Toronto Networking Seminar

Organized by Department of Computer Science and Department of Electrical and Computer Engineering, University of Toronto

View-casting: View-based Multi-Source 3D Stream Dissemination and Control for Multi-Party Tele-immersive Environments

Klara Nahrstedt
Ralph and Catherine Fisher Professor
Department of Computer Science
University of Illinois at Urbana-Champaign

Friday, November 20, 2pm
Location: BA 1210 


Multiple tele-immersive 3D multi-camera, multi-display room environments are emerging and with them new challenging research questions. One important question is how to disseminate the multiple sources per room efficiently across multiple participating rooms using current computing and networking infrastructures. In this talk, I will present a novel cross-layer control, adaptive multicasting framework with view dissemination, called View-Casting. View-Casting aims for (1) effective and adaptive coordination, synchronization and soft QoS-enabled delivery of tele-immersive visual streams to remote rooms, and (2) effective view-casting model for different view dissemination in the multi-party 3D tele-immersive environments. I will discuss different resource optimization and routing strategies to achieve robust view-casting as different rooms join and leave the tele-immersive sessions. The simulation results and partial TEEVE system experiment results confirm the soundness of our design and approach.

Joint work with Dr. Zhenyu Yang (Florida International University), Wanmin Wu (University of Illinois at Urbana-Champaign), Dr. Gregorij Kurillo (UC Berkeley) and Prof. Ruzena Bajcsy (UC Berkeley).


Klara Nahrstedt is a professor at the University of Illinois at Urbana-Champaign, Computer Science Department. Her research interests are directed towards multimedia middleware systems, quality of service(QoS), QoS routing, QoS-aware resource management in distributed multimedia systems, and multimedia security. She is the coauthor of the widely used multimedia books "Multimedia: Computing, Communications and Applications" published by Prentice Hall in 1995, and "Multimedia Systems" published by Springer Verlag in 2004. She is the recipient of the IEEE Communication Society Leonard Abraham Award, the Ralph and Catherine Fisher Professorship Chair, University Scholar Award and Humboldt Research Award. She was the editor-in-chief of ACM/Springer Multimedia Systems Journal (2000-2005), the general co-chair of ACM Multimedia 2006, the general chair of ACM NOSSDAV 2007, the general chair of Percom 2009, and she is currently the elected chair of the ACM Special Interest Group in Multimedia (2007-2011).

Klara Nahrstedt received her BA in mathematics from Humboldt University, Berlin, in 1984, and M.Sc. degree in numerical analysis from the same university in 1985. She was a research scientist in the Institute for Informatik in Berlin until 1990. In 1995 she received her PhD from the University of Pennsylvania in the Department of Computer and Information Science. She is a member of ACM and Fellow of IEEE.

Host of Talk:

Baochun Li (