Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Gaël Rigaud"'
Autor:
Janek Gödeke, Gaël Rigaud
The recent development of scintillation crystals combined with γ-rays sources opens the way to an imaging concept based on Compton scattering, namely Compton scattering tomography. The associated inverse problem rises many challenges: non-linearity,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a3432c0d5b2b2114c2d82bde5f8530a
http://arxiv.org/abs/2202.00810
http://arxiv.org/abs/2202.00810
Publikováno v:
Inverse Problems. 39:030401
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc1a5379ad8d6ee7796c7e69d39b66df
https://doi.org/10.1088/1361-6420/acb569
https://doi.org/10.1088/1361-6420/acb569
Building on the well-known total variation, this paper develops a general regularization technique based on nonlinear isotropic diffusion (NID) for inverse problems with piecewise smooth solutions. The novelty of our approach is to be adaptive (we sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da8ab72b67e26098743d3cc46c19d62e
http://arxiv.org/abs/2108.10662
http://arxiv.org/abs/2108.10662
Autor:
Lorenz Kuger, Gaël Rigaud
The recent development of energy-resolving scintillation crystals opens the way to new types of applications and imaging systems. In the context of computerized tomography (CT), it enables to use the energy as a dimension of information supplementing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::113efbeed30171c8dc68023d4553427f
http://arxiv.org/abs/2008.06699
http://arxiv.org/abs/2008.06699
Autor:
Gaël Rigaud
Publikováno v:
Inverse Problems. 37:064001
3D Compton scattering imaging (CSI) is an upcoming concept exploiting the scattering of photons induced by the electronic structure of the object under study. The so-called Compton scattering rules the collision of particles with electrons and descri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03ddd3192d3ddc56f9180fe5404ab5a4
https://doi.org/10.1088/1361-6420/abf22b
https://doi.org/10.1088/1361-6420/abf22b
Autor:
Gaël Rigaud
Publikováno v:
SIAM Journal on Imaging Sciences. 10:2217-2249
Compton scattering tomography (CST) is an emerging two-dimensional imaging concept exploiting the scattered radiation while a specimen is illuminated by a gamma source. In the last decade, the study of first-order scattered photons has led to model t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ec8ad55d90457c4a42b656d481e9eb9
https://doi.org/10.1137/17m1120105
https://doi.org/10.1137/17m1120105
Publikováno v:
IEEE Geoscience and Remote Sensing Letters
IEEE Geoscience and Remote Sensing Letters, IEEE-Institute of Electrical and Electronics Engineers, 2016, 13 (7), pp.936-938. ⟨10.1109/LGRS.2016.2554662⟩
IEEE Geoscience and Remote Sensing Letters, IEEE-Institute of Electrical and Electronics Engineers, 2016, 13 (7), pp.936-938. ⟨10.1109/LGRS.2016.2554662⟩
International audience; This letter is concerned with imaging a 3-D scene from a set of 2-D laser images of backscattered intensity without prior knowledge. The interaction between an electromagnetic wave and a medium can be understood and modeled in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3571b29259e0b5efd5812c3d9905924a
https://doi.org/10.1109/lgrs.2016.2554662
https://doi.org/10.1109/lgrs.2016.2554662
Autor:
Gaël Rigaud
Publikováno v:
Sensing and Imaging. 18
When polychromatic X-rays propagate through a material, for instance in computerized tomography (CT), low energy photons are more attenuated resulting in a “harder” beam. The beam-hardening phenomenon breaks the monochromatic radiation model base
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a70f081682eef538e6122b14c0f06aa
https://doi.org/10.1007/s11220-016-0153-4
https://doi.org/10.1007/s11220-016-0153-4
Autor:
Gaël Rigaud, Bernadette N. Hahn
Publikováno v:
Inverse Problems. 34:075004
Compton scattering imaging is a nascent concept arising from the current development of high-sensitive energy detectors and is devoted to exploit the scattering radiation to image the electron density of the studied medium. Such detectors are able to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4b65dc178c2bd31e875c329fd8fa32b
https://doi.org/10.1088/1361-6420/aabf0b
https://doi.org/10.1088/1361-6420/aabf0b
Publikováno v:
Mathematical Problems in Engineering
Mathematical Problems in Engineering, Hindawi Publishing Corporation, 2015, Special issue "Inverse Problems: Theory and Application to Science and Engineering 2015, 2015, ⟨10.1155/2015/268295⟩
Mathematical Problems in Engineering, Vol 2015 (2015)
Mathematical Problems in Engineering, Hindawi Publishing Corporation, 2015, Special issue "Inverse Problems: Theory and Application to Science and Engineering 2015, 2015, ⟨10.1155/2015/268295⟩
Mathematical Problems in Engineering, Vol 2015 (2015)
Simple reflection imaging of landscape (scenery or extended objects) poses the inverse problem of reconstructing the landscape reflectivity function from its integrals on some particular family of spheres. Such data acquisition is encoded in the fram
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::398a9955d97f8fc4b902ea9eaf07fb17
https://hal.archives-ouvertes.fr/hal-01260336
https://hal.archives-ouvertes.fr/hal-01260336