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Detection Thresholds for Label Motion in Visually Cluttered Displays
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.
Human Systems Integration Division, NASA Ames Research Center, USA.
2010 (English)In: IEEE Virtual Reality Conference (VR), 2010, Piscataway, NJ, USA: IEEE , 2010, 203-206 p.Conference paper, Published paper (Refereed)
Abstract [en]

While label placement algorithms are generally successful in managing visual clutter by preventing label overlap, they can also cause significant label movement in dynamic displays. This study investigates motion detection thresholds for various types of label movement in realistic and complex virtual environments, which can be helpful for designing less salient and disturbing algorithms. Our results show that label movement in stereoscopic depth is shown to be less noticeable than similar lateral monoscopic movement, inherent to 2D label placement algorithms. Furthermore, label movement can be introduced more readily into the visual periphery (over 15° eccentricity) because of reduced sensitivity in this region. Moreover, under the realistic viewing conditions that we used, motion of isolated labels is more easily detected than that of overlapping labels. This perhaps counterintuitive finding may be explained by visual masking due to the visual clutter arising from the label overlap. The quantitative description of the findings presented in this paper should be useful not only for label placement applications, but also for any cluttered AR or VR application in which designers wish to control the users’ visual attention, either making text labels more or less noticeable as needed.

Place, publisher, year, edition, pages
Piscataway, NJ, USA: IEEE , 2010. 203-206 p.
Series
IEEE Virtual Reality Annual International Symposium, ISSN 1087-8270
Keyword [en]
H.5.2 [Information Systems], User Interfaces, I.3 [Computing Methodologies], Computer Graphics
National Category
Computer Science
Identifiers
URN: urn:nbn:se:liu:diva-51741DOI: 10.1109/VR.2010.5444788ISI: 000287516000034ISBN: 978-1-4244-6237-7 (print)ISBN: 978-1-4244-6236-0 (print)OAI: oai:DiVA.org:liu-51741DiVA: diva2:277276
Conference
IEEE Virtual Reality Conference (VR), Waltham, MA, USA, 20-24 March 2010
Available from: 2009-11-16 Created: 2009-11-16 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, MagnusCooper, Matthew

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