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Proceedings Paper

Object detection and amplitude estimation based on maximum a-posteriori reconstructions
Author(s): Kenneth M. Hanson
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Paper Abstract

We report on the behavior ofthe linear maximum a posteriori (MAP) tomographic reconstruction technique as a function of the assumed rms noise αn in the measurements, which specifies the degree of confidence in the measurement data. The unconstrained MAP reconstructions are evaluated on the basis of the performance of two related tasks; object detection and amplitude estimation. It is found that the detectability of medium-sized discs remains constant up to relatively large αn before slowly diminishing. However, the amplitudes of the discs estimated from the MAP reconstructions increasingly deviate from their actual values as αn increases.

Paper Details

Date Published: 1 July 1990
PDF: 12 pages
Proc. SPIE 1231, Medical Imaging IV: Image Formation, (1 July 1990); doi: 10.1117/12.18794
Show Author Affiliations
Kenneth M. Hanson, Los Alamos National Lab. (United States)

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

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