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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 20 — Jul. 10, 2008
  • pp: 3590–3608

Shape connection by pattern recognition and laser metrology

J. Apolinar Muñoz-Rodríguez  »View Author Affiliations


Applied Optics, Vol. 47, Issue 20, pp. 3590-3608 (2008)
http://dx.doi.org/10.1364/AO.47.003590


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Abstract

Shape connection based on the pattern recognition of three-dimensional shapes is presented. In this technique, the object shape is reconstructed by laser scanning and image processing. The object is reconstructed from multiple views when an object occlusion appears. From this process, multiple parts of the object are reconstructed. Then, these parts are assembled to obtain the complete object shape. To perform the assembling, a matching procedure is applied to a transverse section of the multiple views by Hu moments. The depth of the transverse section is computed by an approximation network based on the behavior of the laser line and the camera position. Also, vision parameters are deduced by the network and image processing. In this manner, the shape connection is achieved automatically by computational algorithms. Therefore, errors of physical measurement are not passed to the reconstruction system. Thus, the performance and the accuracy of the reconstruction system are improved. This is elucidated by the comparison between the obtained results by the proposed technique and the obtained results by a contact method. Thus, a contribution in laser metrology for shape connection is achieved.

© 2008 Optical Society of America

OCIS Codes
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(150.6910) Machine vision : Three-dimensional sensing
(150.3045) Machine vision : Industrial optical metrology
(100.4996) Image processing : Pattern recognition, neural networks

ToC Category:
Image Processing

History
Original Manuscript: January 3, 2008
Revised Manuscript: May 5, 2008
Manuscript Accepted: May 23, 2008
Published: July 3, 2008

Virtual Issues
Vol. 3, Iss. 8 Virtual Journal for Biomedical Optics

Citation
J. Apolinar Muñoz-Rodríguez, "Shape connection by pattern recognition and laser metrology," Appl. Opt. 47, 3590-3608 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-20-3590

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