2023
Esfandiar Navayazdani, Felix Ambellan, Martin Hanik, Christoph von Tycowicz	Sasaki Metric for Spline Models of Manifold-Valued Trajectories	Computer Aided Geometric Design, Vol.104, 2023	BibTeX arXiv DOI
2022
Julius Mayer, Daniel Baum, Felix Ambellan, Christoph von Tycowicz	A Soft-Correspondence Approach to Shape-based Disease Grading with Graph Convolutional Networks	Proceedings of Machine Learning Research, pp. 85-95, Vol.194, 2022	PDF BibTeX
Korbinian Glatzeder, Igor Komnik, Felix Ambellan, Stefan Zachow, Wolfgang Potthast	Dynamic pressure analysis of novel interpositional knee spacer implants in 3D-printed human knee models	Scientific Reports, Vol.12, 2022	PDF BibTeX DOI
Felix Ambellan	Efficient Riemannian Statistical Shape Analysis with Applications in Disease Assessment	Doctoral thesis, Freie Universität Berlin, Christof Schütte, Christoph von Tycowicz (Advisors), 2022	PDF BibTeX DOI URN
Adele Myers, Saiteja Utpala, Shubham Talbar, Sophia Sanborn, Christian Shewmake, Claire Donnat, Johan Mathe, Umberto Lupo, Rishi Sonthalia, Xinyue Cui, Tom Szwagier, Arthur Pignet, Andri Bergsson, Søren Hauberg, Dmitriy Nielsen, Stefan Sommer, David Klindt, Erik Hermansen, Melvin Vaupel, Benjamin Dunn, Jeffrey Xiong, Noga Aharony, Itsik Pe’er, Felix Ambellan, Martin Hanik, Esfandiar Navayazdani, Christoph von Tycowicz, Nina Miolane	ICLR 2022 Challenge for Computational Geomerty & Topology: Design and Results	Proceedings of Topology, Algebra, and Geometry in Learning, pp. 269-276, Vol.196, Proceedings of Machine Learning Research, 2022	PDF BibTeX arXiv
David Lüdke, Tamaz Amiranashvili, Felix Ambellan, Ivan Ezhov, Bjoern Menze, Stefan Zachow	Landmark-free Statistical Shape Modeling via Neural Flow Deformations	Medical Image Computing and Computer Assisted Intervention - MICCAI 2022, Vol.13432, Lecture Notes in Computer Science, 2022	BibTeX DOI arXiv
Esfandiar Nava-Yazdani, Martin Hanik, Felix Ambellan, Christoph von Tycowicz	On Gradient Formulas in an Algorithm for the Logarithm of the Sasaki Metric	ZIB-Report 22-12	PDF BibTeX URN
Ariel Caputo, Marco Emporio, Andrea Giachetti, Marco Cristani, Guido Borghi, Andrea D'Eusanio, Minh-Quan Le, Hai-Dang Nguyen, Minh-Triet Tran, Felix Ambellan, Martin Hanik, Esfandiar Navayazdani, Christoph von Tycowicz	SHREC 2022 Track on Online Detection of Heterogeneous Gestures	Computers and Graphics, Vol.107, pp. 241-251, 2022	BibTeX arXiv DOI
2021
Jessica Hembus, Felix Ambellan, Stefan Zachow, Rainer Bader	Establishment of a rolling-sliding test bench to analyze abrasive wear propagation of different bearing materials for knee implants	Applied Sciences, 11(4), 2021	BibTeX DOI
Felix Ambellan, Stefan Zachow, Christoph von Tycowicz	Geodesic B-Score for Improved Assessment of Knee Osteoarthritis	Proc. Information Processing in Medical Imaging (IPMI), pp. 177-188, Lecture Notes in Computer Science, 2021 (preprint available as ZIB-Report 21-09)	PDF (ZIB-Report) BibTeX arXiv DOI
Felix Ambellan, Martin Hanik, Christoph von Tycowicz	Morphomatics: Geometric morphometrics in non-Euclidean shape spaces	2021	BibTeX DOI
Felix Ambellan, Stefan Zachow, Christoph von Tycowicz	Rigid Motion Invariant Statistical Shape Modeling based on Discrete Fundamental Forms	Medical Image Analysis, Vol.73, 2021	BibTeX DOI arXiv
Alexander Tack, Felix Ambellan, Stefan Zachow	Towards novel osteoarthritis biomarkers: Multi-criteria evaluation of 46,996 segmented knee MRI data from the Osteoarthritis Initiative	PLOS One, 16(10), 2021	BibTeX DOI
Alexander Tack, Felix Ambellan, Stefan Zachow	Towards novel osteoarthritis biomarkers: Multi-criteria evaluation of 46,996 segmented knee MRI data from the Osteoarthritis Initiative (Supplementary Material)	PLOS One, 16(10), 2021	BibTeX DOI
Anjany Sekuboyina, Malek E. Husseini, Amirhossein Bayat, Maximilian Löffler, Hans Liebl, Hongwei Li, Giles Tetteh, Jan Kukačka, Christian Payer, Darko Štern, Martin Urschler, Maodong Chen, Dalong Cheng, Nikolas Lessmann, Yujin Hu, Tianfu Wang, Dong Yang, Daguang Xu, Felix Ambellan, Tamaz Amiranashvili, Moritz Ehlke, Hans Lamecker, Sebastian Lehnert, Marilia Lirio, Nicolás Pérez de Olaguer, Heiko Ramm, Manish Sahu, Alexander Tack, Stefan Zachow, Tao Jiang, Xinjun Ma, Christoph Angerman, Xin Wang, Kevin Brown, Alexandre Kirszenberg, Élodie Puybareau, Di Chen, Yiwei Bai, Brandon H. Rapazzo, Timyoas Yeah, Amber Zhang, Shangliang Xu, Feng Hou, Zhiqiang He, Chan Zeng, Zheng Xiangshang, Xu Liming, Tucker J. Netherton, Raymond P. Mumme, Laurence E. Court, Zixun Huang, Chenhang He, Li-Wen Wang, Sai Ho Ling, Lê Duy Huynh, Nicolas Boutry, Roman Jakubicek, Jiri Chmelik, Supriti Mulay, Mohanasankar Sivaprakasam, Johannes C. Paetzold, Suprosanna Shit, Ivan Ezhov, Benedikt Wiestler, Ben Glocker, Alexander Valentinitsch, Markus Rempfler, Björn H. Menze, Jan S. Kirschke	VerSe: A Vertebrae labelling and segmentation benchmark for multi-detector CT images	Medical Image Analysis, Vol.73, 2021	BibTeX DOI
2020
Anjany Sekuboyina, Amirhossein Bayat, Malek E. Husseini, Maximilian Löffler, Hongwei Li, Giles Tetteh, Jan Kukačka, Christian Payer, Darko Štern, Martin Urschler, Maodong Chen, Dalong Cheng, Nikolas Lessmann, Yujin Hu, Tianfu Wang, Dong Yang, Daguang Xu, Felix Ambellan, Tamaz Amiranashvili, Moritz Ehlke, Hans Lamecker, Sebastian Lehnert, Marilia Lirio, Nicolás Pérez de Olaguer, Heiko Ramm, Manish Sahu, Alexander Tack, Stefan Zachow, Tao Jiang, Xinjun Ma, Christoph Angerman, Xin Wang, Qingyue Wei, Kevin Brown, Matthias Wolf, Alexandre Kirszenberg, Élodie Puybareau, Alexander Valentinitsch, Markus Rempfler, Björn H. Menze, Jan S. Kirschke	VerSe: A Vertebrae Labelling and Segmentation Benchmark for Multi-detector CT Images	arXiv, 2020	PDF BibTeX arXiv
2019
Felix Ambellan, Stefan Zachow, Christoph von Tycowicz	A Surface-Theoretic Approach for Statistical Shape Modeling	Proc. Medical Image Computing and Computer Assisted Intervention (MICCAI), Part IV, pp. 21-29, Vol.11767, Lecture Notes in Computer Science, 2019 (preprint available as ZIB-Report 19-20)	PDF (ZIB-Report) BibTeX DOI
Felix Ambellan, Stefan Zachow, Christoph von Tycowicz	An as-invariant-as-possible GL+(3)-based Statistical Shape Model	Proc. 7th MICCAI workshop on Mathematical Foundations of Computational Anatomy (MFCA), pp. 219-228, Vol.11846, Lecture Notes in Computer Science, 2019 (preprint available as ZIB-Report 19-46)	PDF (ZIB-Report) BibTeX DOI
Henok Hagos Gidey	Automated Hip Knee Ankle Angle Determination using Convolutional Neural Networks	Master's thesis, Otto-von-Guericke-Universität Magdeburg, Felix Ambellan, Alexander Tack, Stefan Zachow (Advisors), 2019	PDF BibTeX URN
Felix Ambellan, Alexander Tack, Moritz Ehlke, Stefan Zachow	Automated Segmentation of Knee Bone and Cartilage combining Statistical Shape Knowledge and Convolutional Neural Networks: Data from the Osteoarthritis Initiative	Medical Image Analysis, 52(2), pp. 109-118, 2019 (preprint available as ZIB-Report 19-06)	PDF (ZIB-Report) BibTeX DOI
Felix Ambellan, Alexander Tack, Moritz Ehlke, Stefan Zachow	Automated Segmentation of Knee Bone and Cartilage combining Statistical Shape Knowledge and Convolutional Neural Networks: Data from the Osteoarthritis Initiative (Supplementary Material)	Medical Image Analysis, 52(2), pp. 109-118, 2019 (OAI-ZIB dataset)	BibTeX DOI
Mona Prendke	Comparison of 2D and 3D CNNs for Classification of Knee MRI	Bachelor's thesis, Freie Universität Berlin, Alexander Tack, Felix Ambellan (Advisors), 2019	PDF BibTeX URN
Felix Ambellan, Hans Lamecker, Christoph von Tycowicz, Stefan Zachow	Statistical Shape Models - Understanding and Mastering Variation in Anatomy	Biomedical Visualisation, Paul M. Rea (Ed.), Springer Nature Switzerland AG, 1, pp. 67-84, 2019, ISBN: 978-3-030-19384-3, ISBN: 978-3-030-19385-0 (preprint available as ZIB-Report 19-13)	PDF (ZIB-Report) BibTeX DOI
2018
Christoph von Tycowicz, Felix Ambellan, Anirban Mukhopadhyay, Stefan Zachow	An Efficient Riemannian Statistical Shape Model using Differential Coordinates	Medical Image Analysis, 43(1), pp. 1-9, 2018 (preprint available as ZIB-Report 16-69)	PDF (ZIB-Report) BibTeX DOI
Felix Ambellan, Alexander Tack, Moritz Ehlke, Stefan Zachow	Automated Segmentation of Knee Bone and Cartilage combining Statistical Shape Knowledge and Convolutional Neural Networks: Data from the Osteoarthritis Initiative	Medical Imaging with Deep Learning, 2018	PDF BibTeX
2017
Robert Joachimsky, Felix Ambellan, Stefan Zachow	Computerassistierte Auswahl und Platzierung von interpositionalen Spacern zur Behandlung früher Gonarthrose	Proceedings of the Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie (CURAC), pp. 106-111, Vol.16, 2017 (preprint available as ZIB-Report 17-72)	PDF (ZIB-Report) BibTeX URN
Felix Ambellan, Alexander Tack, Dave Wilson, Carolyn Anglin, Hans Lamecker, Stefan Zachow	Evaluating two methods for Geometry Reconstruction from Sparse Surgical Navigation Data	Proceedings of the Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie (CURAC), pp. 24-30, Vol.16, 2017 (preprint available as ZIB-Report 17-71)	PDF (ZIB-Report) BibTeX URN
David Wilson, Carolyn Anglin, Felix Ambellan, Carl Martin Grewe, Alexander Tack, Hans Lamecker, Michael Dunbar, Stefan Zachow	Validation of three-dimensional models of the distal femur created from surgical navigation point cloud data for intraoperative and postoperative analysis of total knee arthroplasty	International Journal of Computer Assisted Radiology and Surgery, 12(12), pp. 2097-2105, 2017	PDF BibTeX DOI