1 code implementation • 28 Feb 2023 • Josua Sassen, Klaus Hildebrandt, Martin Rumpf, Benedikt Wirth
Parametrizations of data manifolds in shape spaces can be computed using the rich toolbox of Riemannian geometry.
1 code implementation • 22 Aug 2022 • Juliane Braunsmann, Marko Rajković, Martin Rumpf, Benedikt Wirth
The encoder embeds the input data manifold into a lower-dimensional latent space, while the decoder represents the inverse map, providing a parametrization of the data manifold by the manifold in latent space.
no code implementations • 27 Apr 2021 • Juliane Braunsmann, Marko Rajković, Martin Rumpf, Benedikt Wirth
The encoder provides an embedding from the input data manifold into a latent space which may then be used for further processing.
no code implementations • 15 Dec 2020 • Hanne Hardering, Benedikt Wirth
Still, concepts from the linear setting may be generalized to the Riemannian case, where we try to use intrinsic Riemannian formulations and avoid charts as much as possible.
Numerical Analysis Numerical Analysis 65D10, 65D05
no code implementations • 20 Feb 2019 • Bernhard Schmitzer, Klaus P. Schäfers, Benedikt Wirth
In contrast to conventional PET reconstruction our method combines the information from all detected events not only to reconstruct the dynamic evolution of the radionuclide distribution, but also to improve the reconstruction at each single time point by enforcing temporal consistency.
1 code implementation • 18 Oct 2017 • Christoph Brauer, Christian Clason, Dirk Lorenz, Benedikt Wirth
We further investigate numerically the robustness of the proposed method with respect to parameters such as the mesh size of the discretization.
no code implementations • 8 Jan 2017 • Bernhard Schmitzer, Benedikt Wirth
We propose a unifying framework for generalising the Wasserstein-1 metric to a discrepancy measure between nonnegative measures of different mass.
no code implementations • 24 Dec 2016 • Benjamin Berkels, Benedikt Wirth
Nowadays, modern electron microscopes deliver images at atomic scale.
1 code implementation • 23 Nov 2016 • Christian Clason, Carla Tameling, Benedikt Wirth
We consider a class of (ill-posed) optimal control problems in which a distributed vector-valued control is enforced to pointwise take values in a finite set $\mathcal{M}\subset\mathbb{R}^m$.
Optimization and Control