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

Ronald G. Driggers; Carl E. Halford; J. Warren Pickard Jr.; Kevin F. Williams

doi:10.1117/12.55577

1 February 1990 Effects of additive noise on four bar target detection as a function of contrast and spatial frequency

Ronald G. Driggers, Carl E. Halford, J. Warren Pickard Jr., Kevin F. Williams

Author Affiliations +

Optical Engineering, Vol. 29, Issue 2, (February 1990). https://doi.org/10.1117/12.55577

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)/??, where Vnoise IS the amount of noise that can be tolerated, C is the contrast, and ? 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.

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Ronald G. Driggers, Carl E. Halford, J. Warren Pickard Jr., and Kevin F. Williams "Effects of additive noise on four bar target detection as a function of contrast and spatial frequency," Optical Engineering 29(2), (1 February 1990). https://doi.org/10.1117/12.55577

Published: 1 February 1990

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