Resolution improvement with two-dimensional digital focusing method in optical coherence tomography
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.
Spectral domain optical coherence tomography Wavenumber domain algorithm Matched filter Image reconstruction
Yong Lei Rui Huang Xiaodong Chen Yi Wang Daoyin YU
College of Pricision instrument and Opto-Electronic Engineering, Tianjin University, Opto-Electronic Information Science and Technical Lab, Ministry of Education, Tianjin 300072, China
国际会议
合肥
英文
4032-4035
2011-09-23（万方平台首次上网日期，不代表论文的发表时间）