Learning from small data sets: Patch‐based regularizers in inverse problems for image reconstruction
The solution of inverse problems is of fundamental interest in medical and astronomical
imaging, geophysics as well as engineering and life sciences. Recent advances were made …
imaging, geophysics as well as engineering and life sciences. Recent advances were made …
Posterior sampling based on gradient flows of the MMD with negative distance kernel
We propose conditional flows of the maximum mean discrepancy (MMD) with the negative
distance kernel for posterior sampling and conditional generative modeling. This MMD …
distance kernel for posterior sampling and conditional generative modeling. This MMD …
[图书][B] Generalized normalizing flows via Markov chains
Normalizing flows, diffusion normalizing flows and variational autoencoders are powerful
generative models. This Element provides a unified framework to handle these approaches …
generative models. This Element provides a unified framework to handle these approaches …
Importance corrected neural JKO sampling
J Hertrich, R Gruhlke - arXiv preprint arXiv:2407.20444, 2024 - arxiv.org
In order to sample from an unnormalized probability density function, we propose to
combine continuous normalizing flows (CNFs) with rejection-resampling steps based on …
combine continuous normalizing flows (CNFs) with rejection-resampling steps based on …
Conditional generative models are provably robust: Pointwise guarantees for bayesian inverse problems
Conditional generative models became a very powerful tool to sample from Bayesian
inverse problem posteriors. It is well-known in classical Bayesian literature that posterior …
inverse problem posteriors. It is well-known in classical Bayesian literature that posterior …
Robustness and exploration of variational and machine learning approaches to inverse problems: An overview
This paper provides an overview of current approaches for solving inverse problems in
imaging using variational methods and machine learning. A special focus lies on point …
imaging using variational methods and machine learning. A special focus lies on point …
PatchNR: learning from very few images by patch normalizing flow regularization
Learning neural networks using only few available information is an important ongoing
research topic with tremendous potential for applications. In this paper, we introduce a …
research topic with tremendous potential for applications. In this paper, we introduce a …
Equivariant bootstrapping for uncertainty quantification in imaging inverse problems
J Tachella, M Pereyra - arXiv preprint arXiv:2310.11838, 2023 - arxiv.org
Scientific imaging problems are often severely ill-posed, and hence have significant intrinsic
uncertainty. Accurately quantifying the uncertainty in the solutions to such problems is …
uncertainty. Accurately quantifying the uncertainty in the solutions to such problems is …
Semi-unbalanced optimal transport for image restoration and synthesis
In this paper, we build on optimal transport (OT) theory to present a novel asymmetrically
unbalanced variant, the semi-unbalanced optimal transport (SUOT), specifically designed …
unbalanced variant, the semi-unbalanced optimal transport (SUOT), specifically designed …
Stochastic super-resolution for Gaussian textures
Super-resolution (SR) is an ill-posed inverse problem which consists in proposing high-
resolution images consistent with a given low-resolution one. While most SR algorithms are …
resolution images consistent with a given low-resolution one. While most SR algorithms are …