Situated information spaces and spatially aware palmtop computers
Communications of the ACM - Special issue on computer augmented environments: back to the real world
Toolglass and magic lenses: the see-through interface
SIGGRAPH '93 Proceedings of the 20th annual conference on Computer graphics and interactive techniques
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Peephole displays: pen interaction on spatially aware handheld computers
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Just point and click?: using handhelds to interact with paper maps
Proceedings of the 7th international conference on Human computer interaction with mobile devices & services
TangiMap: a tangible interface for visualization of large documents on handheld computers
GI '05 Proceedings of Graphics Interface 2005
Ubiquitous graphics: combining hand-held and wall-size displays to interact with large images
Proceedings of the working conference on Advanced visual interfaces
Navigating on handheld displays: Dynamic versus static peephole navigation
ACM Transactions on Computer-Human Interaction (TOCHI)
Map navigation with mobile devices: virtual versus physical movement with and without visual context
Proceedings of the 9th international conference on Multimodal interfaces
Marauders light: replacing the wand with a mobile camera projector unit
Proceedings of the 8th International Conference on Mobile and Ubiquitous Multimedia
Evaluation of an off-screen visualization for magic lens and dynamic peephole interfaces
Proceedings of the 12th international conference on Human computer interaction with mobile devices and services
Personal and Ubiquitous Computing
Mobile pointing task in the physical world: balancing focus and performance while disambiguating
Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services
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This article reports on two user studies investigating the effect of visual context in handheld augmented reality interfaces. A dynamic peephole interface (without visual context beyond the device display) was compared to a magic lens interface (with video see-through augmentation of external visual context). The task was to explore items on a map and look for a specific attribute. We tested different sizes of visual context as well as different numbers of items per area, i.e. different item densities. Hand motion patterns and eye movements were recorded. We found that visual context is most effective for sparsely distributed items and gets less helpful with increasing item density. User performance in the magic lens case is generally better than in the dynamic peephole case, but approaches the performance of the latter the more densely the items are spaced. In all conditions, subjective feedback indicates that participants generally prefer visual context over the lack thereof. The insights gained from this study are relevant for designers of mobile AR and dynamic peephole interfaces, involving spatially tracked personal displays or combined personal and public displays, by suggesting when to use visual context.