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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 10 — Apr. 1, 2010
  • pp: 1789–1801

Three-dimensional measurement of small mechanical parts under a complicated background based on stereo vision

Zhiguo Ren, Jiarui Liao, and Lilong Cai  »View Author Affiliations


Applied Optics, Vol. 49, Issue 10, pp. 1789-1801 (2010)
http://dx.doi.org/10.1364/AO.49.001789


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Abstract

We present an effective method for the accurate three-dimensional (3D) measurement of small industrial parts under a complicated noisy background, based on stereo vision. To effectively extract the nonlinear features of desired curves of the measured parts in the images, a strategy from coarse to fine extraction is employed, based on a virtual motion control system. By using the multiscale decomposition of gray images and virtual beam chains, the nonlinear features can be accurately extracted. By analyzing the generation of geometric errors, the refined feature points of the desired curves are extracted. Then the 3D structure of the measured parts can be accurately reconstructed and measured with least squares errors. Experimental results show that the presented method can accurately measure industrial parts that are represented by various line segments and curves.

© 2010 Optical Society of America

OCIS Codes
(100.0100) Image processing : Image processing
(100.6890) Image processing : Three-dimensional image processing
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(150.0150) Machine vision : Machine vision
(150.3040) Machine vision : Industrial inspection
(110.7410) Imaging systems : Wavelets

ToC Category:
Image Processing

History
Original Manuscript: December 22, 2009
Revised Manuscript: February 26, 2010
Manuscript Accepted: February 28, 2010
Published: March 25, 2010

Citation
Zhiguo Ren, Jiarui Liao, and Lilong Cai, "Three-dimensional measurement of small mechanical parts under a complicated background based on stereo vision," Appl. Opt. 49, 1789-1801 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-10-1789

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