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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 19 — Sep. 17, 2007
  • pp: 12318–12330

3-D shape measurement by composite pattern projection and hybrid processing

H. J. Chen, J. Zhang, D. J. Lv, and J. Fang  »View Author Affiliations


Optics Express, Vol. 15, Issue 19, pp. 12318-12330 (2007)
http://dx.doi.org/10.1364/OE.15.012318


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Abstract

This article presents a projection system with a novel composite pattern for one-shot acquisition of 3D surface shape. The pattern is composed of color encoded stripes and cosinoidal intensity fringes, with parallel arrangement. The stripe edges offer absolute height phases with high accuracy, and the cosinoidal fringes provide abundant relative phases involved in the intensity distribution. Wavelet transform is utilized to obtain the relative phase distribution of the fringe pattern, and the absolute height phases measured by triangulation are combined to calibrate the phase data in unwrapping, so as to eliminate the initial and noise errors and to reduce the accumulation and approximation errors. Numerical simulations are performed to prove the new unwrapping algorithms and actual experiments are carried out to show the validity of the proposed technique for accurate 3-D shape measurement.

© 2007 Optical Society of America

OCIS Codes
(110.6880) Imaging systems : Three-dimensional image acquisition
(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: August 9, 2007
Revised Manuscript: September 10, 2007
Manuscript Accepted: September 11, 2007
Published: September 13, 2007

Citation
H. J. Chen, J. Zhang, D. J. Lv, and J. Fang, "3-D shape measurement by composite pattern projection and hybrid processing," Opt. Express 15, 12318-12330 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-19-12318


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