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Interferogram analysis using Fourier transform techniques.

C Roddier, F Roddier

    Applied Optics
    |May 11, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Fourier transform techniques map complex fringe visibility in interferograms. An iterative method removes edge effects for improved seeing measurements and interferometric tests.

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    Area of Science:

    • Optical physics
    • Image processing

    Background:

    • Interferograms contain complex fringe visibility data.
    • Edge effects can obscure important information in interferograms.

    Purpose of the Study:

    • To apply Fourier transform techniques for mapping complex fringe visibility.
    • To utilize an iterative method for edge effect removal in interferograms.

    Main Methods:

    • Fourier transform techniques were employed.
    • A Gerchberg-type iterative algorithm was used to eliminate edge effects.

    Main Results:

    • Complex fringe visibility was successfully mapped.
    • The iterative technique effectively removed edge effects.
    • Results were demonstrated for seeing measurements and interferometric tests.

    Conclusions:

    • Fourier transform methods combined with iterative edge effect removal provide accurate fringe visibility mapping.
    • This approach enhances the analysis of interferometric data for applications like astronomical seeing and optical testing.