Estimation of human-observer templates in two-alternative forced-choice experiments

Craig K. Abbey; Miguel P. Eckstein; Francois O. Bochud

doi:10.1117/12.349653

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24 May 1999 Estimation of human-observer templates in two-alternative forced-choice experiments

Craig K. Abbey, Miguel P. Eckstein, Francois O. Bochud

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Proceedings Volume 3663, Medical Imaging 1999: Image Perception and Performance; (1999) https://doi.org/10.1117/12.349653
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

A method is presented for directly estimating the weights, or 'linear template' used by an observer performing a signal- known-exactly detection task in a two-alternative forced- choice (2-AFC) experiment. The approach generalizes prior work by Ahumada, and Beard and Ahumada, to 2-AFC experiments and correlated image noise, and yields an unbiased estimate of the observer template. The estimation procedure is checked against a known linear detection strategy, and human-observer templates estimated from some preliminary psychophysical experiments are shown.

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Craig K. Abbey, Miguel P. Eckstein, and Francois O. Bochud "Estimation of human-observer templates in two-alternative forced-choice experiments", Proc. SPIE 3663, Medical Imaging 1999: Image Perception and Performance, (24 May 1999); https://doi.org/10.1117/12.349653

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