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  1. Employees

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Markus Grasmair

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Markus Grasmair

Professor
Department of Mathematical Sciences

markus.grasmair@ntnu.no
Sentralbygg 2, 1052, Gløshaugen
About Publications Teaching

About

Markus Grasmair is professor at the Department of Mathematical Sciences.

Main areas of research

Inverse problems, mathematical methods in image processing, optimisation.

Academic degrees

  • Habilitation in Mathematics at the University of Vienna (2011). Thesis: Nonsmooth variational methods in image processing and inverse problems.
  • PhD in Mathematics at the University of Innsbruck (2006). Thesis: Relaxation of nonlocal integrals with rational integrands.
  • MSc in Mathematics at the University of Innsbruck (2003). Thesis: Norms on root systems (in German).

Work experience

  • 2012-2013 Substitute professor for Scientific Computing at the Catholic University of Eichstätt-Ingolstadt, Germany.
  • 2009-2012 Assistant professor at the University of Vienna, Austria.
  • 2003-2009 Research assistant at the University of Innsbruck, Austria.

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2025

  • Grasmair, Markus; Hildrum, Fredrik. (2025) Subgradient-based Lavrentiev regularisation of monotone ill-posed problems. Inverse Problems
    Academic article

2024

  • Brüggemann, Heinrich; Paulsen, Aksel; Oppedal, Ketil; Grasmair, Markus; Hömberg, Dietmar Josef. (2024) Reliably calibrating X-ray images required for preoperative planning of THA using a device-adapted magnification factor. PLOS ONE
    Academic article

2022

  • Grasmair, Markus; Wøien, Esten Nicolai. (2022) A PDE-Based Method for Shape Registration. SIAM Journal of Imaging Sciences
    Academic article
  • Langberg, Geir Severin Rakh Elvatun; Nygård, Jan Franz; Gogineni, Vinay Chakravarthi; Nygård, Mari; Grasmair, Markus; Naumova, Valeriya. (2022) Towards a data-driven system for personalized cervical cancer risk stratification. Scientific Reports
    Academic article
  • Langberg, Geir Severin Rakh Elvatun; Stapnes, Mikal Solberg; Nygård, Jan Franz; Nygård, Mari; Grasmair, Markus; Naumova, Valeriya. (2022) Matrix factorization for the reconstruction of cervical cancer screening histories and prediction of future screening results. BMC Bioinformatics
    Academic article

2021

  • Grasmair, Markus; Naumova, Valeriya. (2021) Multiparameter Approaches in Image Processing. Springer Nature
    Academic chapter/article/Conference paper
  • Gogineni, Vinay Chakravarthi; Langberg, Geir Severin Rakh Elvatun; Naumova, Valeriya; Nygård, Jan Franz; Nygård, Mari; Grasmair, Markus. (2021) Data-Driven Personalized Cervical Cancer Risk Prediction: A Graph-Perspective. IEEE Signal Processing Society
    Academic chapter/article/Conference paper

2020

  • Grasmair, Markus. (2020) Source Conditions for Non-Quadratic Tikhonov Regularization. Numerical Functional Analysis and Optimization
    Academic article

2018

  • Grasmair, Markus; Klock, Timo; Naumova, Valeriya. (2018) Adaptive multi-penalty regularization based on a generalized Lasso path. Applied and Computational Harmonic Analysis
    Academic article
  • Grunert, Katrin; Holden, Helge; Grasmair, Markus. (2018) On the Equivalence of Eulerian and Lagrangian Variables for the Two-Component Camassa–Holm System. Springer Nature
    Academic chapter/article/Conference paper
  • Grasmair, Markus; Li, Housen; Munk, Axel. (2018) Variational multiscale nonparametric regression: Smooth functions. Annales de l'I.H.P. Probabilites et statistiques
    Academic article

2017

  • Bauer, Martin; Eslitzbichler, Markus; Grasmair, Markus. (2017) Landmark-guided elastic shape analysis of human character motions. Inverse Problems and Imaging
    Academic article

2016

  • Grasmair, Markus; Naumova, Valeriya. (2016) Conditions on optimal support recovery in unmixing problems by means of multi-penalty regularization. Inverse Problems
    Academic article

2015

  • Bauer, Martin; Grasmair, Markus; Kirisits, Clemens. (2015) Optical Flow on Moving Manifolds. SIAM Journal of Imaging Sciences
    Academic article

2014

  • Beretta, Elena; Grasmair, Markus; Muszkieta, Monika; Scherzer, Otmar. (2014) A variational algorithm for the detection of line segments. Inverse Problems and Imaging
    Academic article

2013

  • Bauer, Martin; Fidler, Thomas; Grasmair, Markus. (2013) Local Uniqueness of the Circular Integral Invariant. Inverse Problems and Imaging
    Academic article

2012

  • Frick, Klaus; Grasmair, Markus. (2012) Regularization of linear ill-posed problems by the augmented Lagrangian method and variational inequalities. Inverse Problems
    Academic article

2011

  • Grasmair, Markus; Haltmeier, Markus; Scherzer, Otmar. (2011) Necessary and sufficient conditions for linear convergence of l1-regularization. Communications on Pure and Applied Mathematics
    Academic article

2010

  • Grasmair, Markus; Lenzen, Frank. (2010) Anisotropic total variation filtering. Applied Mathematics and Optimization
    Academic article
  • Grasmair, Markus. (2010) Generalized Bregman distances and convergence rates for non-convex regularization methods. Inverse Problems
    Academic article

2009

  • Scherzer, Otmar; Grasmair, Markus; Grossauer, Harald; Haltmeier, Markus; Lenzen, Frank. (2009) Variational methods in imaging. Springer Applied mathematical sciences (167)
    Academic monograph

2008

  • Grasmair, Markus; Haltmeier, Markus; Scherzer, Otmar. (2008) Sparse regularization with l^q penalty term. Inverse Problems
    Academic article

2007

  • Grasmair, Markus. (2007) The equivalence of the taut string algorithm and BV-regularization. Journal of Mathematical Imaging and Vision
    Academic article

Journal publications

  • Grasmair, Markus; Hildrum, Fredrik. (2025) Subgradient-based Lavrentiev regularisation of monotone ill-posed problems. Inverse Problems
    Academic article
  • Brüggemann, Heinrich; Paulsen, Aksel; Oppedal, Ketil; Grasmair, Markus; Hömberg, Dietmar Josef. (2024) Reliably calibrating X-ray images required for preoperative planning of THA using a device-adapted magnification factor. PLOS ONE
    Academic article
  • Grasmair, Markus; Wøien, Esten Nicolai. (2022) A PDE-Based Method for Shape Registration. SIAM Journal of Imaging Sciences
    Academic article
  • Langberg, Geir Severin Rakh Elvatun; Nygård, Jan Franz; Gogineni, Vinay Chakravarthi; Nygård, Mari; Grasmair, Markus; Naumova, Valeriya. (2022) Towards a data-driven system for personalized cervical cancer risk stratification. Scientific Reports
    Academic article
  • Langberg, Geir Severin Rakh Elvatun; Stapnes, Mikal Solberg; Nygård, Jan Franz; Nygård, Mari; Grasmair, Markus; Naumova, Valeriya. (2022) Matrix factorization for the reconstruction of cervical cancer screening histories and prediction of future screening results. BMC Bioinformatics
    Academic article
  • Grasmair, Markus. (2020) Source Conditions for Non-Quadratic Tikhonov Regularization. Numerical Functional Analysis and Optimization
    Academic article
  • Grasmair, Markus; Klock, Timo; Naumova, Valeriya. (2018) Adaptive multi-penalty regularization based on a generalized Lasso path. Applied and Computational Harmonic Analysis
    Academic article
  • Grasmair, Markus; Li, Housen; Munk, Axel. (2018) Variational multiscale nonparametric regression: Smooth functions. Annales de l'I.H.P. Probabilites et statistiques
    Academic article
  • Bauer, Martin; Eslitzbichler, Markus; Grasmair, Markus. (2017) Landmark-guided elastic shape analysis of human character motions. Inverse Problems and Imaging
    Academic article
  • Grasmair, Markus; Naumova, Valeriya. (2016) Conditions on optimal support recovery in unmixing problems by means of multi-penalty regularization. Inverse Problems
    Academic article
  • Bauer, Martin; Grasmair, Markus; Kirisits, Clemens. (2015) Optical Flow on Moving Manifolds. SIAM Journal of Imaging Sciences
    Academic article
  • Beretta, Elena; Grasmair, Markus; Muszkieta, Monika; Scherzer, Otmar. (2014) A variational algorithm for the detection of line segments. Inverse Problems and Imaging
    Academic article
  • Bauer, Martin; Fidler, Thomas; Grasmair, Markus. (2013) Local Uniqueness of the Circular Integral Invariant. Inverse Problems and Imaging
    Academic article
  • Frick, Klaus; Grasmair, Markus. (2012) Regularization of linear ill-posed problems by the augmented Lagrangian method and variational inequalities. Inverse Problems
    Academic article
  • Grasmair, Markus; Haltmeier, Markus; Scherzer, Otmar. (2011) Necessary and sufficient conditions for linear convergence of l1-regularization. Communications on Pure and Applied Mathematics
    Academic article
  • Grasmair, Markus; Lenzen, Frank. (2010) Anisotropic total variation filtering. Applied Mathematics and Optimization
    Academic article
  • Grasmair, Markus. (2010) Generalized Bregman distances and convergence rates for non-convex regularization methods. Inverse Problems
    Academic article
  • Grasmair, Markus; Haltmeier, Markus; Scherzer, Otmar. (2008) Sparse regularization with l^q penalty term. Inverse Problems
    Academic article
  • Grasmair, Markus. (2007) The equivalence of the taut string algorithm and BV-regularization. Journal of Mathematical Imaging and Vision
    Academic article

Books

  • Scherzer, Otmar; Grasmair, Markus; Grossauer, Harald; Haltmeier, Markus; Lenzen, Frank. (2009) Variational methods in imaging. Springer Applied mathematical sciences (167)
    Academic monograph

Part of book/report

  • Grasmair, Markus; Naumova, Valeriya. (2021) Multiparameter Approaches in Image Processing. Springer Nature
    Academic chapter/article/Conference paper
  • Gogineni, Vinay Chakravarthi; Langberg, Geir Severin Rakh Elvatun; Naumova, Valeriya; Nygård, Jan Franz; Nygård, Mari; Grasmair, Markus. (2021) Data-Driven Personalized Cervical Cancer Risk Prediction: A Graph-Perspective. IEEE Signal Processing Society
    Academic chapter/article/Conference paper
  • Grunert, Katrin; Holden, Helge; Grasmair, Markus. (2018) On the Equivalence of Eulerian and Lagrangian Variables for the Two-Component Camassa–Holm System. Springer Nature
    Academic chapter/article/Conference paper

Teaching

Courses

  • TMA4180 - Optimization 1
  • TMA4145 - Linear Methods
  • TMA4183 - Optimization 2

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