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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 4 — Feb. 15, 2009
  • pp: 416–418

Phase error analysis and compensation for nonsinusoidal waveforms in phase-shifting digital fringe projection profilometry

Bing Pan, Qian Kemao, Lei Huang, and Anand Asundi  »View Author Affiliations


Optics Letters, Vol. 34, Issue 4, pp. 416-418 (2009)
http://dx.doi.org/10.1364/OL.34.000416


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Abstract

The nonlinear intensity response of a digital fringe projection profilometry (FPP) system causes the captured fringe patterns to be nonsinusoidal waveforms and leads to an additional phase measurement error for commonly used three- and four-step phase-shifting algorithms. We perform theoretical analysis of the phase error owing to the nonsinusoidal waveforms. Based on the derived theoretical model, a novel and simple iterative phase compensation algorithm is proposed to compensate the nonsinusoidal phase error. Experiments show that the proposed algorithm can be used for effective phase error compensation in practical phase-shifting FPP.

© 2009 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.2830) Instrumentation, measurement, and metrology : Height measurements
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: November 12, 2008
Revised Manuscript: December 6, 2008
Manuscript Accepted: December 10, 2008
Published: February 5, 2009

Citation
Bing Pan, Qian Kemao, Lei Huang, and Anand Asundi, "Phase error analysis and compensation for nonsinusoidal waveforms in phase-shifting digital fringe projection profilometry," Opt. Lett. 34, 416-418 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-4-416

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