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LUMAR: A Hybrid Spatial Display System for 2D and 3D Handheld Augmented Reality
KTH, School of Computer Science and Communication (CSC), Numerical Analysis and Computer Science, NADA.ORCID iD: 0000-0003-2578-3403
2007 (English)In: ICAT: International Conference on Artificial Reality and Teleexistence, 2007, 63-70 p.Conference paper (Refereed)
Abstract [en]

LUMAR is a hybrid system for spatial displays, allowing cell phones to be tracked in 2D and 3D through combined egocentric and exocentric techniques based on the Light-Sense and UMAR frameworks. LUMAR differs from most other spatial display systems based on mobile phones with its three-layered information space. The hybrid spatial display system consists of printed matter that is augmented with context-sensitive, dynamic 2D media when the device is on the surface, and with overlaid 3D visualizations when it is held in mid-air.

Place, publisher, year, edition, pages
2007. 63-70 p.
Keyword [en]
spatially aware; portable; mobile; handheld; cell; phone; augmented reality; mixed reality; ubiquitous
National Category
Telecommunications Computer Science
URN: urn:nbn:se:kth:diva-10463DOI: 10.1109/ICAT.2007.38ISI: 000253933000008ScopusID: 2-s2.0-48349094389ISBN: 978-076953056-7OAI: diva2:217820
QC 20100804Available from: 2009-05-15 Created: 2009-05-15 Last updated: 2010-12-06Bibliographically 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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