Home > Klara Nahrstedt - Navigation Models of Users’ Viewing Patterns for 360-Degree Video Efficient Streaming Systems

Klara Nahrstedt - Navigation Models of Users’ Viewing Patterns for 360-Degree Video Efficient Streaming Systems


11/21/2019 at 3:30PM


11/21/2019 at 4:45PM


131 DeBartolo


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Dong Wang

Dong Wang

VIEW FULL PROFILE Email: dwang5@nd.edu
Phone: 574-631-3749
Website: http://www.nd.edu/~dwang5
Office: 214B Cushing


College of Engineering Assistant Professor
Big Data Analytics, Cyber-Physical Systems (CPS), Social Sensing, Smart Cities, Internet of Things (IoT), Network Science
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With the emergence of new 360-degree cameras and VR/AR display devices, more diverse multimedia content has become available and with it the demand for the capability of streaming 360-degree videos to enhance users’ multimedia experience.  In this talk, we will discuss the challenges of 360-degree video streaming due to its large bandwidth and low latency demands and solutions to satisfy the demands, such as rate adaptation of tiled videos and view prediction techniques. Especially, we will present the concept of navigation graphs for 360-degree videos to represent viewing navigation paths and enable efficient streaming and viewing experience. We will show how navigation graphs are serving as models for viewing behaviors in the temporal and spatial domains to perform the rate adaptation of tiled media associated with view prediction. The experimental results are encouraging and support the claim that the Navigation Graph modeling provides a strong representation of navigation patterns of users, and its usage enhances the viewing experience of 360-degree videos, and volumetric media in augmented reality applications.

Seminar Speaker:

Klara Nahrstedt

Klara Nahrstedt

University of Illinois at Urbana-Champaign

 Klara Nahrstedt is the Ralph and Catherine Fisher Professor in the Computer Science Department, and Director of Coordinated Science Laboratory in the College of Engineering at the University of Illinois at Urbana-Champaign. Her research interests are directed toward tele-immersive systems, end-to-end Quality of Service (QoS) and resource management in large scale distributed systems and networks, and real-time security and privacy in cyber-physical systems such as power grid. She is the co-author of multimedia books `Multimedia: Computing, Communications and Applications' published by Prentice Hall, and ‘Multimedia Systems’ published by Springer Verlag. She is the recipient of the IEEE Communication Society Leonard Abraham Award for Research Achievements, University Scholar, Humboldt Research Award, IEEE Computer Society Technical Achievement Award, ACM SIGMM Technical Achievement Award, TU Darmstadt Piloty Prize, the Grainger College of Engineering Drucker Award, and the former chair of the ACM Special Interest Group in Multimedia. She was the general co-chair and TPC co-chair of many international conferences including ACM Multimedia, IEEE Percom, IEEE IOTDI and others. Klara Nahrstedt received her Diploma in Mathematics from Humboldt University, Berlin, Germany in 1985. In 1995 she received her PhD from the University of Pennsylvania in the Department of Computer and Information Science. She is ACM Fellow, IEEE Fellow, and Member of the German National Academy of Sciences (Leopoldina Society).