Share Email Print

Proceedings Paper

Chirp-encoded optical processor for pattern recognition
Author(s): Qing Tang; Bahram Javidi
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We describe a joint transform correlator in which the reference signal and the input scene are placed in different input planes along the optical axis. We show that this system will focus the off-axis cross-correlation functions and the on-axis autocorrelation functions in different output planes. In a conventional joint transform correlator, these terms are produced in the same output plane. The effect of placing the input scene and the reference signal in different input planes is mathematically analyzed. Computer simulations, and experimental results are presented to illustrate the performance of this correlator. We show that for the nonlinear joint transform correlator, the higher order correlation terms are produced in different output planes.

Paper Details

Date Published: 25 October 1993
PDF: 12 pages
Proc. SPIE 1959, Optical Pattern Recognition IV, (25 October 1993); doi: 10.1117/12.160306
Show Author Affiliations
Qing Tang, Univ. of Connecticut (United States)
Bahram Javidi, Univ. of Connecticut (United States)

Published in SPIE Proceedings Vol. 1959:
Optical Pattern Recognition IV
David P. Casasent, Editor(s)

© SPIE. Terms of Use
Back to Top