optimization of the tiling process can be performed in a low complexity manner.