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Modified Fourier-transform method for phase-shift calibration

机译:修正傅里叶变换相移校准方法

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摘要

A fast convergent algorithm to accurately measure phase-shift for phase shifter is proposed. In the presence of a spatial carrier frequency, an error function in the Fourier-domain is introduced and then the unknown phase-shift between two phase-shifted fringe patterns is determined by minimization of the error function with the help of a golden section search approach. Compared with the conventional Fourier-transform method, the modified method proposed in the paper is more immune to random noise and hence can give a more accurate result. The translation curve of a liquid-crystal spatial light modulator is also experimentally calibrated.
机译:提出了一种快速收敛的移相器精确测量算法。在存在空间载频的情况下,引入傅立叶域中的误差函数,然后借助黄金分割搜索方法,通过最小化误差函数,确定两个相移条纹图案之间的未知相移。与传统的傅立叶变换方法相比,本文提出的改进方法对随机噪声具有更大的免疫力,因此可以给出更准确的结果。液晶空间光调制器的平移曲线也通过实验进行了校准。

著录项

  • 来源
    《Optics and Lasers in Engineering》 |2011年第7期|p.932-936|共5页
  • 作者单位

    College of Mechanical Engineering, Inner Mongolia University of Technology, Huhhot 010051, People's Republic of China;

    College of Mechanical Engineering, Inner Mongolia University of Technology, Huhhot 010051, People's Republic of China;

    College of Mechanical Engineering, Inner Mongolia University of Technology, Huhhot 010051, People's Republic of China;

    College of Mechanical Engineering, Inner Mongolia University of Technology, Huhhot 010051, People's Republic of China;

    College of Mechanical Engineering, Inner Mongolia University of Technology, Huhhot 010051, People's Republic of 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-shift calibration; fringe pattern; modified fourier-transform method; golden section search approach;

    机译:相移校准条纹图案改进的傅立叶变换法;黄金分割搜索方法;

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