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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 10 — Apr. 1, 2010
  • pp: B104–B110

Spatially efficient reference phase-encrypted joint transform correlator

AbdulRahman Alsamman  »View Author Affiliations


Applied Optics, Vol. 49, Issue 10, pp. B104-B110 (2010)
http://dx.doi.org/10.1364/AO.49.00B104


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Abstract

A novel joint transform correlator (JTC) system is presented in which the stored reference image is phase encrypted prior to applying the JTC. The encryption disperses all the trivial correlation peaks in the correlator output. The reference image is encrypted electronically, which simplifies the need for a complex optical setup. The encryption removes the JTC requirement for spatial separation between the reference and the target images in the joint input plane. This efficient use of spatial light modulator space can be used to phase multiplex more reference images so that correlations with multiple reference images can be performed in a single JTC cycle.

© 2010 Optical Society of America

OCIS Codes
(070.4550) Fourier optics and signal processing : Correlators
(070.5010) Fourier optics and signal processing : Pattern recognition

History
Original Manuscript: October 6, 2009
Revised Manuscript: February 1, 2010
Manuscript Accepted: March 9, 2010
Published: March 31, 2010

Citation
AbdulRahman Alsamman, "Spatially efficient reference phase-encrypted joint transform correlator," Appl. Opt. 49, B104-B110 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-10-B104

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