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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 10 — Apr. 1, 2006
  • pp: 2287–2294

Contrast enhancement for electronic speckle pattern interferometry fringes by the differential equation enhancement method

Chen Tang, Fang Zhang, and Zhanqing Chen  »View Author Affiliations


Applied Optics, Vol. 45, Issue 10, pp. 2287-2294 (2006)
http://dx.doi.org/10.1364/AO.45.002287


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Abstract

Electronic speckle pattern interferometry fringe patterns usually have poor contrast so it is important to enhance fringe contrast for the extraction of phase from a single fringe pattern. We present new enhancement methods based on differential equations (called DE enhancement methods) to electronic speckle pattern interferometry fringes. The DE enhancement methods transform the image processing to solve differential equations. With the proposed methods, the visibility of the correlation speckle fringe patterns can be improved significantly. We tested the proposed methods on computer-simulated speckle correlation fringes and experimentally obtained fringes, and we compared the new method with other contrast enhancement techniques. The experimental results illustrate the performance of this approach.

© 2006 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(110.6150) Imaging systems : Speckle imaging

ToC Category:
Coherence and Statistical Optics

History
Original Manuscript: June 10, 2005
Revised Manuscript: June 10, 2005
Manuscript Accepted: September 20, 2005

Citation
Chen Tang, Fang Zhang, and Zhanqing Chen, "Contrast enhancement for electronic speckle pattern interferometry fringes by the differential equation enhancement method," Appl. Opt. 45, 2287-2294 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-10-2287


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