JVRC 13: Joint Virtual Reality Conference of EGVE - EuroVR

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https://diglib.eg.org/handle/10.2312/2146

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Browsing JVRC 13: Joint Virtual Reality Conference of EGVE - EuroVR by Subject "H.5.1 [Information Interfaces and Presentation]"

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    Background Motion, Clutter, and the Impact on Virtual Object Motion Perception in Augmented Reality
    (The Eurographics Association, 2013) Ferrer, Vicente; Yang, Yifan; Perdomo, Alex; Quarles, John; Betty Mohler and Bruno Raffin and Hideo Saito and Oliver Staadt
    Background motion and visual clutter are present in almost all augmented reality applications. However, there is minimal prior work that has investigated the effects that background motion and clutter (e.g., a busy city street) can have on the perception of virtual object motion in augmented reality. To investigate these issues, we conducted an experiment in which participants' perceptions of changes in overlaid virtual object velocity were tested with several levels of background motion, background clutter, virtual object motion, and virtual object clutter. Our experiment offers a novel approach to assessing virtual object motion perception and gives new insights into the impact that background clutter and motion has on perception in augmented reality.
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    Exploring Distant Objects with Augmented Reality
    (The Eurographics Association, 2013) Tatzgern, Markus; Grasset, Raphael; Veas, Eduardo; Kalkofen, Denis; Seichter, Hartmut; Schmalstieg, Dieter; Betty Mohler and Bruno Raffin and Hideo Saito and Oliver Staadt
    Augmented reality (AR) enables users to retrieve additional information about the real world objects and locations. Exploring such location-based information in AR requires physical movement to different viewpoints, which may be tiring and even infeasible when viewpoints are out of reach. In this paper, we present object-centric exploration techniques for handheld AR that allow users to access information freely using a virtual copy metaphor to explore large real world objects. We evaluated our interfaces in controlled conditions and collected first experiences in a real world pilot study. Based on our findings, we put forward design recommendations that should be considered by future generations of location-based AR browsers, 3D tourist guides, or in situated urban planning.
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    Visual Attention to Wayfinding Aids in Virtual Environments
    (The Eurographics Association, 2013) Bertrand, Jeffrey; Ebrahimi, Elham; Wachter, Aliceann; Luo, Jun; Babu, Sabarish V.; Duchowski, Andrew T.; Meehan, Nancy; Gramopadhye, Anand K.; Betty Mohler and Bruno Raffin and Hideo Saito and Oliver Staadt
    In an empirical evaluation, we examined participants' visual attention allocation to a dynamic wayfinding map in a complex simulation meant to educate medical practitioners in a hand hygiene protocol. Complex virtual environments (VEs) are novel types of virtual worlds that embody large spaces, interactive virtual humans, static and dynamic virtual entities, and intricate tasks that simulate real-world settings. Previous investigations of wayfinding aids have focused on the evaluation of spatial orientation, knowledge acquisition, and usage. We employed an eye tracker and created visualization tools to quantitatively and qualitatively analyze participants' visual attention to the wayfinding aid in our simulation. Results suggest that the proportion of time of gaze, total gaze count, and gaze transitions between various elements of the VE are altered with the use of the wayfinding aid. Participants also tend to employ innovative visual strategies in order to efficiently plan routes and accomplish tasks in the VE.