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Proceedings Paper

ROC theory under the exponential assumption to analyze visual detection experimental data
Author(s): Francisco J. Sanchez-Marin
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Paper Abstract

Psychophysical data of 30 human observers that were not properly explained by ROC theory under the Gaussian assumption were analyzed assuming underlying exponential distributions. The detection experiments were done using the rating procedure. Under the power-law assumption a detectability index, similar to d', was deduced. An interesting result was that p(a), the area under the ROC, which is a free-distribution parameter, is very similar to the area under the power-law ROC for all our observers.

Paper Details

Date Published: 26 June 2001
PDF: 8 pages
Proc. SPIE 4324, Medical Imaging 2001: Image Perception and Performance, (26 June 2001); doi: 10.1117/12.431191
Show Author Affiliations
Francisco J. Sanchez-Marin, Ctr. de Investigaciones en Optica (Mexico)

Published in SPIE Proceedings Vol. 4324:
Medical Imaging 2001: Image Perception and Performance
Elizabeth A. Krupinski; Dev Prasad Chakraborty, Editor(s)

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