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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 15 — May. 20, 2004
  • pp: 3018–3027

Spatiotemporal approach for real-time absolute shape measurements by use of projected fringes

Lars Kinell  »View Author Affiliations


Applied Optics, Vol. 43, Issue 15, pp. 3018-3027 (2004)
http://dx.doi.org/10.1364/AO.43.003018


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Abstract

A spatiotemporal approach for fast absolute shape measurements is formulated. In principle, the Takeda method is used in combination with the reduced temporal phase-unwrapping scheme to calculate the absolute phase. Three different measurements are performed: a flat surface, steps, and a curved beam with varying cross sections. The performance in standard deviation is improved, and the success rate is approximately the same as that obtained with a strict temporal solution for which a four-bucket phase algorithm is used. The multichannel approach is also used. Then only one static image is needed. It should therefore be possible to measure objects in motion.

© 2004 Optical Society of America

OCIS Codes
(100.0100) Image processing : Image processing
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(150.0150) Machine vision : Machine vision
(150.6910) Machine vision : Three-dimensional sensing

History
Original Manuscript: September 5, 2003
Revised Manuscript: January 20, 2004
Published: May 20, 2004

Citation
Lars Kinell, "Spatiotemporal approach for real-time absolute shape measurements by use of projected fringes," Appl. Opt. 43, 3018-3027 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-15-3018


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References

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