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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 18 — Sep. 9, 2013
  • pp: 21119–21130

Absolute phase measurement in fringe projection using multiple perspectives

Y. R. Huddart, J. D. R. Valera, N. J. Weston, and A. J. Moore  »View Author Affiliations

Optics Express, Vol. 21, Issue 18, pp. 21119-21130 (2013)

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A technique for absolute phase measurement in fringe projection for shape measurement is presented. A standard fringe projection system is used, comprising a camera and a projector fixed relative to each other. The test object is moved to different orientations relative to the fringe projection system. Using the system calibration parameters, the technique identifies homologous surface areas imaged from different perspectives and resolves the 2π phase ambiguity between them simultaneously. The technique is also used to identify regions of the phase maps corresponding to discrete surfaces on the object. The methods described are suitable for automatic shape measurement with a lightweight fringe projection probe mounted to a coordinate measuring machine.

© 2013 OSA

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(150.3040) Machine vision : Industrial inspection
(110.2650) Imaging systems : Fringe analysis

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: June 5, 2013
Revised Manuscript: August 13, 2013
Manuscript Accepted: August 20, 2013
Published: September 3, 2013

Y. R. Huddart, J. D. R. Valera, N. J. Weston, and A. J. Moore, "Absolute phase measurement in fringe projection using multiple perspectives," Opt. Express 21, 21119-21130 (2013)

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