28 March 2005 Optical joint transform correlator using high-speed holographic photopolymer film
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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.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tien-Hsin Chao, "Optical joint transform correlator using high-speed holographic photopolymer film", Proc. SPIE 5816, Optical Pattern Recognition XVI, (28 March 2005); doi: 10.1117/12.607966; https://doi.org/10.1117/12.607966

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