Efficient Utilization Of Aperture And Detector By Optimal Coding

K. J. Myers; R . F. Wagner; D. G. Brown; H. H. Barrett

doi:10.1117/12.953201

1 May 1989 Efficient Utilization Of Aperture And Detector By Optimal Coding

K. J. Myers, R . F. Wagner, D. G. Brown, H. H. Barrett

Proceedings Volume 1090, Medical Imaging III: Image Formation; (1989) https://doi.org/10.1117/12.953201
Event: Medical Imaging III, 1989, Newport Beach, CA, United States

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.

Citation Download Citation

K. J. Myers, R . F. Wagner, D. G. Brown, and H. H. Barrett "Efficient Utilization Of Aperture And Detector By Optimal Coding", Proc. SPIE 1090, Medical Imaging III: Image Formation, (1 May 1989); https://doi.org/10.1117/12.953201

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