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Proceedings Paper

Efficient Utilization Of Aperture And Detector By Optimal Coding
Author(s): K. J. Myers; R . F. Wagner; D. G. Brown; H. H. Barrett
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Paper Abstract

Performance for several apertures is presented for a number of Rayleigh discrimination tasks with signal and background exactly specified. Performance is defined as the squared signal-to-noise ratio of an ideal observer determined from statistical decision theory. The conclusions of Wagner, Brown, and Metz (1981) are shown to hold for different source-pair orientations and some other well-known (but non-ideal) figures of merit. When the background is assumed to be a known constant, and the source width and separation are also known, the performance of a simple open aperture increases as the aperture is enlarged. For a known source width a complex aperture can be designed which will give performance superior to a large open aperture for these simple discrimination tasks. For any of these apertures to be clinically relevant, performance comparisons over a wider range of clinically realistic tasks, including signal and object variability, must be considered.

Paper Details

Date Published: 1 May 1989
PDF: 12 pages
Proc. SPIE 1090, Medical Imaging III: Image Formation, (1 May 1989); doi: 10.1117/12.953201
Show Author Affiliations
K. J. Myers, Center for Devices and Radiological Health, FDA (United States)
R . F. Wagner, Center for Devices and Radiological Health, FDA (United States)
D. G. Brown, Center for Devices and Radiological Health, FDA (United States)
H. H. Barrett, University of Arizona (United States)


Published in SPIE Proceedings Vol. 1090:
Medical Imaging III: Image Formation
Samuel J. Dwyer; R. Gilbert Jost; Roger H. Schneider, Editor(s)

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