Publikation
Impact of Item Density on Magic Lens Interactions
Michael Rohs; Johannes Schöning; Robert Schleicher; Georg Essl; Anja Naumann; Antonio Krüger
In: Mobile HCI 2009: Proceedings of the 11th International Conference on Human-Computer Interaction with Mobile Devices and Service,. International Conference on Human-Computer Interaction with Mobile Devices and Services (MobileHCI-09), September 15-18, Bonn, Germany, ACM, 2009.
Zusammenfassung
We conducted a user study to investigate 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 objects on a map and look for a specific attribute shown
on the display. We tested different sizes of visual context as well
as different numbers of items per area, i.e. different item densities.
We found that visual context is most effective for sparse item
distributions and the performance benefit decreases with
increasing density. User performance in the magic lens case
approaches the performance of the dynamic peephole case the
more densely spaced the items are. 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 by suggesting when external visual context is most
beneficial.