228 citations · 571 across the 28 of their papers we have counts for
5 papers · 1 filter
A generalized conditional gradient method for dynamic inverse problems with optimal transport regularization
Kristian Bredies, Marcello Carioni, Silvio Fanzon +1
We develop a dynamic generalized conditional gradient method (DGCG) for dynamic inverse problems with optimal transport regularization. We consider the framework introduced in (Bre…
Non-linear fitting with joint spatial regularization in Arterial Spin Labeling
Oliver Maier, Stefan M Spann, Daniela Pinter +7
Multi-Delay single-shot arterial spin labeling (ASL) imaging provides accurate cerebral blood flow (CBF) and, in addition, arterial transit time (ATT) maps but the inherent low SNR…
A superposition principle for the inhomogeneous continuity equation with Hellinger-Kantorovich-regular coefficients
Kristian Bredies, Marcello Carioni, Silvio Fanzon
We study measure-valued solutions of the inhomogeneous continuity equation where the coefficients and are of low regularity. A ne…
Inverse problems with second-order Total Generalized Variation constraints
Kristian Bredies, Tuomo Valkonen
Total Generalized Variation (TGV) has recently been introduced as penalty functional for modelling images with edges as well as smooth variations. It can be interpreted as a "spars…
Convergence analysis of pixel-driven Radon and fanbeam transforms
Kristian Bredies, Richard Huber
This paper presents a novel mathematical framework for understanding pixel-driven approaches for the parallel beam Radon transform as well as for the fanbeam transform, showing tha…