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Proceedings Paper

Image Quality Effects In Optical Correlators
Author(s): David Casasent; Saulius Eiva; B. V. K. Vijaya Kumar
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Paper Abstract

Three aspects of image quality and their effects in an optical matched spatial filter correlator are described. These concern operation on: digitized imagery, data with low modulation and low space bandwidth product, and synthetic reference imagery. To address these practical problems, we employ: spatial filtering, edge enhancement, use of different apertures, photoreduced imagery, and digital preprocessed data. The first exuerimental data on optical matched spatial filter correlations with synthetic reference imagery and the first comparative data on digitally and optically processed multisensor image correlations are included. From these experiments, we find an optical weighted matched spatial filter correlator to be adequate for most multisensor data and that advanced digital preprocessing operators are necessary when presently available synthetic reference imagery is used.

Paper Details

Date Published: 28 December 1981
PDF: 10 pages
Proc. SPIE 0310, Image Quality, (28 December 1981); doi: 10.1117/12.932867
Show Author Affiliations
David Casasent, Carnegie-Mellon University (United States)
Saulius Eiva, Carnegie-Mellon University (United States)
B. V. K. Vijaya Kumar, Carnegie-Mellon University (United States)


Published in SPIE Proceedings Vol. 0310:
Image Quality
Patrick S. Cheatham, Editor(s)

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