作者:许少毅，冯廷宇，邢方方，沈涛
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Authors:XU Shao-yi,FENG Ting-yu,XING Fang-fang,SHEN Tao
摘要:摘要:针对传统相移轮廓术所需采集条纹图数目多、测量效率低的问题，提出了一种傅里叶变换轮廓术辅助相移法展开包裹相位的融合方法。先通过相移法计算出单一高频相移条纹的包裹相位，再对高频相移条纹采用傅里叶变换轮廓术得到初步展开相位，结合初步展开相位计算包裹相位的条纹级次，根据条纹级次展开包裹相位得到最终展开相位。该方法只需要单一高频相移条纹图，即可得到物体相位信息。通过仿真和实验将该融合方法与传统方法进行了比较，结果表明，所提融合方法较相移轮廓术所需采集的条纹图数量减少66.7%，避免了傅里叶变换轮廓术频谱选择导致的物体细节信息的丢失，计算的相位精度更高，并对滤波窗口的选择不敏感。

Abstract:Abstract:In order to solve the problem of low measurement efficiency in traditional phase shifting profilometry， a phase unwrapping method using Fourier transform assisted phase-shifting method is proposed. The preliminary unwrapped phase is obtained by Fourier transform for the high-frequency phase-shifting fringe. Combined with the wrapped phase calculated by the phase-shifting method， the fringe order of the wrapped phase can be calculated. Then the final unwrapped phase is obtained according to the fringe order. With this method， only single high-frequency phase-shifting fringe patterns are needed to obtain the object phase information. The results show that compared with the phase-shifting method， the number of fringe patterns needing to be captured by the proposed method reduce 66.7%. Compared with the Fourier transform method， the phase accuracy calculated by the proposed method is higher. The proposed method has better detail information and is not sensitive to the selection of the filter.

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