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首页> 外文期刊>Optical engineering >Improving the measurement accuracy of shadow moire by three-step random phase-shifting algorithm
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Improving the measurement accuracy of shadow moire by three-step random phase-shifting algorithm

机译：三步随机相移算法提高阴影网纹的测量精度

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摘要

Phase-shifting shadow moire is an efficient technique for three-dimensional (3-D) shape measurement, but the technique is always suffered from the error of phase shifter. A three-frame random phase-shifting algorithm is proposed to relax the requirements of repeatability and accuracy of the phase shifter in a shadow moire system. The proposed method can act as a bridge between the three phase-shifting analysis methods and two-shot phase-shifting methods. The value of introduced arbitrary and unknown phase shift can be calculated by a determinate formula. The algorithm has the advantages of being free from the disturbance of background elimination and less computation. In addition, the proposed method is immune to nonsinusoidal fringe patterns and can be implemented easily in many applications. Both simulation and optical experimental results verify the feasibility Of this method.
机译：相移阴影波纹是一种用于测量三维（3-D）形状的有效技术，但是该技术始终会受到移相器误差的影响。提出了一种三帧随机相移算法，以减轻阴影波纹系统中移相器的重复性和精度要求。所提出的方法可以作为三种相移分析方法和两次相移方法之间的桥梁。可以通过确定公式来计算引入的任意和未知相移的值。该算法不受背景消除的干扰，计算量少。另外，所提出的方法不受非正弦条纹图案的影响，并且可以在许多应用中容易地实现。仿真和光学实验结果均验证了该方法的可行性。

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  • 来源
    《Optical engineering》 |2018年第5期|054107.1-054107.6|共6页
  • 作者

    Hubing Du; Jianhong Yu; Shaofeng Zhang;

  • 作者单位

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

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

    Xi'an Technological University, School of Mechatronic Engineering, Xi'an, Shaanxi, 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

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

    机译：相移算法;阴影云纹相;相移;

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