Locating faults indicated by polygon displays.

Author(s)
MacRae, A.W. & Milligan, S.
Year
Abstract

In a polygon display, each system parameter is indicated by the radial distance of one vertex of a polygon from the centre. Earlier results showed that the detectability of faults is enhanced by increasing the number of polygon vertices from four to twenty but a practical display-control system also requires the absence of adverse effects with more parameters. Speed and accuracy of responses when peripherally viewing a polygon display with an inset dynamic task were investigated for two tasks: detecting the presence of an out-of-limits parameter and locating the most deviant parameter. The number of vertices in the display was varied, and the vertices were permitted either a wide or a narrow range of variation. Performance was best when the deviation of the extreme vertex was outwards. As the number of parameters increased from 4 to 20, speed and accuracy in detecting a fault remained constant or improved if system variability was low but locating the most extreme parameter became poorer, especially when the other vertices varied widely. (A)

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Publication

Library number
C 10715 (In: C 10692 [electronic version only]) /90 /83 / IRRD 892092
Source

In: Vision in vehicles V : proceedings of the fifth international conference on vision in vehicles, Glasgow, Scotland, autumn 1993, p. 195-201, 3 ref.

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