Analytical expressions of average transmittance and the transmittance autocorrelation function of a random-dot model that has a size distribution of grain aggregations are presented. The results are expressed by use of an extended random-dot model that has been developed by the authors. Numerical illustrations of the Wiener spectrum are shown in order to illustrate the effects of uniform distributions of the radius of grain aggregations.
© 1985 Optical Society of America
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