Search Results for author: Stefan Heldmann

Found 11 papers, 3 papers with code

The Brain Tumor Sequence Registration (BraTS-Reg) Challenge: Establishing Correspondence Between Pre-Operative and Follow-up MRI Scans of Diffuse Glioma Patients

no code implementations13 Dec 2021 Bhakti Baheti, Satrajit Chakrabarty, Hamed Akbari, Michel Bilello, Benedikt Wiestler, Julian Schwarting, Evan Calabrese, Jeffrey Rudie, Syed Abidi, Mina Mousa, Javier Villanueva-Meyer, Brandon K. K. Fields, Florian Kofler, Russell Takeshi Shinohara, Juan Eugenio Iglesias, Tony C. W. Mok, Albert C. S. Chung, Marek Wodzinski, Artur Jurgas, Niccolo Marini, Manfredo Atzori, Henning Muller, Christoph Grobroehmer, Hanna Siebert, Lasse Hansen, Mattias P. Heinrich, Luca Canalini, Jan Klein, Annika Gerken, Stefan Heldmann, Alessa Hering, Horst K. Hahn, Mingyuan Meng, Lei Bi, Dagan Feng, Jinman Kim, Ramy A. Zeineldin, Mohamed E. Karar, Franziska Mathis-Ullrich, Oliver Burgert, Javid Abderezaei, Aymeric Pionteck, Agamdeep Chopra, Mehmet Kurt, Kewei Yan, Yonghong Yan, Zhe Tang, Jianqiang Ma, Sahar Almahfouz Nasser, Nikhil Cherian Kurian, Mohit Meena, Saqib Shamsi, Amit Sethi, Nicholas J. Tustison, Brian B. Avants, Philip Cook, James C. Gee, Lin Tian, Hastings Greer, Marc Niethammer, Andrew Hoopes, Malte Hoffmann, Adrian V. Dalca, Stergios Christodoulidis, Theo Estiene, Maria Vakalopoulou, Nikos Paragios, Daniel S. Marcus, Christos Davatzikos, Aristeidis Sotiras, Bjoern Menze, Spyridon Bakas, Diana Waldmannstetter

Registration of longitudinal brain MRI scans containing pathologies is challenging due to dramatic changes in tissue appearance.

Descriptive Image Registration +1

Comparison of Consecutive and Re-stained Sections for Image Registration in Histopathology

1 code implementation24 Jun 2021 Johannes Lotz, Nick Weiss, Jeroen van der Laak, Stefan Heldmann

Between re-stained sections, the median registration error is 2. 3 {\mu}m and 0. 9 {\mu}m in the two subsets of the HyReCo dataset.

Image Registration

Deformable Groupwise Image Registration using Low-Rank and Sparse Decomposition

1 code implementation10 Jan 2020 Roland Haase, Stefan Heldmann, Jan Lellmann

Low-rank and sparse decompositions and robust PCA (RPCA) are highly successful techniques in image processing and have recently found use in groupwise image registration.

Image Registration

mlVIRNET: Multilevel Variational Image Registration Network

no code implementations22 Sep 2019 Alessa Hering, Bram van Ginneken, Stefan Heldmann

We show that the use of a deep learning multilevel approach leads to significantly better registration results.

Image Registration

Variational Registration of Multiple Images with the SVD based SqN Distance Measure

no code implementations23 Jul 2019 Kai Brehmer, Hari Om Aggrawal, Stefan Heldmann, Jan Modersitzki

Our results indicate that the SqN approach is in fact a suitable distance measure for image registration.

Image Registration

Robust, fast and accurate: a 3-step method for automatic histological image registration

no code implementations28 Mar 2019 Johannes Lotz, Nick Weiss, Stefan Heldmann

We present a 3-step registration pipeline for differently stained histological serial sections that consists of 1) a robust pre-alignment, 2) a parametric registration computed on coarse resolution images, and 3) an accurate nonlinear registration.

Image Registration

Enhancing Label-Driven Deep Deformable Image Registration with Local Distance Metrics for State-of-the-Art Cardiac Motion Tracking

no code implementations5 Dec 2018 Alessa Hering, Sven Kuckertz, Stefan Heldmann, Mattias Heinrich

While deep learning has achieved significant advances in accuracy for medical image segmentation, its benefits for deformable image registration have so far remained limited to reduced computation times.

Image Registration Image Segmentation +3

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