Photographic Image Enhancement Using Chemical Treatment Techniques

Richard R. Pettijohn

doi:10.1117/12.7972791

1 October 1981 Photographic Image Enhancement Using Chemical Treatment Techniques

Richard R. Pettijohn

Author Affiliations +

Optical Engineering, Vol. 20, Issue 5, 205681 (October 1981). https://doi.org/10.1117/12.7972791

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.

Citation Download Citation

Richard R. Pettijohn "Photographic Image Enhancement Using Chemical Treatment Techniques," Optical Engineering 20(5), 205681 (1 October 1981). https://doi.org/10.1117/12.7972791

Published: 1 October 1981

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available