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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 10 — Apr. 1, 2011
  • pp: 1482–1487

Object-image-based method to construct an unweighted quality map for phase extraction and phase unwrapping

Suping Fang, Leijie Wang, Pengcheng Yang, Lei Meng, and Masaharu Komori  »View Author Affiliations


Applied Optics, Vol. 50, Issue 10, pp. 1482-1487 (2011)
http://dx.doi.org/10.1364/AO.50.001482


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Abstract

A method to construct an unweighted quality map for phase extraction and phase unwrapping is proposed, based on an object image pattern. The object image pattern must be recorded under the same conditions as that of the corresponding interference patterns, except that the lights coming from the reference arm of the interferometer are hidden. An unweighted quality map that can represent the valid and invalid regions in the interference patterns is completed successfully, based on two factors: the fact that the object region in the object image pattern is homologous with the valid region (i.e., the interference region) in the interference patterns, and on distinguishing between the object and background regions in the object image pattern using neighbor window threshold filtering and fitting the boundary of the object image. The application of the proposed method to the real measurement shows its feasibility and correctness. This paper might provide an alternative method for constructing an unweighted quality map for phase extraction and phase unwrapping.

© 2011 Optical Society of America

OCIS Codes
(100.2960) Image processing : Image analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

ToC Category:
Image Processing

History
Original Manuscript: October 27, 2010
Revised Manuscript: February 12, 2011
Manuscript Accepted: February 15, 2011
Published: March 31, 2011

Citation
Suping Fang, Leijie Wang, Pengcheng Yang, Lei Meng, and Masaharu Komori, "Object-image-based method to construct an unweighted quality map for phase extraction and phase unwrapping," Appl. Opt. 50, 1482-1487 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-10-1482


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