Impact of item density on the utility of visual context in magic lens interactions

verfasst von: Michael Rohs, Robert Schleicher, Johannes Schöning, Georg Essl, Anja Naumann, Antonio Krüger
Abstract: 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.
Externe Organisation(en): Technische Universität Berlin
Westfälische Wilhelms-Universität Münster (WWU)
Typ: Artikel
Journal: Personal and ubiquitous computing
Band: 13
Seiten: 633-646
Anzahl der Seiten: 14
ISSN: 1617-4909
Publikationsdatum: 04.07.2009
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Hardware und Architektur, Angewandte Informatik, Managementlehre und Operations Resarch
Elektronische Version(en): https://doi.org/10.1007/s00779-009-0247-2 (Zugang: Geschlossen)

BibTeX

@article{08eeb9a4f12746edbe48e4190b3083aa,
title = "Impact of item density on the utility of visual context in magic lens interactions",
abstract = "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.",
keywords = "Camera phone, Dynamic peephole, Eye tracking, Focus and context display, Magic lens, Mobile device, Pupil dilation, Saccades, Small display, Visual search",
author = "Michael Rohs and Robert Schleicher and Johannes Sch{\"o}ning and Georg Essl and Anja Naumann and Antonio Kr{\"u}ger",
note = "Copyright: Copyright 2009 Elsevier B.V., All rights reserved.",
year = "2009",
month = jul,
day = "4",
doi = "10.1007/s00779-009-0247-2",
language = "English",
volume = "13",
pages = "633--646",
journal = "Personal and ubiquitous computing",
issn = "1617-4909",
publisher = "Springer London",
number = "8",
}