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Abowd, Gregory D.

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Author: Rehg, James M. × Author: Summet, Jay W. ×

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Virtual Rear Projection: A Comparison Study of Projection Technologies for Large Interactive Displays

2003 , Summet, Jay W. , Abowd, Gregory D. , Corso, Gregory M. , Rehg, James M.

Rear projection of large-scale upright displays is often preferred over front projection because of the elimination of shadows that occlude the projected image. However, rear projection is not always a feasible option for space and cost reasons. Recent research suggests that many of the desirable features of rear projection, in particular shadow elimination, can be reproduced using new front projection techniques. We report on an empirical study to determine how two of these new projection techniques compare with traditional rear projection and front projection, with the hope of motivating the continued advance of improved virtual rear projection techniques.

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Virtual Rear Projection: An Empirical Study of Shadow Elimination for Large Upright Displays

2003 , Summet, Jay W. , Abowd, Gregory D. , Corso, Gregory M. , Rehg, James M.

Rear projection of large-scale upright displays is often preferred over front projection because of the elimination of shadows that occlude the projected image. However, rear projection is not always a feasible option for space and cost reasons. Recent research suggests that many of the desirable features of rear projection, in particular shadow elimination, can be reproduced using new front projection techniques. We report on an empirical study to determine how two of these new projection techniques compare with traditional rear projection and front projection, with the hope of motivating the continued advance of improved virtual rear projection techniques.

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Interactive Walls: Addressing the Challenges of Large-scale Interactive Surfaces

2002 , Summet, Jay W. , Somani, Ramswaroop , Abowd, Gregory D. , Rehg, James M.

We present a prototype large-scale interactive electronic whiteboard wall. Various input, output and vision technologies are used to create a surface that can capture digital ink as well as support pen-based interaction with displayed information on subregions of the wall. A simple automated capture application is demonstrated on our prototype surface and research challenges for developing more complex applications with this interactive technology are discussed.

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