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Proceedings Paper

Effects of nonlinear parameters in feedback joint transform correlator (I)
Author(s): Nobuyuki Kasama; Yasuyuki Mitsuoka; Tadao Iwaki; Shuhei Yamamoto
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Paper Abstract

We report that nonlinear parameters effect the characteristics of the optical pattern recognition of a feedback joint transform correlator (FJTC) which is based on a joint transform correlator (JTC). This system incorporates the optically addressed ferroelectric liquid crystal spatial light modulator named LAPS-SLM. Nonlinear parameters in the FJTC are a threshold level of the LAPS-SLM to record the binary joint power spectrum (JPS), and a feedback transfer function from the correlation plane to the input plane. It is important to control the threshold level of the binary JPS. But the FJTC does not always need the optimum condition where the FJTC recognizes the signal image correctly at the initial recognition.

Paper Details

Date Published: 12 January 1993
PDF: 12 pages
Proc. SPIE 1772, Optical Information Processing Systems and Architectures IV, (12 January 1993); doi: 10.1117/12.140932
Show Author Affiliations
Nobuyuki Kasama, Seiko Instruments Inc. (Japan)
Yasuyuki Mitsuoka, Seiko Instruments Inc. (Japan)
Tadao Iwaki, Seiko Instruments Inc. (Japan)
Shuhei Yamamoto, Seiko Instruments Inc. (Japan)


Published in SPIE Proceedings Vol. 1772:
Optical Information Processing Systems and Architectures IV
Bahram Javidi, Editor(s)

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