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  • Plumert, Jodie M.  (3)
  • Computer Science  (3)
Type of Medium
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  • Computer Science  (3)
RVK
  • 1
    Online Resource
    Online Resource
    Association for Computing Machinery (ACM) ; 2011
    In:  ACM Transactions on Applied Perception Vol. 8, No. 4 ( 2011-11), p. 1-18
    In: ACM Transactions on Applied Perception, Association for Computing Machinery (ACM), Vol. 8, No. 4 ( 2011-11), p. 1-18
    Abstract: We conducted a series of experiments to investigate effects of scale changes on distance perception in virtual environments. All experiments were carried out in an HMD. Participants first made distance estimates with feedback in a virtual tunnel (adaptation) and then made distance estimates without feedback in a differently-scaled virtual environment (test). We examined several types of scale changes, including changing the size of (1) the tunnel, (2) the targets, and (3) the separation of the two targets. Changes in target size always affected distance estimates at test. When the targets became smaller, participants overshot distance and when the targets became larger, participants undershot distance. Changes in the size of the tunnel or the separation between the targets (without a change in the size of the targets) had a minimal effect on distance estimates. These results indicate that distance estimates at test were strongly influenced by familiar size cues for distance. The discussion focuses on the stability of calibration processes and mechanisms for cue integration for perceiving distance in virtual environments.
    Type of Medium: Online Resource
    ISSN: 1544-3558 , 1544-3965
    RVK:
    Language: English
    Publisher: Association for Computing Machinery (ACM)
    Publication Date: 2011
    detail.hit.zdb_id: 2155384-1
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Online Resource
    Online Resource
    Association for Computing Machinery (ACM) ; 2005
    In:  ACM Transactions on Applied Perception Vol. 2, No. 3 ( 2005-07), p. 216-233
    In: ACM Transactions on Applied Perception, Association for Computing Machinery (ACM), Vol. 2, No. 3 ( 2005-07), p. 216-233
    Abstract: We conducted three experiments to compare distance perception in real and virtual environments. In Experiment 1, adults estimated how long it would take to walk to targets in real and virtual environments by starting and stopping a stopwatch while looking at a target person standing between 20 and 120 ft away. The real environment was a large grassy lawn in front of a university building. We replicated this scene in our virtual environment using a nonstereoscopic, large-screen immersive display system. We found that people underestimated time to walk in both environments for distances of 40 to 60 ft and beyond. However, time-to-walk estimates were virtually identical across the two environments, particularly when people made real environment estimates first. In Experiment 2, 10- and 12-year-old children and adults estimated time to walk in real and virtual environments both with and without vision. Adults underestimated time to walk in both environments for distances of 60 to 80 ft and beyond. Again, their estimates were virtually identical in the real and virtual environment both with and without vision. Twelve-year-olds' time-to-walk estimates were also very similar across the two environments under both viewing conditions, but 10-year-olds exhibited greater underestimation in the virtual than in the real environment. A third experiment showed that adults' time-to-walk estimates were virtually identical to walking without vision. We conclude that distance perception may be better in virtual environments involving large-screen immersive displays than in those involving head-mounted displays (HMDS).
    Type of Medium: Online Resource
    ISSN: 1544-3558 , 1544-3965
    RVK:
    Language: English
    Publisher: Association for Computing Machinery (ACM)
    Publication Date: 2005
    detail.hit.zdb_id: 2155384-1
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Online Resource
    Online Resource
    Association for Computing Machinery (ACM) ; 2010
    In:  ACM Transactions on Applied Perception Vol. 7, No. 4 ( 2010-07), p. 1-18
    In: ACM Transactions on Applied Perception, Association for Computing Machinery (ACM), Vol. 7, No. 4 ( 2010-07), p. 1-18
    Abstract: We conducted two experiments that compared distance perception in real and virtual environments in six visual presentation methods using either timed imagined walking or direct blindfolded walking, while controlling for several other factors that could potentially impact distance perception. Our presentation conditions included unencumbered real world, real world seen through an HMD, virtual world seen through an HMD, augmented reality seen through an HMD, virtual world seen on multiple, large immersive screens, and photo-based presentation of the real world seen on multiple, large immersive screens. We found that there was a similar degree of underestimation of distance in the HMD and large-screen presentations of virtual environments. We also found that while wearing the HMD can cause some degree of distance underestimation, this effect depends on the measurement protocol used. Finally, we found that photo-based presentation did not help to improve distance perception in a large-screen immersive display system. The discussion focuses on points of similarity and difference with previous work on distance estimation in real and virtual environments.
    Type of Medium: Online Resource
    ISSN: 1544-3558 , 1544-3965
    RVK:
    Language: English
    Publisher: Association for Computing Machinery (ACM)
    Publication Date: 2010
    detail.hit.zdb_id: 2155384-1
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
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