Abstract/Details

MACBETH: Management of avatar conflict by employment of a technique hybrid


2007 2007

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Abstract (summary)

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.

Indexing (details)


Subject
Computer science
Classification
0984: Computer science
Identifier / keyword
Applied sciences; Avatar conflict; Virtual reality
Title
MACBETH: Management of avatar conflict by employment of a technique hybrid
Author
Burns, Eric
Number of pages
75
Publication year
2007
Degree date
2007
School code
0153
Source
DAI-B 68/04, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780549008064
Advisor
Brooks, Frederick P., Jr.
University/institution
The University of North Carolina at Chapel Hill
Department
Computer Science
University location
United States -- North Carolina
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3262622
ProQuest document ID
304841817
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304841817
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