A model previously used for the perception of graininess in uniform-density images that exist in electrophotography, has been verified for use in silver-halide photography. In addition, a model has been developed which estimates the sensation of graininess in photographic images of non -uniform density. Given the relationship between graininess and density in uniform-density images, the graininess in a complex image is weighted by the frequency of occurrence of each measured density in the image. Such an analysis is compared to subjective evaluations. It is shown that the graininess model is useful in predicting the sensation of graininess in photographs.

Library of Congress Subject Headings

Images, Photographic

Publication Date


Document Type


Department, Program, or Center

School of Photographic Arts and Sciences (CIAS)


Engeldrum, Peter

Advisor/Committee Member

Francis, Ronald


Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works. Physical copy available through RIT's The Wallace Library at: TR222.M35 1983


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