48 citations · 103 across the 3 of their papers we have counts for
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math.OC2015★ 48 cited
Relaxed Linearized Algorithms for Faster X-Ray CT Image Reconstruction
Hung Nien, Jeffrey A. Fessler
Statistical image reconstruction (SIR) methods are studied extensively for X-ray computed tomography (CT) due to the potential of acquiring CT scans with reduced X-ray dose while m…
math.OC2014★ 42 cited
Fast X-ray CT image reconstruction using the linearized augmented Lagrangian method with ordered subsets
Hung Nien, Jeffrey A. Fessler
The augmented Lagrangian (AL) method that solves convex optimization problems with linear constraints has drawn more attention recently in imaging applications due to its decomposa…
math.OC2014★ 13 cited
A convergence proof of the split Bregman method for regularized least-squares problems
Hung Nien, Jeffrey A. Fessler
The split Bregman (SB) method [T. Goldstein and S. Osher, SIAM J. Imaging Sci., 2 (2009), pp. 323-43] is a fast splitting-based algorithm that solves image reconstruction problems…