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Optimized model of oriented-line-target detection using vertical and horizontal filters.

S Westland·D H Foster
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Abstract

A line-element target differing sufficiently in orientation from a background of line elements can be visually detected easily and quickly; orientation thresholds for such detection are lowest when the background elements are all vertical or all horizontal. A simple quantitative model of this performance was constructed from three processing stages: (1) linear filtering by two classes of anisotropic filters, (2) nonlinear point transformation, and (3) estimation of a signal-to-noise ratio based on responses to images with and without a target. A Monte Carlo optimization procedure (simulated annealing) was used to determine the model parameter values required for providing an accurate description of psychophysical data on orientation increment thresholds.

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HumansMathematicsModels, BiologicalOrientationPsychophysicsSensory ThresholdsVisual PerceptionJournal ArticleResearch Support, Non-U.S. Gov't

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BibTeXRIS

S Westland, D H Foster. 1995. Optimized model of oriented-line-target detection using vertical and horizontal filters.. https://doi.org/10.1364/josaa.12.001617

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