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
CountryUnited Kingdom
CityCanterbury
Period06/09/201708/09/2017

Keywords

  • Optical coherence tomography
  • Angular spectrum method
  • Defocus correction

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