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

被引：30

作者：

Abbey, CK ^{[1
]}

Eckstein, MP ^{[1
]}

Bochud, FO ^{[1
]}

机构：

[1] Cedars Sinai Med Ctr, Dept Med Phys & Imaging, Los Angeles, CA 90048 USA

来源：

MEDICAL IMAGING 1999: IMAGE PERCEPTION AND PERFORMANCE | 1999年 / 3663卷

关键词：

visual signal detection; observer template; model observer; two-alternative forced-choice detection;

D O I：

10.1117/12.349653

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

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.

引用

页码：284 / 295

页数：12

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