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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 20 — Sep. 24, 2012
  • pp: 21905–21916

Anisotropic coupled diffusion filter and binarization for the electronic speckle pattern interferometry fringes

Fang Zhang, Zhitao Xiao, Jun Wu, Lei Geng, Hongqiang Li, Jiangtao Xi, and Jinjiang Wang  »View Author Affiliations


Optics Express, Vol. 20, Issue 20, pp. 21905-21916 (2012)
http://dx.doi.org/10.1364/OE.20.021905


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Abstract

In this paper novel approaches based on anisotropic coupled diffusion equations are presented to do filter and binarization for ESPI fringes. An advantageous characteristic associated with the proposed technique is that diffusion takes place mainly along the direction of the edge. Therefore, the proposed anisotropic coupled diffusion filter method can avoid blur of the fringe edge and protect the useful information of the fringe patterns. The anisotropic coupled diffusion binarization, which can repair the image boundary anisotropically, is able to avoid the redundant burr. More important, it can be directly applied to the noisy ESPI fringe patterns without much preprocessing, which is a significant advance in fringe analysis for ESPI. The effective of the proposed methods are tested by means of the computer-simulated and experimentally obtained fringe patterns, respectively.

© 2012 OSA

OCIS Codes
(110.6150) Imaging systems : Speckle imaging
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: August 2, 2012
Revised Manuscript: August 30, 2012
Manuscript Accepted: August 30, 2012
Published: September 10, 2012

Citation
Fang Zhang, Zhitao Xiao, Jun Wu, Lei Geng, Hongqiang Li, Jiangtao Xi, and Jinjiang Wang, "Anisotropic coupled diffusion filter and binarization for the electronic speckle pattern interferometry fringes," Opt. Express 20, 21905-21916 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-20-21905


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