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Optical Engineering

Effects of additive noise on four bar target detection as a function of contrast and spatial frequency
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Paper Abstract

A psychovisual experiment with 80 observers determined the amount of additive noise an observer could tolerate in resolving 36 different bar targets. The results show that the detection threshold noise can be represented by a simple analytical expression with contrast and spatial frequency as variables. The expression that closely matched the data is Vnoise (6.4C + 0.68)/√ξ, where Vnoise is the amount of noise that can be tolerated, C is the contrast, and ξ is the spatial frequency in cycles/ radian. The numerical values are a function of the monitor used and are readily obtained by a simple measurement.

Paper Details

Date Published: 1 February 1990
PDF: 4 pages
Opt. Eng. 29(2) doi: 10.1117/12.55577
Published in: Optical Engineering Volume 29, Issue 2
Show Author Affiliations
Ronald G. Driggers
Carl E. Halford, Memphis State Univ. (United States)
J. Warren Pickard, Sverdrop Technology (United States)
Kevin F. Williams, Martin Marietta Corp. (United States)


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