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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 25 — Dec. 16, 2013
  • pp: 30610–30622

New approach to improve the accuracy of 3-D shape measurement of moving object using phase shifting profilometry

Lei Lu, Jiangtao Xi, Yanguang Yu, and Qinghua Guo  »View Author Affiliations


Optics Express, Vol. 21, Issue 25, pp. 30610-30622 (2013)
http://dx.doi.org/10.1364/OE.21.030610


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Abstract

When phase shifting profilometry (PSP) is employed for 3-D shape measurement, the object must be kept static during the projection and acquisition of the multiple fringe patterns. Errors will occur when the object moves and if the projection and capture of fringe patterns are not fast enough. In this paper, a new approach is proposed to tackle the problem, consisting of two steps. Firstly, the rotation matrix and translation vector describing the movement of the object are estimated using a set of marks placing on the surface of the object. Then the expressions of the fringe patterns under the influence of 2-D object movement are derived, which are employed to determine the correct phase map, leading to accurate measurement of the profile. Simulations and experiments are presented to verify the effectiveness of the proposed algorithm.

© 2013 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(100.2650) Image processing : 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: September 12, 2013
Revised Manuscript: October 31, 2013
Manuscript Accepted: December 1, 2013
Published: December 5, 2013

Citation
Lei Lu, Jiangtao Xi, Yanguang Yu, and Qinghua Guo, "New approach to improve the accuracy of 3-D shape measurement of moving object using phase shifting profilometry," Opt. Express 21, 30610-30622 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-25-30610


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