TU Berlin

Quality and Usability LabBenjamin Belmudez

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Benjamin Belmudez


Research Field

Audiovisual quality

Research Topics

Multimodal Quality Assessment on Videoconferencing


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


Contributions to Teaching

  • Exercises “Usability Engineering”, Technical University Berlin, 2008-2009


Audiovisual quality integration for interactive communications
Zitatschlüssel belmudez2013b
Autor Belmudez, Benjamin and Möller, Sebastian
Seiten 1–23
Jahr 2013
ISSN 1687-4722
DOI doi:10.1186/1687-4722-2013-24
Journal EURASIP Journal on Audio, Speech, and Music Processing
Nummer 2013:24
Monat nov
Wie herausgegeben full
Zusammenfassung This paper investigates multi-modal aspects of audiovisual quality assessment for interactive communication services. It shows how perceived auditory and visual qualities integrate to an overall audiovisual quality perception in different experimental contexts. Two audiovisual experiments are presented and provide experimental data for the present analysis. First, two experimental contexts are compared, i.e., passive `viewing and listening' and interactive, with regard to their impact on the audiovisual qualities as subjectively perceived by the user. Second, the effects of cross-modal interactions on the assessment of the audio and video qualities are measured for those experimental contexts. The results are compared to the ones found in the literature revealing both similarities and differences in terms of magnitude and also in which cases they occur. Third, the impact of the conversational scenario on the assessment of the auditory and visual qualities is investigated. Finally, results from the literature related to audiovisual integration are gathered by the type of application. A general integration function is proposed for each category, and the performances of these `application-oriented' models demonstrate a direct gain in prediction.
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