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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 24, Iss. 12 — Dec. 1, 2007
  • pp: 3735–3740

Fourier transform profilometry based on a projecting-imaging model

Xianfu Mao, Wenjing Chen, Xianyu Su, Guangjie Xu, and Xintian Bian  »View Author Affiliations


JOSA A, Vol. 24, Issue 12, pp. 3735-3740 (2007)
http://dx.doi.org/10.1364/JOSAA.24.003735


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Abstract

In order to obtain the correct height reconstruction of a measured object, a projection lens and a camera lens must be placed at equal heights above the reference plane in the traditional Fourier transform profilometry (FTP) method. We propose an improved phase-height mapping formula based on an improved description of the reference fringe and the deformed fringe in FTP when the projection lens and the camera lens are not placed at equal height. With our method, it is easier to obtain the full-field fringe by moving either the projector or the imaging device. In some cases, where the required parallel condition cannot be met, the proposed method offers a flexible way to calculate the height distribution.

© 2007 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.2830) Instrumentation, measurement, and metrology : Height measurements

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: September 1, 2006
Revised Manuscript: March 29, 2007
Manuscript Accepted: September 24, 2007
Published: November 20, 2007

Citation
Xianfu Mao, Wenjing Chen, Xianyu Su, Guangjie Xu, and Xintian Bian, "Fourier transform profilometry based on a projecting-imaging model," J. Opt. Soc. Am. A 24, 3735-3740 (2007)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-24-12-3735


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