Modelling the shift-variance in Fourier-domain optical coherence tomography

5 March 2021 Modelling the shift-variance in Fourier-domain optical coherence tomography

Yuye Ling, Mengyuan Wang, Yu Gan, Xinwen Yao, Leopold Schmetterer, Chuanqing Zhou, Yikai Su

Proceedings Volume 11630, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXV; 1163025 (2021) https://doi.org/10.1117/12.2580633
Event: SPIE BiOS, 2021, Online Only

Conference Poster

Abstract

Here, we analytically study the signal digitization procedure in FD-OCT and propose a novel mixed-signal framework to model its time-domain image formation. It turns out that FD-OCT is a shift-variant system, if the conventional IDFT-based technique is used to reconstruct the A-lines. Specifically, both amplitude and phase responses of the system are dependent on the axial location of the input sample. We believe this finding could provide us with new insights towards the image reconstruction of FD-OCT and guide researchers to develop better reconstruction algorithms in the future.

Conference Presentation

Citation Download Citation

Yuye Ling, Mengyuan Wang, Yu Gan, Xinwen Yao, Leopold Schmetterer, Chuanqing Zhou, and Yikai Su "Modelling the shift-variance in Fourier-domain optical coherence tomography", Proc. SPIE 11630, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXV, 1163025 (5 March 2021); https://doi.org/10.1117/12.2580633

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