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Optical Engineering

Optical Image Subtraction
Author(s): John F. Ebersole
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Paper Abstract

There are several methods for optically subtracting one image from another in order to detect differences between scenes or between photographs of scenes. There are many applications for such a technology, including earth resource studies, meteorology, automatic surveillance and/or inspection, pattern recognition, urban growth studies, and bandwidth compression. This paper presents an overview of several techniques for obtaining optical image subtraction, including holographic, interferometric, coding, and positive-negative superposition methods. As part of this review, a table is presented summa-rizing and comparing the characteristics of more than twenty-five approaches. An extensive bibliography is also given.

Paper Details

Date Published: 1 October 1975
PDF: 12 pages
Opt. Eng. 14(5) 145436 doi: 10.1117/12.7971809
Published in: Optical Engineering Volume 14, Issue 5
Show Author Affiliations
John F. Ebersole, Itek Corporation (United States)

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