no code implementations • 27 May 2024 • Hastings Greer, Lin Tian, Francois-Xavier Vialard, Roland Kwitt, Raul San Jose Estepar, Marc Niethammer
Image registration estimates spatial correspondences between a pair of images.
1 code implementation • 24 May 2024 • Sebastian Zeng, Florian Graf, Martin Uray, Stefan Huber, Roland Kwitt
We consider the problem of learning the dynamics in the topology of time-evolving point clouds, the prevalent spatiotemporal model for systems exhibiting collective behavior, such as swarms of insects and birds or particles in physics.
1 code implementation • 9 Mar 2024 • Lin Tian, Hastings Greer, Roland Kwitt, Francois-Xavier Vialard, Raul San Jose Estepar, Sylvain Bouix, Richard Rushmore, Marc Niethammer
We therefore propose uniGradICON, a first step toward a foundation model for registration providing 1) great performance \emph{across} multiple datasets which is not feasible for current learning-based registration methods, 2) zero-shot capabilities for new registration tasks suitable for different acquisitions, anatomical regions, and modalities compared to the training dataset, and 3) a strong initialization for finetuning on out-of-distribution registration tasks.
no code implementations • 14 Feb 2024 • Theodore Papamarkou, Tolga Birdal, Michael Bronstein, Gunnar Carlsson, Justin Curry, Yue Gao, Mustafa Hajij, Roland Kwitt, Pietro Liò, Paolo Di Lorenzo, Vasileios Maroulas, Nina Miolane, Farzana Nasrin, Karthikeyan Natesan Ramamurthy, Bastian Rieck, Simone Scardapane, Michael T. Schaub, Petar Veličković, Bei Wang, Yusu Wang, Guo-Wei Wei, Ghada Zamzmi
At the same time, this paper serves as an invitation to the scientific community to actively participate in TDL research to unlock the potential of this emerging field.
1 code implementation • NeurIPS 2023 • Sebastian Zeng, Florian Graf, Roland Kwitt
We consider the problem of variational Bayesian inference in a latent variable model where a (possibly complex) observed stochastic process is governed by the solution of a latent stochastic differential equation (SDE).
1 code implementation • 28 Apr 2023 • Hastings Greer, Lin Tian, Francois-Xavier Vialard, Roland Kwitt, Sylvain Bouix, Raul San Jose Estepar, Richard Rushmore, Marc Niethammer
Inverse consistency is a desirable property for image registration.
1 code implementation • CVPR 2023 • Lin Tian, Hastings Greer, François-Xavier Vialard, Roland Kwitt, Raúl San José Estépar, Richard Jarrett Rushmore, Nikolaos Makris, Sylvain Bouix, Marc Niethammer
We present an approach to learning regular spatial transformations between image pairs in the context of medical image registration.
3 code implementations • 13 Jun 2022 • Lin Tian, Hastings Greer, François-Xavier Vialard, Roland Kwitt, Raúl San José Estépar, Richard Jarrett Rushmore, Nikolaos Makris, Sylvain Bouix, Marc Niethammer
We present an approach to learning regular spatial transformations between image pairs in the context of medical image registration.
1 code implementation • 16 Feb 2022 • Florian Graf, Sebastian Zeng, Bastian Rieck, Marc Niethammer, Roland Kwitt
We study the excess capacity of deep networks in the context of supervised classification.
no code implementations • 30 Jul 2021 • Leonard E. van Dyck, Roland Kwitt, Sebastian J. Denzler, Walter R. Gruber
Deep convolutional neural networks (DCNNs) and the ventral visual pathway share vast architectural and functional similarities in visual challenges such as object recognition.
no code implementations • NeurIPS 2021 • Sebastian Zeng, Florian Graf, Christoph Hofer, Roland Kwitt
The problem of (point) forecasting $ \textit{univariate} $ time series is considered.
2 code implementations • ICCV 2021 • Hastings Greer, Roland Kwitt, Francois-Xavier Vialard, Marc Niethammer
We explore if it is possible to obtain spatial regularity using an inverse consistency loss only and elucidate what explains map regularity in such a context.
no code implementations • 1 May 2021 • Bo Liu, Mandar Dixit, Roland Kwitt, Gang Hua, Nuno Vasconcelos
In the absence of dense pose sampling in image space, these latent space trajectories provide cross-modal guidance for learning.
1 code implementation • 17 Feb 2021 • Florian Graf, Christoph D. Hofer, Marc Niethammer, Roland Kwitt
Minimizing cross-entropy over the softmax scores of a linear map composed with a high-capacity encoder is arguably the most popular choice for training neural networks on supervised learning tasks.
no code implementations • NeurIPS 2020 • François-Xavier Vialard, Roland Kwitt, Susan Wei, Marc Niethammer
Continuous-depth neural networks can be viewed as deep limits of discrete neural networks whose dynamics resemble a discretization of an ordinary differential equation (ODE).
1 code implementation • ICML 2020 • Christoph D. Hofer, Florian Graf, Marc Niethammer, Roland Kwitt
We study regularization in the context of small sample-size learning with over-parameterized neural networks.
1 code implementation • 17 Jul 2019 • Heather D. Couture, Roland Kwitt, J. S. Marron, Melissa Troester, Charles M. Perou, Marc Niethammer
Canonical Correlation Analysis (CCA) is widely used for multimodal data analysis and, more recently, for discriminative tasks such as multi-view learning; however, it makes no use of class labels.
1 code implementation • 21 Jun 2019 • Christoph Hofer, Roland Kwitt, Mandar Dixit, Marc Niethammer
In particular, we control the connectivity of an autoencoder's latent space via a novel type of loss, operating on information from persistent homology.
1 code implementation • ICML 2020 • Christoph D. Hofer, Florian Graf, Bastian Rieck, Marc Niethammer, Roland Kwitt
We propose an approach to learning with graph-structured data in the problem domain of graph classification.
1 code implementation • CVPR 2019 • Marc Niethammer, Roland Kwitt, Francois-Xavier Vialard
Our approach is a radical departure from existing deep learning approaches to image registration by embedding a deep learning model in an optimization-based registration algorithm to parameterize and data-adapt the registration model itself.
Ranked #1 on Diffeomorphic Medical Image Registration on CUMC12
no code implementations • 7 Mar 2018 • Natalie Stanley, Thomas Bonacci, Roland Kwitt, Marc Niethammer, Peter J. Mucha
While there are recent examples in the literature that combine connectivity and attribute information to inform community detection, our model is the first augmented stochastic block model to handle multiple continuous attributes.
no code implementations • CVPR 2018 • Bo Liu, Xudong Wang, Mandar Dixit, Roland Kwitt, Nuno Vasconcelos
A new architecture, denoted the FeATure TransfEr Network (FATTEN), is proposed for the modeling of feature trajectories induced by variations of object pose.
1 code implementation • 15 Nov 2017 • Xu Han, Roland Kwitt, Stephen Aylward, Spyridon Bakas, Bjoern Menze, Alexander Asturias, Paul Vespa, John Van Horn, Marc Niethammer
Extracting the brain from images with strong pathologies, for example, the presence of a tumor or of a traumatic brain injury, is challenging.
no code implementations • 15 Nov 2017 • Zhipeng Ding, Greg Fleishman, Xiao Yang, Paul Thompson, Roland Kwitt, Marc Niethammer
Deformable image registration and regression are important tasks in medical image analysis.
4 code implementations • NeurIPS 2017 • Christoph Hofer, Roland Kwitt, Marc Niethammer, Andreas Uhl
Inferring topological and geometrical information from data can offer an alternative perspective on machine learning problems.
1 code implementation • CVPR 2017 • Mandar Dixit, Roland Kwitt, Marc Niethammer, Nuno Vasconcelos
We implement our approach as a deep encoder-decoder architecture that learns the synthesis function in an end-to-end manner.
1 code implementation • 13 Jun 2017 • Natalie Stanley, Roland Kwitt, Marc Niethammer, Peter J. Mucha
Community detection is a commonly used technique for identifying groups in a network based on similarities in connectivity patterns.
Social and Information Networks Physics and Society
1 code implementation • 31 Mar 2017 • Xiao Yang, Roland Kwitt, Martin Styner, Marc Niethammer
A deep encoder-decoder network is used as the prediction model.
no code implementations • 31 Mar 2017 • Xu Han, Xiao Yang, Stephen Aylward, Roland Kwitt, Marc Niethammer
Registration involving one or more images containing pathologies is challenging, as standard image similarity measures and spatial transforms cannot account for common changes due to pathologies.
no code implementations • 31 Mar 2017 • Xiao Yang, Roland Kwitt, Martin Styner, Marc Niethammer
We introduce a deep encoder-decoder architecture for image deformation prediction from multimodal images.
1 code implementation • 8 Dec 2016 • Mandar Dixit, Roland Kwitt, Marc Niethammer, Nuno Vasconcelos
We implement our approach as a deep encoder-decoder architecture that learns the synthesis function in an end-to-end manner.
no code implementations • 8 Jul 2016 • Xiao Yang, Roland Kwitt, Marc Niethammer
We present a method to predict image deformations based on patch-wise image appearance.
no code implementations • CVPR 2016 • Roland Kwitt, Sebastian Hegenbart, Marc Niethammer
In particular, we leverage a recently introduced dataset with fine-grain annotations to estimate feature trajectories for a collection of transient attributes and then show how these trajectories can be transferred to new image representations.
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 • 14 May 2015 • Yi Hong, Nikhil Singh, Roland Kwitt, Nuno Vasconcelos, Marc Niethammer
We then specialize this idea to the Grassmann manifold and demonstrate that it yields a simple, extensible and easy-to-implement solution to the parametric regression problem.
no code implementations • 30 Apr 2015 • Sebastian Hegenbart, Roland Kwitt, Andreas Uhl
The 39th annual workshop of the Austrian Association for Pattern Recognition (OAGM/AAPR) provides a platform for presentation and discussion of research progress as well as research projects within the OAGM/AAPR community.
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.