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Kenneth Herndon


Publications by Kenneth Herndon (bibliography)

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Forsberg, Andrew, Herndon, Kenneth and Zeleznik, Robert (1996): Aperture Based Selection for Immersive Virtual Environments. In: Kurlander, David, Brown, Marc and Rao, Ramana (eds.) Proceedings of the 9th annual ACM symposium on User interface software and technology November 06 - 08, 1996, Seattle, Washington, United States. pp. 95-96. http://www.acm.org/pubs/articles/proceedings/uist/237091/p95-forsberg/p95-forsberg.pdf

We present two novel techniques for effectively selecting objects in immersive virtual environments using a single 6 DOF magnetic tracker. These techniques advance the state of the art in that they exploit the participant's visual frame of reference and fully utilize the position and orientation data from the tracker to improve accuracy of the selection task. Preliminary results from pilot usability studies validate our designs. Finally, the two techniques combine to compensate for each other's weaknesses.

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

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Herndon, Kenneth and Meyer, Tom (1994): 3D Widgets for Exploratory Scientific Visualization. In: Szekely, Pedro (ed.) Proceedings of the 7th annual ACM symposium on User interface software and technology November 02 - 04, 1994, Marina del Rey, California, United States. pp. 69-70. http://www.acm.org/pubs/articles/proceedings/uist/192426/p69-herndon/p69-herndon.pdf

Scientists use a variety of visualization techniques to help understand computational fluid dynamics (CFD) datasets, but the interfaces to these techniques are generally two-dimensional and therefore separated from the 3D view. Both rapid interactive exploration of datasets and precise control over the parameters and placement of visualization techniques are required to understand complex phenomena contained in these datasets. In this paper, we present work in progress on a 3D user interface for exploratory visualization of these datasets.

© All rights reserved Herndon and and/or ACM Press

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Herndon, Kenneth, Zeleznik, Robert, Robbins, Daniel, Conner, D. Brookshire, Snibbe, Scott S. and van Dam, Andries (1992): Interactive Shadows. In: Mackinlay, Jock D. and Green, Mark (eds.) Proceedings of the 5th annual ACM symposium on User interface software and technology November 15 - 18, 1992, Monteray, California, United States. pp. 1-6. http://www.acm.org/pubs/articles/proceedings/uist/142621/p1-herndon/p1-herndon.pdf

It is often difficult in computer graphics applications to understand spatial relationships between objects in a 3D scene or effect changes to those objects without specialized visualization and manipulation techniques. We present a set of three-dimensional tools (widgets) called "shadows" that not only provide valuable perceptual cues about the spatial relationships between objects, but also provide a direct manipulation interface to constrained transformation techniques. These shadow widgets provide two advances over previous techniques. First, they provide high correlation between their own geometric feedback and their effects on the objects they control. Second, unlike some other 3D widgets, they do not obscure the objects they control.

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

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