z-logo
open-access-imgOpen Access
Bulk-phase-error correction for phase-sensitive signal processing of optical coherence tomography
Author(s) -
Kensuke Oikawa,
Daisuke Oida,
Shuichi Makita,
Yoshiaki Yasuno
Publication year - 2020
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.396666
Subject(s) - optical coherence tomography , optics , phase (matter) , image quality , computer science , physics , algorithm , computer vision , image (mathematics) , quantum mechanics
We present a numerical phase stabilization method for phase-sensitive signal processing of optical coherence tomography (OCT). This method removes the bulk phase error caused by the axial bulk motion of the sample and the environmental perturbation during volumetric acquisition. In this method, the partial derivatives of the phase error are computed along both fast and slow scanning directions, so that the vectorial gradient field of the phase error is given. Then, the phase error is estimated from the vectorial gradient field by a newly developed line integration method; a smart integration path method. The performance of this method was evaluated by analyzing the spatial frequency spectra of en face OCT images, and it objectively shows the significant phase-error-correction ability of the method. The performance was also evaluated by observing computationally refocused en face images of ex vivo tissue samples, and it was found that the image quality was improved by the phase-error correction.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.
Having issues? You can contact us here