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Visual Clutter Management in Augmented Reality: Effects of Three Label Separation Methods on Spatial Judgments
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.
Linköping University, Department of Science and Technology, Visual Information Technology and Applications (VITA). Linköping University, The Institute of Technology.
NASA Ames Research Center, USA.
2009 (English)In: IEEE Symposium on 3D User Interfaces (3DUI), Lafayette (LA), USA: IEEE , 2009, 111-118 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper reports an experiment comparing three label separation methods for reducing visual clutter in Augmented Reality (AR) displays. We contrasted two common methods of avoiding visual overlap by moving labels in the 2D view plane with a third that distributes overlapping labels in stereoscopic depth. The experiment measured user identification performance during spatial judgment tasks in static scenes. The threemethods were compared with a control condition in which no label separation method was employed. The results showed significant performance improvements, generally 15-30%, for all three methods over the control; however, these methods were statistically indistinguishable from each other. In-depth analysis showed significant performance degradation when the 2D view plane methods produced potentially confusing spatial correlations between labels and the markers they designate. Stereoscopically separated labels were subjectively judged harder to read than view-plane separated labels. Since measured performance was affected both by label legibility and spatial correlation of labels and their designated objects, it is likely that the improved spatial correlation of stereoscopically separated labels and their designated objects has compensated for poorer stereoscopic text legibility. Future testing with dynamic scenes is expected to more clearly distinguish the three label separation techniques.

Place, publisher, year, edition, pages
Lafayette (LA), USA: IEEE , 2009. 111-118 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-51073DOI: 10.1109/3DUI.2009.4811215OAI: oai:DiVA.org:liu-51073DiVA: diva2:272659
Available from: 2009-10-15 Created: 2009-10-15 Last updated: 2009-12-07Bibliographically 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, MagnusCooper, Matthew

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