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Spatially Aware Handhelds for High-Precision Tangible Interaction with Large Displays
KTH, School of Computer Science and Communication (CSC), Numerical Analysis and Computer Science, NADA.ORCID iD: 0000-0003-2578-3403
(Department of Computer Science)
2009 (English)In: TEI 2009: International Conference on Tangible and Embedded Interaction, 2009, 181-188 p.Conference paper (Refereed)
Abstract [en]

While touch-screen displays are becoming increasingly popular, many factors affect user experience and performance. Surface quality, parallax, input resolution, and robustness, for instance, can vary with sensing technology, hardware configurations, and environmental conditions.

We have developed a framework for exploring how we could overcome some of these dependencies, by leveraging the higher visual and input resolution of small, coarsely tracked mobile devices for direct, precise, and rapid interaction on large digital displays.

The results from a formal user study show no significant differences in performance when comparing four techniques we developed for a tracked mobile device, where two existing touch-screen techniques served as baselines. The mobile techniques, however, had more consistent performance and smaller variations among participants, and an overall higher user preference in our setup. Our results show the potential of spatially aware handhelds as an interesting complement or substitute for direct touch-interaction on large displays.

Place, publisher, year, edition, pages
2009. 181-188 p.
Keyword [en]
Interaction technique; LightSense; Mobile; MobileButtons; MobileDrag; MobileGesture; MobileRub; Spatially aware; Tangible; Touch; Touch-screen
National Category
Computer Science
URN: urn:nbn:se:kth:diva-10437DOI: 10.1145/1517664.1517705ScopusID: 2-s2.0-70349092988OAI: diva2:217811
QC 20100805Available from: 2009-05-15 Created: 2009-05-14 Last updated: 2010-08-05Bibliographically approved
In thesis
1. Unobtrusive Augmentation  of Physical Environments: Interaction Techniques, Spatial Displays and Ubiquitous Sensing
Open this publication in new window or tab >>Unobtrusive Augmentation  of Physical Environments: Interaction Techniques, Spatial Displays and Ubiquitous Sensing
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The fundamental idea of Augmented Reality (AR) is to improve and enhance our perception of the surroundings, through the use of sensing, computing and display systems that make it possible to augment the physical environment with virtual computer graphics. AR is, however, often associated with user-worn equipment, whose current complexity and lack of comfort limit its applicability in many scenarios.

The goal of this work has been to develop systems and techniques for uncomplicated AR experiences that support sporadic and spontaneous interaction with minimal preparation on the user’s part.

This dissertation defines a new concept, Unobtrusive AR, which emphasizes an optically direct view of a visually unaltered physical environment, the avoidance of user-worn technology, and the preference for unencumbering techniques.

The first part of the work focuses on the design and development of two new AR display systems. They illustrate how AR experiences can be achieved through transparent see-through displays that are positioned in front of the physical environment to be augmented. The second part presents two novel sensing techniques for AR, which employ an instrumented surface for unobtrusive tracking of active and passive objects. These techniques have no visible sensing technology or markers, and are suitable for deployment in scenarios where it is important to maintain the visual qualities of the real environment. The third part of the work discusses a set of new interaction techniques for spatially aware handheld displays, public 3D displays, touch screens, and immaterial displays (which are not constrained by solid surfaces or enclosures). Many of the techniques are also applicable to human-computer interaction in general, as indicated by the accompanying qualitative and quantitative insights from user evaluations.

The thesis contributes a set of novel display systems, sensing technologies, and interaction techniques to the field of human-computer interaction, and brings new perspectives to the enhancement of real environments through computer graphics.

Place, publisher, year, edition, pages
Stockholm: KTH, 2009. xii, 72 p.
TRITA-CSC-A, ISSN 1653-5723 ; 2009:09
National Category
Computer Science
urn:nbn:se:kth:diva-10439 (URN)978-91-7415-339-2 (ISBN)
Public defence
2009-06-05, E1, Lindstedtsvägen 3, KTH, 13:00 (English)

QC 20100805

Available from: 2009-05-26 Created: 2009-05-14 Last updated: 2015-01-30Bibliographically approved

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