Search Results for author: Paul Swoboda

Found 31 papers, 17 papers with code

Convex Variational Image Restoration with Histogram Priors

no code implementations16 Jan 2013 Paul Swoboda, Christoph Schnörr

We present a novel variational approach to image restoration (e. g., denoising, inpainting, labeling) that enables to complement established variational approaches with a histogram-based prior enforcing closeness of the solution to some given empirical measure.

Denoising Image Restoration

Global MAP-Optimality by Shrinking the Combinatorial Search Area with Convex Relaxation

no code implementations NeurIPS 2013 Bogdan Savchynskyy, Jörg Hendrik Kappes, Paul Swoboda, Christoph Schnörr

We consider energy minimization for undirected graphical models, also known as MAP-inference problem for Markov random fields.

Maximum Persistency via Iterative Relaxed Inference with Graphical Models

no code implementations CVPR 2015 Alexander Shekhovtsov, Paul Swoboda, Bogdan Savchynskyy

We propose an efficient implementation, which runs in time comparable to a single run of a suboptimal dual solver.

A Message Passing Algorithm for the Minimum Cost Multicut Problem

no code implementations CVPR 2017 Paul Swoboda, Bjoern Andres

We propose a dual decomposition and linear program relaxation of the NP -hard minimum cost multicut problem.

MAP inference via Block-Coordinate Frank-Wolfe Algorithm

1 code implementation CVPR 2019 Paul Swoboda, Vladimir Kolmogorov

We present a new proximal bundle method for Maximum-A-Posteriori (MAP) inference in structured energy minimization problems.

Graph Matching

Higher-order Projected Power Iterations for Scalable Multi-Matching

no code implementations26 Nov 2018 Florian Bernard, Johan Thunberg, Paul Swoboda, Christian Theobalt

The matching of multiple objects (e. g. shapes or images) is a fundamental problem in vision and graphics.

Bottleneck potentials in Markov Random Fields

1 code implementation ICCV 2019 Ahmed Abbas, Paul Swoboda

We consider general discrete Markov Random Fields(MRFs) with additional bottleneck potentials which penalize the maximum (instead of the sum) over local potential value taken by the MRF-assignment.

Combinatorial Optimization

Deep Graph Matching via Blackbox Differentiation of Combinatorial Solvers

5 code implementations25 Mar 2020 Michal Rolínek, Paul Swoboda, Dominik Zietlow, Anselm Paulus, Vít Musil, Georg Martius

Building on recent progress at the intersection of combinatorial optimization and deep learning, we propose an end-to-end trainable architecture for deep graph matching that contains unmodified combinatorial solvers.

Combinatorial Optimization Graph Matching

Exact MAP-Inference by Confining Combinatorial Search with LP Relaxation

1 code implementation14 Apr 2020 Stefan Haller, Paul Swoboda, Bogdan Savchynskyy

This property allows to significantly reduce the computational time of the combinatorial solver and therefore solve problems which were out of reach before.

Lifted Disjoint Paths with Application in Multiple Object Tracking

1 code implementation ICML 2020 Andrea Hornakova, Roberto Henschel, Bodo Rosenhahn, Paul Swoboda

We present an extension to the disjoint paths problem in which additional \emph{lifted} edges are introduced to provide path connectivity priors.

Multiple Object Tracking Object

Making Higher Order MOT Scalable: An Efficient Approximate Solver for Lifted Disjoint Paths

2 code implementations ICCV 2021 Andrea Hornakova, Timo Kaiser, Paul Swoboda, Michal Rolinek, Bodo Rosenhahn, Roberto Henschel

We present an efficient approximate message passing solver for the lifted disjoint paths problem (LDP), a natural but NP-hard model for multiple object tracking (MOT).

Multiple Object Tracking

FastDOG: Fast Discrete Optimization on GPU

1 code implementation CVPR 2022 Ahmed Abbas, Paul Swoboda

We present a massively parallel Lagrange decomposition method for solving 0--1 integer linear programs occurring in structured prediction.

Cell Tracking Structured Prediction

LMGP: Lifted Multicut Meets Geometry Projections for Multi-Camera Multi-Object Tracking

no code implementations CVPR 2022 Duy M. H. Nguyen, Roberto Henschel, Bodo Rosenhahn, Daniel Sonntag, Paul Swoboda

Multi-Camera Multi-Object Tracking is currently drawing attention in the computer vision field due to its superior performance in real-world applications such as video surveillance in crowded scenes or in wide spaces.

Multi-Object Tracking Multiple Object Tracking

Structured Prediction Problem Archive

no code implementations4 Feb 2022 Paul Swoboda, Bjoern Andres, Andrea Hornakova, Florian Bernard, Jannik Irmai, Paul Roetzer, Bogdan Savchynskyy, David Stein, Ahmed Abbas

In order to facilitate algorithm development for their numerical solution, we collect in one place a large number of datasets in easy to read formats for a diverse set of problem classes.

Benchmarking Structured Prediction

A Scalable Combinatorial Solver for Elastic Geometrically Consistent 3D Shape Matching

1 code implementation CVPR 2022 Paul Roetzer, Paul Swoboda, Daniel Cremers, Florian Bernard

We present a scalable combinatorial algorithm for globally optimizing over the space of geometrically consistent mappings between 3D shapes.

DOGE-Train: Discrete Optimization on GPU with End-to-end Training

1 code implementation23 May 2022 Ahmed Abbas, Paul Swoboda

Our solver achieves significantly faster performance and better dual objectives than its non-learned version, achieving close to optimal objective values of LP relaxations of very large structured prediction problems and on selected combinatorial ones.

Combinatorial Optimization Structured Prediction

Joint Self-Supervised Image-Volume Representation Learning with Intra-Inter Contrastive Clustering

no code implementations4 Dec 2022 Duy M. H. Nguyen, Hoang Nguyen, Mai T. N. Truong, Tri Cao, Binh T. Nguyen, Nhat Ho, Paul Swoboda, Shadi Albarqouni, Pengtao Xie, Daniel Sonntag

Recent breakthroughs in self-supervised learning (SSL) offer the ability to overcome the lack of labeled training samples by learning feature representations from unlabeled data.

Brain Segmentation Clustering +3

LVM-Med: Learning Large-Scale Self-Supervised Vision Models for Medical Imaging via Second-order Graph Matching

1 code implementation NeurIPS 2023 Duy M. H. Nguyen, Hoang Nguyen, Nghiem T. Diep, Tan N. Pham, Tri Cao, Binh T. Nguyen, Paul Swoboda, Nhat Ho, Shadi Albarqouni, Pengtao Xie, Daniel Sonntag, Mathias Niepert

While pre-trained deep networks on ImageNet and vision-language foundation models trained on web-scale data are prevailing approaches, their effectiveness on medical tasks is limited due to the significant domain shift between natural and medical images.

Contrastive Learning Diabetic Retinopathy Grading +3

A Multidimensional Analysis of Social Biases in Vision Transformers

no code implementations ICCV 2023 Jannik Brinkmann, Paul Swoboda, Christian Bartelt

Therefore, we measure the impact of training data, model architecture, and training objectives on social biases in the learned representations of ViTs.

counterfactual Fairness

Fast Discrete Optimisation for Geometrically Consistent 3D Shape Matching

1 code implementation12 Oct 2023 Paul Roetzer, Ahmed Abbas, Dongliang Cao, Florian Bernard, Paul Swoboda

In this work we propose to combine the advantages of learning-based and combinatorial formalisms for 3D shape matching.

valid

A Mechanistic Analysis of a Transformer Trained on a Symbolic Multi-Step Reasoning Task

no code implementations19 Feb 2024 Jannik Brinkmann, Abhay Sheshadri, Victor Levoso, Paul Swoboda, Christian Bartelt

We anticipate that the motifs we identified in our synthetic setting can provide valuable insights into the broader operating principles of transformers and thus provide a basis for understanding more complex models.

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