MACBETH: management of avatar conflict by employment of a technique hybrid Public Deposited

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Last Modified
  • March 21, 2019
Creator
  • Burns, Eric M.
    • Affiliation: College of Arts and Sciences, Department of Computer Science
Abstract
  • Since virtual objects do not prevent users from penetrating them, a virtual environment user may place his real hand inside a virtual object. If the virtual environment system prevents the user's hand avatar from penetrating the object, the hand avatar must be placed somewhere other than the user's real hand position. I propose a technique, named MACBETH (Management of Avatar Conflict By Employment of a Technique Hybrid) for managing the position of a user's hand avatar in a natural manner after it has been separated from the user's real hand due to collision with a virtual object. This technique balances visual/proprioceptive discrepancy in position and velocity by choosing each so that they are equally detectable. To gather the necessary information to implement MACBETH, I performed user studies to determine users' detection thresholds for visual/proprioceptive discrepancy in hand position and velocity. I then ran a user study to evaluate MACBETH against two other techniques for managing the hand avatar position: the rubber-band and incremental-motion techniques. Users rated MACBETH as more natural than the other techniques and preferred MACBETH over both. Users performed better on a hand navigation task with MACBETH than with the incremental-motion technique and performed equally well as with the rubber-band technique.
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  • In Copyright
Advisor
  • Brooks, Frederick P.
Degree granting institution
  • University of North Carolina at Chapel Hill
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  • Open access
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