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Proceedings Paper

Signal-to-noise analysis of various imaging systems
Author(s): Peter J. Miller; Andrew Robert Harvey
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Paper Abstract

Recent papers comparing the relative signal to noise performance of filters and interferometers for visible and near-IR spectral imaging have reached divergent conclusions. Others have presented the proposition that interferometer systems, by capturing light from multiple spectral channels bands at once, inherently outperform filter-type systems, which capture a single channel at a time. In this paper, a general analysis is provided that establishes a basis for comparison between band-sequential spectrometers and imaging interferometers in the shot-noise limit (set by Poisson statistics of the number of electrons produced at the detector), and in practice. It is shown that factors such as lamp flicker and sample stability can introduce much more error than shot noise does. This, one must be aware that the use of shot-noise limited detectors does not ensure shot- noise limited images.

Paper Details

Date Published: 2 July 2001
PDF: 6 pages
Proc. SPIE 4259, Biomarkers and Biological Spectral Imaging, (2 July 2001); doi: 10.1117/12.432495
Show Author Affiliations
Peter J. Miller, Cambridge Research & Instrumentation, Inc. (United States)
Andrew Robert Harvey, Cranfield Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 4259:
Biomarkers and Biological Spectral Imaging
Gregory H. Bearman; Darryl J. Bornhop; Richard M. Levenson; Darryl J. Bornhop, Editor(s)

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