Linear sinusoidal phase-shifting method resistant to non-sinusoidal phase error
Chinese Optics Letters, Vol. 10, Issue 3, pp. 031201- (2012)
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Abstract
Non-sinusoidal phase error is common in structured light three-dimensional (3D) shape measurement system, thus we perform theoretical and experimental analyses of such error. The number of non-sinusoidal waveform errors in a 2π phase period is the same as the number of steps of the phase-shifting algorithm; no errors occur within the one-phase period. Based on our findings, a new structured light method, the linear sinusoidal phase-shifting method (LSPS), that is resistant to non-sinusoidal phase error is proposed. Experiments show that the non-sinusoidal waveform error is reduced to an almost negligible level (0.001 rad) using the proposed LSPS.
© 2012 Chinese Optics Letters
OCIS Codes
(100.0100) Image processing : Image processing
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(150.0150) Machine vision : Machine vision
ToC Category:
Instrumentation, Measurement, and Metrology
Citation
Haihua Cui, Wenhe Liao, Ning Dai, and Xiaosheng Cheng, "Linear sinusoidal phase-shifting method resistant to non-sinusoidal phase
error," Chin. Opt. Lett. 10, 031201- (2012)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-10-3-031201
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