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LightSense: Enabling Spatially Aware Handheld Interaction Devices
KTH, School of Computer Science and Communication (CSC), Numerical Analysis and Computer Science, NADA.ORCID iD: 0000-0003-2578-3403
2007 (English)In: Proceedings - ISMAR 2006: Fifth IEEE and ACM International Symposium on Mixed and Augmented Reality, 2007, 119-122 p.Conference paper (Refereed)
Abstract [en]

The vision of spatially aware handheld interaction devices has been hard to realize. The difficulties in solving the general tracking problem for small devices have been addressed by several research groups and examples of issues are performance, hardware availability and platform independency. We present Light-Sense, an approach that employs commercially available components to achieve robust tracking of cell phone LEDs, without any modifications to the device. Cell phones can thus be promoted to interaction and display devices in ubiquitous installations of systems such as the ones we present here. This could enable a new generation of spatially aware handheld interaction devices that would unobtrusively empower and assist us in our everyday tasks.

Place, publisher, year, edition, pages
2007. 119-122 p.
Keyword [en]
Augmented reality, Cell phone, Handheld, LED, Mixed reality, Mobile, Portable, Spatially aware, Ubiquitous
National Category
Computer Science Telecommunications
URN: urn:nbn:se:kth:diva-10462DOI: 10.1109/ISMAR.2006.297802ISI: 000245714200029ScopusID: 2-s2.0-45149104843ISBN: 978-142440650-0ISBN: 1424406501OAI: diva2:217816
ISMAR 2006: 5th IEEE and ACM International Symposium on Mixed and Augmented Reality; Santa Barbara, CA; United States; 22 October 2006 through 25 October 2006

QC 20100804

Available from: 2009-05-15 Created: 2009-05-15 Last updated: 2014-11-17Bibliographically 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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