The defense of PhD thesis of Xavier Corbillon will be held on October 30th at 10:15 at IMT Atlantique, Rennes Campus , Petit Amphi. The thesis title is “Enable the next generation of interactive video streaming”.

Abstract

Omnidirectional videos, also denoted as spherical videos or 360° videos, are videos with pixels recorded from a given viewpoint in every direction of space. A user watching such an omnidirectional content with a Head Mounted Display (HMD) can select the portion of the video to display, usually denoted as viewport, by moving her head. To feel high immersion inside the content a user needs to see viewport with 4K resolution and 90 Hz frame rate. With traditional streaming technologies, providing such quality would require a data rate of more than 100 Mbps , which is far too high compared to the median Internet access bandwidth. In this dissertation, I present my contributions to enable the streaming of highly immersive omnidirectional videos on the Internet. We can distinguish six contributions : a viewport-adaptive streaming architecture proposal reusing a part of existing technologies ; an extension of this architecture for videos with six degrees of freedom ; two theoretical studies of videos with non-homogeneous spatial quality ; an open-source software for handling 360° videos ; and a dataset of recorded users’ trajectories while watching 360° videos. The work done during this thesis was published in eight international conferences and in one journal, and resulted in three “Best Paper Award”s.

 Keywords

Omnidirectional Video, 360°Video, Viewport-Adaptive Streaming, DASH, HEVC

The defense of PhD thesis of Alassane Samba will be held on October 29th at 14:00 at IMT Atlantique, Rennes Campus , Petit Amphi. The thesis title is “Data science for services in operated networks”.

The defense of PhD thesis of Farah SLIM will be held on March 13th at 10:00 at IMT Atlantique, Rennes Campus , Petit Amphi. The thesis title is “Design and Implementation of Resource Allocation Algorithms for a Network Operating System”.

The defense of PhD thesis of Jialong Duan will be held on November 27th at 10:15 at IMT Atlantique, Rennes Campus , Petit Amphi. The thesis title is “Coordination inside Centralized Radio Access Networks with Limited Fronthaul Capacity”.

The defense of PhD thesis of Qipeng Song will be held on November 7th at 14:00 at IMT Atlantique, Rennes Campus , Petit Amphi.

The thesis title is “Radio Access Mechanisms for Massive Communication in Long-­Range Wireless networks”.