Visitor's Talk



TEEVE: Next Generation Architecture for Tele-immersive Environments

• Speaker: Klara Nahrstedt, Department of Computer Science University of Illinois at Urbana-Champaign

• Abstract:
  Tele-immersive 3D multi-camera, multi-display room environments are emerging and with them new challenging research questions. One important question is how to organize the large amount of visual data, being captured, processed, transmitted and displayed, and their corresponding resources over current COTS computing and networking infrastructures so that ¡°everybody¡± would be able to install and use tele-immersive environments for conferencing and other activities. In this talk, I will present a novel cross-layer control and adaptive streaming framework over general purpose delivery infrastructure, called TEEVE (Tele-immersive Environments for EVErybody). TEEVE aims for effective and adaptive coordination, synchronization and soft QoS-enabled delivery of tele-immersive visual streams to remote room(s). Our current initial TEEVE experiments between UIUC and UC Berkeley show that we can sustain communication of up to 12 3D video streams with up to 5 frames per second for each stream, rendering therefore up to 5 4D video frames per second. I will discuss the successes and the various challenges that still remain in this very interesting application. This is a joint work with Zhenyu Yang, Wanmin Wu, Bin Yu, and Ruzena Bajcsy.

• Biographical Sketch:
  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, and ¡®Multimedia Systems¡¯ published by Springer Verlag. She is the recipient of the Early NSF Career Award, the Junior Xerox Award, the IEEE Communication Society Leonard Abraham Award for Research Achievements, and the Ralph and Catherine Fisher Professorship Chair. She was the editor-in-chief of ACM/Springer Multimedia Systems Journal until December 2005, she is the general co-chair of ACM Multimedia 2006, and she will be the general chair of ACM NOSSDAV 2007. 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.