Výsledky vyhledávání - "Alexandre Dupas"

Synthesis of Highly Substituted Azepanones from 2 H -Azirines by a Stepwise Annulation/Ring-Opening Sequence

Autor: Janine Cossy, Gérard Guillamot, Alexandre Dupas, Christophe Meyer, Pierre-Alexandre Lhotellier

Publikováno v: Organic Letters
Organic Letters, American Chemical Society, 2019, 21 (10), pp.3589-3593. ⟨10.1021/acs.orglett.9b00999⟩

Bicyclic aziridines possessing a 1-azabicyclo[4.1.0]heptan-2-one core were prepared from 2 H-azirines by a stepwise annulation sequence involving a diastereoselective allylindanation, an N-acylation, and a ring-closing metathesis to construct the six

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4ad562e62839898e03b28cc038faf1a
https://hal.archives-ouvertes.fr/hal-02379813

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Grouping/degrouping point process, a point process driven by geometrical and topological properties of a partition in regions

Autor: Olivier Alata, Samuel Burg, Alexandre Dupas

Publikováno v: Computer Vision and Image Understanding
Computer Vision and Image Understanding, Elsevier, 2011, 115, pp.1324-1339. ⟨10.1016/j.cviu.2011.05.003⟩

International audience; We present a new type of point process, called Grouping/Degrouping Point Process (GDPP), which aim is to select a set of regions of a volume associated to an object or a Region of Interest (ROI). These regions can be obtained

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e1ba2061977923bb81c66beb2b5fc87
https://doi.org/10.1016/j.cviu.2011.05.003

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Partial volume effect estimation and correction in the aortic vascular wall in PET imaging

Autor: Irène Buvat, P Huet, Alexandre Dupas, Simon Stute, Arnaud Dieudonné, D. Le Guludec, S. Burg

Publikováno v: Physics in Medicine and Biology
Physics in Medicine and Biology, IOP Publishing, 2013, 58 (21), pp.7527-7542. ⟨10.1088/0031-9155/58/21/7527⟩

International audience; We evaluated the impact of partial volume effect (PVE) in the assessment of arterial diseases with (18)FDG PET. An anthropomorphic digital phantom enabling the modeling of aorta related diseases like atherosclerosis and arteri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdcf7542c9feee42e61508440b1a4544
https://hal.archives-ouvertes.fr/hal-02401425

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Combinatorial Maps for 2D and 3D Image Segmentation

Autor: Alexandre Dupas, Guillaume Damiand

Publikováno v: Digital Geometry Algorithms
Digital Geometry Algorithms, Springer, pp.359-393, 2012, ⟨10.1007/978-94-007-4174-4_12⟩
Digital Geometry Algorithms ISBN: 9789400741737

International audience; This chapter shows how combinatorial maps can be used for 2D or 3D image segmentation. We start by introducing combinatorial maps and we show how they can be used to describe image partitions. Then, we present a generic segmen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3a28da52289f53e6e1e5bcd4c45f838
https://hal.archives-ouvertes.fr/hal-01353024

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Fully Deformable 3D Digital Partition Model with Topological Control

Autor: Guillaume Damiand, Jacques-Olivier Lachaud, Alexandre Dupas

Publikováno v: Pattern Recognition Letters
Pattern Recognition Letters, Elsevier, 2011, 32 (9), pp.1374-1383. ⟨10.1016/j.patrec.2010.09.005⟩

International audience; We propose a purely discrete deformable partition model for segmenting 3D images. Its main ability is to maintain the topology of the partition during the minimization process. To do so, our main contribution is a new definiti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a00f4ef9445af4575f5553fca4509497
https://hal.archives-ouvertes.fr/hal-00591065/file/deformable-model-specialissue-dgci-prl.pdf

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Combining Topological Maps, Multi-Label Simple Points, and Minimum-Length Polygons for Efficient Digital Partition Model

Autor: Alexandre Dupas, Jacques-Olivier Lachaud, Guillaume Damiand

Publikováno v: Lecture Notes in Computer Science ISBN: 9783642210723
IWCIA
International Workshop on Combinatorial Image Analysis
International Workshop on Combinatorial Image Analysis, May 2011, Madrid, Spain. pp.56-69, ⟨10.1007/978-3-642-21073-0_8⟩

International audience; Deformable models have shown great potential for image segmentation. They include discrete models whose combinatorial formulation leads to efficient and sometimes optimal minimization algorithms. In this paper, we propose a ne

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::382c7244d7b724d0217a7a8fa87fb315
https://doi.org/10.1007/978-3-642-21073-0_8

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Multi-Label Simple Points Definition for 3D Images Digital Deformable Model

Autor: Jacques-Olivier Lachaud, Alexandre Dupas, Guillaume Damiand

Publikováno v: 15th IAPR International Conference on Discrete Geometry for Computer Imagery (DGCI2009)
15th IAPR International Conference on Discrete Geometry for Computer Imagery (DGCI2009), Sep 2009, Montréal, Québec, Canada. pp.156-167, ⟨10.1007/978-3-642-04397-0_14⟩
Discrete Geometry for Computer Imagery ISBN: 9783642043963
DGCI

International audience; The main contribution of this paper is the definition of multi-label simple points that ensures that the partition topology remains invariant during a deformable partition process. The definition is based on simple intervoxel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32a0fb005ef1c5d199081545d02191c0
https://hal.archives-ouvertes.fr/hal-00413691/file/DupasAl09.pdf

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Region Merging with Topological Control

Autor: Alexandre Dupas, Guillaume Damiand

Publikováno v: Discrete Applied Mathematics
Discrete Applied Mathematics, Elsevier, 2009, 157 (16), pp.3435-3446. ⟨10.1016/j.dam.2009.04.005⟩

International audience; This paper presents a region merging process controlled by topological features on regions in three-dimensional (3D) images. Betti numbers, a well-known topological invariant, are used as criteria. Classical and incremental al

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46667f2b3e52bda5e31a6e8bfb8ff5cf
https://hal.archives-ouvertes.fr/hal-00422688/file/dam-2008.pdf

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Comparison of Local and Global Region Merging in the Topological Map

Autor: Alexandre Dupas, Guillaume Damiand

Publikováno v: Proceedings of 12th International Workshop on Combinatorial Image Analysis
International Workshop on Combinatorial Image Analysis
International Workshop on Combinatorial Image Analysis, Apr 2008, Buffalo, NY, United States. pp.420-431, ⟨10.1007/978-3-540-78275-9_37⟩
Lecture Notes in Computer Science ISBN: 9783540782742
IWCIA

International audience; The topological map is a model that represents 2D and 3D images subdivision. It aims to allow the use of topological and geometrical features of the subdivision in image processing operations. When handling regions in an image

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d0a07d5aa790770b7f15633827b38f1
https://hal.archives-ouvertes.fr/hal-00305446/document

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First Results for 3D Image Segmentation with Topological Map

Autor: Alexandre Dupas, Guillaume Damiand

Publikováno v: Discrete Geometry for Computer Imagery
Discrete Geometry for Computer Imagery, Apr 2008, Lyon, France. pp.507-518, ⟨10.1007/978-3-540-79126-3_45⟩
Discrete Geometry for Computer Imagery ISBN: 9783540791256
DGCI

International audience; This paper presents the first segmentation operation defined within the 3D topological map framework. Firstly we show how a traditional segmentation algorithm, found in the literature, can be transposed on a 3D image represent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa44eaf92965d818a253b78c5863d6d6
https://hal.archives-ouvertes.fr/hal-00305485

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