[CPCC] SEMINAR: Monitoring Video Quality Inside a Network Friday 3/12 11 AM

[Ender Ayanoglu]

                                SEMINAR

                Monitoring Video Quality Inside a Network

                                   by

                             Dr. Amy Reibman
                           AT&T Labs - Research

                           March 12, 2010, Friday
                                  11 AM
                                DBH 6011

                                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.

                       SPEAKER'S BIOGRAPHY

Amy R. Reibman was a Distinguished Lecturer in the IEEE Signal
Processing Society from 2008-2009.  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 estimation,
superresolution image and video enhancement, and 3-D and multiview
video.