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Optical Engineering

Photographic Image Enhancement Using Chemical Treatment Techniques
Author(s): Richard R. Pettijohn
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Paper Abstract

Methods of enhancing underdeveloped, underexposed, or low optical density regions of properly exposed silver halide images using chemical treat ment techniques are reviewed and discussed. These procedures consist of modifying the transmission or emission characteristics of the original negative. Transmission methods increase the effective optical density of the original image by deposition of chemicals at or on the original silver grains and are therefore destructive. Emission methods such as autoradiography and fluores-cence provide a nondestructive enhancement alternative to the transmission approach.

Paper Details

Date Published: 1 October 1981
PDF: 7 pages
Opt. Eng. 20(5) 205681 doi: 10.1117/12.7972791
Published in: Optical Engineering Volume 20, Issue 5
Show Author Affiliations
Richard R. Pettijohn, Advanced Research and Applications Corporation (United States)

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