Abstract
People have been looking for means of recovering underdeveloped images since the inception of photography. The use of two partially reflective parallel mirrors on either side of the negative is one of the more simple possabilities. This system has been investigated to see how much contrast enhancement it provides and what affect it has on resolution and graininess. It has been found that contrast gains of 1.5 to about 3.0 times can be expected for images with densities from .14 to .30. Also the resolution of low contrast images is increased slightly and graininess is decreased by almost three times. However, the effectiveness of the system does seem to be limited to very low density images.
Library of Congress Subject Headings
Images, Photographic
Publication Date
5-1-1978
Document Type
Thesis
Department, Program, or Center
School of Photographic Arts and Sciences (CIAS)
Advisor
Carson, John
Recommended Citation
Boden, Dudley, "Image Quality of a Multiple-Pass Optical Contrast Enhancement Technique" (1978). Thesis. Rochester Institute of Technology. Accessed from
https://repository.rit.edu/theses/5112
Campus
RIT – Main Campus
Comments
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.B62