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David Nguyen


Publications by David Nguyen (bibliography)

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Lyons, Kent, Nguyen, David, Ashbrook, Daniel and White, Sean (2012): Facet: a multi-segment wrist worn system. In: Proceedings of the 2012 ACM Symposium on User Interface Software and Technology 2012. pp. 123-130. http://dx.doi.org/10.1145/2380116.2380134

We present Facet, a multi-display wrist worn system consisting of multiple independent touch-sensitive segments joined into a bracelet. Facet automatically determines the pose of the system as a whole and of each segment individually. It further supports multi-segment touch, yielding a rich set of touch input techniques. Our work builds on these two primitives to allow the user to control how applications use segments alone and in coordination. Applications can expand to use more segments, collapses to encompass fewer, and be swapped with other segments. We also explore how the concepts from Facet could apply to other devices in this design space.

© All rights reserved Lyons et al. and/or ACM Press

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Nguyen, David and Canny, John (2005): MultiView: spatially faithful group video conferencing. In: Proceedings of ACM CHI 2005 Conference on Human Factors in Computing Systems 2005. pp. 799-808. http://doi.acm.org/10.1145/1054972.1055084

MultiView is a new video conferencing system that supports collaboration between remote groups of people. MultiView accomplishes this by being spatially faithful. As a result, MultiView preserves a myriad of nonverbal cues, including gaze and gesture, in a way that should improve communication. Previous systems fail to support many of these cues because a single camera perspective warps spatial characteristics in group-to-group meetings. In this paper, we present a formal definition of spatial faithfulness. We then apply a metaphor-based design methodology to help us specify and evaluate MultiView's support of spatial faithfulness. We then present results from a low-level user study to measure MultiView's effectiveness at conveying gaze and gesture perception. MultiView is the first practical solution to spatially faithful group-to-group conferencing, one of the most common applications of video conferencing.

© All rights reserved Nguyen and Canny and/or ACM Press

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