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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 16 — Jun. 1, 1999
  • pp: 3503–3507

Improvement of Measurement Accuracy in Shadow Moiré by Considering the Influence of Harmonics in the Moiré Profile

Yasuhiko Arai and Shunsuke Yokozeki  »View Author Affiliations


Applied Optics, Vol. 38, Issue 16, pp. 3503-3507 (1999)
http://dx.doi.org/10.1364/AO.38.003503


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Abstract

A method for high-resolution three-dimensional shape measurement for a shadow moiré system is proposed. To increase the resolving power of the method, the problem caused by the harmonics of the moiré profile needs to be solved. It is well known that moiré fringes in a shadow moiré system have a nonsinusoidal profile caused by harmonics. The influence of the harmonics in moiré profile on the measurement accuracy of the method is discussed. The method is improved to eliminate the error caused by the harmonics in the moiré profile. Both simulation and experimental results show that the improved method can effectively reduce the influence of harmonics.

© 1999 Optical Society of America

OCIS Codes
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques
(150.6910) Machine vision : Three-dimensional sensing

Citation
Yasuhiko Arai and Shunsuke Yokozeki, "Improvement of Measurement Accuracy in Shadow Moiré by Considering the Influence of Harmonics in the Moiré Profile," Appl. Opt. 38, 3503-3507 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-16-3503


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