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

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

doi:10.1117/12.55577

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

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

Research output: Contribution to journal › Article › peer-review

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 V_noise = (6.4C + 0.68)/√ξ, where V_noise 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.

Original language	English (US)
Pages (from-to)	110-113
Number of pages	4
Journal	Optical Engineering
Volume	29
Issue number	2
DOIs	https://doi.org/10.1117/12.55577
State	Published - 1990
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
General Engineering

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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.",

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AU - Pickard, Warren

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PY - 1990

Y1 - 1990

N2 - 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.

AB - 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.

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

Abstract

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