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Meeting and Seminar Archive:

Date:  Sep 14, 2009 ~IEEE SPS Distinguished Lecturer~

Title: Monitoring video quality inside a network

Speaker: Dr. Amy Reibman, AT&T Labs


Abstract: As broadband access connectivity becomes more prevalent, more users are streaming video over the Internet, or watching video that has been transmitted over a network. However, the best-effort service model and shared infrastructure of most networks means that network impairments (such as delays, jitter, congestion, and loss) may affect viewing experiences. Network service providers are increasingly interested in measuring the quality of the video that is provided on their network. This can aid in monitoring compliance of service-level agreements (SLAs) between Internet Service Providers (ISPs), hosting centers, and content providers; alert operators to potential performance problems; and help in root-cause analysis and debugging.

We consider the problem of evaluating the quality of transported, compressed video from the perspective of a network service provider. Traditional video quality metrics require original and decoded pixels to be available.

However, neither are easily available inside the network. Therefore, we have developed no-reference techniques that estimate visual quality, relying only on (potentially lossy) bitstreams available inside the network.

In this talk, we present an overview of the problem with measuring video quality in the network and present two quality metrics: one for broadcast MPEG-2 video and the other for streaming video over the Internet.  



Amy R. Reibmanis a Distinguished Lecturer in the IEEE Signal Processing Society. She received the B.S., M.S. and Ph.D. degrees in electrical engineering from Duke University in 1983, 1984, and 1987, respectively. >From 1988 to 1991, she was an assistant professor in the Department of Electrical Engineering at Princeton University. In 1991 she joined AT&T Bell Laboratories, and became a Distinguished Member of Technical Staff in 1995. She is currently a Lead Member of Technical Staff in the Communication Sciences and Artificial Intelligence Research Department at AT&T Laboratories.

Dr. Reibman was elected IEEE Fellow in 2005, for her contributions to video transport over networks. In 1998, she won the IEEE Communications Society Leonard G. Abraham Prize Paper Award. She was the Technical co-chair of the IEEE International Conference on Image Processing in 2002; the Technical Co-chair for the First IEEE Workshop on Multimedia Signal Processing in 1997; the Technical Chair for the Sixth International Workshop on Packet Video in 1994.

Dr. Reibman's research interests include video compression systems for transport over packet and wireless networks, video quality metrics, superresolution image and video enhancement, and 3-D and multiview video.

Slides for the talk: reibman_santaclara0909.pdf (346 KB)

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