Handbook of Variational Methods for Nonlinear Geometric Data

Prof. Dr. Philipp Grohs was born on July 7, 1981 in Austria and has been a professor at the University of Vienna since 2016. In 2019, he also became a group leader at RICAM, the Johann Radon Institute for Computational and Applied Mathematics in the Austrian Academy of Sciences in Linz. After studying, completing his doctorate and working as a postdoc at TU Wien, Grohs transferred to King Abdullah University of Science and Technology in Thuwal, Saudi Arabia, and then to ETH Zürich, Switzerland, where he was an assistant professor from 2011 to 2016. Grohs was awarded the ETH Zurich Latsis Prize in 2014. In 2020 he was selected for an Alexander-von-Humboldt-Professorship award, the highest endowed research prize in Germany. He is a member of the board of the Austrian Mathematical Society, a member of IEEE Information Theory Society and on the editorial boards of various specialist journals.Martin Holler was born on May 21, 1986 in Austria. He received his MSc (2010) and his PhD (2013) with a "promotio sub auspiciis praesidentis rei publicae" in Mathematics from the University of Graz. After research stays at the University of Cambridge, UK, and the Ecole Polytechnique, Paris, he currently holds a University Assistant position at the Institute of Mathematics and Scientific Computing of the University of Graz. His research interests include inverse problems and mathematical image processing, in particular the development and analysis of mathematical models in this context as well as applications in biomedical imaging, image compression and beyond.Andreas Weinmann was born on July 18, 1979 in Augsburg, Germany. He studied mathematics with minor in computer science at TU Munich, and received his Diploma degree in mathematics and computer science from TU Munich in 2006 (with highest distinction). He was assistant at the Institute of Geometry, TU Graz. He obtained his Ph.D. degree from TU Graz in 2010 (with highest distinction). Thenhe worked as a researcher at Helmholtz Center Munich and TU Munich. Since 2015 he holds a position as Professor of Mathematics and Image Processing at Hochschule Darmstadt. He received his habilitation in 2018 from University Osnabruck. Andreas’s research interests include applied analysis, in particular variational methods, nonlinear geometric data spaces, inverse problems as well as computer vision, signal and image processing and imaging applications, in particular Magnetic Particle Imaging.

• 1. Geometric Finite Elements.- 2. Non-smooth variational regularization for processing manifold-valued data.- 3. Lifting methods for manifold-valued variational problems.- 4. Geometric subdivision and multiscale transforms.- 5. Variational Methods for Discrete Geometric Functionals.- 6 Variational methods for fluid-structure interactions.- 7. Convex lifting-type methods for curvature regularization.- 8. Assignment Flows.- 9. Geometric methods on low-rank matrix and tensor manifolds.- 10. Statistical Methods Generalizing Principal Component Analysis to Non-Euclidean Spaces.- 11. Advances in Geometric Statistics for manifold dimension reduction.- 12. Deep Variational Inference.­­- 13. Shape Analysis of Functional Data.- 14. Statistical Analysis of Trajectories of Multi-Modality Data.- 15. Geometric Metrics for Topological Representations.- 16. On Geometric Invariants, Learning, and Recognition of Shapes and Forms.- 17. Sub-Riemannian Methods in Shape Analysis.- 18. First order methods for optimization on Riemannian manifolds.- 19. Recent Advances in Stochastic Riemannian Optimization.- 20. Averaging symmetric positive-definite matrices.- 21. Rolling Maps and Nonlinear Data.- 22. Manifold-valued Data in Medical Imaging Applications.- 23. The Riemannian and Affine Geometry of Facial Expression and Action Recognition.- 24. Biomedical Applications of Geometric Functional Data Analysis.