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Simulation of inverse Fredholm reconstruction in a vignetting zone: application to ASPIICS

Autor: C. Theys, C. Aime, R. Rougeot, H. Lantéri

Publikováno v: Astronomy & Astrophysics. 665:A109

Aims. This work deals with image reconstruction in a vignetting zone where the point spread function becomes evanescent and the image undergoes a Fredholm transformation. The application of this method is aimed at the reconstruction of the solar coro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0c948327f290ef5f0dc9175b1338729e
https://doi.org/10.1051/0004-6361/202141217

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Constrained Minimization Algorithms. Linear Models

Autor: Celine Theys, H. Lantéri, Cedric Richard

Publikováno v: New Concepts in Imaging: Optical and Statistical Models

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00e9857d2e4bdf27c36c30b07da7931e
https://doi.org/10.1051/978-2-7598-2487-8.c016

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Principle of Fredholm image reconstruction in the vignetting zone of an externally occulted solar coronagraph

Autor: H. Lantéri, R. Rougeot, C. Theys, Claude Aime

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 622, pp.A212. ⟨10.1051/0004-6361/201833843⟩

Aims. This study is carried out in the context of data processing of the solar coronagraph ASPIICS of the future formation-flying mission Proba-3, which is expected to provide images of the corona very close to the limb. There will be a transition zo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b864e4852b578c36849498e38c0321c5
https://doi.org/10.1051/0004-6361/201833843

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Constrained Minimization Algorithms

Autor: Celine Theys, Cedric Richard, H. Lantéri

Publikováno v: EAS Publications Series. 59:303-324

In this paper, we consider the inverse problem of restoring an unknown signal or image, knowing the transformation suffered by the unknowns. More specifically we deal with transformations described by a linear model linking the unknown signal to an u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94957e68e4a303065ac8897bb47aae6a
https://doi.org/10.1051/eas/1359014

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SGM to solve NMF – Application to Hyperspectral Data

Autor: Cedric Richard, H. Lantéri, Celine Theys

Publikováno v: EAS Publications Series. 59:357-379

This article deals with the problem of minimization of a general cost function under non-negativity and flux conservation con- straints. The proposed algorithm is founded on the Split Gradient Method (SGM) adapted here to solve the Non Negative Matri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4920c0b5694de7b76c5fa4d58530f80
https://doi.org/10.1051/eas/1359016

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Deconvolution of interferometric data using interior point iterative algorithms

Autor: H. Lantéri, C. Theys, Claude Aime

Publikováno v: EAS Publications Series
EAS Publications Series, EDP Sciences, 2016, 78-79, pp.211-231. ⟨10.1051/eas/1678010⟩

We address the problem of deconvolution of astronomical images that could be obtained with future large interferometers in space. The presentation is made in two complementary parts. The first part gives an introduction to the image deconvolution wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04719a099a9ecabcead2dc80432ff7dd
https://hal.archives-ouvertes.fr/hal-03451618

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Scale invariant divergences for signal and image reconstruction

Autor: H. Lantéri, Claude Aime, Celine Theys

Publikováno v: EUSIPCO

The subject of this paper is the reconstruction of a signal or an image under constraints of non negativity and of constant sum. The sum constraint is imposed by the use of scale invariant divergences, which allows the development of simple iterative

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c213051aa8cdc699c0dee12803079951
https://doi.org/10.1109/eusipco.2015.7362767

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Reduction of boundary effects in multiple image deconvolution with an application to LBT LINC-NIRVANA

Autor: B. Anconelli, Patrizia Boccacci, H. Lantéri, Mario Bertero, Marcel Carbillet

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2006, 448 (3), pp.1217-1224. ⟨10.1051/0004-6361:20053848⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2006, 448, pp.1217

Our approach proposed in a previous paper for the reduction of boundary effects in the deconvolution of astronomical images by the Richardson-Lucy method (RLM) is extended here to the problem of multiple image deconvolution and applied to the reconst

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcdac60492f88aaa95fc1ef160868952
https://doi.org/10.1051/0004-6361:20053848

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