Department of Electrical Engineering & Computer Science
Department of Electrical Engineering & Computer Science

Video delivery, QoE, Subjective MOS

Network service providers are actively deploying triple and quadruple play networks that deliver voice, video and data over shared IP infrastructure. The success of this approach largely depends upon the widespread acceptance of the service by end users. Customers are interested in a high quality of experience (QoE) in return for what they pay to service providers. The service providers, on the other hand, need to understand what a high quality of experience means to end users, while maximizing utility of shared infrastructure and retaining a large number of customers.

Research in NetMoC
Network service providers are hence realizing the need to characterize a video stream in terms of QoE rather than Quality of Service (QoS). QoS has long been used to assure service guarantees with typical parameters like bandwidth, delay, and jitter. However, QoS lacks an important element in characterizing video streams: that of human subjectivity. Human perception of the video is best characterized in terms of QoE, which attempts to directly measure the reaction of a human subject when the video is played out. This form of subjective quality assessment is in contrast to traditionally used objective assessment techniques.

Faculty: Mainak Chatterjee
Students: Mukundan Venkataraman

University of Central Florida