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Real-Time Shape Measurement by Unwrapping Method Using Aliasing

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Abstract:

We previously proposed a real-time shape measurement method using two-component synthesis grating projection. In the method, phase unwrapping of the projected grating is performed by using aliasing of the Fourier spectrum of the grating images. It requires only 5 images obtained for one-cycle phase-shifting. Each phase in the two-component can be extracted from only 5 phase-shifted grating images. In this paper, we propose a real-time shape measurement system. The theory, the algorithm for the analysis and the experimental results are shown.

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Periodical:

Key Engineering Materials (Volumes 326-328)

Pages:

31-34

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.326-328.31

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Cite this paper

Online since:

December 2006

Authors:

Motoharu Fujigaki, Toshio Toyotake, Toru Matui, Yoshiharu Morimoto

Keywords:

Aliasing, Fourier Transform, Grating Projection, Phase Unwrapping, Real-Time, Shape Measurement

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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References

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