高速动态三维面形测量

doi:10.3969/j.issn.0255-8297.2018.06.006

Abstract

Abstract: Aiming at the 3D surface measurement of the fast changing object of which surface satisfes the continuity assumptions, a method that wrapped phase demodulating based on two-dimensional wavelet transform and phase unwrapping based on least square method is proposed. Its advantage is that, frstly, only one fringe pattern can be projected to reconstruct the shape of object, so high-speed dynamic 3D measurement can be realized. Secondly, compared with Fourier transform proflometry, two dimensional wavelet transform proflometry has better noise suppression ability. Thirdly, the least square phase unwrapping method has good robustness, unwrapping phase is smooth. The computer simulation compares the results of wrapped phase demodulating by the Fourier transform, the one dimensional and two dimensional wavelet transform, the performance of three different mother wavelet and several spatial phase unwrapping methods, and the dynamic ellipsoid, continuous convex surface and dynamic water ripple are simulated or tested respectively, and the results show the effectiveness of the method proposed in this paper.

Key words: high-speed dynamic 3D measurement, two-dimensional wavelet transform, Fourier transform, least square method

CLC Number:

TP191.41

WANG Jian-hua, YANG yan-xi. High-Speed Dynamic Three-Dimensional Shape Measurement[J]. Journal of Applied Sciences, 2018, 36(6): 936-949.

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High-Speed Dynamic Three-Dimensional Shape Measurement

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