Inhalt des Dokuments
Benjamin Belmudez
[1]- © Copyright??
Research Field
Audiovisual quality
Research Topics
Multimodal Quality Assessment on Videoconferencing
Biography
Benjamin was born in France in
1983. He first studied general Mathematics and Physics in Toulouse.
Then he joined the National School of Higher Education in Physics of
Strasbourg (Engineering school) and specialized in Video and Image
Processing. He carried out his master's degree within the INRIA in
cooperation with the LIAMA (Beijing) on "Structural Change
Detectection on Satellite Images using Conditional Mixed States
Markovian Model". In 2007, he started a Phd within the Deutsche
Telekom Laboratories and the Technical University of Berlin.
Address Quality and Usability Lab
Deutsche Telekom Laboratories
TU Berlin
Ernst-Reuter-Platz
7
D-10587 Berlin, Germany Tel: +49 30 8353 58233
Publications
| Zitatschlüssel | lewcio2011b |
|---|---|
| Autor | Lewcio, Blazej and Belmudez, Benjamin and Mehmood, Amir and Wältermann, Marcel and Möller, Sebastian |
| Buchtitel | IEEE International Workshop on Communications Quality and Reliability (CQR 2011) |
| Seiten | 1–6 |
| Jahr | 2011 |
| ISBN | 978-1-4577-1297-5 |
| DOI | 10.1109/CQR.2011.5996089 |
| Ort | Naples, USA |
| Adresse | Naples, USA |
| Monat | 10.-12. May |
| Verlag | IEEE |
| Wie herausgegeben | full |
| Zusammenfassung | Next Generation Mobile Networks (NGMNs) provide an all-IP wireless platform for multimedia service delivery. The integrated communication system creates new perspectives for wireless video distribution and quality provisioning. Depending on the mobility patterns of the nomadic users, the link layer characteristics may rapidly change. Furthermore, mobility and service adaptation events like network handovers, video bit rate switching, or codec changeovers, may affect the user perception. Provisioning ``always best connected'' video services requires a thorough knowledge of video quality perception in NGMNs. In this paper, we address this problem. A subjective test including 50 NGMN conditions has been carried out. They were arranged in groups to assess the impact on perceived quality of 1) the access technology and network handover, 2) video codecs and codec changeover, 3) video bit rate and bit rate switching, and 4) to provide guidelines for packet loss adaptation. We could identify the perceptual bottlenecks of the future wireless communication and are able to propose perceptual guidelines for mobility management. In this way, this paper contributes to the service quality improvement of future wireless communications. |
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