Effects of nonlinear parameters in feedback joint transform correlator (I)

Nobuyuki Kasama; Yasuyuki Mitsuoka; Tadao Iwaki; Shuhei Yamamoto

doi:10.1117/12.140932

12 January 1993 Effects of nonlinear parameters in feedback joint transform correlator (I)

Nobuyuki Kasama, Yasuyuki Mitsuoka, Tadao Iwaki, Shuhei Yamamoto

Proceedings Volume 1772, Optical Information Processing Systems and Architectures IV; (1993) https://doi.org/10.1117/12.140932
Event: San Diego '92, 1992, San Diego, CA, United States

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.

Citation Download Citation

Nobuyuki Kasama, Yasuyuki Mitsuoka, Tadao Iwaki, and Shuhei Yamamoto "Effects of nonlinear parameters in feedback joint transform correlator (I)", Proc. SPIE 1772, Optical Information Processing Systems and Architectures IV, (12 January 1993); https://doi.org/10.1117/12.140932

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