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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 3 — Feb. 10, 2014
  • pp: 2695–2705

Spatial quasi-phase-shifting technique for single-frame dynamic fringe analysis

Zibang Zhang and Jingang Zhong  »View Author Affiliations


Optics Express, Vol. 22, Issue 3, pp. 2695-2705 (2014)
http://dx.doi.org/10.1364/OE.22.002695


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Abstract

Phase demodulation from carrier-frequency fringe patterns is the core of many optic measurements. We propose spatial quasi-phase-shifting technique by expressing the fringe signal in the frequency-modulated form, which requires only one frame fringe pattern for instantaneous and dynamic measurements. In an area smaller than a fringe period, there substantially exists an approximately constant phase shift between spatially adjacent sample points. The technique is capable of demodulating the phase with such intra-frame phase shifts, which makes the instantaneous and dynamic measurement possible. The technique implements demodulation within three spatially adjacent neighbors, achieving spatial localization as good as a several-point level. Both numerical simulation and experiment are presented to verify its performance.

© 2014 Optical Society of America

OCIS Codes
(100.5070) Image processing : Phase retrieval
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: November 14, 2013
Revised Manuscript: January 21, 2014
Manuscript Accepted: January 23, 2014
Published: January 30, 2014

Citation
Zibang Zhang and Jingang Zhong, "Spatial quasi-phase-shifting technique for single-frame dynamic fringe analysis," Opt. Express 22, 2695-2705 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-3-2695


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