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Proceedings Paper

CCD/LCD holographic recording and display
Author(s): Amy S. Kransteuber; Don A. Gregory
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Paper Abstract

The combination of a high resolution charge-coupled device camera and a phase modulating liquid crystal array allows real-time holographic (interference) fringes to be detected and displayed. The original object may then be reconstructed optically. A modified Mach-Zehnder (Leith-Upatnieks) architecture is utilized for producing the required small object-to-reference beam angle. The hologram is updated and reconstructed at television field rates. Several analog reconstructions are presented as examples of the performance of the simple system. If the input scene is optically Fourier transformed, the system may be used to produce real-time Fourier transform matched filters. These filters can be displayed immediately in an optical correlator for pattern recognition applications.

Paper Details

Date Published: 9 March 1999
PDF: 6 pages
Proc. SPIE 3715, Optical Pattern Recognition X, (9 March 1999); doi: 10.1117/12.341297
Show Author Affiliations
Amy S. Kransteuber, U.S. Army Aviation and Missile Command (United States)
Don A. Gregory, Univ. of Alabama in Huntsville (United States)

Published in SPIE Proceedings Vol. 3715:
Optical Pattern Recognition X
David P. Casasent; Tien-Hsin Chao, Editor(s)

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