Timing considerations of helmet-mounted display performance

Gregory K. Tharp; Andrew M. Liu; Lloyd French; Steve Lai; Lawrence W. Stark

doi:10.1117/12.136003

27 August 1992 Timing considerations of helmet-mounted display performance

Gregory K. Tharp, Andrew M. Liu, Lloyd French, Steve Lai, Lawrence W. Stark

Proceedings Volume 1666, Human Vision, Visual Processing, and Digital Display III; (1992) https://doi.org/10.1117/12.136003
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

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.

Citation Download Citation

Gregory K. Tharp, Andrew M. Liu, Lloyd French, Steve Lai, and Lawrence W. Stark "Timing considerations of helmet-mounted display performance", Proc. SPIE 1666, Human Vision, Visual Processing, and Digital Display III, (27 August 1992); https://doi.org/10.1117/12.136003

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