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Proceedings Paper

Studies Of Photographic Grain In A Coherent Optical System: Signal-Dependence And Its Implications
Author(s): Scott A. Armstrong
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Paper Abstract

The signal-dependence of photographic grain is easily demonstrated by studying the first order statistics (mean and variance) of the scattered light in a coherent optical spectrum analyzer. It is shown empirically and from simple theoretical considerations that the granularity of the photographic material can be determined using a coherent measurement and can be interpreted as an inverse signal to noise ratio. The traditional linear Fourier domain filter can be shown by simple considerations to be ill-suited for dealing with the signal-dependence of photographic grain.

Paper Details

Date Published: 31 August 1978
PDF: 7 pages
Proc. SPIE 0137, Airborne Reconnaissance III, (31 August 1978); doi: 10.1117/12.956191
Show Author Affiliations
Scott A. Armstrong, University of Rochester (United States)

Published in SPIE Proceedings Vol. 0137:
Airborne Reconnaissance III
John H. Smith; Theodore C. Freitag, Editor(s)

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