Talks by Per Christian Hansen

Talks as Invited Speaker Blue text is a link

• UQIPI24: UQ for Inverse Problems in Imaging, ICMS, Bayes Centre, Edinburgh, Sept. 16-20, 2024: CUQI - A research initiative in Computational Uncertainty Quantification for Inverse problems.

• Big Data Inverse Problems, ICMS, Bayes Centre, Edinburgh, May 20-24, 2024: AB- and BA-GMRES Methods for X-Ray CT with an Unmatched Back Projector. With new unbublished numerical results.

• MATH4UA Seminar, RWTH Aachen University, Feb. 7, 2023: Edge-Preserving Computed Tomography (CT) with Uncertain View Angles - there is also a YouTube video

• PRIMO Workshop 2022, Trieste, Sept. 6-8, 2022: GMRES Methods for Tomographic Reconstruction with an Unmatched Back Projector

• Inverse Problems Seminar, UC Irvine, May 19, 2022: Convergence & Non-Convergence of Algebraic Iterative Reconstruction Methods - there is also a YouTube video

• Seminars on Inverse Problems online seminars, Mersin Univ., Turkey, April 19, 2022: IR Tools: A MATLAB Package with Iterative Regularization Methods for Inverse Problems - there is also a YouTube video

• Numerical Mathods and Scientific Computing, CIRM, Luminy, Nov. 8-12, 2021: GMRES Methods for Tomographic Reconstruction with an Unmatched Back Projector

• One World IMAGINE seminars, Nov. 3, 2021: Convergence and Non-Convergence of Algebraic Iterative Reconstruction Methods - there is also a YouTube video

• ICCSA International Conference on Computational Science and Its Applications, Sept. 13-17, 2021: Stopping Rules for Algebraic Iterative Reconstruction Methods in Computed Tomography

• Second Workshop on Numerical Algebra, Algorithms and Analysis, March 16-17, 2021: Unmatched Projector/Backprojector Pairs and Algebraic Iterative Reconstruction

• IDA Matematik (the mathematics chapter of the Danish Society of Enginees), Sept. 24, 2019: Inverse Problems - New challenges and new methods + the talk Limited-Data CT for Underwater Pipeline Inspection by Nicolai A. B. Riis

• Conference on Modern Challenges in Imaging - In the Footsteps of Allan MacLeod Cormack, August 5–9, 2019: Convergence and Nonconvergence of Algebraic Iterative Reconstruction Methods

• Chemnitz Symposium on Inverse Problems, Sept. 27–28, 2018: Convergence Stories of Algebraic Iterative Reconstruction

• SIAM Conference on Applied Linear Algebra, May 4–8, 2018: Convergence Stories of Algebraic Iterative Reconstruction

• Sixth International Conference on Scale Space and Variational Methods in Computer Vision June 4–8, 2017: ART Performance

• International Workshop on Mathematical Imaging and Emerging Modalities, June 27–30, 2016: ART Performance.

• COST "Extrema" workshop Advanced X-Ray Tomography: Experiment, Modeling, and Algorithms, Feb. 10–14, 2014

• Householder Symposium on Numerical Linear Algebra, Spa, Belgium, June 8–13, 2014: Rotational Image Deblurring with Sparse Matrices

• Oberwolfach Workshop on Mathematics and Algorithms in Tomography, August 10–16, 2014

• UCL Centre for Inverse Problems Opening Meeting, March 18–21, 2012: Repeated Blurring Operations Produce Sharper Images: Image Deblurring with Krylov Subspace Methods

Other Importnat Talks

• ENUMATH 2025, Sept. 1-5, 2025: Insight into Semi-Convergence of Iterative Regularization Methods

• 4th IMA Conference on Inverse Problems from Theory to Application, Bath, Sept. 11-13, 2024: Tomography of the Fast-Ion Velocity Distribution in Tokamak Plasmas with a Physics-Based Prior

• 100 Years of the Radon Transform, March 27-31, 2017: Limited-Data CT for Underwater Pipeline Inspection