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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 16 — Jul. 30, 2012
  • pp: 18459–18477

Phase demodulation using adaptive windowed Fourier transform based on Hilbert-Huang transform

Chenxing Wang and Feipeng Da  »View Author Affiliations


Optics Express, Vol. 20, Issue 16, pp. 18459-18477 (2012)
http://dx.doi.org/10.1364/OE.20.018459


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Abstract

The phase demodulation method of adaptive windowed Fourier transform (AWFT) is proposed based on Hilbert-Huang transform (HHT). HHT is analyzed and performed on fringe pattern to obtain instantaneous frequencies firstly. These instantaneous frequencies are further analyzed based on the condition of AWFT to locate local stationary areas where the fundamental spectrum will not be interfered by high-order spectrum. Within each local stationary area, the fundamental spectrum can be extracted accurately and adaptively by using AWFT with the background, which has been determined previously with the presented criterion during HHT, being eliminated to remove the zero-spectrum. This method is adaptive and unconstrained by any precondition for the measured phase. Experiments demonstrate its robustness and effectiveness for measuring the object with discontinuities or complex surface.

© 2012 OSA

OCIS Codes
(100.5070) Image processing : Phase retrieval
(110.2960) Imaging systems : Image analysis
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis

ToC Category:
Image Processing

History
Original Manuscript: May 30, 2012
Revised Manuscript: July 18, 2012
Manuscript Accepted: July 19, 2012
Published: July 27, 2012

Citation
Chenxing Wang and Feipeng Da, "Phase demodulation using adaptive windowed Fourier transform based on Hilbert-Huang transform," Opt. Express 20, 18459-18477 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-16-18459


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