TY - GEN
T1 - Image reconstruction from nonuniformly spaced samples in Fourier domain optical coherence tomography
AU - Ke, Jun
AU - Zhu, Rui
AU - Lam, Edmund Y.
PY - 2012
Y1 - 2012
N2 - In this work, we use inverse imaging for object reconstruction from nonuniformly-spaced samples in Fourier domain optical coherence tomography (FD-OCT). We first model the FD-OCT system with a linear system of equations, where the source power spectrum and the nonuniformly-spaced sample positions are represented accurately. Then, we reconstruct the object signal directly from the nonuniformly-spaced wavelength measurements. With the inverse imaging method, we directly estimate the 2D cross-sectional object image instead of a set of independent A-line signals. By using the Total Variation (TV) as a constraint in the optimization process, we reduce the noise in the 2D object estimation. Besides TV, object sparsity is also used as a regularization for the signal reconstruction in FD-OCT. Experimental results demonstrate the advantages of our method, as we compare it with other methods.
AB - In this work, we use inverse imaging for object reconstruction from nonuniformly-spaced samples in Fourier domain optical coherence tomography (FD-OCT). We first model the FD-OCT system with a linear system of equations, where the source power spectrum and the nonuniformly-spaced sample positions are represented accurately. Then, we reconstruct the object signal directly from the nonuniformly-spaced wavelength measurements. With the inverse imaging method, we directly estimate the 2D cross-sectional object image instead of a set of independent A-line signals. By using the Total Variation (TV) as a constraint in the optimization process, we reduce the noise in the 2D object estimation. Besides TV, object sparsity is also used as a regularization for the signal reconstruction in FD-OCT. Experimental results demonstrate the advantages of our method, as we compare it with other methods.
KW - Fourier domain optical coherence tomography (FD-OCT)
KW - L norm
KW - inverse imaging
KW - nonuniform discrete Fourier transform (NUDFT)
KW - total variation (TV)
UR - http://www.scopus.com/inward/record.url?scp=84857945250&partnerID=8YFLogxK
U2 - 10.1117/12.907331
DO - 10.1117/12.907331
M3 - Conference contribution
AN - SCOPUS:84857945250
SN - 9780819489432
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Proceedings of SPIE-IS and T Electronic Imaging - Computational Imaging X
T2 - Computational Imaging X
Y2 - 23 January 2012 through 24 January 2012
ER -