Joint transform correlator using a 4-F lens system to achieve vi

Details Joint transform correlator using a 4-F lens system to achieve vi Joint transform correlator using a 4-F lens system to achieve vi

1993-06-25

1995-08-01

Mancuso, Joseph

Image analysis

Image transformation or preprocessing

Correlation

359561, 382280, G06F 15336, G06K 964

Patent

active

054386322

ABSTRACT:
A 4-f lens system is positioned over one half of the joint input image presentation SLM device of a conventional joint transform correlator (JTC). An image displacement lens is positioned in the Fourier transform plane of the 4-f correlator and can shift the virtual displacement of the reference image plane relative to the input image plane. By the appropriate choice of this lens, any virtual displacement can be achieved to provide for substantial design flexibility of the JTC.

REFERENCES:
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patent: 4723125 (1988-02-01), Elleaume
patent: 4826285 (1989-05-01), Horner
patent: 4831598 (1989-05-01), Koike et al.
patent: 4832447 (1989-05-01), Javidi
patent: 4922256 (1990-05-01), Brandstetter
patent: 5073066 (1991-12-01), Horner et al.
Tang and Javidi, "Technique for reducing the redundant and self-correlation terms in joint transform correlators", Applied Optics, 10 Apr. 1993, vol. 32, No. 11, pp. 1911-1918.

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