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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 25 — Sep. 1, 2006
  • pp: 6560–6567

Discrete cosine transform-based shift estimation for fringe pattern profilometry using a generalized analysis model

Yingsong Hu, Jiangtao Xi, Joe Chicharo, Enbang Li, and Zongkai Yang  »View Author Affiliations

Applied Optics, Vol. 45, Issue 25, pp. 6560-6567 (2006)

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What is believed to be a new analysis algorithm to carry out profile measurement with low computational complexity and less noise sensitivity is presented. First, a discrete cosine transform (DCT)-based representation method is introduced to express the height distribution of a 3D surface. Then a novel shift estimation algorithm, called the DCT-based shift estimation (DCT-SE), is presented to reconstruct 3D object surfaces by using the proposed expression and the generalized analysis model. The advantage of DCT-SE is that without loss of measurement precision it provides lower computational complexity to implement 3D reconstruction from nonlinearly distorted fringe patterns and, at the same time, survives the random noise. Simulations and experiments show that the proposed DCT-SE is a fast, accurate, and efficient reconstruction algorithm for digital projection- based fringe pattern profilometry techniques.

© 2006 Optical Society of America

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(150.6910) Machine vision : Three-dimensional sensing

Original Manuscript: February 13, 2006
Revised Manuscript: March 23, 2006
Manuscript Accepted: April 10, 2006

Yingsong Hu, Jiangtao Xi, Joe Chicharo, Enbang Li, and Zongkai Yang, "Discrete cosine transform-based shift estimation for fringe pattern profilometry using a generalized analysis model," Appl. Opt. 45, 6560-6567 (2006)

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