1 code implementation • 5 Nov 2024 • Laurin Lux, Alexander H. Berger, Alexander Weers, Nico Stucki, Daniel Rueckert, Ulrich Bauer, Johannes C. Paetzold
Topological correctness plays a critical role in many image segmentation tasks, yet most networks are trained using pixel-wise loss functions, such as Dice, neglecting topological accuracy.
1 code implementation • 5 Jul 2024 • Nico Stucki, Vincent Bürgin, Johannes C. Paetzold, Ulrich Bauer
In this work, we propose an efficient algorithm for the calculation of the Betti matching, which can be used as a loss function to train topology aware segmentation networks.
1 code implementation • 16 Mar 2024 • Alexander H. Berger, Nico Stucki, Laurin Lux, Vincent Buergin, Suprosanna Shit, Anna Banaszak, Daniel Rueckert, Ulrich Bauer, Johannes C. Paetzold
Topological accuracy in medical image segmentation is a highly important property for downstream applications such as network analysis and flow modeling in vessels or cell counting.
2 code implementations • 28 Nov 2022 • Nico Stucki, Johannes C. Paetzold, Suprosanna Shit, Bjoern Menze, Ulrich Bauer
In this work, we propose the first topologically and feature-wise accurate metric and loss function for supervised image segmentation, which we term Betti matching.
1 code implementation • CVPR 2021 • Suprosanna Shit, Johannes C. Paetzold, Anjany Sekuboyina, Ivan Ezhov, Alexander Unger, Andrey Zhylka, Josien P. W. Pluim, Ulrich Bauer, Bjoern H. Menze
Accurate segmentation of tubular, network-like structures, such as vessels, neurons, or roads, is relevant to many fields of research.
no code implementations • 14 Jun 2021 • Michael Bleher, Lukas Hahn, Maximilian Neumann, Juan Angel Patino-Galindo, Mathieu Carriere, Ulrich Bauer, Raul Rabadan, Andreas Ott
By leveraging the stratification by time in sequence data, our method enables the high-resolution longitudinal analysis of topological signals of adaptation.
no code implementations • 23 Dec 2020 • Ulrich Bauer, Maximilian Schmahl
We introduce lifespan functors, which are endofunctors on the category of persistence modules that filter out intervals from barcodes according to their boundedness properties.
Algebraic Topology Computational Geometry 55N31, 55U10, 16G20, 18G05
4 code implementations • 16 Mar 2020 • Suprosanna Shit, Johannes C. Paetzold, Anjany Sekuboyina, Ivan Ezhov, Alexander Unger, Andrey Zhylka, Josien P. W. Pluim, Ulrich Bauer, Bjoern H. Menze
Accurate segmentation of tubular, network-like structures, such as vessels, neurons, or roads, is relevant to many fields of research.
2 code implementations • 7 Aug 2019 • Ulrich Bauer
We present an algorithm for the computation of Vietoris-Rips persistence barcodes and describe its implementation in the software Ripser.
Algebraic Topology Computational Geometry Mathematical Software 55N31, 55-04
no code implementations • 19 Jun 2018 • Mathieu Carriere, Ulrich Bauer
Persistence diagrams are important descriptors in Topological Data Analysis.
no code implementations • NeurIPS 2015 • Roland Kwitt, Stefan Huber, Marc Niethammer, Weili Lin, Ulrich Bauer
We consider the problem of statistical computations with persistence diagrams, a summary representation of topological features in data.
no code implementations • CVPR 2015 • Jan Reininghaus, Stefan Huber, Ulrich Bauer, Roland Kwitt
Topological data analysis offers a rich source of valuable information to study vision problems.
2 code implementations • 3 Mar 2013 • Ulrich Bauer, Michael Kerber, Jan Reininghaus
We present a parallelizable algorithm for computing the persistent homology of a filtered chain complex.
Algebraic Topology