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Laurent Najman

34
Documents

Présentation

<image style="float: left; margin-left: 5px; margin-right: 5px;" src="https://laurentnajman.org/uploads/images/LaurentNajman-portrait-2023-small.jpeg" width="142" height="160">**Laurent Najman** received the Habilitation à Diriger les Recherches in 2006 from the University of Marne-la-Vallée, a Ph.D. of applied mathematics from Paris-Dauphine University in 1994 with the highest honour (Félicitations du Jury) and an “Ingénieur” degree from the Ecole des Mines de Paris in 1991. After earning his engineering degree, he worked in the Central Research Laboratories of Thomson-CSF for three years, working on some problems of infrared image segmentation using mathematical morphology. He then joined a start-up company named Animation Science in 1995, as director of research and development. The technology of particle systems for computer graphics and scientific visualisation, developed by the company under his technical leadership received several awards, including the “European Information Technology Prize 1997” awarded by the European Commission (Esprit programme) and by the European Council for Applied Science and Engineering and the “Hottest Products of the Year 1996” awarded by the Computer Graphics World journal. In 1998, he joined OCÉ Print Logic Technologies, as senior scientist. He worked there on various problem of image analysis dedicated to scanning and printing. In 2002, he joined the Informatics Department of ESIEE, Paris, where he is professor and a member of the Laboratoire d’Informatique Gaspard Monge, Université Paris-Est Marne-la-Vallée. His current research interest is discrete mathematical morphology, discrete topology and optimization.

Publications

"thierry-geraud"
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Some equivalence relation between persistent homology and morphological dynamics

Nicolas Boutry , Laurent Najman , Thierry Géraud
Journal of Mathematical Imaging and Vision, 2022, 64, pp.807--824. ⟨10.1007/s10851-022-01104-z⟩
Article dans une revue hal-03676854v1
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Continuous Well-Composedness Implies Digital Well-Composedness in n-D

Nicolas Boutry , Rocio Gonzalez-Diaz , Laurent Najman , Thierry Géraud
Journal of Mathematical Imaging and Vision, 2022, 64 (2), pp.131-150. ⟨10.1007/s10851-021-01058-8⟩
Article dans une revue hal-03575456v1
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Equivalence between Digital Well-Composedness and Well-Composedness in the Sense of Alexandrov on n-D Cubical Grids

Nicolas Boutry , Laurent Najman , Thierry Géraud
Journal of Mathematical Imaging and Vision, 2020, 62 (9), pp.1285-1333. ⟨10.1007/s10851-020-00988-z⟩
Article dans une revue hal-02990817v1
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Topological Properties of the First Non-Local Digitally Well-Composed Interpolation on n-D Cubical Grids

Nicolas Boutry , Laurent Najman , Thierry Géraud
Journal of Mathematical Imaging and Vision, 2020, 62 (9), pp.1256-1284. ⟨10.1007/s10851-020-00989-y⟩
Article dans une revue hal-02990810v1
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How to Make n-D Plain Maps defined on Discrete Surfaces Alexandrov-Well-Composed in a Self-dual Way

Nicolas Boutry , Thierry Géraud , Laurent Najman
Journal of Mathematical Imaging and Vision, 2019, 61, pp.849-973. ⟨10.1007/s10851-019-00873-4⟩
Article dans une revue hal-02005579v1
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A Tutorial on Well-Composedness

Nicolas Boutry , Thierry Géraud , Laurent Najman
Journal of Mathematical Imaging and Vision, 2018, 60 (3), pp.443-478. ⟨10.1007/s10851-017-0769-6⟩
Article dans une revue hal-01609892v2
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Hierarchical Segmentation Using Tree-Based Shape Spaces

Yongchao Xu , Edwin Carlinet , Thierry Géraud , Laurent Najman
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2017, 39 (3), pp.457-469. ⟨10.1109/TPAMI.2016.2554550⟩
Article dans une revue hal-01301966v1
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Connected Filtering on Tree-Based Shape-Spaces

Yongchao Xu , Thierry Géraud , Laurent Najman
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2016, 38 (6), pp.1126 - 1140. ⟨10.1109/TPAMI.2015.2441070⟩
Article dans une revue hal-01162437v1
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Hierarchical image simplification and segmentation based on Mumford-Shah-salient level line selection

Yongchao Xu , Thierry Géraud , Laurent Najman
Pattern Recognition Letters, 2016, ⟨10.1016/j.patrec.2016.05.006⟩
Article dans une revue hal-01287029v2
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Tree-Based Morse Regions: A Topological Approach to Local Feature Detection

Yongchao Xu , Pascal Monasse , Thierry Géraud , Laurent Najman
IEEE Transactions on Image Processing, 2014, 23 (12), pp.5612-5625. ⟨10.1109/TIP.2014.2364127⟩
Article dans une revue hal-01162446v1
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An Equivalence Relation between Morphological Dynamics and Persistent Homology in n-D

Nicolas Boutry , Thierry Géraud , Laurent Najman
Discrete Geometry and Mathematical Morphology (DGMM), May 2021, Uppsala, Sweden
Communication dans un congrès hal-03171063v1
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A 4D counter-example showing that DWCness does not imply CWCness in n-D

Nicolas Boutry , Rocio Gonzalez-Diaz , Laurent Najman , Thierry Géraud
Combinatorial Image Analysis. IWCIA 2020, Jul 2020, Novi Sad, Serbia. ⟨10.1007/978-3-030-51002-2_6⟩
Communication dans un congrès hal-02455798v1
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Well-Composedness in Alexandrov Spaces Implies Digital Well-Composedness in $\mathbb {Z}^n$

Nicolas Boutry , Laurent Najman , Thierry Géraud
20th International Conference on Discrete Geometry for Computer Imagery (DGCI 2017), Sep 2017, Vienne, Austria. pp.225-237, ⟨10.1007/978-3-319-66272-5_19⟩
Communication dans un congrès hal-01586418v1
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Well-composedness in Alexandrov spaces implies digital well-composedness in Z^n

Nicolas Boutry , Laurent Najman , Thierry Géraud
20th IAPR International Conference on Discrete Geometry for Computer Imagery (DGCI), Sep 2017, Vienna, Austria
Communication dans un congrès hal-01744455v1
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Efficient Computation of Attributes and Saliency Maps on Tree-Based Image Representations

Yongchao Xu , Edwin Carlinet , Thierry Géraud , Laurent Najman
Mathematical Morphology and Its Applications to Signal and Image Processing, Benediktsson, J.A.; Chanussot, J.; Najman, L.; Talbot, H., May 2015, Reykjavik, Iceland. pp.693-704, ⟨10.1007/978-3-319-18720-4_58⟩
Communication dans un congrès hal-01168781v1
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How to make nD images Well-composed without interpolation

Nicolas Boutry , Thierry Géraud , Laurent Najman
International Conference on Image Processing (ICIP), Sep 2015, Quebec City, Canada. ⟨10.1109/ICIP.2015.7351181⟩
Communication dans un congrès hal-01134166v1
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How to Make nD Functions Digitally Well-Composed in a Self-dual Way

Nicolas Boutry , Thierry Géraud , Laurent Najman
Mathematical Morphology and Its Applications to Signal and Image Processing, Benediktsson, J.A.; Chanussot, J.; Najman, L.; Talbot, H., May 2015, Reykjavik, Iceland. pp.561-572, ⟨10.1007/978-3-319-18720-4_47⟩
Communication dans un congrès hal-01168723v1
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Espaces des formes basés sur des arbres : définition et applications en traitement d'images et vision par ordinateur

Yongchao Xu , Thierry Géraud , Laurent Najman
Reconnaissance de Formes et Intelligence Artificielle (RFIA) 2014, Jun 2014, Rouen, France
Communication dans un congrès hal-00989112v1
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On making nD images well-composed by a self-dual local interpolation

Nicolas Boutry , Thierry Géraud , Laurent Najman
18th IAPR International Conference, DGCI 2014, Sep 2014, Sienna, Italy. pp.320-331, ⟨10.1007/978-3-319-09955-2_27⟩
Communication dans un congrès hal-01071624v1
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Meaningful Disjoint Level Lines Selection

Yongchao Xu , Edwin Carlinet , Thierry Géraud , Laurent Najman
International Conference on Image Processing (ICIP), Oct 2014, Paris, France
Communication dans un congrès hal-01082342v1
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Practical Genericity: Writing Image Processing Algorithms Both Reusable and Efficient

Roland Levillain , Thierry Géraud , Laurent Najman , Edwin Carlinet
Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, Bayro-Corrochano, Eduardo and Hancock, Edwin, Nov 2014, Puerto Vallarta, Mexico. pp.70 - 79, ⟨10.1007/978-3-319-12568-8_9⟩
Communication dans un congrès hal-01082349v1
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Salient Level Lines Selection Using the Mumford-Shah Functional

Yongchao Xu , Thierry Géraud , Laurent Najman
ICIP 2013, Sep 2013, Melbourne, Australia. pp.1-5
Communication dans un congrès hal-00831032v1
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A quasi-linear algorithm to compute the tree of shapes of n-D images

Thierry Géraud , Edwin Carlinet , Sébastien Crozet , Laurent Najman
International Symposium on Mathematical Morphology, May 2013, Uppsala, Sweden. pp.97-108
Communication dans un congrès hal-00798620v1
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Discrete set-valued continuity and interpolation

Laurent Najman , Thierry Géraud
International Symposium on Mathematical Morphology, May 2013, Uppsala, Sweden. pp.37-48
Communication dans un congrès hal-00798574v1
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Two applications of shape-based morphology: blood vessels segmentation and a generalization of constrained connectivity

Yongchao Xu , Thierry Géraud , Laurent Najman
International Symposium on Mathematical Morphology, May 2013, Uppsala, Sweden. pp.386-397
Communication dans un congrès hal-00798625v1
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Context-based energy estimator: Application to object segmentation on the tree of shapes

Yongchao Xu , Thierry Géraud , Laurent Najman
International Conference on Image Processing (ICIP), Sep 2012, Orlando, Florida, United States. pp.1577-1580
Communication dans un congrès hal-00762289v1

Une approche générique du logiciel pour le traitement d'images préservant les performances

Roland Levillain , Thierry Géraud , Laurent Najman
23ème Colloque GRETSI - Traitement du Signal et des Images (GRETSI'12), 2012, France. 10pp
Communication dans un congrès hal-00622513v1

Morphological Filtering in Shape Spaces: Applications using Tree-Based Image Representations

Yongchao Xu , Thierry Géraud , Laurent Najman
21st International Conference on Pattern Recognition, Nov 2012, Tsukuba, Japan. pp.485-488
Communication dans un congrès hal-00714847v1

Writing Reusable Digital Geometry Algorithms in a Generic Image Processing Framework

Rolland Levillain , Thierry Géraud , Laurent Najman
Workshop on Applications of Digital Geometry and Mathematical Morphology, 2010, France. 10pp
Communication dans un congrès hal-00622481v1
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Writing Reusable Digital Geometry Algorithms in a Generic Image Processing Framework

Roland Levillain , Thierry Géraud , Laurent Najman
WADGMM 2010, Aug 2010, Istanbul, Turkey. pp.140-153, ⟨10.1007/978-3-642-32313-3_10⟩
Communication dans un congrès hal-00733264v1

Why and How to Design a Generic and Efficient Image Processing Framework: The Case of the Milena Library

Rolland Levillain , Thierry Géraud , Laurent Najman
International Conference on Image Processing (ICIP'10), 2010, France. 10pp
Communication dans un congrès hal-00622480v1

Milena: Write Generic Morphological Algorithms Once, Run on Many Kinds of Images

Roland Levillain , Thierry Géraud , Laurent Najman
9th International Symposium on Mathematical Morphology (ISMM'09), Aug 2009, Groningen, Netherlands. pp.295-306
Communication dans un congrès hal-00622404v1
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About the equivalence between AWCness and DWCness

Nicolas Boutry , Laurent Najman , Thierry Géraud
[Research Report] LIGM - Laboratoire d'Informatique Gaspard-Monge; LRDE - Laboratoire de Recherche et de Développement de l'EPITA. 2016
Rapport hal-01375621v2