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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 20 — Oct. 4, 2004
  • pp: 4980–4985

Single-phase-step method with contoured correlation fringe patterns for ESPI

Qifeng Yu, Sihua Fu, Xiaolin Liu, Xia Yang, and Xiangyi Sun  »View Author Affiliations

Optics Express, Vol. 12, Issue 20, pp. 4980-4985 (2004)

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Speckle fringe patterns of electronic speckle pattern interferometry (ESPI) are full of high-level speckle noise and are mainly processed by phase-shifting methods that normally require three speckle fringe patterns or more. The author proposes a novel method, the contoured correlation-fringe-pattern (CCFP) method, by which speckle-noise-free fringe patterns can be generated for ESPI. The application of this novel method is extended to the phase-shifting or phase-stepping for ESPI after its improvement. It generates speckle-noise-free phase fringes and remains valid for single phase-step condition, thus eliminates the two main disadvantages of the phase-shifting (stepping) methods of ESPI.

© 2004 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry

ToC Category:
Research Papers

Original Manuscript: August 23, 2004
Revised Manuscript: September 27, 2004
Published: October 4, 2004

Qifeng Yu, Sihua Fu, Xiaolin Liu, Xia Yang, and Xiangyi Sun, "Single-phase-step method with contoured correlation fringe patterns for ESPI," Opt. Express 12, 4980-4985 (2004)

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