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首页> 外文期刊>Measurement Science & Technology >Phase unwrapping algorithm based on multi-frequency fringe projection and fringe background for fringe projection profilometry
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Phase unwrapping algorithm based on multi-frequency fringe projection and fringe background for fringe projection profilometry

机译：基于多频条纹投影和条纹背景的相位展开算法

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摘要

A phase unwrapping algorithm specially designed for the phase-shifting fringe projection profilometry (FPP) is proposed. It combines a revised dual-frequency fringe projectionalgorithm and a proposed fringe background based quality guided phase unwrapping algorithm (FB-QGPUA). Phase demodulated from the high-frequency fringe patterns is partially unwrapped by that demodulated from the low-frequency ones. Then FB-QGPUA is adopted to further unwrap the partially unwrapped phase. Influences of the phase error on the measurement are researched. Strategy to select the fringe pitch is given. Experiments demonstrate that the proposed method is very robust and efficient.
机译：提出了一种专为相移条纹投影轮廓图（FPP）设计的相位展开算法。它结合了修订后的双频条纹投影算法和一种基于条纹背景的质量导引相位展开算法（FB-QGPUA）。从高频条纹图案解调的相位被从低频条纹图案解调的相位部分地解包。然后采用FB-QGPUA进一步展开部分展开的阶段。研究了相位误差对测量的影响。给出了选择边缘节距的策略。实验表明，该方法具有很好的鲁棒性和有效性。

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