Phase estimation for global defocus correction in optical coherence tomography

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

Cite this

Jensen, M., Israelsen, N. M., Podoleanu, A., & Bang, O. (2017). Phase estimation for global defocus correction in optical coherence tomography. In Proceedings of the 2nd Canterbury Conference on Optical Coherence Tomography (CCOCT 2017) SPIE - International Society for Optical Engineering. https://doi.org/10.1117/12.2292547
Jensen, Mikkel ; Israelsen, Niels Møller ; Podoleanu, Adrian ; Bang, Ole. / Phase estimation for global defocus correction in optical coherence tomography. Proceedings of the 2nd Canterbury Conference on Optical Coherence Tomography (CCOCT 2017). SPIE - International Society for Optical Engineering, 2017.
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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.",
keywords = "Optical coherence tomography, Angular spectrum method, Defocus correction",
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Jensen, M, Israelsen, NM, Podoleanu, A & Bang, O 2017, Phase estimation for global defocus correction in optical coherence tomography. in Proceedings of the 2nd Canterbury Conference on Optical Coherence Tomography (CCOCT 2017). SPIE - International Society for Optical Engineering, 2nd Canterbury Conference on Optical Coherence Tomography, Canterbury, United Kingdom, 06/09/2017. https://doi.org/10.1117/12.2292547

Phase estimation for global defocus correction in optical coherence tomography. / Jensen, Mikkel; Israelsen, Niels Møller; Podoleanu, Adrian; Bang, Ole.

Proceedings of the 2nd Canterbury Conference on Optical Coherence Tomography (CCOCT 2017). SPIE - International Society for Optical Engineering, 2017.

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

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N2 - 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.

AB - 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.

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KW - Angular spectrum method

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Jensen M, Israelsen NM, Podoleanu A, Bang O. Phase estimation for global defocus correction in optical coherence tomography. In Proceedings of the 2nd Canterbury Conference on Optical Coherence Tomography (CCOCT 2017). SPIE - International Society for Optical Engineering. 2017 https://doi.org/10.1117/12.2292547