JPL has recently developed an all-optical Joint Transform Optical Correlator (OJTC) utilizing a high-speed rewritable holographic photopolymer film (HPF) as the key real-time holographic read/write medium. The high resolution HPF has enabled the use of an off-axis holographic recording scheme that has completely eliminated the zero-order crosstalk plaguing most of the state-of-the-art OJTC systems with an on-axis recording scheme. The high sensitivity and fast erasure capability of the HPF film has made possible the real-time updatable target recognition performance of the OJTC. The OJTC system architecture, optical implementation and experimental results demonstrating fingerprint recognition are described in this paper.

Date Published: 28 March 2005
PDF: 8 pages
Proc. SPIE 5816, Optical Pattern Recognition XVI, (28 March 2005); doi: 10.1117/12.607966

Published in SPIE Proceedings Vol. 5816:
Optical Pattern Recognition XVI
David P. Casasent; Tien-Hsin Chao, Editor(s)