Usability of a virtual reality manual wheelchair simulator
In: Disability and rehabilitation. Assistive technology : special issue, Band 18, Heft 8, S. 1489-1499
ISSN: 1748-3115
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In: Disability and rehabilitation. Assistive technology : special issue, Band 18, Heft 8, S. 1489-1499
ISSN: 1748-3115
In: Cahiers du Québec 163
In: Communications, littérature
In: Human factors: the journal of the Human Factors Society, Band 62, Heft 4, S. 656-670
ISSN: 1547-8181
ObjectiveWe describe a networked, two-user virtual reality (VR) power wheelchair (PWC) simulator system in which an actor (client) and an observer (clinician) meet. We then present a study with 15 observers (expert clinicians) evaluating the effect of three principal forms of viewpoint control (egocentric-egomotion, egocentric-tethered, and client-centric) on the observer's assessment of driving tasks in a virtual environment (VE).BackgroundVR allows for the simulation and assessment of real-world tasks in a controlled, safe, and repeatable environment. Observing users' movement behavior in such a VE requires appropriate viewpoint control for the observer. The VR viewpoint user interface should allow an observer to make judgments equivalent or even superior to real-world situations.MethodA purpose-built VR PWC simulator was developed. In a series of PWC driving tasks, we measured the perceived ease of use and sense of presence of the observers and compared the virtual assessment with real-world "gold standard" scores, including confidence levels in judgments.ResultsFindings suggest that with more immersive techniques, such as egomotion and tethered egocentric viewpoints, judgments are both more accurate and more confident. The ability to walk and/or orbit around the view significantly affected the observers' sense of presence.ConclusionIncorporating the observer into the VE, through egomotion, is an effective method for assessing users' behavior in VR with implications for the transferability of virtual experiences to the real world.ApplicationOur application domain serves as a representative example for tasks where the movement of users through a VE needs to be evaluated.
In: Disability and rehabilitation. Assistive technology : special issue, Band 15, Heft 1, S. 76-91
ISSN: 1748-3115
In: Disability and rehabilitation. Assistive technology : special issue, Band 7, Heft 3, S. 226-233
ISSN: 1748-3115
In: Disability and rehabilitation. Assistive technology : special issue, Band 17, Heft 2, S. 134-151
ISSN: 1748-3115
In: Disability and rehabilitation. Assistive technology : special issue, Band 14, Heft 3, S. 267-275
ISSN: 1748-3115
In: Disability and rehabilitation. Assistive technology : special issue, Band 18, Heft 1, S. 109-117
ISSN: 1748-3115
In: Disability and rehabilitation. Assistive technology : special issue, Band 19, Heft 2, S. 367-382
ISSN: 1748-3115
In: Marine policy, Band 74, S. 77-84
ISSN: 0308-597X
In: Marine policy: the international journal of ocean affairs, Band 74, S. 77-84
ISSN: 0308-597X
In: Disability and rehabilitation. Assistive technology : special issue, Band 19, Heft 2, S. 516-524
ISSN: 1748-3115
In: Disability and rehabilitation. Assistive technology : special issue, Band 13, Heft 1, S. 78-86
ISSN: 1748-3115
In: Disability and rehabilitation. Assistive technology : special issue, Band 10, Heft 3, S. 211-215
ISSN: 1748-3115
In: Disability and rehabilitation. Assistive technology : special issue, Band 14, Heft 4, S. 317-324
ISSN: 1748-3115