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Label Segregation by Remapping Stereoscopic Depth in Far-Field Augmented Reality
Linköping University, Department of Science and Technology, Visual Information Technology and Applications (VITA). Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology, Visual Information Technology and Applications (VITA). Linköping University, The Institute of Technology.
Human Systems Integration Division, NASA Ames Research Center.
2008 (English)In: 7th IEEE/ACM International Symposium on Mixed and Augmented Reality, 2008. ISMAR 2008. / [ed] Mark A. Livingston, Oliver Bimber, Hideo Saito, Piscataway, NJ, USA: IEEE , 2008, 143-152 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper describes a novel technique for segregating overlapping labels in stereoscopic see-through displays. The present study investigates the labeling of far-field objects, with distances ranging 100-120 m. At these distances the stereoscopic disparity difference between objects is below 1 arcmin, so labels rendered at the same distance as their corresponding objects appear as if on a flat layer in the display. This flattening is due to limitations of both display and human visual resolution. By remapping labels to predetermined depth layers on the optical path between the observer and the labeled object, an interlayer disparity ranging from 5 to 20 arcmin can be achieved for 5 overlapping labels. The present study evaluates the impact of such depth separation of superimposed layers, and found that a 5 arcmin interlayer disparity yields a significantly lower response time, over 20% on average, in a visual search task compared to correctly registering labels and objects in depth. Notably the performance does not improve when doubling the interlayer disparity to 10 arcmin and, surprisingly, the performance degrades significantly when again doubling the interlayer disparity to 20 arcmin, approximating the performance in situations with no interlayer disparity. These results confirm that our technique can be used to segregate overlapping labels in the far visual field, without the cost associated with traditional label placement algorithms.

Place, publisher, year, edition, pages
Piscataway, NJ, USA: IEEE , 2008. 143-152 p.
Keyword [en]
label placement, user interfaces, stereoscopic displays, augmented reality, visual clutter, information layering
National Category
Computer Science
Identifiers
URN: urn:nbn:se:liu:diva-43009DOI: 10.1109/ISMAR.2008.4637341ISI: 000260993200026Local ID: 70649ISBN: 978-1-4244-2840-3 (print)ISBN: 978-1-4244-2859-5 (print)OAI: oai:DiVA.org:liu-43009DiVA: diva2:263866
Conference
7th IEEE/ACM International Symposium on Mixed and Augmented Reality, Cambridge, UK, 15-18 Sept. 2008
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2014-04-22Bibliographically approved
In thesis
1. Stereoscopic Label Placement: Reducing Distraction and Ambiguity in Visually Cluttered Displays
Open this publication in new window or tab >>Stereoscopic Label Placement: Reducing Distraction and Ambiguity in Visually Cluttered Displays
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

With increasing information density and complexity, computer displays may become visually cluttered, adversely affecting overall usability. Text labels can significantly add to visual clutter in graphical user interfaces, but are generally kept legible through specific label placement algorithms that seek visual separation of labels and other objects in the 2D view plane. This work studies an alternative approach: can overlapping labels be visually segregated by distributing them in stereoscopic depth? The fact that we have two forward-looking eyes yields stereoscopic disparity: each eye has a slightly different perspective on objects in the visual field. Disparity is used for depth perception by the human visual system, and is therefore also provided by stereoscopic 3D displays to produce a sense of depth.

This work has shown that a stereoscopic label placement algorithm yields user performance comparable with existing algorithms that separate labels in the view plane. At the same time, such stereoscopic label placement is subjectively rated significantly less disturbing than traditional methods. Furthermore, it does not allow for potentially ambiguous spatial relationships between labels and background objects inherent to labels separated in the view plane. These findings are important for display systems where disturbance, distraction and ambiguity of the overlay can negatively impact safety and efficiency of the system, including the reference application of this work: an augmented vision system for Air Traffic Control towers.

Place, publisher, year, edition, pages
Linköping: Linköping University Electroic Press, 2009. 75 p.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1293
Keyword
Label placement, user interfaces, stereoscopic displays, augmented reality, virtual reality, visual clutter
National Category
Computer Science
Identifiers
urn:nbn:se:liu:diva-51742 (URN)978-91-7393-469-5 (ISBN)
Public defence
2009-12-18, K3, Kåkenhus, Campus Norrköping, Linköpings universitet, Norrköping, 14:15 (English)
Opponent
Supervisors
Available from: 2009-12-07 Created: 2009-11-16 Last updated: 2015-09-22Bibliographically approved

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Peterson, Stephen D.Axholt, Magnus

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