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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 8 — Apr. 15, 2009
  • pp: 1210–1212

Wavefront reconstruction and three-dimensional shape measurement by two-step dc-term-suppressed phase-shifted intensities

X. F. Meng, X. Peng, L. Z. Cai, A. M. Li, J. P. Guo, and Y. R. Wang  »View Author Affiliations


Optics Letters, Vol. 34, Issue 8, pp. 1210-1212 (2009)
http://dx.doi.org/10.1364/OL.34.001210


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Abstract

A wavefront reconstruction and three-dimensional (3-D) shape measurement method by a two-step phase-shifting algorithm with arbitrary phase shift in ( 0 , π ) is proposed. In this method, only two phase-shifted intensities, with the removal of the dc term by an averaging technique in spatial domain or low-pass filter operation in the frequency domain, are needed, and the other additional measurements are no longer required. The simulation for an irregular wavefront has shown the feasibility, and the optical experiment for a 3-D face mask in the case of a sinusoidal fringe projection system has illustrated the validity of the proposed method.

© 2009 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(100.3010) Image processing : Image reconstruction techniques
(100.5070) Image processing : Phase retrieval
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis

ToC Category:
Image Processing

History
Original Manuscript: January 5, 2009
Revised Manuscript: March 9, 2009
Manuscript Accepted: March 11, 2009
Published: April 8, 2009

Citation
X. F. Meng, X. Peng, L. Z. Cai, A. M. Li, J. P. Guo, and Y. R. Wang, "Wavefront reconstruction and three-dimensional shape measurement by two-step dc-term-suppressed phase-shifted intensities," Opt. Lett. 34, 1210-1212 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-8-1210

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