ROC theory under the exponential assumption to analyze visual detection experimental data

Francisco J. Sanchez-Marin

doi:10.1117/12.431191

26 June 2001 ROC theory under the exponential assumption to analyze visual detection experimental data

Francisco J. Sanchez-Marin

Proceedings Volume 4324, Medical Imaging 2001: Image Perception and Performance; (2001) https://doi.org/10.1117/12.431191
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

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.

Citation Download Citation

Francisco J. Sanchez-Marin "ROC theory under the exponential assumption to analyze visual detection experimental data", Proc. SPIE 4324, Medical Imaging 2001: Image Perception and Performance, (26 June 2001); https://doi.org/10.1117/12.431191

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