Michael N. Wallick

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Rapid advances in technology and decreasing costs have made it possible to attach high resolution video cameras to just about any computer and record the interactions in a lecture room. Additionally, lecture rooms may be outfitted with several cameras for this purpose. However, recording the interactions alone does not create effective video. In this paper(More)
When recording a classroom lecture, it is useful to capture the writing on the board for processing by applications. To provide more useful information for applications, we group together strokes based on the meaning of the writing. However, it is currently not possible to automatically obtain general semantic information from a video. Instead we rely on(More)
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 sub-region of the camera's input video. This allows us to track the speaker both digitally and mechanically.(More)
The overhead and computer projectors have become an essential element to the classroom and corporate settings. Users of web−based classes and conferences would like to have access to the projector tools. The bandwidth required to transmit these projections is too large to be useful. This paper proposes a framework for processing images displayed by overhead(More)
Graphically augmented video replaces live elements with computer graphic imagery. Graphical augmentation is useful for video recordings of chalk-and marker-board sessions, as it can enhance legibility, comprehensibility, and improve visual interest. Unfortunately, creating augmented video requires laborious post-processing unless the source video is(More)
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