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Proceedings Paper

Application of parallel-aligned nematic liquid crystal spatial-light modulator (PAL-SLM) to optical joint transform correlator
Author(s): Tsutomu Hara; Yuji Kobayashi; Haruyoshi Toyoda; Naohisa Mukohzaka; Narihiro Yoshida; Yasuhiro Igasaki
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Paper Abstract

We have developed a compact joint transform correlator by using the parallel aligned nematic liquid crystal spatial light modulator as a real time hologram device, and have applied the correlator to fingerprint identification. The identification performance was evaluated using 2400 data from 600 fellow workers. The test results showed that the false-reject rate was 0.2 percent with 0.2 percent false acceptance. The response time of the system was less than 0.1 seconds as a result of parallel processing in the optical system.

Paper Details

Date Published: 27 December 1996
PDF: 6 pages
Proc. SPIE 2969, Second International Conference on Optical Information Processing, (27 December 1996); doi: 10.1117/12.262626
Show Author Affiliations
Tsutomu Hara, Hamamatsu Photonics KK (Japan)
Yuji Kobayashi, Hamamatsu Photonics KK (Japan)
Haruyoshi Toyoda, Hamamatsu Photonics KK (Japan)
Naohisa Mukohzaka, Hamamatsu Photonics KK (Japan)
Narihiro Yoshida, Hamamatsu Photonics KK (Japan)
Yasuhiro Igasaki, Hamamatsu Photonics KK (Japan)

Published in SPIE Proceedings Vol. 2969:
Second International Conference on Optical Information Processing
Zhores I. Alferov; Yuri V. Gulyaev; Dennis R. Pape, Editor(s)

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