Phase estimation for global defocus correction in optical coherence tomography

被引：0

作者：

Jensen, Mikkel ^{[1
]}

Israelsen, Niels M. ^{[1
]}

Podoleanu, Adrian ^{[2
]}

Bang, Ole ^{[1
]}

机构：

[1] Tech Univ Denmark, DTU Foton, Orsteds Plads 343, DK-2800 Lyngby, Denmark

[2] Univ Kent, Sch Phys Sci, Canterbury CT2 7NH, Kent, England

来源：

2ND CANTERBURY CONFERENCE ON OCT WITH EMPHASIS ON BROADBAND OPTICAL SOURCES | 2018年 / 10591卷

关键词：

Optical coherence tomography; angular spectrum method; defocus correction; ADAPTIVE OPTICS;

D O I：

10.1117/12.2292547

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work we investigate three techniques for estimation of the non-linear phase present due to defocus in optical coherence tomography, and apply them with the angular spectrum method. The techniques are: Least squares fitting 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, which in the end can be used to correct the entire 3-D tomogram, and any other tomogram from the same system.

引用

页数：5

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