On building automatic camera-management system for online lecture broadcasting

Qiong Liu

doi:10.1117/12.434280

20 July 2001 On building automatic camera-management system for online lecture broadcasting

Qiong Liu

Proceedings Volume 4519, Internet Multimedia Management Systems II; (2001) https://doi.org/10.1117/12.434280
Event: ITCom 2001: International Symposium on the Convergence of IT and Communications, 2001, Denver, CO, United States

Abstract

This paper reports our design, and implementation of an automatic lecture-room camera-management system. The motivation for building this system is to facilitate online lecture access and reduce the expense of producing high quality lecture videos. The goal of this project is a camera-management system that can perform as a human video-production team. To achieve this goal, our system collects audio/video signals available in the lecture room and uses the multimodal information to direct our video cameras to interesting events. Compared to previous work--which has tended to be technology centric--we started with interviews with professional video producers and used their knowledge and expertise to create video production rules. We then targeted technology components that allowed us to implement a substantial portion of these rules, including the design of a virtual video director, a speaker cinematographer, and an audience cinematographer. The complete system is installed in parallel with a human-operated video production system in a middle-sized corporate lecture room, and used for broadcasting lectures through the web. The system¡*s performance was compared to that of a human operator via a user study. Results suggest that our system's quality is close to that of a human-controlled system.

Citation Download Citation

Qiong Liu "On building automatic camera-management system for online lecture broadcasting", Proc. SPIE 4519, Internet Multimedia Management Systems II, (20 July 2001); https://doi.org/10.1117/12.434280

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KEYWORDS

Cameras

Video

Imaging systems

Computing systems

Video processing

Prototyping

Content addressable memory

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