Hybrid speaker tracking in an automated lecture room

13 years 10 months ago

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We present a hybrid speaker tracking scheme based on a single pan/tilt/zoom (PTZ) camera in an automated lecture capturing system. Given that the camera’s video resolution is higher than the required output resolution, we frame the output video as a subregion of the camera’s input video. This allows us to track the speaker both digitally and mechanically. Digital tracking has the advantage of being smooth, and mechanical tracking can cover a wide area. The hybrid tracking achieves the beneﬁts of both worlds. In addition to hybrid tracking, we present an intelligent pan/zoom selection scheme to improve the aestheticity of the lecture scene.

Cha Zhang, Yong Rui, Li-wei He, Michael N. Wallick

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