Resolution enhancement with improved range Doppler algorithm in high numerical aperture OCT

Xiaodong Chen; Yong Lei; Yi Wang; Daoyin Yu

doi:doi:10.3788/col201109.121001

Chinese Optics Letters, 2011, 9 (12): 121001, Published Online: Nov. 4, 2011

Resolution enhancement with improved range Doppler algorithm in high numerical aperture OCT

论文大纲

Xiaodong Chen Yong Lei Yi Wang Daoyin Yu

Author Affiliations

100.3010 Image reconstruction techniques 100.2000 Digital image processing 100.2980 Image enhancement

Abstract

The improved range Doppler algorithm is proposed to abate the trade-off between resolutions and depth of focus in spectral domain optical coherence tomography. By considering the finite beam width and the shape of the wavefronts produced by the Gaussian beam, a physical diffraction model is presented to simulate the light propagation process in the sample. The two-dimensional processing of the spectrum data is decomposed into two one-dimensional processings of Stolt transform and matched filter. Experimental results show that image reconstruction can be achieved. The transverse and axial resolutions are both improved significantly, especially in the out-of-focus range, and the resolutions are almost equivalent throughout the entire region of interest.

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Xiaodong Chen, Yong Lei, Yi Wang, Daoyin Yu. Resolution enhancement with improved range Doppler algorithm in high numerical aperture OCT[J]. Chinese Optics Letters, 2011, 9(12): 121001.

Resolution enhancement with improved range Doppler algorithm in high numerical aperture OCT

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