Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Riddell, Cyril"'
Deep Unfolding of the DBFB Algorithm with Application to ROI CT Imaging with Limited Angular Density
This paper presents a new method for reconstructing regions of interest (ROI) from a limited number of computed tomography (CT) measurements. Classical model-based iterative reconstruction methods lead to images with predictable features. Still, they
Externí odkaz:
http://arxiv.org/abs/2209.13264
Autor:
Supanich, Mark, Siewerdsen, Jeff, Fahrig, Rebecca, Farahani, Keyvan, Gang, Grace Jianan, Helm, Pat, Jans, Jan, Jones, Kyle, Koenig, Thomas, Kuhls‐Gilcrist, Andrew, Lin, MingDe, Riddell, Cyril, Ritschl, Ludwig, Schafer, Sebastian, Schueler, Beth, Silver, Mike, Timmer, Jan, Trousset, Yves, Zhang, Jie
Publikováno v:
Medical Physics; Aug2023, Vol. 50 Issue 8, pe904-e945, 42p
Akademický článek
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Publikováno v:
IEEE Signal Processing Letters
IEEE Signal Processing Letters, 2022, 29, pp.1122-1126. ⟨10.1109/LSP.2022.3169088⟩
IEEE Signal Processing Letters, 2022, 29, pp.1122-1126. ⟨10.1109/LSP.2022.3169088⟩
International audience; This work addresses the resolution of penalized least-squares problems using the proximal gradient algorithm (PGA). PGA can be accelerated by preconditioning strategies. However, typical effective choices of preconditioners ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ec7d11009e4f78e8ba04c0ead3c2145
https://hal.science/hal-03654146/document
https://hal.science/hal-03654146/document
Akademický článek
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Akademický článek
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Autor:
Savanier, Marion, Riddell, Cyril, Trousset, Yves, Chouzenoux, Emilie, Pesquet, Jean-Christophe
Publikováno v:
CT Meeting 2020-6th International Conference on Image Formation in X-Ray Computed Tomography
CT Meeting 2020-6th International Conference on Image Formation in X-Ray Computed Tomography, Aug 2020, Regensburg (virtual), Germany
CT Meeting 2020-6th International Conference on Image Formation in X-Ray Computed Tomography, Aug 2020, Regensburg (virtual), Germany
International audience; Discretizing tomographic operators is a crucial step in the design of reconstruction algorithms. In particular, for iterative methods, the projector and backprojector are usually assumed to be matched to guarantee convergence.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::99eb812fa727e76a1dbdd23ae863fa8c
https://hal.archives-ouvertes.fr/hal-03140763/file/A_Matched_CBCT_Projector_Backprojector_Based_on_the_Convolution_of_B-splines_final.pdf
https://hal.archives-ouvertes.fr/hal-03140763/file/A_Matched_CBCT_Projector_Backprojector_Based_on_the_Convolution_of_B-splines_final.pdf
Autor:
Stayman, Joseph Webster, Savanier, Marion, Riddell, Cyril, Trousset, Yves, Chouzenoux, Emilie, Pesquet, Jean-Christophe
Publikováno v:
Proceedings of SPIE; October 2022, Vol. 12304 Issue: 1 p123042W-123042W-7, 1107386p
Autor:
Reshef, Aymeric, Nikoukhah, Tina, Riddell, Cyril, Tousset, Yves, Ladjal, Saïd, Bloch, Isabelle
Publikováno v:
Fifth International Conference on Image Formation in X-Ray Computed Tomography
Fifth International Conference on Image Formation in X-Ray Computed Tomography, May 2018, Salt Lake City, Utah, United States
Fifth International Conference on Image Formation in X-Ray Computed Tomography, May 2018, Salt Lake City, Utah, United States
International audience; Recently, we introduced a two-pass analytical recon-struction that allows truncation to be accounted for in the imagedomain rather than the projection domain. In particular, weshowed that backprojection of a vastly angularly u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::17f8c00b7bd2d6b7b6c9a06553cf2914
https://hal.telecom-paris.fr/hal-02287830
https://hal.telecom-paris.fr/hal-02287830
Publikováno v:
Fifth International Conference on Image Formation in X-Ray Computed Tomography
Fifth International Conference on Image Formation in X-Ray Computed Tomography, May 2018, Salt Lake City, Utah, United States
Fifth International Conference on Image Formation in X-Ray Computed Tomography, May 2018, Salt Lake City, Utah, United States
International audience; This paper provides a backprojection-filtrationmethod for image reconstruction in divergent circular fan-beamand cone-beam geometries with flat detectors. It is based on asplitting of the acquisition angular range into angular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::b9fd3aaa7c36a72035eb89dba46f5433
https://hal.telecom-paris.fr/hal-02288517
https://hal.telecom-paris.fr/hal-02288517