Phase estimation for global defocus correction in optical coherence tomography

Mikkel Jensen, Niels Møller Israelsen, Adrian Podoleanu, Ole Bang

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    In this work we investigate three techniques for estimation of the non-linear phase present due to defocus in opticalcoherence tomography, and apply them with the angular spectrum method. The techniques are: Least squarestting the of unwrapped phase of the angular spectrum, iterative optimization, and sub-aperture correlations. The estimated phase of a single en-face image is used to extrapolate the non-linear phase at all depths, whichin the end can be used to correct the entire 3-D tomogram, and any other tomogram from the same system.
    Original languageEnglish
    Title of host publicationProceedings of the 2nd Canterbury Conference on Optical Coherence Tomography (CCOCT 2017)
    Number of pages5
    PublisherSPIE - International Society for Optical Engineering
    Publication date2017
    ISBN (Print)9781510616745
    DOIs
    Publication statusPublished - 2017
    Event2nd Canterbury Conference on Optical Coherence Tomography: Emphasis on broadband sources - University of Kent, Canterbury, United Kingdom
    Duration: 6 Sep 20178 Sep 2017

    Conference

    Conference2nd Canterbury Conference on Optical Coherence Tomography
    LocationUniversity of Kent
    Country/TerritoryUnited Kingdom
    CityCanterbury
    Period06/09/201708/09/2017

    Keywords

    • Optical coherence tomography
    • Angular spectrum method
    • Defocus correction

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