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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 18 — Jun. 20, 2014
  • pp: 4049–4060

Enhanced phase unwrapping algorithm based on unscented Kalman filter, enhanced phase gradient estimator, and path-following strategy

XianMing Xie and YingHui Li  »View Author Affiliations

Applied Optics, Vol. 53, Issue 18, pp. 4049-4060 (2014)

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This paper presents an enhanced phase unwrapping algorithm by combining an unscented Kalman filter, an enhanced local phase gradient estimator based on an amended matrix pencil model, and a path-following strategy. This technology is able to accurately unwrap seriously noisy wrapped phase images by applying the unscented Kalman filter to simultaneously perform noise suppression and phase unwrapping along the path from the high-quality region to the low-quality region of the wrapped phase images. Results obtained with synthetic data and real data validate the effectiveness of the proposed method and show improved performance of this new algorithm with respect to some of the most used algorithms.

© 2014 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry
(100.3175) Image processing : Interferometric imaging
(100.5088) Image processing : Phase unwrapping

ToC Category:
Image Processing

Original Manuscript: February 25, 2014
Revised Manuscript: May 19, 2014
Manuscript Accepted: May 20, 2014
Published: June 19, 2014

XianMing Xie and YingHui Li, "Enhanced phase unwrapping algorithm based on unscented Kalman filter, enhanced phase gradient estimator, and path-following strategy," Appl. Opt. 53, 4049-4060 (2014)

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