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Proceedings Paper

Timing considerations of helmet-mounted display performance
Author(s): Gregory K. Tharp; Andrew M. Liu; Lloyd French; Steve Lai; Lawrence W. Stark
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Paper Abstract

The Helmet Mounted Display (HMD) system developed in our lab should be a useful teleoperator systems display if it increases operator performance of the desired task; it can, however, introduce degradation in performance due to display update rate constraints and communication delays. Display update rates are slowed by communication bandwidth and/or computational power limitations. We used simulated 3D tracking and pick-and-place tasks to characterize performance levels for a range of update rates. Initial experiments with 3D tracking indicate that performance levels plateau at an update rate between 10 and 20 Hz. We are currently running pick-and-place experiments and plan to explore if graphical enhancements that slow the display can increase performance more than their cost due to speed. Delays degrade performance in any manipulation task, and we have found that using the HMD with delay decreases performance as delay increases. We are also currently comparing effects produced by manipulator control and display control. Using a predictive display, we will explore if the display effects can be mitigated and if the HMD can be used to increase performance with delays.

Paper Details

Date Published: 27 August 1992
PDF: 7 pages
Proc. SPIE 1666, Human Vision, Visual Processing, and Digital Display III, (27 August 1992); doi: 10.1117/12.136003
Show Author Affiliations
Gregory K. Tharp, Univ. of California/Berkeley (United States)
Andrew M. Liu, Univ. of California/Berkeley (United States)
Lloyd French, Univ. of California/Berkeley (United States)
Steve Lai, Univ. of California/Berkeley (United States)
Lawrence W. Stark, Univ. of California/Berkeley (United States)

Published in SPIE Proceedings Vol. 1666:
Human Vision, Visual Processing, and Digital Display III
Bernice E. Rogowitz, Editor(s)

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