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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 7 — Apr. 7, 2014
  • pp: 8703–8711

Simultaneous measurement of in-plane and out-of-plane displacements using pseudo-Wigner-Hough transform

Rishikesh Kulkarni and Pramod Rastogi  »View Author Affiliations

Optics Express, Vol. 22, Issue 7, pp. 8703-8711 (2014)

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A new method based on pseudo-Wigner-Hough transform is proposed for the simultaneous measurement of the in-plane and out-of-plane displacements using digital holographic moiré. Multiple interference phases corresponding to the in-plane and out-of-plane displacement components are retrieved from a single moiré fringe pattern. The segmentation of the interference field allows us to approximate it with a multicomponent linear frequency modulated signal. The proposed method accurately and simultaneously estimates all the phase parameters of the signal components without the use of any signal separation techniques. Simulation and experimental results demonstrate the efficacy of the proposed method and its robustness against the variations in object beam intensity.

© 2014 Optical Society of America

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.2880) Instrumentation, measurement, and metrology : Holographic interferometry
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: February 13, 2014
Revised Manuscript: March 18, 2014
Manuscript Accepted: March 26, 2014
Published: April 3, 2014

Rishikesh Kulkarni and Pramod Rastogi, "Simultaneous measurement of in-plane and out-of-plane displacements using pseudo-Wigner-Hough transform," Opt. Express 22, 8703-8711 (2014)

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