3-D Shape Measurement Based on Optic Interferometric Projection

Jiang Hong Gan; Li Ping Zhou; Liang Zhou Chen; Long Xu

doi:10.4028/www.scientific.net/AMR.139-141.1981

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 139-1413-D Shape Measurement Based on Optic...

3-D Shape Measurement Based on Optic Interferometric Projection

Abstract:

This paper aimed to use a novel optic interferometric fringe projection to measure the three-dimensional shape of small object with high resolution. In this method, the projecting fringe pattern, which has a sinusoidal density distribution, good contrast and equal spacing, is generated by a spherical wave incident into a triangle-section prism. Project the fringe onto the subject under test, the image of the deformed fringe pattern modulated by object surface is captured by a high-speed CMOS camera and processed by the Fourier Transform technique to extract the phase distribution which is related to height information. An experimental system is set to conduct 3-D shape measurement and the result shows the validity of the proposed method. The projecting system is simple and compact, which helps to realize the integration and miniaturization of the system.

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Periodical:

Advanced Materials Research (Volumes 139-141)

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1981-1984

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.139-141.1981

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October 2010

Authors:

Jiang Hong Gan, Li Ping Zhou, Liang Zhou Chen, Long Xu

Keywords:

Fourier Transform, Fringe Projection, Optical Interferometry, Shape Measurement, Triangle-Section Prism

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