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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 26 — Sep. 10, 2003
  • pp: 5290–5301

Hybrid nonlinear joint transform correlator that operates at a high frame rate

Taketsugu Yao and Takumi Minemoto  »View Author Affiliations


Applied Optics, Vol. 42, Issue 26, pp. 5290-5301 (2003)
http://dx.doi.org/10.1364/AO.42.005290


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Abstract

A joint transform correlator has been constructed by a spatial light modulator that uses the electroabsorption effect of GaAs crystal and operates at a high frame rate a TV camera with logarithmic response and a personal computer. In the system, logarithmic values of joint power spectra generated in an optical system were electrically digitized and inverse-Fourier transformed. The system has accomplished the operation of correlation with a throughput time smaller than 10 ms per an input image.

© 2003 Optical Society of America

OCIS Codes
(100.1160) Image processing : Analog optical image processing
(100.2000) Image processing : Digital image processing
(100.4550) Image processing : Correlators
(100.5010) Image processing : Pattern recognition
(230.6120) Optical devices : Spatial light modulators

History
Original Manuscript: December 25, 2002
Revised Manuscript: May 26, 2003
Published: September 10, 2003

Citation
Taketsugu Yao and Takumi Minemoto, "Hybrid nonlinear joint transform correlator that operates at a high frame rate," Appl. Opt. 42, 5290-5301 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-26-5290

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