Grégoire Lefebvre (Ph.D.)

Research Scientist in Machine Learning at Orange Labs (ex France Telecom R&D), Grenoble, France

Orange Expert "Solutions for Content Services"

Short bio

I received an Engineering degree in Applied Mathematics from the National Institute of Applied Sciences (INSA), Rouen, in 2000,
and a Ph.D. degree in Cognitive Sciences from the University of Bordeaux, funded by FranceTelecom R&D, Rennes, in 2007.

Since 2007, I have been working as a Research Scientist at Orange Labs, Grenoble.

Research topics

Deep Learning, Pervasive Interaction, Ubiquitous Computing
Face, Gesture and Activity Recognition
Smart Home, eHealth

Postdocs

D04 _ Thomas Hassan, Human Localisation in Smart Homes, 2018.(with F.Ramparany)
D03 _ Aida Makni, Human Posture Detection and Device Attitude Estimation, 2017.(with M. Berenguer)
D02 _ Alaeddine Mihoub, Social Intelligence Modeling, 2016.
D01 _ Steven Strachan, Vibrotactile Feedback Modeling, 2009.(with S.Zijp-Rouzier)

PhD students

S04 _ Paul Compagnon, Routine Prediction for eHealth Services. To be defended in 2021. Supervised by G.Lefebvre, S.Duffner, C.Garcia, link.
S03 _ Julien Cumin, Smart Home Data Mining. To be defended in 2018. Supervised by G.Lefebvre, F.Ramparany, J.Crowley, link.
S02 _ Samuel Berlemont, Automatic non linear metric learning. Defended in 2016. Supervised by G.Lefebvre, S.Duffner, C.Garcia, link.
S01 _ Rick Moritz, Routine activity extraction from local alignments in mobile phone context data. Defended in 2014. Supervised by G.Lefebvre, A.Pauchet, M.Mainguenaud, link.

Book chapter

C01 _ Inertial Gesture Recognition with Bidirectional Long Short-Term Memory Recurrent Neural Networks. G.Lefebvre, S.Berlemont, F.Mamalet, C.Garcia, Springer Series in Bio-Neuro-informatics Artificial Neural Networks - Methods and Applications, 2014.

International journals

J05 _ Wearables and Social Signal Processing for Smarter Public Presentations. A.Mihoub, G.Lefebvre, ACM Transaction on Interactive Intelligent Systems, 2018.
J04 _ HAR Using Place-based Decision Fusion in a Smart Home Context Management System. J.Cumin, F.Ramparany, G.Lefebvre, J.Crowley, Modeling and Using Context, 2018.
J03 _ Class-Balanced Siamese Neural Networks. S. Berlemont, G. Lefebvre, S. Duffner, C. Garcia, Neurocomputing, Elsevier, 2017.
J02 _ Evolution of Activities of Daily Living using Inertia Measurements: The Lunch and Dinner Activities. M. Berenguer, M-J. Bouzid, A. Makni, G. Lefebvre, N. Noury, Journal of the International Society for Telemedicine and eHealth, 2017.
J01 _ Fast-Learning Adaptive-Subspace Self-Organizing Map : An Application to Saliency-Based Invariant Image Feature Construction. H.Zheng, G.Lefebvre, C.Laurent, IEEE Transaction on Neural Networks, 2008.

International conferences

IC24 _ A semantic event approach to enrich device-free indoor localization data. T.Hassan, F.Ramparany, G.Lefebvre, EAI International Conference on Smart Objects and Technologies for Social Good, 2018.
IC23 _ Attitude Estimation for Posture Detection in eHealth Services. A.Makni, G.Lefebvre, IEEE Computer-Based Medical System, 2018.
IC22 _ Social Intelligence Modeling using Wearable Devices. A.Mihoub, G.Lefebvre, ACM IUI 2017. best paper - honourable mention
IC21 _ A Dataset of Routine Daily Activities in an Instrumented Home. J. Cumin, G.Lefebvre, F.Ramparany, J.Crowley, Ubiquitous Computing & Ambiant Intelligent, UCAmI, 2017. 
IC20 _ Human Activity Recognition Using Placed-Based Decision Fusion in smart Homes. J.Cumin, G.Lefebvre, F.Ramparany, J.Crowley, CONTEXT 2017.
IC19 _ Polar Sine-based Siamese Neural Network for Gesture Recognition. S. Berlemont, G.Lefebvre, S. Duffner, C. Garcia, ICANN 2016.
IC18 _ A priori Data and A posteriori Decision Fusions for Human Action Recognition. J.Cumin, G. Lefebvre, VISAPP 2016.
IC17 _ Recognizing Human Actions based on Extreme Learning Machines. G.Lefebvre, J.Cumin, VISAPP 2016.
IC16 _ Siamese Neural Network based Similarity Metric for Inertial Gesture Classification and Rejection. S.Berlemont, G.Lefebvre, S.Duffner, C.Garcia, IEEE FG 2015.
IC15 _ 3D Gesture Classification with Convolutional Neural Networks. S.Duffner, S.Berlemont, G.Lefebvre, C.Garcia, IEEE ICASSP 2014.
IC14 _ BLSTM-RNN based 3D Gesture Classification. G.Lefebvre, S.Berlemont, F.Mamalet, C.Garcia, Springer ICANN 2013.
IC13 _ Learning a Bag of Features based Nonlinear Metric for Facial Similarity. G.Lefebvre, C.Garcia, IEEE AVSS 2013.
IC12 _ Coupling Gestures with Tactile Feedback: A Comparative User Study. G.Lefebvre, E.Boyer, S.Zijp-Rouzier, ACM NordiCHI 2012.
IC11 _ Multi-Touch based Video Selection with an Audio Emotional Curve. G.Lefebvre, ACM CHI 2012.
IC10 _ Gesture based Interaction for visually Impaired People. S.Vidal, G.Lefebvre, ACM NordiCHI 2010.
IC09 _ OverView : Physically-Based Vibrotactile Feedback for Temporal Information Browsing. S.Strachan, G.Lefebvre, S.Zijp-Rouzier, ACM MobileHCI 2009.
IC08 _ A Probabilistic Self-Organizing Map For Facial Recognition. G.Lefebvre, C.Garcia, IEEE ICPR 2008.
IC07 _ A Heterogeneous Descriptor Fusion Process For Visual Concept Identification. G.Lefebvre, C.Garcia, IEEE Fusion 2008.
IC06 _ Facial Biometry by Stimulating Salient Singularity Masks. G.Lefebvre, C.Garcia, IEEE AVSS 2007.
IC05 _ Efficient Codebooks for Visual Concept Recognition by ASSOM Activation. G.Lefebvre, C.Garcia, NNAM 2006.
IC04 _ Objectionable Image Detection by ASSOM Competition. G.Lefebvre, H.Zheng, C.Laurent, ACM CIVR 2006.
IC03 _ A Cascade of Unsupervised and Supervised Neural Networks for Natural Images Classification. J.Ros, C. Laurent, G.Lefebvre, ACM CIVR 2006.
IC02 _ On the Basis Updating Rule of Adaptive-Subspace Self-Organizing Map (ASSOM). H.Zheng, C.Laurent, G.Lefebvre, Springer ICANN 2006.
IC01 _ Supervised Image Classification by SOM Activity Map Comparison.  G.Lefebvre, C.Laurent, J.Ros, C.Garcia, IEEE ICPR 2006.

International workshops

IW02 _ Inferring Availability for Communication in Smart Homes Using Context. J.Cumin, G.Lefebvre, F.Ramparany, J.Crowley, IEEE PerCom Workshop on Context and Activity Modeling and Recognition, 2018.  
IW01 _ A Multimodal Contact List to Enhance Remote Communication. A.Crossan, G.Lefebvre, S.Zijp-Rouzier, R.Murray-Smith, Mobile Social Signal Processing, LNCS Volume 8045, 2010.

French conferences

FC04 _ Apprentissage de métrique non linéaire par réseaux de neurones siamois : Application à la perception gestuelle. S.Berlemont, G.Lefebvre, S. Duffner, C. Garcia, RFIA 2016.
FC03 _ Fusion de caractéristiques inertielles pour la reconnaissance de gestes. S.Berlemont, G.Lefebvre, GRETSI 2013.
FC02 _ Sélection de singularités locales par stimulation d'une carte GHSOM. G.Lefebvre, C.Garcia, J.M. Salotti, J.Ros, GRETSI 2007.
FC01 _ Énergies ASSOM pour la détection d’objets. G.Lefebvre, C.Garcia, J.M. Salotti, CORESA 2006.

Patents

P20 _ Behavior Change Detection. G.Lefebvre, P.Compagnon, Orange 2018.
P19 _ Group Situation Detection with Semantic Analysis. T.Hassan, F.Ramparany, G.Lefebvre, Orange 2018.
P18 _ Eligibility Metric. D.Cibaud, G.Lefebvre, Orange 2018.
P17 _ Occupant Availability Prediction. G.Lefebvre J.Cumin, F. Ramparany, Orange 2017.
P16 _ Human Behavior Modeling. A.Mihoub, G.Lefebvre, Orange 2017.
P15 _ A method of recognizing user contexts. G.Lefebvre, Orange 2016. 
P14 _ A method of recognizing handwriting on a physical surface. G.Lefebvre, Orange 2015. 
P13 _ Localized knocking gestures for digit code inputs. G.Lefebvre, Orange 2014.
P12 _ Method for unlocking touch screen electronic device with haptic feedback. C.Masson, T.Perez-Segovia, S.Zijp-Rouzier, G.Lefebvre, Orange 2014.
P11 _ Contextual Gesture Recognition. R.Moritz, G.Lefebvre, Orange 2013.
P10 _ Automatic Gesture Segmentation. G.Lefebvre, S.Roux, E.Petit, Orange 2013.
P09 _ Tactile pairing. G.Lefebvre, FTR&D 2012.
P08 _ Audio and Tactile Signal Creation on Smartphones. G.Lefebvre, S.Zijp-Rouzier, A.Crossan, T.Dingler, R.Murray-Smith, FTR&D 2012.
P07 _ Object pairing. R.Ebel, G.Lefebvre, A.Gimeno, J.-P.Laval, E.Moniz, E.Tosi Brandi, C.Ramus, J.Augi, FTR&D 2011.
P06 _ Audio Vibration Tactile Feedback Generation Process for Gesture Interaction. G.Lefebvre, E.Petit, S.Zijp-Rouzier, S.Strachan, FTR&D 2010.
P05 _ Method for user interaction with multimedia contents. G.Lefebvre, A.Gimeno, FTR&D 2009.
P04 _ Method and device for video content classification by saliant neural temporal maps. G.Lefebvre, C.Garcia, FTR&D 2008.
P03 _ Construction of a neural network for the recognition of an image carrier. G.Lefebvre, C.Garcia, FTR&D 2008.
P02 _ A method for image classification with multi-modal neuron cards. G.Lefebvre, C.Garcia, FTR&D 2007.
P01 _ Method for classifying images by neuronal networks and a classifier of pre-learned images. H.Zheng, C.Laurent, G.Lefebvre, FTR&D 2006.

Thesis

T01 _ Sélection et Fusion de Signatures Visuelles Parcimonieuses, Application à la classification d'images. G.Lefebvre, december, 2007. Supervised by C.Garcia and J-M.Salotti, Jury: J.Ponce, H.Cardot, M.Daoudi, link.

Reviewer

CVPR’07, IHM’09, IHM’10, EURASIP’11, UAIS’11, ICANN’14, CHI’14, NordiCHI’14, CHI'15, IEEE TPAMI'15, ICHR'15, TVX'16, MobileHCI'16, UbiComp'16, RFIA'16,
HRI'17, IET CV'17, IEEE TNNLS'17, IET CV'18, IEEE TNNLS'18, IEEE Access'18, Sensors'18

Links

http://www.linkedin.com
http://www.researchgate.net
http://scholar.google.fr
http://hal.archives-ouvertes.fr
http://www.culturemobile.net
http://dblp.uni-trier.de
https://worldwide.espacenet.com