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Off Screen

Visualizing Off-Screen Locations

offscreen.jpg: 331x382, 60k (January 06, 2008, at 08:02 PM) When a map is displayed on a PDA or smartphone, it is rarely possible to be zoomed in close enough to view detailed information and view all locations of interest (for example, nearby restaurants) around a certain area. We are investigating a class of visualization techniques that indicate the presence and location of targets that are close to the displayed area, while providing a mechanism to interact directly with the off-screen targets.

I designed two new techniques to visualize off-screen points of interest, EdgeRadar and Wedge. These techniques address the problem of clutter that limits the effectiveness of traditional techniques and with Wedge improves upon the user's ability to pinpoint the exact position of unseen objects.

Publications

Sean Gustafson. 2008. Visualizing Off-Screen Locations on Small Mobile Displays. Master's thesis, Department of Computer Science, University of Manitoba.

Sean Gustafson, Patrick Baudisch, Carl Gutwin and Pourang Irani. 2008. Wedge: clutter-free visualization of off-screen locations. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '08), 787-796.

Sean Gustafson and Pourang Irani. 2007. Comparing visualizations for tracking off-screen moving targets. In Extended Abstracts of the SIGCHI Conference on Human Factors in Computing Systems (CHI '07), 2399-2404.

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