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首页> 外文期刊>Optical engineering >Phase extraction from random phase-shifted shadow moire fringe patterns using stereovision technique
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Phase extraction from random phase-shifted shadow moire fringe patterns using stereovision technique

机译：使用立体视觉技术从随机相移的阴影莫尔条纹图案中提取相位

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摘要

The measurement accuracy of phase shifting shadow moire is affected by both the spatially nonuni-form phase shift error and random phase shift error. Substantial work has been done to overcome this difficulty, but few works can deal with the two error sources simultaneously. In the presented paper, we describe a solution that can compensate for the two error sources at the same time. In our method, a binocular stereovision system is integrated into a shadow moire configuration to calibrate the setting parameters. Thus, a precise measurement setup is built. Then, we developed an iterative least-squares algorithm to analyze the acquired three fringe patterns. The proposed algorithm can extract the measurement phase without nonuniform phase shift error. On the other hand, it can compensate the random phase shift error by calibrating the distance of grating translation using the least-squares fitting in spatial. Optical experiments show that the proposed method can effectively minimize the phase-shift error and that it possesses a superior performance than the existing typical phase Shifting algorithm.
机译：相移阴影波纹的测量精度受空间非均匀相移误差和随机相移误差的影响。为了克服这个困难，已经进行了大量工作，但是很少有工作可以同时处理两个错误源。在本文中，我们描述了一种可以同时补偿两个误差源的解决方案。在我们的方法中，将双目立体视觉系统集成到阴影波纹配置中以校准设置参数。因此，建立了精确的测量设置。然后，我们开发了一种迭代最小二乘算法来分析获取的三个条纹图案。所提出的算法可以提取测量相位而不会出现不均匀的相移误差。另一方面，它可以通过使用空间中的最小二乘拟合来校准光栅平移的距离，从而补偿随机相移误差。光学实验表明，所提出的方法可以有效地减小相移误差，并且比现有的典型相移算法具有更好的性能。

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  • 来源
    《Optical engineering》 |2014年第4期|044109.1-044109.7|共7页
  • 作者

    Hubing Du; Jianhua Wang; Hong Zhao; Feifei Gu; Jinlei Zhao;

  • 作者单位

    Xi'an Technological University, School of Mechatronic Engineering, Xi'an, Shaanxi 710032, China,Xi'an Jiaotong University, State Key Laboratory for Manufacturing Systems Engineering, Xi'an, Shaanxi 710049, China;

    Xi'an Technological University, School of Mechatronic Engineering, Xi'an, Shaanxi 710032, China;

    Xi'an Jiaotong University, State Key Laboratory for Manufacturing Systems Engineering, Xi'an, Shaanxi 710049, China;

    Xi'an Jiaotong University, State Key Laboratory for Manufacturing Systems Engineering, Xi'an, Shaanxi 710049, China;

    Xi'an Jiaotong University, State Key Laboratory for Manufacturing Systems Engineering, Xi'an, Shaanxi 710049, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    iterative algorithm; shadow moire; phase; phase-shifting;

    机译：迭代算法;阴影云纹相;相移;

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