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Proceedings Paper

Maximum a-posteriori detection and figures of merit for detection under uncertainty
Author(s): Robert F. Wagner; Kyle J. Myers; Markku J. Tapiovaara; David G. Brown; Arthur E. Burgess
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Paper Abstract

The problem of image assessment is examined for several cases of parameter uncertainty. Several ideal and sub-ideal observers are considered and figures of merit (FOM) for describing their performance are considered. Advantages and disadvantages of these FOMs are enumerated. The spectrum of noise equivalent quanta, NEQ(f), appears to be the most useful for evaluating a broad class of practical problems since the performance of the best-linear as well as the ideal non-linear observers considered here is monotonic with its components. However, more work is required within this context to quantify the effects of the "null space," or regions in object space for which NEQ = 0. These regions derive from incomplete measurement sets and may lead to severe image degrading artifacts that are not adequately covered by any FOMs considered here.

Paper Details

Date Published: 1 July 1990
PDF: 10 pages
Proc. SPIE 1231, Medical Imaging IV: Image Formation, (1 July 1990); doi: 10.1117/12.18797
Show Author Affiliations
Robert F. Wagner, Ctr. for Devices and Radiological Health/FDA (United States)
Kyle J. Myers, Ctr. for Devices and Radiological Health/FDA (United States)
Markku J. Tapiovaara, Finnish Ctr. for Radiation and Nuclear Safety (Finland)
David G. Brown, Ctr. for Devices and Radiological Health/FDA (United States)
Arthur E. Burgess, Ctr. for Devices and Radiological Health/FDA and Univ. of British Columbia (United States)

Published in SPIE Proceedings Vol. 1231:
Medical Imaging IV: Image Formation
Roger H. Schneider, Editor(s)

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