Single-phase-step method with contoured correlation fringe patterns for ESPI
Optics Express, Vol. 12, Issue 20, pp. 4980-4985 (2004)
http://dx.doi.org/10.1364/OPEX.12.004980
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Abstract
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
History
Original Manuscript: August 23, 2004
Revised Manuscript: September 27, 2004
Published: October 4, 2004
Citation
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)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-20-4980
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