Samy LABSIR

Associate professor, IPSA
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Présentation

Samy Labsir is a associate professor at IPSA Toulouse in data science and statistics. A the same time, he carries out research works in statistical signal processing within the laboratory TéSA. He obtained its PhD Degree at University of Bordeaux (France), IMS laboratory, in the Signal&Image group with collaboration of CEA-CESTA, in December 2020. The title is "Méthodes statistiques fondées sur les groupes de Lie pour le suivi d'un amas de débris spatiaux". and was supervised by Audrey Giremus (Full professor, Bordeaux University) and Brice Yver (Engineer, CEA-CESTA). The associated manuscript is disponible here and the presentation here. From October 2020 to November 2022, he was a post-doctoral research assistant at ISAE-SUPAERO (Toulouse, France) in DEOS department, NAVIRRES research group under the supervision of Gael Pages (Researcher, ISAE-SUPAERO) and Eric Chaumette (Full professor, ISAE-SUPAERO) . Its research is focused on filtering, estimation and machine learning methods for statistical signal processing. He works on statistical (non)-bayesian methods which use the non-Euclidean properties (Lie groups and Riemannian manifolds) of both unknown parameters and observations. He also investigates on the development of (non)-Bayesian error bound for parameters evolved on (non)-Euclidean space (Lie groups).
Its research works have mainly been built for three applications:

  1. radar target tracking : filtering and error bound on Lie groups for parameters estimated by a radar system,
  2. computer vision : SLAM filtering on Lie groups from monocular camera measurements, clustering on Lie groups
  3. GNSS navigation : statistical studies of GNSS loop tracking, error bound on Lie groups for RTK positioning.


Compétences

Estimation on Lie groups GNSS Radar Computer vision Statistical signal processing Machine learning

Publications

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Publications

Filtering and machine learning on Riemannian manifolds and Lie groups

Samy Labsir , Sara El Bouch , Claudio Bordin , Marcelo G.S. Bruno

Signal Processing, 2026, 238, pp.110114. ⟨10.1016/j.sigpro.2025.110114⟩

Article dans une revue hal-05215673v1
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Cramér-Rao Bound for Lie Group Parameter Estimation With Euclidean Observations and Unknown Covariance Matrix

Samy Labsir , Sara El Bouch , Alexandre Renaux , Jordi Vilà-Valls , Eric Chaumette

IEEE Transactions on Signal Processing, 2025, 73, pp.130-141. ⟨10.1109/TSP.2024.3445606⟩

Article dans une revue hal-04895558v1

Cramér-Rao Bound for Lie Group Parameter Estimation with Euclidean Observations and Unknown Covariance Matrix

Samy Labsir , Sara El Bouch , Alexandre Renaux , Jordi Vilà-Valls , Eric Chaumette

IEEE Transactions on Signal Processing, 2024, pp.1-12. ⟨10.1109/TSP.2024.3445606⟩

Article dans une revue hal-04850382v1
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Barankin, McAulay–Seidman and Cramér–Rao bounds on matrix Lie groups

Samy Labsir , Alexandre Renaux , Jordi Vilà-Valls , Eric Chaumette

Automatica, 2023, 156, pp.111199. ⟨10.1016/j.automatica.2023.111199⟩

Article dans une revue hal-04172575v2

An intrinsic Bayesian bound for estimators on the Lie groups SO(3) and SE(3)

Samy Labsir , Audrey Giremus , B. Yver , Thomas Benoudiba-Campanini

Signal Processing, 2023, 214, pp.109232. ⟨10.1016/j.sigpro.2023.109232⟩

Article dans une revue hal-04352851v1
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Lie Group Modelling for an EKF-Based Monocular SLAM Algorithm

Samy Labsir , Gaël Pagès , Damien Vivet

Remote Sensing, 2022, 14 (3), pp.571. ⟨10.3390/rs14030571⟩

Article dans une revue hal-03549470v1

Joint shape and centroid position tracking of a cluster of space debris by filtering on Lie groups

S. Labsir , A. Giremus , B. Yver , T. Benoudiba–campanini

Signal Processing, 2021, 183, pp.108027. ⟨10.1016/j.sigpro.2021.108027⟩

Article dans une revue hal-03257315v1
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A New Geometric Regression with Inputs-Outputs on Matrix Lie Groups

Serigne Daouda Pene , Samy Labsir , Julien Lesouple , Jean-Yves Tourneret

Geometric Science of Information (GSI 2025), Oct 2025, Saint-Malo, France. pp.271-279, ⟨10.1007/978-3-032-03924-8_28⟩

Communication dans un congrès hal-05336520v1

Lie Group Bayesian Modeling of the von Mises Concentration Parameter

Esteban Morales-Aguirre , Samy Labsir , Benoît Priot , Clément Gazzino , Gaël Pagès

2025 28th International Conference on Information Fusion (FUSION), FUSION, Jul 2025, Rio de Janeiro, France. pp.1-6, ⟨10.23919/FUSION65864.2025.11124059⟩

Communication dans un congrès hal-05470016v1

Lie Group Based Approach for GNSS Signal Phase Modeling

Esteban Morales-Aguirre , Samy Labsir , Benoît Priot , Clément Gazzino , Gaël Pages

ICL-GNSS 2025 - International Conference on Localization and GNSS, Jun 2025, Rome, Italy. pp.1-6, ⟨10.1109/ICL-GNSS65520.2025.11046120⟩

Communication dans un congrès hal-05215678v1
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New Insights into Lower Bound for Lie Groups and their Applications

Sara El Bouch , Samy Labsir , Alexandre Renaux , Jordi Vilà-Valls , Eric Chaumette

2025 59th Annual Conference on Information Sciences and Systems (CISS), Mar 2025, Baltimore, United States. ⟨10.1109/CISS64860.2025.10944664⟩

Communication dans un congrès hal-05263411v1
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Recurrent Neural Networks Modelling based on Riemannian Symmetric Positive Definite Manifold

Léa Dubreil , Samy Labsir , Etienne Rouanet-Labé , Gaël Pages

EUSIPCO, Aug 2024, Lyon, France

Communication dans un congrès hal-04708219v1
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Full Slepian-Bangs Formula for Fisher Information on Lie Groups

Sara El Bouch , Samy Labsir , Alexandre Renaux , Jordi Vilà-Valls , Éric Chaumette

58th Asilomar Conference on Signals, Systems, and Computers, Oct 2024, Pacific Grove, United States

Communication dans un congrès hal-04760572v1
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An Intrinsic Modified Cramér-Rao Bound on Lie Groups

Sara El Bouch , Samy Labsir , Alexandre Renaux , Jordi Vilà-Valls , Eric Chaumette

2024 International conference on information fusion (FUSION 2024), Jul 2024, Venise, Italy. ⟨10.23919/fusion59988.2024.10706414⟩

Communication dans un congrès hal-04620291v1

Theoretical Performance Analysis of GNSS Tracking Loops

Samy Labsir , Gaël Pages , Lorenzo Ortega , Jordi Vilà-Valls , Éric Chaumette

2023 IEEE/ION Position, Location and Navigation Symposium (PLANS), Apr 2023, Monterey, France. pp.946-951, ⟨10.1109/PLANS53410.2023.10139980⟩

Communication dans un congrès hal-04541103v1
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Intrinsic Slepian-Bangs type formula for parameters on LGs with unknown measurement noise variance

Samy Labsir , Alexandre Renaux , Jordi Vilà-Valls , Eric Chaumette

Asilomar Conference on Signals, Systems, and Computers, Oct 2023, Pacific Groove, United States

Communication dans un congrès hal-04314563v1
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Cramér-Rao Bound on Lie Groups with Observations on Lie Groups: Application to SE(2)

Samy Labsir , Alexandre Renaux , Jordi Vilà-Valls , Éric Chaumette

ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Jun 2023, Rhodes Island, Greece. ⟨10.1109/ICASSP49357.2023.10096257⟩

Communication dans un congrès hal-04162633v1

Robust M-Type Error-State Kalman Filters for Attitude Estimation

Andrea Belles , Daniel A. Medina , Paul Chauchat , Samy Labsir , Jordi Vilà-Valls

2023 31st European Signal Processing Conference (EUSIPCO), Sep 2023, Helsinki, Finland. ⟨10.23919/eusipco58844.2023.10289871⟩

Communication dans un congrès hal-04356708v1
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Borne de Cramér-Rao sur groupe de Lie avec observations sur groupe de Lie : application à SO(2)

Samy Labsir , Alexandre Renaux , Jordi Vilà-Valls , Eric Chaumette

GRETSI 2023 - XXIXème Colloque Francophone de Traitement du Signal et des Images, Aug 2023, Grenoble, France

Communication dans un congrès hal-04172585v1

An Intrinsic McAulay-Seidman Bound for Parameters Evolving on Matrix Lie Groups

Samy Labsir , Daniel Medina , Jordi Vilá-Valls , Eric Chaumette

2022 56th Asilomar Conference on Signals, Systems, and Computers, Oct 2022, Pacific Grove, France. pp.71-75, ⟨10.1109/IEEECONF56349.2022.10051899⟩

Communication dans un congrès hal-04537127v1

A Lie-group based modelling for centroid and shape estimation of a cluster of space debris

Samy Labsir , Audrey Giremus , Brice Yver , Thomas Benoudiba-Campanini

2020 28th European Signal Processing Conference (EUSIPCO), Jan 2021, Amsterdam, France. pp.960-964, ⟨10.23919/Eusipco47968.2020.9287641⟩

Communication dans un congrès hal-04538262v1

Modèle et algorithme sur groupe de Lie pour l’estimation de la forme d’un amas de débris spatiaux

Samy Labsir , Audrey Giremus , Brice Yver , Thomas Benoudiba-Campanini

Colloque Gretsi, Aug 2019, Lille, France

Communication dans un congrès hal-02531554v1

Tracking a cluster of space debris in low orbit by filtering on Lie groups

Samy Labsir , Audrey Giremus , Brice Yver , Thomas Benoudiba-Campanini

IEEE Int. Conf. Acoust., Speech, and Signal Processing (ICASSP), May 2019, Brighton, United Kingdom

Communication dans un congrès hal-02531539v1