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Abstract

Variables affecting Dynamic Visual Acuity are important in the design of industrial inspection tasks. The objective of the present study was to investigate the effects of target-background contrast, target size, and linear velocity upon DVA.

Photographed block landolt rings were placed on white and grey backgrounds to produce ten uniformly graded contrast levels between target and background. These were then mounted on standard 35 mm photographic slide frames (2 in. x 2 in.). Gaps in the rings were oriented toward the corners of the frames.

For a given viewing time, an increase in linear velocity resulted in a marked decrease in DVA ability. Also, for a given linear velocity, an increase in viewing time resulted in an increase in DVA ability. Contrast levels and display width also affected performance.

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An Investigation of Effects of Contrast,and Linear Velocity upon Dynamic Visual Acuity

Abstract

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References