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<p>The efficiency of phase imaging is critical to the real-time imaging of phase objects. In this paper, based on the fast average operation, an efficient phase imaging method with blind phase shifts is proposed. In this work, the intensity difference of every two phase-shifted interferograms is calculated first, and then the average of its square is calculated under the assumption of phase random operation. Subsequently, the blind phase shifts can be calculated efficiently. Finally, the measured phase is obtained. This method is simpler and faster than traditional algorithms since the complex calculations or iterative operations are unnecessary. Moreover, the phase shift can be any value within the principal range <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\((0,2\pi )\)</EquationSource> </InlineEquation>. Simulation and experimental results verify the feasibility of this proposed method, and also verify that this method is applicable not only to an open straight pattern, but also to a closed circular pattern.</p>

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Efficient phase imaging method with blind phase shifts based on fast average operation

  • 期刊论文

  • 发表日期：

    2026年7月16日

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  • Yuanyuan Xu,
  • Yiru Fan,
  • Yining Wang,
  • Wanxiang Wang,
  • Ying Ji

摘要

The efficiency of phase imaging is critical to the real-time imaging of phase objects. In this paper, based on the fast average operation, an efficient phase imaging method with blind phase shifts is proposed. In this work, the intensity difference of every two phase-shifted interferograms is calculated first, and then the average of its square is calculated under the assumption of phase random operation. Subsequently, the blind phase shifts can be calculated efficiently. Finally, the measured phase is obtained. This method is simpler and faster than traditional algorithms since the complex calculations or iterative operations are unnecessary. Moreover, the phase shift can be any value within the principal range \((0,2\pi )\) . Simulation and experimental results verify the feasibility of this proposed method, and also verify that this method is applicable not only to an open straight pattern, but also to a closed circular pattern.