Abstract

Joint transform correlator (JTC) has been the most suitable technique for real time pattern recognition. This paper proposes a new phase adjustment which adopts two steps of random phase adjustment in the spatial domain and additional phase adjustment in the Fourier domain. Simulated results are presented to show the optimum condition of the phase adjustment and the effect on the correlation peaks, the peak signal-to-noise ratio and the level of discrimination.

© 2010 Optical Society of Korea

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2010

2009

2004

1998

H. E. Michel and A. A. S. Awwal, “Joint Fourier transform correlation with phase thresholding in the Fourier domain,” Opt. Eng. 37, 33-37 (1998).
[CrossRef]

1997

1995

1991

M. S. Alam, A. A. S. Awwal, and M. A. Karim, “Improved correlation discrimination using joint Fourier transform optical correlator,” Microwave Opt. Technol. Lett. 4, 103-106 (1991).
[CrossRef]

B. Javidi and J. Wang, “Binary nonlinear joint transform correlation with median and sub-set median thresholding,” Appl. Opt. 30, 967-976 (1991).
[CrossRef]

1988

1984

1966

Appl. Opt.

J. Opt. Soc. Korea

Microwave Opt. Technol. Lett.

M. S. Alam, A. A. S. Awwal, and M. A. Karim, “Improved correlation discrimination using joint Fourier transform optical correlator,” Microwave Opt. Technol. Lett. 4, 103-106 (1991).
[CrossRef]

Opt. Eng.

H. E. Michel and A. A. S. Awwal, “Joint Fourier transform correlation with phase thresholding in the Fourier domain,” Opt. Eng. 37, 33-37 (1998).
[CrossRef]

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