23 citations · 33 across the 7 of their papers we have counts for
7 papers
Dual-grid parameter choice method with application to image deblurring
Markus Juvonen, Bjørn Jensen, Ilmari Pohjola +2
Variational regularization of ill-posed inverse problems is based on minimizing the sum of a data fidelity term and a regularization term. The balance between them is tuned using a…
A nonsmooth primal-dual method with interwoven PDE constraint solver
Bjørn Jensen, Tuomo Valkonen
We introduce an efficient first-order primal-dual method for the solution of nonsmooth PDE-constrained optimization problems. We achieve this efficiency through not solving the PDE…
Conductivity reconstruction from power density data in limited view
Bjørn Jensen, Kim Knudsen, Hjørdis Schlüter
In Acousto-Electric tomography, the objective is to extract information about the interior electrical conductivity in a physical body from knowledge of the interior power density d…
Efficient Uncertainty Quantification and Sensitivity Analysis in Epidemic Modelling using Polynomial Chaos
Bjørn Jensen, Allan P. Engsig-Karup, Kim Knudsen
In the political decision process and control of COVID-19 (and other epidemic diseases), mathematical models play an important role. It is crucial to understand and quantify the un…
Sound speed uncertainty in Acousto-Electric Tomography
Bjørn Christian Skov Jensen, Kim Knudsen
The goal in acousto-electric tomography (AET) is to reconstruct an image of the unknown electric conductivity in an object from exterior electrostatic currents and voltages that ar…
Feasibility of Acousto-Electric Tomography
Bjørn Jensen, Adrian Kirkeby, Kim Knudsen
In acousto-electric tomography the goal is to reconstruct the electric conductivity in a domain from electrostatic boundary measurements of corresponding currents and voltages, whi…
Acousto-Electric Tomography with Total Variation Regularization
Bolaji James Adesokan, Bjørn Jensen, Bangti Jin +1
We study the numerical reconstruction problem in acousto-electric tomography of recovering the conductivity distribution in a bounded domain from interior power density data. We pr…