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Resolution Improvement with Two-Dimensional Digital Focusing Method in Optical Coherence Tomography

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Abstract:

This paper presents a two-dimensional (2D) digital focusing method to alleviate the compromise between the resolution and depth of field (DOF) in spectral domain optical coherence tomography (SDOCT). A scalar diffraction model is developed to simulate the wave propagation process from out-of-focus scatterers and the inverse scattering problem is solved. The wavenumber domain algorithm is applied to improve the transverse resolution, and the matched filter to improve the axial resolution. Image reconstruction with spatially invariant resolution can be achieved. The 2D imaging experimental results of fresh pig liver prove the effectiveness of the proposed method.

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Periodical:

Applied Mechanics and Materials (Volumes 130-134)

Pages:

4032-4035

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.130-134.4032

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Online since:

October 2011

Authors:

Yong Lei, Rui Huang, Xiao Dong Chen, Yi Wang, Dao Yin Yu

Keywords:

Image Reconstruction, Matched Filter, Spectral Domain Optical Coherence Tomography, Wavenumber Domain Algorithm

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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