Grégoire Lefebvre

39
Documents
Affiliation actuelle
  • Orange Labs
Identifiants chercheurs

Présentation

Grégoire Lefebvre a obtenu un diplôme d'Ingénieur en Mathématiques Appliquées à l’INSA de Rouen, France, en 2000, puis un doctorat en Sciences Cognitives, financé par France Telecom R&D, à l’Université de Bordeaux, France, en 2007. Depuis 2007, il travaille chez Orange Research, où il est actuellement Chercheur Senior en Intelligence Artificielle pour les Télécommunications. Il est co-auteur de plus de 50 publications et 30 brevets. Il a notamment été relecteur pour les revues IEEE Transactions on Neural Networks and Learning Systems, IEEE Transactions on Pattern Analysis and Machine Intelligence, et Elsevier NeuroComputing. Il a co-supervisé 6 étudiants en Master, 9 doctorants et 6 chercheurs postdoctoraux. Ses domaines de recherche incluent l’apprentissage profond, les communications sémantiques et le traitement des signaux sociaux.

Publications

Publications

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Compacting Semantic Matryoshka Representations with Product Quantization

Leonardo Roque , Quentin Lampin , Louis-Adrien Dufrène , Guillaume Larue , Grégoire Lefebvre et al.

Workshop AI native Communications Systems - towards Integrated Intelligent and Highly Efficient Systems at the 2025 IEEE Global Communications Conference, Dec 2025, Taipei, Taiwan

Communication dans un congrès hal-05480329v1
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MEFA: Multimodal Image Early Fusion with Attention Module for Pedestrian and Vehicle Detection

Yoann Dupas , Olivier Hotel , Grégoire Lefebvre , Christophe Cerin

VISAPP 2025 - 20th International Conference on Computer Vision Theory and Applications, Feb 2025, Porto, Portugal. pp.610-617, ⟨10.5220/0013236000003912⟩

Communication dans un congrès hal-05010469v1
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MEFA-MS: Attention-Based U-Net for Pedestrian and Vehicle Detection

Yoann Dupas , Olivier Hotel , Grégoire Lefebvre , Christophe Cérin

ICMV 2025 - Eighteenth International Conference on Machine Vision, Oct 2025, Paris, France. pp.1-8

Communication dans un congrès hal-05368360v1
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Semantic Communication for Person Re-Identification

Stéphane Coutant , Grégoire Lefebvre

IEEE Virtual Conference on Communications, Nov 2025, Virtual conference, France

Communication dans un congrès hal-05416418v1
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Transformer-Based Self-Supervised Learning for Emotion Recognition

Juan Vazquez-Rodriguez , Grégoire Lefebvre , Julien Cumin , James L. Crowley

26th International Conference on Pattern Recognition (ICPR 2022), Aug 2022, Montreal, Canada

Communication dans un congrès hal-03634490v2
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Robust Variational Autoencoders and Normalizing Flows for Unsupervised Network Anomaly Detection

Naji Najari , Samuel Berlemont , Grégoire Lefebvre , Stefan Duffner , Christophe Garcia

The 36th International Conference on Advanced Information Networking and Applications (AINA), 2022, Apr 2022, Sydney, Australia

Communication dans un congrès hal-03542451v1

Improved CNN-based Magnetic Indoor Positioning System using Attention Mechanism

Mahdi Abid , Paul Compagnon , Grégoire Lefebvre

2021 International Conference on Indoor Positioning and Indoor Navigation (IPIN), Nov 2021, Lloret de Mar, Spain. pp.1-8, ⟨10.1109/IPIN51156.2021.9662602⟩

Communication dans un congrès hal-03545107v1

RADON: Robust Autoencoder for Unsupervised Anomaly Detection

Naji Najari , Samuel Berlemont , Grégoire Lefebvre , Stefan Duffner , Christophe Garcia

The 14th International Conference on Security of Information and Networks, SINCONF 2021, Dec 2021, Edinburgh, United Kingdom. ⟨10.1109/SIN54109.2021.9699174⟩

Communication dans un congrès hal-03542185v1

Network Traffic Modeling For IoT-device Re-identification

Naji Najari , Samuel Berlemont , Grégoire Lefebvre , Stefan Duffner , Christophe Garcia

2020 International Conference on Omni-layer Intelligent Systems (COINS), Aug 2020, Barcelona, France. pp.1-6, ⟨10.1109/COINS49042.2020.9191376⟩

Communication dans un congrès hal-03148283v1
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Personalized Posture and Fall Classification with Shallow Gated Recurrent Units

Paul Compagnon , Grégoire Lefebvre , Stefan Duffner , Christophe Garcia

32nd IEEE CBMS International Symposium on Computer-Based Medical Systems, Jun 2019, Cordoue, Spain. ⟨10.1109/CBMS.2019.00034⟩

Communication dans un congrès hal-02095355v1
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Routine Modeling with Time Series Metric Learning

Paul Compagnon , Grégoire Lefebvre , Stefan Duffner , Christophe Garcia

28th International Conference on Artificial Neural Networks, Sep 2019, Munich, Germany. ⟨10.1007/978-3-030-30484-3_47⟩

Communication dans un congrès hal-02165265v2
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Attitude Estimation for Posture Detection in eHealth Services

Aida Makni , Grégoire Lefebvre

31st IEEE Computer-Based Medical Systems, Jun 2018, Karlstad, Sweden

Communication dans un congrès hal-01825808v1
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Inferring Availability for Communication in Smart Homes Using Context

Julien Cumin , Grégoire Lefebvre , Fano Ramparany , James L. Crowley

PerCom 2018 - IEEE International Conference on Pervasive Computing and Communications, Mar 2018, Athènes, Greece. pp.1-6

Communication dans un congrès hal-01762137v1
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Human Activity Recognition Using Place-Based Decision Fusion in Smart Homes

Julien Cumin , Grégoire Lefebvre , Fano Ramparany , James L. Crowley

10th International and Interdisciplinary Conference, CONTEXT 2017, Jun 2017, Paris, France. pp.137 - 150, ⟨10.1145/1865987.1866010⟩

Communication dans un congrès hal-01555334v1
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Social Intelligence Modeling using Wearable Devices

Alaeddine Mihoub , Grégoire Lefebvre

22nd International Conference on Intelligent User Interfaces (IUI 2017), Mar 2017, Limassol, Cyprus. pp.331 - 341, ⟨10.1145/3025171.3025195⟩

Communication dans un congrès hal-01493849v1
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A Priori Data and A Posteriori Decision Fusions for Human Action Recognition

Julien Cumin , Grégoire Lefebvre

11th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISAPP), Mar 2016, Roma, Italy

Communication dans un congrès hal-01282008v1
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Polar Sine Based Siamese Neural Network for Gesture Recognition

Samuel Berlemont , Grégoire Lefebvre , Stefan Duffner , Christophe Garcia

International Conference on Artificial Neural Networks, Sep 2016, Barcelona, Spain. ⟨10.1007/978-3-319-44781-0_48⟩

Communication dans un congrès hal-01369302v1
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Siamese Neural Network based Similarity Metric for Inertial Gesture Classification and Rejection

Samuel Berlemont , Grégoire Lefebvre , Stefan Duffner , Christophe Garcia

International Conference on Automatic Face and Gesture Recognition, May 2015, Ljubljana, Slovenia. pp.1-6, ⟨10.1109/FG.2015.7163112⟩

Communication dans un congrès hal-01179993v1
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3D gesture classification with convolutional neural networks

Stefan Duffner , Samuel Berlemont , Grégoire Lefebvre , Christophe Garcia

International Conference on Acoustics, Speech, and Signal Processing (ICASSP), May 2014, Florence, Italy. pp.5432 - 5436, ⟨10.1109/ICASSP.2014.6854641⟩

Communication dans un congrès hal-01180542v1
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Learning a bag of features based nonlinear metric for facial similarity

Grégoire Lefebvre , Christophe Garcia

Advanced Video and Signal Based Surveillance (AVSS), 2013 10th IEEE International Conference on, Aug 2013, Krakow, Poland. ⟨10.1109/AVSS.2013.6636646⟩

Communication dans un congrès hal-01218768v1
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BLSTM-RNN based 3D Gesture Classification

Grégoire Lefebvre , Samuel Berlemont , Franck Mamalet , Christophe Garcia

Artificial Neural Networks and Machine Learning, ICANN 2013, 23rd International Conference on Artificial Neural Networks, Sep 2013, Sofia, Bulgaria

Communication dans un congrès hal-01224806v1

Coupling Gestures with Tactile Feedback: A Comparative User Study

Grégoire Lefebvre , Emmanuelle Boyer , Sophie Zijp-Rouzier

the 7th Nordic Conference, Oct 2012, Copenhagen, Netherlands. pp.380, ⟨10.1145/2399016.2399075⟩

Communication dans un congrès hal-02434756v1

Multi-touch based video selection with an audio emotional curve

Grégoire Lefebvre

the 2012 ACM annual conference extended abstracts, May 2012, Austin, United States. pp.2561, ⟨10.1145/2212776.2223836⟩

Communication dans un congrès hal-02434751v1

Gesture based interaction for visually-impaired people

Sylvie Vidal , Grégoire Lefebvre

the 6th Nordic Conference on Computer Human Interaction, Oct 2010, Reykjavik, France. pp.809, ⟨10.1145/1868914.1869035⟩

Communication dans un congrès hal-02434746v1

OverView: Physically-based Vibrotactile Feedback for Temporal Information Browsing

Steven Strachan , Grégoire Lefebvre , Sophie Zijp-Rouzier

the 11th International Conference on Mobile Human Computer Interaction, Sep 2009, Bonn, France. pp.1, ⟨10.1145/1613858.1613910⟩

Communication dans un congrès hal-02434734v1
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A Probabilistic Self-Organizing Map for Facial Recognition

Grégoire Lefebvre , Christophe Garcia

Pattern Recognition, 2008. ICPR 2008. 19th International Conference on, Dec 2008, Tampa, United States. ⟨10.1109/ICPR.2008.4760955⟩

Communication dans un congrès hal-01224217v1
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Facial biometry by stimulating salient singularity masks

Grégoire Lefebvre , Christophe Garcia

Advanced Video and Signal Based Surveillance, 2007. AVSS 2007. IEEE Conference on, Sep 2007, London, United Kingdom. ⟨10.1109/AVSS.2007.4425363⟩

Communication dans un congrès hal-01219192v1
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Objectionable Image Detection by ASSOM Competition

Grégoire Lefebvre , Huicheng Zheng , Christophe Laurent

Image and Video Retrieval, 5th International Conference, CIVR 2006, Jul 2006, Tempe, United States. ⟨10.1007/11788034_21⟩

Communication dans un congrès hal-01224269v1
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On the Basis Updating Rule of Adaptive-Subspace Self-Organizing Map (ASSOM)

Huicheng Zheng , Christophe Laurent , Grégoire Lefebvre

Artificial Neural Networks - ICANN 2006, 16th International Conference,, Sep 2006, Athens, Greece. ⟨10.1007/11840817_46⟩

Communication dans un congrès hal-01224793v1
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Supervised Image Classification by SOM Activity Map Comparison

Grégoire Lefebvre , Christophe Laurent , Julien Ros , Christophe Garcia

Pattern Recognition, 2006. ICPR 2006. 18th International Conference on, Aug 2006, Hong Kong, China. ⟨10.1109/ICPR.2006.1094⟩

Communication dans un congrès hal-01224216v1
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A Cascade of Unsupervised and Supervised Neural Networks for Natural Image Classification

Julien Ros , Christophe Laurent , Grégoire Lefebvre

Image and Video Retrieval, 5th International Conference, CIVR 2006, Jul 2006, Tempe, United States. ⟨10.1007/11788034_10⟩

Communication dans un congrès hal-01224262v1

Improving indoor geomagnetic field fingerprinting using recurrence plot-based convolutional neural networks

Mahdi Abid , Grégoire Lefebvre

Journal of Location Based Services, 2021, 15 (1), pp.61-87. ⟨10.1080/17489725.2020.1856428⟩

Article dans une revue hal-03545096v1
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Learning Personalized ADL Recognition Models from Few Raw Data

Paul Compagnon , Grégoire Lefebvre , Stefan Duffner , Christophe Garcia

Artificial Intelligence in Medicine, 2020, pp.101916. ⟨10.1016/j.artmed.2020.101916⟩

Article dans une revue hal-02882684v1
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PSINES: Activity and Availability Prediction for Adaptive Ambient Intelligence

Julien Cumin , Grégoire Lefebvre , Fano Ramparany , James L Crowley

ACM Transactions on Autonomous and Adaptive Systems, 2020, 15 (1), pp.1-12. ⟨10.1145/3424344⟩

Article dans une revue hal-02943970v1
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Wearables and Social Signal Processing for Smarter Public Presentations

Alaeddine Mihoub , Grégoire Lefebvre

ACM Transactions on Interactive Intelligent Systems , 2019, Highlights of ACM IUI 2017, 9 (2-3), pp.9. ⟨10.1145/3234507⟩

Article dans une revue hal-01901691v1
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Class-Balanced Siamese Neural Networks

Samuel Berlemont , Grégoire Lefebvre , Stefan Duffner , Christophe Garcia

Neurocomputing, 2017

Article dans une revue hal-01580527v1
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Fast-Learning Adaptive-Subspace Self-Organizing Map: An Application to Saliency-Based Invariant Image Feature Construction

Huicheng Zheng , Grégoire Lefebvre , Christophe Laurent

IEEE Transactions on Neural Networks, 2008, ⟨10.1109/TNN.2007.911741⟩

Article dans une revue hal-01216103v1

Deep Neural Networks for Indoor Geomagnetic Field Fingerprinting with Regression Approach

Mahdi Abid , Grégoire Lefebvre

Proceedings of the 22nd Engineering Applications of Neural Networks Conference, 3, Springer International Publishing, pp.178-189, 2021, Proceedings of the International Neural Networks Society, ⟨10.1007/978-3-030-80568-5_15⟩

Chapitre d'ouvrage hal-03545088v1