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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: Franco Gori
  • Vol. 28, Iss. 2 — Feb. 1, 2011
  • pp: 214–221

Clustering-driven residue filter for profile measurement system

Jun Jiang, Jun Cheng, Ying Zhou, and Guang Chen  »View Author Affiliations


JOSA A, Vol. 28, Issue 2, pp. 214-221 (2011)
http://dx.doi.org/10.1364/JOSAA.28.000214


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Abstract

The profile measurement system is widely used in industrial quality control, and phase unwrapping (PU) is a key technique. An algorithm-driven PU is often used to reduce the impact of noise-induced residues to retrieve the most reliable solution. However, measuring speed is lowered due to the searching of optimal integration paths or correcting of phase gradients. From the viewpoint of the rapidity of the system, this paper characterizes the noise-induced residues, and it proposes a clustering-driven residue filter based on a set of directional windows. The proposed procedure makes the wrapped phases included in the filtering window have more similar values, and it groups the correct and noisy phases into individual clusters along the local fringe direction adaptively. It is effective for the tightly packed fringes, and it converts the algorithm-driven PU to the residue-filtering-driven one. This improves the operating speed of the 3D reconstruction significantly. The tests performed on simulated and real projected fringes confirm the validity of our approach.

© 2011 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(150.6910) Machine vision : Three-dimensional sensing
(150.3045) Machine vision : Industrial optical metrology
(100.4997) Image processing : Pattern recognition, nonlinear spatial filters

ToC Category:
Image Processing

History
Original Manuscript: September 28, 2010
Manuscript Accepted: December 2, 2010
Published: January 26, 2011

Virtual Issues
February 18, 2011 Spotlight on Optics

Citation
Jun Jiang, Jun Cheng, Ying Zhou, and Guang Chen, "Clustering-driven residue filter for profile measurement system," J. Opt. Soc. Am. A 28, 214-221 (2011)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-28-2-214


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