Efficient generalized Golub–Kahan based methods for dynamic inverse problems

J Chung, AK Saibaba, M Brown, E Westman - Inverse Problems, 2018 - iopscience.iop.org
We consider efficient methods for computing solutions to and estimating uncertainties in
dynamic inverse problems, where the parameters of interest may change during the …

Inverse problems with inexact forward operator: iterative regularization and application in dynamic imaging

SE Blanke, BN Hahn, A Wald - Inverse Problems, 2020 - iopscience.iop.org
The classic regularization theory for solving inverse problems is built on the assumption that
the forward operator perfectly represents the underlying physical model of the data …

All-at-once versus reduced iterative methods for time dependent inverse problems

B Kaltenbacher - Inverse Problems, 2017 - iopscience.iop.org
In this paper we investigate all-at-once versus reduced regularization of dynamic inverse
problems on finite time intervals (0, T). In doing so, we concentrate on iterative methods and …

Four dimensional material movies: High speed phase-contrast tomography by backprojection along dynamically curved paths

A Ruhlandt, M Töpperwien, M Krenkel, R Mokso… - Scientific reports, 2017 - nature.com
We present an approach towards four dimensional (4d) movies of materials, showing
dynamic processes within the entire 3d structure. The method is based on tomographic …

Dynamic image reconstruction with motion priors in application to 3D magnetic particle imaging

C Brandt, T Kluth, T Knopp, L Westen - arXiv preprint arXiv:2306.11625, 2023 - arxiv.org
Various imaging modalities allow for time-dependent image reconstructions from
measurements where its acquisition also has a time-dependent nature. Magnetic particle …

Efficient Krylov subspace methods for uncertainty quantification in large Bayesian linear inverse problems

AK Saibaba, J Chung, K Petroske - Numerical Linear Algebra …, 2020 - Wiley Online Library
Uncertainty quantification for linear inverse problems remains a challenging task, especially
for problems with a very large number of unknown parameters (eg, dynamic inverse …

Motion estimation and correction in photoacoustic tomographic reconstruction

J Chung, L Nguyen - SIAM Journal on Imaging Sciences, 2017 - SIAM
Motion, eg, due to patient movement or improper device calibration, is inevitable in many
imaging modalities such as photoacoustic tomography (PAT) by a rotating system and can …

Hybrid projection methods for solution decomposition in large-scale bayesian inverse problems

J Chung, J Jiang, SM Miller, AK Saibaba - SIAM Journal on Scientific …, 2024 - SIAM
We develop hybrid projection methods for computing solutions to large-scale inverse
problems, where the solution represents a sum of different stochastic components. Such …

Undersampled dynamic X-ray tomography with dimension reduction Kalman filter

J Hakkarainen, Z Purisha, A Solonen… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
In this paper, we propose a prior-based dimension reduction Kalman filter for undersampled
dynamic X-ray tomography. With this method, the X-ray reconstructions are parameterized …

Dynamic image reconstruction with motion priors in application to three dimensional magnetic particle imaging

C Brandt, T Kluth, T Knopp, L Westen - SIAM Journal on Imaging Sciences, 2024 - SIAM
Various imaging modalities allow for time-dependent image reconstructions from
measurements where its acquisition also has a time-dependent nature. Magnetic particle …