default search action
Per Christian Hansen
Person information
- affiliation: Technical University of Denmark, Department of Applied Mathematics and Computer Science
Refine list
refinements active!
zoomed in on ?? of ?? records
view refined list in
export refined list as
showing all ?? records
2020 – today
- 2023
- [j64]Babak Maboudi Afkham
, Yiqiu Dong
Uncertainty Quantification of Inclusion Boundaries in the Context of X-Ray Tomography. SIAM/ASA J. Uncertain. Quantification 11(1): 31-61 (2023) - [j63]Felipe Uribe
Horseshoe Priors for Edge-Preserving Linear Bayesian Inversion. SIAM J. Sci. Comput. 45(3): 337-365 (2023) - [i12]Babak Maboudi Afkham
Inferring Features with Uncertain Roughness. CoRR abs/2305.04608 (2023) - [i11]Nicolai André Brogaard Riis, Amal Mohammed A. Alghamdi, Felipe Uribe, Silja L. Christensen, Babak Maboudi Afkham, Per Christian Hansen, Jakob Sauer Jørgensen:
CUQIpy - Part I: computational uncertainty quantification for inverse problems in Python. CoRR abs/2305.16949 (2023) - [i10]Amal Mohammed A. Alghamdi, Nicolai André Brogaard Riis, Babak Maboudi Afkham, Felipe Uribe, Silja L. Christensen, Per Christian Hansen, Jakob Sauer Jørgensen:
CUQIpy - Part II: computational uncertainty quantification for PDE-based inverse problems in Python. CoRR abs/2305.16951 (2023) - 2022
- [j62]Per Christian Hansen
GMRES methods for tomographic reconstruction with an unmatched back projector. J. Comput. Appl. Math. 413: 114352 (2022) - [j61]Felipe Uribe
A Hybrid Gibbs Sampler for Edge-Preserving Tomographic Reconstruction with Uncertain View Angles. SIAM/ASA J. Uncertain. Quantification 10(1): 1293-1320 (2022) - 2021
- [j60]Nicolai André Brogaard Riis
Computed Tomography Reconstruction with Uncertain View Angles by Iteratively Updated Model Discrepancy. J. Math. Imaging Vis. 63(2): 133-143 (2021) - [j59]Bart S. van Lith
A Twin Error Gauge for Kaczmarz's Iterations. SIAM J. Sci. Comput. 43(5): S173-S199 (2021) - [c14]Per Christian Hansen
Stopping Rules for Algebraic Iterative Reconstruction Methods in Computed Tomography. ICCSA (Workshops) 2021: 60-70 - [i9]Per Christian Hansen, Jakob Sauer Jørgensen, Peter Winkel Rasmussen:
Stopping Rules for Algebraic Iterative Reconstruction Methods in Computed Tomography. CoRR abs/2106.10053 (2021) - [i8]Babak Maboudi Afkham, Yiqiu Dong, Per Christian Hansen:
Uncertainty Quantification of Inclusion Boundaries in the Context of X-ray Tomography. CoRR abs/2107.06607 (2021) - [i7]Per Christian Hansen, Ken Hayami, Keiichi Morikuni:
GMRES Methods for Tomographic Reconstruction with an Unmatched Back Projector. CoRR abs/2110.01481 (2021) - 2020
- [j58]Johnathan M. Bardsley, Per Christian Hansen
MCMC Algorithms for Computational UQ of Nonnegativity Constrained Linear Inverse Problems. SIAM J. Sci. Comput. 42(2): A1269-A1288 (2020)
2010 – 2019
- 2019
- [j57]Silvia Gazzola
IR Tools: a MATLAB package of iterative regularization methods and large-scale test problems. Numer. Algorithms 81(3): 773-811 (2019) - [j56]Per Christian Hansen
Hybrid enriched bidiagonalization for discrete ill-posed problems. Numer. Linear Algebra Appl. 26(3) (2019) - [j55]Yiqiu Dong
Fixing Nonconvergence of Algebraic Iterative Reconstruction with an Unmatched Backprojector. SIAM J. Sci. Comput. 41(3): A1822-A1839 (2019) - [i6]Bart S. van Lith, Per Christian Hansen, Michiel E. Hochstenbach:
A twin error gauge for Kaczmarz's iterations. CoRR abs/1906.07470 (2019) - 2018
- [j54]Per Christian Hansen
AIR Tools II: algebraic iterative reconstruction methods, improved implementation. Numer. Algorithms 79(1): 107-137 (2018) - [j53]Tommy Elfving, Per Christian Hansen
Unmatched Projector/Backprojector Pairs: Perturbation and Convergence Analysis. SIAM J. Sci. Comput. 40(1) (2018) - [j52]Yiqiu Dong
Joint CT Reconstruction and Segmentation With Discriminative Dictionary Learning. IEEE Trans. Computational Imaging 4(4): 528-536 (2018) - 2017
- [j51]Sara Soltani
Tomographic image reconstruction using training images. J. Comput. Appl. Math. 313: 243-258 (2017) - [j50]Tommy Elfving, Per Christian Hansen
Convergence analysis for column-action methods in image reconstruction. Numer. Algorithms 74(3): 905-924 (2017) - [j49]Tommy Elfving, Per Christian Hansen
Erratum to: Convergence analysis for column-action methods in image reconstruction. Numer. Algorithms 74(3): 925 (2017) - [c13]Hans Martin Kjer
User-Friendly Simultaneous Tomographic Reconstruction and Segmentation with Class Priors. SSVM 2017: 260-270 - 2015
- [i5]Sara Soltani, Martin S. Andersen, Per Christian Hansen:
Tomographic Image Reconstruction using Dictionary Priors. CoRR abs/1503.01993 (2015) - [i4]Rasmus Dalgas Rasmussen, Jakob Sauer Jørgensen, Henning Friis Poulsen, Per Christian Hansen:
Comparison of Reconstruction Methods for Free-Space Propagation Phase-Contrast Tomography. CoRR abs/1505.02740 (2015) - [i3]Sara Soltani, Misha Elena Kilmer, Per Christian Hansen:
A Tensor-Based Dictionary Learning Approach to Tomographic Image Reconstruction. CoRR abs/1506.04954 (2015) - 2014
- [j48]Martin S. Andersen
Generalized row-action methods for tomographic imaging. Numer. Algorithms 67(1): 121-144 (2014) - [j47]Hans Henrik B. Sørensen, Per Christian Hansen
Multicore Performance of Block Algebraic Iterative Reconstruction Methods. SIAM J. Sci. Comput. 36(5) (2014) - 2013
- [j46]Per Christian Hansen
Oblique projections and standard-form transformations for discrete inverse problems. Numer. Linear Algebra Appl. 20(2): 250-258 (2013) - 2012
- [j45]Per Christian Hansen
AIR Tools - A MATLAB package of algebraic iterative reconstruction methods. J. Comput. Appl. Math. 236(8): 2167-2178 (2012) - [j44]Tommy Elfving, Per Christian Hansen
Semiconvergence and Relaxation Parameters for Projected SIRT Algorithms. SIAM J. Sci. Comput. 34(4) (2012) - 2011
- [i2]Tobias Lindstrøm Jensen, Jakob Heide Jørgensen, Per Christian Hansen, Søren Holdt Jensen:
Implementation of an Optimal First-Order Method for Strongly Convex Total Variation Regularization. CoRR abs/1105.3723 (2011) - [i1]Jakob Heide Jørgensen, Tobias Lindstrøm Jensen, Per Christian Hansen, Søren Holdt Jensen, Emil Y. Sidky, Xiaochuan Pan:
Accelerated gradient methods for total-variation-based CT image reconstruction. CoRR abs/1105.4002 (2011) - 2010
- [j43]Joachim Dahl, Per Christian Hansen
Algorithms and software for total variation image reconstruction via first-order methods. Numer. Algorithms 53(1): 67-92 (2010)
2000 – 2009
- 2009
- [j42]Dan Erik Petersen, Song Li, Kurt Stokbro, Hans Henrik B. Sørensen, Per Christian Hansen
A hybrid method for the parallel computation of Green's functions. J. Comput. Phys. 228(14): 5020-5039 (2009) - [j41]Per Christian Hansen
Reconstruction of Single-Grain Orientation Distribution Functions for Crystalline Materials. SIAM J. Imaging Sci. 2(2): 593-613 (2009) - 2008
- [j40]Dan Erik Petersen, Hans Henrik B. Sørensen, Per Christian Hansen
Block tridiagonal matrix inversion and fast transmission calculations. J. Comput. Phys. 227(6): 3174-3190 (2008) - [j39]Per Christian Hansen, James G. Nagy, Dianne P. O'Leary, Rodney Miller:
Deblurring Images: Matrices, Spectra and Filtering. J. Electronic Imaging 17(1): 019901 (2008) - 2007
- [j38]Per Christian Hansen
Subspace-Based Noise Reduction for Speech Signals via Diagonal and Triangular Matrix Decompositions: Survey and Analysis. EURASIP J. Adv. Signal Process. 2007 (2007) - [j37]Per Christian Hansen
Regularization Tools version 4.0 for Matlab 7.3. Numer. Algorithms 46(2): 189-194 (2007) - [j36]Misha Elena Kilmer, Per Christian Hansen
A Projection-Based Approach to General-Form Tikhonov Regularization. SIAM J. Sci. Comput. 29(1): 315-330 (2007) - [c12]Joachim Dahl, Søren Holdt Jensen, Per Christian Hansen
A Convex Programming Approach to Anisotropic Smoothing. ICIP (2) 2007: 101-104 - 2006
- [j35]Per Christian Hansen, Toke Koldborg Jensen:
Smoothing-Norm Preconditioning for Regularizing Minimum-Residual Methods. SIAM J. Matrix Anal. Appl. 29(1): 1-14 (2006) - [c11]Per Christian Hansen, Toke Koldborg Jensen:
Large-Scale Methods in Image Deblurring. PARA 2006: 24-35 - 2005
- [j34]Ricardo D. Fierro, Per Christian Hansen
UTV Expansion Pack: Special-purpose rank-revealing algorithms. Numer. Algorithms 40(1): 47-66 (2005) - [j33]Per Christian Hansen
Prewhitening for rank-deficient noise in subspace methods for noise reduction. IEEE Trans. Signal Process. 53(10): 3718-3726 (2005) - 2002
- [j32]Per Christian Hansen
Deconvolution and Regularization with Toeplitz Matrices. Numer. Algorithms 29(4): 323-378 (2002) - 2001
- [j31]Per Christian Hansen, Plamen Y. Yalamov:
Computing Symmetric Rank-Revealing Decompositions via Triangular Factorization. SIAM J. Matrix Anal. Appl. 23(2): 443-458 (2001) - 2000
- [j30]Per Christian Hansen, Plamen Y. Yalamov:
Stabilization by Perturbation of a 4n2 Toeplitz Solver. SIAM J. Matrix Anal. Appl. 21(3): 849-866 (2000)
1990 – 1999
- 1999
- [j29]Ricardo D. Fierro, Per Christian Hansen
UTV Tools: Matlab templates for rank-revealing UTV decompositions. Numer. Algorithms 20(2-3): 165-194 (1999) - [j28]Per Christian Hansen:
Regularization Tools Version 3.0 for Matlab 5.2. Numer. Algorithms 20(2-3): 195-196 (1999) - [j27]Gene H. Golub, Per Christian Hansen
Tikhonov Regularization and Total Least Squares. SIAM J. Matrix Anal. Appl. 21(1): 185-194 (1999) - [c10]Peter Søren Kirk Hansen, Per Christian Hansen
Experimental comparison of signal subspace based noise reduction methods. ICASSP 1999: 101-104 - 1998
- [j26]Tzvetan Ostromsky
A Coarse-Grained Parallel QR-Factorization Algorithm for Sparse Least Squares Problems. Parallel Comput. 24(5-6): 937-964 (1998) - [j25]Per Christian Hansen, Søren Holdt Jensen:
FIR filter representations of reduced-rank noise reduction. IEEE Trans. Signal Process. 46(6): 1737-1741 (1998) - 1997
- [j24]Ricardo D. Fierro, Per Christian Hansen
Low-rank revealing UTV decompositions. Numer. Algorithms 15(1): 37-55 (1997) - [j23]Ricardo D. Fierro, Gene H. Golub, Per Christian Hansen, Dianne P. O'Leary:
Regularization by Truncated Total Least Squares. SIAM J. Sci. Comput. 18(4): 1223-1241 (1997) - 1996
- [j22]Per Christian Hansen, Klaus Mosegaard:
Piecewise Polynomial Solutions Without a priori Break Points. Numer. Linear Algebra Appl. 3(6): 513-524 (1996) - [c9]Peter Søren Kirk Hansen, Per Christian Hansen, Steffen Duus Hansen, John Aasted Sørensen:
Noise reduction of speech signals using the rank-revealing ULLV decomposition. EUSIPCO 1996: 1-4 - [c8]Søren Holdt Jensen, Per Christian Hansen:
Reduced-rank noise reduction: A filter-bank interpretation. EUSIPCO 1996: 1-4 - [c7]Per Christian Hansen, Søren Holdt Jensen:
Filter Model of Reduced-Rank Noise Reduction. PARA 1996: 379-387 - 1995
- [j21]Kyle A. Gallivan, Per Christian Hansen, Tzvetan Ostromsky
Locally Optimized Reordering Algorithm and its Application to a Parallel Sparse Linear System Solver. Computing 54(1): 39-68 (1995) - [j20]Claus Bendtsen, Per Christian Hansen, Kaj Madsen, Hans Bruun Nielsen, Mustafa Ç. Pinar:
Implementation of QR Up- and Downdating on a Massively Parallel Computer. Parallel Comput. 21(1): 49-61 (1995) - [j19]Per Christian Hansen:
Test Matrices for Regularization Methods. SIAM J. Sci. Comput. 16(2): 506-512 (1995) - [j18]Søren Holdt Jensen, Per Christian Hansen
Reduction of broad-band noise in speech by truncated QSVD. IEEE Trans. Speech Audio Process. 3(6): 439-448 (1995) - [c6]Tzvetan Ostromsky
A Parallel Sparse QR-Factorization Algorithm. PARA 1995: 462-472 - [c5]John Brown, Per Christian Hansen, P. Kaae, C. Keable, Wojciech Owczarz, Jerzy Wasniewski, Zahari Zlatev:
Comparison of Parallel Computers Using Air Pollution Models. PP 1995: 113-118 - 1994
- [j17]Per Christian Hansen:
Regularization Tools: A Matlab package for analysis and solution of discrete ill-posed problems. Numer. Algorithms 6(1): 1-35 (1994) - [j16]Tony F. Chan, Per Christian Hansen:
Low-rank revealing QR factorizations. Numer. Linear Algebra Appl. 1(1): 33-44 (1994) - [j15]Per Christian Hansen, Tony F. Chan
Corrigendum: Algorithm 729; FORTRAN subroutines for general Toeplitz systems. ACM Trans. Math. Softw. 20(1): 160 (1994) - [j14]Flavio Lorenzelli, Per Christian Hansen, Tony F. Chan
A systolic implementation of the Chan/Foster RRQR algorithm. IEEE Trans. Signal Process. 42(8): 2205-2208 (1994) - [c4]John Brown, Per Christian Hansen, Jerzy Wasniewski, Zahari Zlatev:
Comparison of Massively Parallel SIMD Computers Using Air Pollution Models. PARA 1994: 110-126 - [c3]Per Christian Hansen:
Parallel Issues of Regularization Problems. PARA 1994: 287-295 - [c2]Per Christian Hansen, Tzvetan Ostromsky
Two Enhancements in a Partitioned Sparse Code. PARA 1994: 296-303 - 1993
- [j13]Tony F. Chan, Per Christian Hansen:
Erratum: A Look-Ahead Levinson Algorithm for Indefinite Toeplitz Systems. SIAM J. Matrix Anal. Appl. 14(4): 1191 (1993) - [j12]Per Christian Hansen, Dianne P. O'Leary:
The Use of the L-Curve in the Regularization of Discrete Ill-Posed Problems. SIAM J. Sci. Comput. 14(6): 1487-1503 (1993) - 1992
- [j11]Christian H. Bischof, Per Christian Hansen:
A block algorithm for computing rank-revealing QR factorizations. Numer. Algorithms 2(3): 371-391 (1992) - [j10]Tony F. Chan
A Look-Ahead Levinson Algorithm for Indefinite Toeplitz Systems. SIAM J. Matrix Anal. Appl. 13(2): 490-506 (1992) - [j9]Per Christian Hansen:
Analysis of Discrete Ill-Posed Problems by Means of the L-Curve. SIAM Rev. 34(4): 561-580 (1992) - [j8]Tony F. Chan
Some Applications of the Rank Revealing QR Factorization. SIAM J. Sci. Comput. 13(3): 727-741 (1992) - [j7]Per Christian Hansen, Takashi Sekii, Hiromoto Shibahashi:
The Modified Truncated SVD Method for Regularization in General Form. SIAM J. Sci. Comput. 13(5): 1142-1150 (1992) - [j6]Per Christian Hansen, Tony F. Chan
FORTRAN subroutines for general Toeplitz systems. ACM Trans. Math. Softw. 18(3): 256-273 (1992) - [j5]Tony F. Chan
A look-ahead Levinson algorithm for general Toeplitz systems. IEEE Trans. Signal Process. 40(5): 1079-1090 (1992) - [c1]Flavio Lorenzelli, Kung Yao, Tony F. Chan, Per Christian Hansen:
A systolic rank revealing QR algorithm. ASAP 1992: 430-444 - 1991
- [j4]Christian H. Bischof, Per Christian Hansen:
Structure-Preserving and Rank-Revealing QR-Factorizations. SIAM J. Sci. Comput. 12(6): 1332-1350 (1991) - 1990
- [j3]Per Christian Hansen:
Truncated Singular Value Decomposition Solutions to Discrete Ill-Posed Problems with Ill-Determined Numerical Rank. SIAM J. Sci. Comput. 11(3): 503-518 (1990) - [j2]Tony F. Chan
Computing Truncated Singular Value Decomposition Least Squares Solutions by Rank Revealing QR-Factorizations. SIAM J. Sci. Comput. 11(3): 519-530 (1990)
1980 – 1989
- 1988
- [j1]Per Christian Hansen:
Computation of the singular value expansion. Computing 40(3): 185-199 (1988)
Coauthor Index
manage site settings
To protect your privacy, all features that rely on external API calls from your browser are turned off by default. You need to opt-in for them to become active. All settings here will be stored as cookies with your web browser. For more information see our F.A.Q.
Unpaywalled article links
Add open access links from to the list of external document links (if available).
Privacy notice: By enabling the option above, your browser will contact the API of unpaywall.org to load hyperlinks to open access articles. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Unpaywall privacy policy.
Archived links via Wayback Machine
For web page which are no longer available, try to retrieve content from the of the Internet Archive (if available).
Privacy notice: By enabling the option above, your browser will contact the API of archive.org to check for archived content of web pages that are no longer available. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Internet Archive privacy policy.
Reference lists
Add a list of references from ,
, and
to record detail pages.
load references from crossref.org and opencitations.net
Privacy notice: By enabling the option above, your browser will contact the APIs of crossref.org, opencitations.net, and semanticscholar.org to load article reference information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Crossref privacy policy and the OpenCitations privacy policy, as well as the AI2 Privacy Policy covering Semantic Scholar.
Citation data
Add a list of citing articles from and
to record detail pages.
load citations from opencitations.net
Privacy notice: By enabling the option above, your browser will contact the API of opencitations.net and semanticscholar.org to load citation information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the OpenCitations privacy policy as well as the AI2 Privacy Policy covering Semantic Scholar.
OpenAlex data
Load additional information about publications from .
Privacy notice: By enabling the option above, your browser will contact the API of openalex.org to load additional information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the information given by OpenAlex.
last updated on 2024-11-07 20:32 CET by the dblp team
all metadata released as open data under CC0 1.0 license
see also: Terms of Use | Privacy Policy | Imprint
dblp was originally created in 1993 at:
since 2018, dblp has been operated and maintained by:
the dblp computer science bibliography is funded and supported by: