Tapio Helin
Tapio Helin
LUT University
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Cited by
Cited by
PCS--A Roadmap for Exoearth Imaging with the ELT
M Kasper, NC Urra, P Pathak, M Bonse, J Nousiainen, B Engler, ...
arXiv preprint arXiv:2103.11196, 2021
Maximum a posteriori probability estimates in infinite-dimensional Bayesian inverse problems
T Helin, M Burger
Inverse Problems 31 (8), 085009, 2015
A variational reconstruction method for undersampled dynamic x-ray tomography based on physical motion models
M Burger, H Dirks, L Frerking, A Hauptmann, T Helin, S Siltanen
Inverse Problems 33 (12), 124008, 2017
Sparsity-promoting and edge-preserving maximum a posteriori estimators in non-parametric Bayesian inverse problems
S Agapiou, M Burger, M Dashti, T Helin
Inverse Problems 34 (4), 045002, 2018
Adaptive optics control using model-based reinforcement learning
J Nousiainen, C Rajani, M Kasper, T Helin
Optics Express 29 (10), 15327-15344, 2021
Correlation based passive imaging with a white noise source
T Helin, M Lassas, L Oksanen, T Saksala
Journal de Mathématiques Pures et Appliquées 116, 132-160, 2018
An inverse random source problem in a stochastic fractional diffusion equation
P Niu, T Helin, Z Zhang
Inverse Problems 36 (4), 045002, 2020
Finite element-wavelet hybrid algorithm for atmospheric tomography
M Yudytskiy, T Helin, R Ramlau
JOSA A 31 (3), 550-560, 2014
Wavelet methods in multi-conjugate adaptive optics
T Helin, M Yudytskiy
Inverse Problems 29 (8), 085003, 2013
Hierarchical models in statistical inverse problems and the Mumford–Shah functional
T Helin, M Lassas
Inverse problems 27 (1), 015008, 2010
Simultaneous reconstruction of emission and attenuation in passive gamma emission tomography of spent nuclear fuel
R Backholm, TA Bubba, C Bélanger-Champagne, T Helin, P Dendooven, ...
arXiv preprint arXiv:1905.03849, 2019
Inverse scattering for a random potential
P Caro, T Helin, M Lassas
Analysis and Applications 17 (04), 513-567, 2019
Inverse problems for heat equation and space–time fractional diffusion equation with one measurement
T Helin, M Lassas, L Ylinen, Z Zhang
Journal of Differential Equations 269 (9), 7498-7528, 2020
Inverse random source problems for time-harmonic acoustic and elastic waves
J Li, T Helin, P Li
Communications in Partial Differential Equations 45 (10), 1335-1380, 2020
Toward on-sky adaptive optics control using reinforcement learning-model-based policy optimization for adaptive optics
J Nousiainen, C Rajani, M Kasper, T Helin, SY Haffert, C Vérinaud, ...
Astronomy & Astrophysics 664, A71, 2022
Rates of contraction of posterior distributions based on p-exponential priors
S Agapiou, M Dashti, T Helin
A frequency dependent preconditioned wavelet method for atmospheric tomography
M Yudytskiy, T Helin, R Ramlau
Third AO4ELT Conference - Adaptive Optics for Extremely Large Telescopes, 2013
On infinite-dimensional hierarchical probability models in statistical inverse problems
T Helin
Inverse problems and imaging 3 (4), 567-597, 2009
Fuel rod classification from Passive Gamma Emission Tomography (PGET) of spent nuclear fuel assemblies
R Virta, R Backholm, TA Bubba, T Helin, M Moring, S Siltanen, ...
arXiv preprint arXiv:2009.11617, 2020
Comparison of methods for the reduction of reconstructed layers in atmospheric tomography
D Saxenhuber, G Auzinger, M Le Louarn, T Helin
Applied Optics 56 (10), 2621-2629, 2017
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