Abstract

A method is described for producing samples of an “ideal model” of the developed photographic image (opaque circular dots distributed randomly over a clear background). The dots originate as random scintillations on the face of a cathode-ray tube and are recorded photographically. Expressions for density, root-mean-square density deviation, and Selwyn granularity are derived on the basis of the model. Samples produced by this method are shown experimentally to conform to the expected properties.

© 1961 Optical Society of America

Relation Between Granularity and Density for a Random-Dot Model

B. E. Bayer
J. Opt. Soc. Am. 54(12) 1485-1490 (1964)

Approximation of the Sine-Wave Response of Photographic Emulsions

Dieter P. Paris
J. Opt. Soc. Am. 51(9) 988-991 (1961)

Information Capacity of Photographic Films

R. Clark Jones
J. Opt. Soc. Am. 51(11) 1159-1171 (1961)

Precision Method for Determination of Pore Structure by Photographic Photometry

Julius Cohen and Aurelius Sandor
J. Opt. Soc. Am. 51(9) 1023-1028 (1961)

Systems Analysis of the Photographic Process. II. Transfer Function Measurements

D. H. Kelly
J. Opt. Soc. Am. 51(3) 319-330 (1961)