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


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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.



Edited by:

Han Zhao






Y. Lei et al., "Resolution Improvement with Two-Dimensional Digital Focusing Method in Optical Coherence Tomography", Applied Mechanics and Materials, Vols. 130-134, pp. 4032-4035, 2012

Online since:

October 2011




[1] D. Huang, E.A. Swanson, C.P. Lin, et al.: submitted to Science (1991).

[2] ZH. Ding, H. Ren, Y. Zhao, J.S. Nelson and ZH. Chen: submitted to Optical Letter (2002).

[3] M.J. Cobb, X. Liu and X. Li: submitted to Optics Letters (2005).

[4] I.J. Hsu, CH.W. Sun, CH.W. Lu, C.C. Yang, CH.P. Chiang and CH.W. Lin: submitted to Applied Optics (2003).

[5] Y. Yasuno, J. Sugisaka and Y. Sando: submitted to Optics Express (2006).

[6] L. Yu, B. Rao, J. Zhang, J. Su, Q. Wang, SH. Guo and ZH. Chen: submitted to Optics Express (2007).

[7] T.S. Ralston, D.L. Marks, P.S. Carney and S.A. Boppart: submitted to Nature Physics (2007).

[8] I.G. Cumming and F.H. Wong: Digital Processing Of Synthetic Aperture Radar Data: Algorithms and Implementation (Artech House Inc., America 2007).

[9] J.C. Curlander and R. N. Mcdonough: Synthetic Aperture Radar: Systems and Signal Processing (Publishing House of Electronics Industry, China 2006).

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