Statistical processes limiting the noise of a screen-film system

Jacob Beutel; Michael Yampolsky; Rodney Shaw

doi:10.1117/12.174284

1 May 1994 Statistical processes limiting the noise of a screen-film system

Jacob Beutel, Michael Yampolsky, Rodney Shaw

Proceedings Volume 2163, Medical Imaging 1994: Physics of Medical Imaging; (1994) https://doi.org/10.1117/12.174284
Event: Medical Imaging 1994, 1994, Newport Beach, CA, United States

Abstract

In the present contribution we have investigated the nature and role of the probability distribution function governing the fluctuations in image density about a mean level, and especially the relationship of this distribution to the Wiener spectrum associated with image noise. Experimental measurements are shown confirming that, at a given mean density level, the probability distribution function is independent of exposure statistics regardless of whether the film is exposed to uncorrelated light photons or to correlated light via an intensifying screen. We therefore conclude that differences in the associated Wiener spectrum are entirely attributable to changes in the extent of the autocorrelation interval and not due to changes in the shape or extent of the probability distribution function.

Citation Download Citation

Jacob Beutel, Michael Yampolsky, and Rodney Shaw "Statistical processes limiting the noise of a screen-film system", Proc. SPIE 2163, Medical Imaging 1994: Physics of Medical Imaging, (1 May 1994); https://doi.org/10.1117/12.174284

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