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Applied Optics

Applied Optics


  • Vol. 37, Iss. 26 — Sep. 10, 1998
  • pp: 6256–6261

Rotation-invariant and controllable space-variant optical correlation

Yan Zhang and Ben-Yuan Gu  »View Author Affiliations

Applied Optics, Vol. 37, Issue 26, pp. 6256-6261 (1998)

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We propose a method for designing a correlator for achieving rotation-invariant and controllable space-variant optical correlation. The design concept is based on a combination of fractional correlation and circular-harmonic decomposition of the reference object. The suggested method is described and analyzed in detail. Numerical simulations show that this new correlator might provide potential applications in practice.

© 1998 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.2590) Fourier optics and signal processing : ABCD transforms
(070.4550) Fourier optics and signal processing : Correlators
(070.5010) Fourier optics and signal processing : Pattern recognition

Original Manuscript: January 5, 1998
Revised Manuscript: April 29, 1998
Published: September 10, 1998

Yan Zhang and Ben-Yuan Gu, "Rotation-invariant and controllable space-variant optical correlation," Appl. Opt. 37, 6256-6261 (1998)

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