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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 23 — Aug. 10, 2005
  • pp: 4909–4915

Pseudophase information from the complex analytic signal of speckle fields and its applications. Part I: Microdisplacement observation based on phase-only correlation in the signal domain

Wei Wang, Nobuo Ishii, Steen G. Hanson, Yoko Miyamoto, and Mitsuo Takeda  »View Author Affiliations


Applied Optics, Vol. 44, Issue 23, pp. 4909-4915 (2005)
http://dx.doi.org/10.1364/AO.44.004909


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Abstract

As an alternative to the intensity correlation used in conventional speckle metrology, we propose a new technique for displacement observation that is based on spatial-signal-domain phase-only correlation and that makes use of the pseudophase of the complex analytic signal generated from a Hilbert-filtered speckle pattern. Experimental results are presented that demonstrate the validity and the advantage of the proposed signal-domain phase-only correlation technique over both the conventional intensity correlation technique and the spatial-frequency-domain phase-only correlation technique.

© 2005 Optical Society of America

OCIS Codes
(070.4550) Fourier optics and signal processing : Correlators
(100.4550) Image processing : Correlators
(100.5070) Image processing : Phase retrieval
(120.6150) Instrumentation, measurement, and metrology : Speckle imaging

History
Original Manuscript: November 29, 2004
Revised Manuscript: April 10, 2005
Manuscript Accepted: May 3, 2005
Published: August 10, 2005

Citation
Wei Wang, Nobuo Ishii, Steen G. Hanson, Yoko Miyamoto, and Mitsuo Takeda, "Pseudophase information from the complex analytic signal of speckle fields and its applications. Part I: Microdisplacement observation based on phase-only correlation in the signal domain," Appl. Opt. 44, 4909-4915 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-23-4909


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References

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