Spectral fusing Gabor domain optical coherence microscopy

Optics Letters
Panomsak MeemonJannick P Rolland

Abstract

Gabor domain optical coherence microscopy (GD-OCM) is one of many variations of optical coherence tomography (OCT) techniques that aims for invariant high resolution across a 3D field of view by utilizing the ability to dynamically refocus the imaging optics in the sample arm. GD-OCM acquires multiple cross-sectional images at different focus positions of the objective lens, and then fuses them to obtain an invariant high-resolution 3D image of the sample, which comes with the intrinsic drawback of a longer processing time as compared to conventional Fourier domain OCT. Here, we report on an alternative Gabor fusing algorithm, the spectral-fusion technique, which directly processes each acquired spectrum and combines them prior to the Fourier transformation to obtain a depth profile. The implementation of the spectral-fusion algorithm is presented and its performance is compared to that of the prior GD-OCM spatial-fusion approach. The spectral-fusion approach shows twice the speed of the spatial-fusion approach for a spectrum size of less than 2000 point sampling, which is a commonly used spectrum size in OCT imaging, including GD-OCM.

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Apr 4, 2014·Journal of Biomedical Optics·Patrice TankamJannick P Rolland

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Citations

Mar 9, 2017·Biomedical Optics Express·Ramona CernatAdrian Podoleanu
Aug 8, 2019·Journal of Biomedical Optics·Changsik YoonJannick Rolland
Jan 4, 2018·Biomedical Optics Express·Chaoliang Chen, Victor X D Yang
Apr 26, 2019·Journal of Biomedical Optics·Patrice TankamJannick P Rolland
Mar 12, 2020·Applied Sciences·Cristina Canavesi, Jannick P Rolland
Mar 11, 2021·Applied Optics·Panomsak MeemonJoewono Widjaja

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