Phase-error analysis and elimination for nonsinusoidal waveforms in Hilbert transform digital-fringe projection profilometry
Optics Letters, Vol. 34, Issue 15, pp. 2363-2365 (2009)
http://dx.doi.org/10.1364/OL.34.002363
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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, which results in phase error and therefore measurement error. The theoretical analysis of the phase error due to the nonsinusoidal waveforms in Hilbert transform FPP is performed. Based on the derived phase-error expression, a cubic spline-smoothing method is proposed to eliminate the nonsinusoidal phase error. Experiments show that the proposed algorithm can be used for effective phase-error elimination in practical Hilbert transform 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
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: May 11, 2009
Revised Manuscript: June 27, 2009
Manuscript Accepted: July 12, 2009
Published: July 30, 2009
Citation
Liudong Xiong and Shuhai Jia, "Phase-error analysis and elimination for nonsinusoidal waveforms in Hilbert transform digital-fringe projection profilometry," Opt. Lett. 34, 2363-2365 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-15-2363
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