Search Results for author: Steffen Wolf

Found 15 papers, 3 papers with code

Joint Semantic Instance Segmentation on Graphs with the Semantic Mutex Watershed

no code implementations ECCV 2020 Steffen Wolf, Yuyan Li, Constantin Pape, Alberto Bailoni, Anna Kreshuk, Fred A. Hamprecht

Semantic instance segmentation is the task of simultaneously partitioning an image into distinct segments while associating each pixel with a class label.

graph partitioning Instance Segmentation +3

Unsupervised Learning of Object-Centric Embeddings for Cell Instance Segmentation in Microscopy Images

1 code implementation ICCV 2023 Steffen Wolf, Manan Lalit, Henry Westmacott, Katie McDole, Jan Funke

Here, we show theoretically that, under assumptions commonly found in microscopy images, OCEs can be learnt through a self-supervised task that predicts the spatial offset between image patches.

Instance Segmentation Semantic Segmentation

ALE: A Simulation-Based Active Learning Evaluation Framework for the Parameter-Driven Comparison of Query Strategies for NLP

1 code implementation1 Aug 2023 Philipp Kohl, Nils Freyer, Yoka Krämer, Henri Werth, Steffen Wolf, Bodo Kraft, Matthias Meinecke, Albert Zündorf

Supervised machine learning and deep learning require a large amount of labeled data, which data scientists obtain in a manual, and time-consuming annotation process.

Active Learning

The onset of molecule-spanning dynamics in a multi-domain protein

no code implementations20 Oct 2021 Benedikt Sohmen, Christian Beck, Tilo Seydel, Ingo Hoffmann, Bianca Hermann, Mark Nüesch, Marco Grimaldo, Frank Schreiber, Steffen Wolf, Felix Roosen-Runge, Thorsten Hugel

Nano- and picosecond dynamics have been assigned to local fluctuations, while slower dynamics have been attributed to larger conformational changes.

Proposal-Free Volumetric Instance Segmentation from Latent Single-Instance Masks

no code implementations10 Sep 2020 Alberto Bailoni, Constantin Pape, Steffen Wolf, Anna Kreshuk, Fred A. Hamprecht

This work introduces a new proposal-free instance segmentation method that builds on single-instance segmentation masks predicted across the entire image in a sliding window style.

Instance Segmentation Segmentation +1

Learning the Arrow of Time for Problems in Reinforcement Learning

no code implementations ICLR 2020 Nasim Rahaman, Steffen Wolf, Anirudh Goyal, Roman Remme, Yoshua Bengio

We humans have an innate understanding of the asymmetric progression of time, which we use to efficiently and safely perceive and manipulate our environment.

reinforcement-learning Reinforcement Learning (RL)

Instance Separation Emerges from Inpainting

no code implementations28 Feb 2020 Steffen Wolf, Fred A. Hamprecht, Jan Funke

Deep neural networks trained to inpaint partially occluded images show a deep understanding of image composition and have even been shown to remove objects from images convincingly.

The Semantic Mutex Watershed for Efficient Bottom-Up Semantic Instance Segmentation

no code implementations29 Dec 2019 Steffen Wolf, Yuyan Li, Constantin Pape, Alberto Bailoni, Anna Kreshuk, Fred A. Hamprecht

Semantic instance segmentation is the task of simultaneously partitioning an image into distinct segments while associating each pixel with a class label.

graph partitioning Instance Segmentation +3

Learning the Arrow of Time

no code implementations2 Jul 2019 Nasim Rahaman, Steffen Wolf, Anirudh Goyal, Roman Remme, Yoshua Bengio

We humans seem to have an innate understanding of the asymmetric progression of time, which we use to efficiently and safely perceive and manipulate our environment.

GASP, a generalized framework for agglomerative clustering of signed graphs and its application to Instance Segmentation

no code implementations CVPR 2022 Alberto Bailoni, Constantin Pape, Nathan Hütsch, Steffen Wolf, Thorsten Beier, Anna Kreshuk, Fred A. Hamprecht

We propose a theoretical framework that generalizes simple and fast algorithms for hierarchical agglomerative clustering to weighted graphs with both attractive and repulsive interactions between the nodes.

Clustering graph partitioning +3

The Mutex Watershed and its Objective: Efficient, Parameter-Free Graph Partitioning

no code implementations25 Apr 2019 Steffen Wolf, Alberto Bailoni, Constantin Pape, Nasim Rahaman, Anna Kreshuk, Ullrich Köthe, Fred A. Hamprecht

Unlike seeded watershed, the algorithm can accommodate not only attractive but also repulsive cues, allowing it to find a previously unspecified number of segments without the need for explicit seeds or a tunable threshold.

Clustering graph partitioning +1

The Mutex Watershed: Efficient, Parameter-Free Image Partitioning

no code implementations ECCV 2018 Steffen Wolf, Constantin Pape, Alberto Bailoni, Nasim Rahaman, Anna Kreshuk, Ullrich Kothe, FredA. Hamprecht

Image partitioning, or segmentation without semantics, is the task of decomposing an image into distinct segments; or equivalently, the task of detecting closed contours in an image.

Clustering graph partitioning +1

LeMoNADe: Learned Motif and Neuronal Assembly Detection in calcium imaging videos

1 code implementation ICLR 2019 Elke Kirschbaum, Manuel Haußmann, Steffen Wolf, Hannah Jakobi, Justus Schneider, Shehabeldin Elzoheiry, Oliver Kann, Daniel Durstewitz, Fred A. Hamprecht

Neuronal assemblies, loosely defined as subsets of neurons with reoccurring spatio-temporally coordinated activation patterns, or "motifs", are thought to be building blocks of neural representations and information processing.

Learned Watershed: End-to-End Learning of Seeded Segmentation

no code implementations ICCV 2017 Steffen Wolf, Lukas Schott, Ullrich Köthe, Fred Hamprecht

Learned boundary maps are known to outperform hand- crafted ones as a basis for the watershed algorithm.

Segmentation

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