3 papers
eess.IV2025
Position-Blind Ptychography: Viability of image reconstruction via data-driven variational inference
Simon Welker, Lorenz Kuger, Tim Roith +4
In this work, we present and investigate the novel blind inverse problem of position-blind ptychography, i.e., ptychographic phase retrieval without any knowledge of scan positions…
math.OC2024
Analysis of Primal-Dual Langevin Algorithms
Martin Burger, Matthias J. Ehrhardt, Lorenz Kuger +1
We analyze a recently proposed class of algorithms for the problem of sampling from probability distributions in with a Lebesgue density of the form $μ^\ast…
stat.CO2023
Proximal Langevin Sampling With Inexact Proximal Mapping
Matthias J. Ehrhardt, Lorenz Kuger, Carola-Bibiane Schönlieb
In order to solve tasks like uncertainty quantification or hypothesis tests in Bayesian imaging inverse problems, we often have to draw samples from the arising posterior distribut…