Studies Of Photographic Grain In A Coherent Optical System: Signal-Dependence And Its Implications

Scott A. Armstrong

doi:10.1117/12.956191

31 August 1978 Studies Of Photographic Grain In A Coherent Optical System: Signal-Dependence And Its Implications

Scott A. Armstrong

Proceedings Volume 0137, Airborne Reconnaissance III; (1978) https://doi.org/10.1117/12.956191
Event: 1978 Technical Symposium East, 1978, Washington, D.C., United States

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.

Citation Download Citation

Scott A. Armstrong "Studies Of Photographic Grain In A Coherent Optical System: Signal-Dependence And Its Implications", Proc. SPIE 0137, Airborne Reconnaissance III, (31 August 1978); https://doi.org/10.1117/12.956191

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