Abstract:
OBJECTIVE:This study examined the concept of dynamic viewpoint tethering for enhancing performance in 3-D avatar control tasks. BACKGROUND:Dynamic viewpoint tethering refers to a viewpoint animation technique that couples a display viewpoint to a controlled avatar through a virtual tether. A dynamic tether, modeled as a mass spring damper system, can potentially generate desirable viewpoint behavior because of its ability to produce frequency-separated viewpoint responses. This study investigated the impact of a tether's rigidity and damping properties on users' navigational performance. METHODS:Twelve participants took part in a simulated 3-D aerial navigational task. Performance was evaluated with respect to local guidance and global awareness. RESULTS:Root mean square error scores revealed a decrease in local guidance performance when (a) the tether was either severely underdamped or overdamped and (b) the tether's rigidity approached either zero or infinity. In addition, (c) global performance was better for higher-frequency forcing functions. CONCLUSION:Critical damping and medium rigidity can be optimized during design for enhancing users' navigational efficiency. APPLICATION:Guidelines generated from this study support future viewpoint design in interactive virtual reality applications.
journal_name
Hum Factorsjournal_title
Human factorsauthors
Wang W,Milgram Pdoi
10.1177/0018720809340031subject
Has Abstractpub_date
2009-06-01 00:00:00pages
393-403issue
3eissn
0018-7208issn
1547-8181journal_volume
51pub_type
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