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Proceedings of the 1997 symposium on Interactive 3D graphics
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Interacting at a distance: measuring the performance of laser pointers and other devices
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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CHI '02 Extended Abstracts on Human Factors in Computing Systems
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CHI '01 Extended Abstracts on Human Factors in Computing Systems
An Evaluation of Two Input Devices for Remote Pointing
EHCI '01 Proceedings of the 8th IFIP International Conference on Engineering for Human-Computer Interaction
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3DUI '08 Proceedings of the 2008 IEEE Symposium on 3D User Interfaces
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3DUI '08 Proceedings of the 2008 IEEE Symposium on 3D User Interfaces
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Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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Ray-pointing techniques are often advocated as a way for people to interact with very large displays from several meters away. We are interested in two factors that can affect ray pointing: the particular technique's control type, and parallax. Consequently, we tested four ray pointing variants on a wall display that covers a large part of the user's field of view. Tasks included horizontal and vertical targeting, and tracing. Our results show that (a) techniques based on 'rotational control' perform better for targeting tasks, and (b) techniques with low parallax are best for tracing tasks. We also show that a Fitts's law analysis based on angles (as opposed to linear distances) better approximates people's ray pointing performance.