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Related Experiment Videos

Windowed Fourier transform for fringe pattern analysis: addendum.

Qian Kemao1

  • 1Center for Graphics and Imaging Technology, School of Computer Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore. mkmqian@ntu.edu.sg

Applied Optics
|June 29, 2004
PubMed
Summary
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This study demonstrates the windowed Fourier transform method

Area of Science:

  • Optical Metrology
  • Image Processing

Background:

  • Previous work focused on phase extraction from shifted or single-carrier fringe patterns using windowed Fourier transform.
  • The windowed Fourier transform (WFT) is a powerful tool for analyzing fringe patterns.

Purpose of the Study:

  • To extend the application of WFT for processing single closed-fringe patterns.
  • To showcase the versatility of WFT in noise reduction and phase approximation for fringe analysis.

Main Methods:

  • Application of existing windowed Fourier transform algorithms.
  • Processing of single closed-fringe patterns.

Main Results:

  • Demonstrated successful application of WFT to closed-fringe patterns.
  • Showcased noise reduction capabilities of WFT for fringe analysis.

Related Experiment Videos

  • Validated WFT for phase approximation in closed-fringe patterns.
  • Conclusions:

    • The windowed Fourier transform method is versatile for analyzing various fringe patterns, including closed-fringe types.
    • WFT offers effective noise reduction and phase approximation for fringe pattern analysis.