Clement Mallet

Senior researcher in Geospatial Computer Vision.
Director of the LASTIG laboratory, Univ. Gustave Eiffel, IGN, ENSG (2021-2025).
Editor-in-Chief of the ISPRS Journal of Photogrammetry and Remote Sensing.

Education

Publications

Scientific Animation

I am deeply involved in the International Society of Photogrammetry and Remote Sensing (ISPRS) since 2008.

• 2022: Thematic Session Chair of the XXIVth ISPRS Congress
• 2020 and 2021: Program Chair of the XXIVth ISPRS Congress
• 2016-2022: Secretary of the ISPRS Working Group II/6 on "Large-scale Machine Learning" of the Technical Commission II
• 2015: Program Chair of the ISPRS Geospatial Week (La Grande Motte, France)
• 2012-2016: Chair of the ISPRS Working Group III/3 on "Image Sequence Analysis" of the Technical Commission III
• 2008-2012: Secretary of ISPRS Technical Commission III on "Photogrammetric Computer Vision and Image Analysis".

• ISPRS Journal of Photogrammetry and Remote Sensing (IF2023: 10.6):
• Starting 2021: Editor-in-chief
• 2018-2020: Associate Editor
• 2013-2017: Member of the Advisory Editorial Board.
• Photogrammetric Engineering & Remote Sensing (IF: 3.15): Associate editor (2016-2020).
• Revue Française de Photogrammétrie et de Télédétection (RFPT, IF: 0.35):
• 2016-2020: Associate editor
• 2011-2016: Editor-in-Chief
• Guest editors for several special issues:
• ISPRS Journal of Photogrammetry and Remote Sensing:
• Geospatial Computer Vision (2018);
• Multitemporal remote sensing data analysis (2015);
• IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (IF: 4.715):
• Exploring the Potential of Urban Remote Sensing (2025)
• Paving the Way for the Future of Urban Remote Sensing (2020)
• Urban Remote Sensing for Smarter Cities (2018)
• GeoVision: Computer Vision for Geospatial Applications (2017).
• IEEE Geoscience and Remote Sensing Letters (IF: 5.343): Analysis and Applications of Full-waveform lidar (2013).
• Remote Sensing (IF: 5.349):
• Operational Land Cover/Land Use mapping (2019)
• Hyperspectral Imagery for Urban Environment (2019)

• Joint Urban Remote Sensing Event – JURSE – 2027 (Amsterdam, The Nederlands), 2025 (Tunis, Tunisia), 2023 (Heraklion, Greece), 2022 (Medellin, Colombia), 2019 (Vannes, France), 2017 (Dubai, UAE): technical co-chair with Monika Kuffer (ITC, The Nederlands, Hannes Taubenbock (DLR, Germany), Devis Tuia (EPFL, Switzerland), and Eleanor Stokes (NASA, USA).
• USM3D: CVPR workshop on Urban Scene Modeling: Where Vision Meets Photogrammetry and Graphics, 2024 and 2025. Organiser.
• XXIVth ISPRS Congress (Nice, France): program chair (2020-2021) and thematic session chair (2022)
• IGN/EuroSDR/LandSense Workshop on "The use of VGI for producing and maintaining authoritative LULC data", November 2020 (Virtual): organizer with Ana-Maria Raimond (IGN, France), Joep Crompvoets (KU Leuven, Belgium), Inian Moorthy (IISA, Austria) and Bénédicte Bucher (IGN, France).
• EuroSDR workshop "Geoprocessing and Archiving Historical Aerial Images", 2019 (Paris, France): organizer with EuroSDR, Sébastien Giordano (IGN, France), Fabio Remondino (FBK, Italy) and Jon Arne Trollvik (Kartverket, Norway).
• 3rd EuroSDR workshop "Preparations for the Sentinels in Europe", 2018 (Oslo, Norway): Fwith EuroSDR, Norwegian Space Centre and the Norwegian Mapping Authority.
• Annual French conference on photogrammetry and remote sensing 2018 (Marne la Vallée, France): program chair
• ISPRS/IEEE ICCV’15 workshop on Multi-Sensor Fusion for Outdoor Dynamic Scene Understanding (Santiago, Chile): program co-chair with Alper Yilmaz (OSU, USA), Yury Vizilter (GosNIASS, Russia) and Michael Ying Yang (TU Dresden, Germany)
• ISPRS Geospatial Week 2015 (La Grande Motte, France): program chair
• Image Sequence Analysis’15 (ISA’15), ISPRS Geospatial Week 2015 workshop (La Grande Motte, France): co-chair with Alper Yilmaz (OSU, USA), Yury Vizilter (GosNIASS, Russia) and Michael Ying Yang (TU Dresden, Germany)
• ISPRS/IEEE CVPR’15 workshop on Multi-Sensor Fusion for Outdoor Dynamic Scene Understanding (Boston, USA) : program co-chair with Alper Yilmaz (OSU, USA), Yury Vizilter (GosNIASS, Russia) and Michael Ying Yang (TU Dresden, Germany)
• EuroSDR workshop 2014 "Preparation for Sentinel-2 in Europe" (Oslo, Norway): co-organization with Jon Arne Trollvik (Norwegian Mapping Authority, Norway), Arnt Kristian Gjertsen (Norwegian Forest and Landscape Institute, Norway) and Guro Dahle Strøm (Norwegian Space Centre, Norway)
• ISPRS/IEEE CVPR’14 workshop on Multi-Sensor Fusion for Outdoor Dynamic Scene Understanding (Colombus, USA): program co-chair with Alper Yilmaz (OSU, USA), Yury Vizilter (GosNIASS, Russia) and Michael Ying Yang (LUH, Germany).
• Sixth ACM SIGSPATIAL International Workshop on Computational Transportation Science 2013 (Orlando, USA): co-chair with Monika Sester (LUH, Germany) and John Krumm (Microsoft, USA)
• Image Sequence Analysis’13 (ISA’13), ISPRS SSG’13 workshop (Antalya, Turkey): co-chair with Alper Yilmaz (OSU, USA), Yury Vizilter (GosNIASS, Russia) and Michael Ying Yang (LUH, Germany)
• Analyse de scènes urbaines en image et vision, GdR ISIS workshop (Paris, France, 2012): co-organisor with Florent Lafarge (INRIA, France).

• EarthVision workshop @CVPR, 2022-2025
• Atelier TEMU (Télédétection pour l'Etude du Milieu Urbain), 2025
• ESA Living Planet Symposium, Bonn, Germany, May 2021
• International Joint Conference on Computer Vision Theory and Applications, Valletta, Malta, February 2020
• ESA Phi-Unet challenge on building detection with VHR data (UNOSAT / CERN).
• Second International Workshop on Artificial Intelligence for 3D Big Spatial Data Processing, In conjunction with IEEE ISM'19, San Diego, USA, December 2019.
• International Land Use Symposium (ILUS), Paris, France, December 2019.
• International Symposium on Applied Geoinformatics (ISAG), Istanbul, Turkey, November 2019.
• IEEE IGARSS 2019, Yokohama, Japan, July 2019: student paper competition
• EARTHVISION 2019, IEEE/ISPRS Workshop. Large Scale Computer Vision for Remote Sensing Imagery, In conjunction with CVPR'19, June 2019.
• PCV 2019, Workshop on Photogrammetric Computer Vision, In conjunction with CVPR'19, June 2019.
• ISPRS Semantics3D workshop, Enschede, The Nederlands, June 2019
• ESA Living Planet Symposium, Milano, Italy, May 2019
• IEEE IGARSS 2018, Valencia, Spain, July 2018: student paper competition
• ISPRS Technical Commission II symposium, Riva del Garda, Italy, June 2018.
• EORSA 2018, Fifth International Workshop on Earth Observation and Remote Sensing Applications, Xi'an, China, June 2018: program co-chair
• GEOBIA 2018, Montpellier, France, June 2018.
• MSF 2017, IEEE/ISPRS Workshop on Multi-Sensor Fusion for Dynamic Scene Understanding. In conjunction with ICCV'17, October 2017.
• EARTHVISION 2017, IEEE/ISPRS Workshop. Looking from above: When Earth observation meets vision. In conjunction with CVPR'17, July 2017.
• IEEE IGARSS 2017, Forth Worth, USA, July 2017: student paper competition
• ISPRS Hannover Workshop 2017, Hannover, Germany, June 2017
• GEOBIA 2016, Enschede, The Netherlands, September 2016
• ISPRS Congress 2016, Prague, Czech Republic, July 2016: member of the International Program Committee
• Reconnaissance des Formes et Intelligence Artificielle (RFIA) 2016, Clermont-Ferrand,France, June-July 2016
• EARTHVISION’15: IEEE/ISPRS Workshop. Looking from above: When Earth observation meets vision. In conjunction with CVPR’15, Boston, USA, June 2015
• JURSE 2015, Lausanne, Switzerland, March-Avril 2015
• Photogrammetric Computer Vision (PCV’14), Zürich, Switzerland, September 2014
• The ISPRS Workshop on 3D Virtual City Modeling (VCM’13), in conjunction with CRV’13, Regina, Canada, May 2013
• IEEE International Workshop on Point Cloud Processing (PCP’12), in conjunction with CVPR’12, Providence, USA, June 2012
• IEEE/ISPRS Workshop on Computer Vision for Remote Sensing of the Environment (CVRS’11), in conjunction with ICCV’11, Barcelona, Spain, November 2011
• ISPRS Photogrammetric Image Analysis (PIA’11), Munich, Germany, October 2011
• ISPRS Photogrammetric Computer Vision and Image Analysis symposium (PCV’10), Paris, France, September 2010.

• Journals: Plos One, IEEE Transactions on Image Processing, Computer Vision and Image Understanding, Remote Sensing of Environment, IEEE Transactionson Geoscience and Remote Sensing, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Geoscience and Remote Sensing Letters, ISPRS Journal of Photogrammetry and Remote Sensing, Photogrammetric Engineering &Remote Sensing, Remote Sensing, Applied Optics, Optics Express, IEEE Geoscience and Remote Sensing Magazine, International Journal of Remote Sensing, Information Fusion
• Conferences: IEEE CVPR (2024, 2023, 2022, 2021 outstanding reviewer acknowledgment, 2020, 2019 outstanding reviewer acknowledgment, 2018 outstanding reviewer acknowledgment, 2017, 2016), BMVC (2018, 2017 outstanding reviewer award), ECCV (2024 outstanding reviewer acknowledgment, 2022, 2018, 2016), IEEE ICCV (2023 outstanding reviewer acknowledgment, 2021, 2019, 2017, 2015 outstanding reviewer award), ACCV (2018, 2016), AAAI (2021, 2020), RFIA (2016, 2014), Gretsi (2025, 2019, 2015, 2013), Digital Heritage Congress (2013), ISPRS Conference on "Serving Society with Geoinformatics" (2013), ISPRS Commission VII symposium (2010), ISPRS Laserscanning (2009), IEEE ICIP (2009-2012).
• Funding agencies: ANR, ANRT (France), STAE (France), NSFC, BELSPO (Belgium), DFG (Germany), FWF, NWO (The Nederlands), SATW (Switzerland).

• Since 2013: Member of the scientific council of Theia.
• Since 2016: Member of the Governing Board of the French Society of Photogrammetry and Remote Sensing (SFPT);
• Since 2018: Member of the Executif Board of Theia, the French national infrastructure on spatial imagery for land cover applications.
• Since Dec. 2019: Member of the Scientific Council of MathNum department of INRAe;
• Since 2023: Member of the Council of the Institut Gaspart Monge;
• 2017-2019: Member of the advisory commission of IRSTEA "Territoires" department;

Teaching material may be provided upon demand. Lectures are mainly given in ENSG-Geomatique, the French engineer school in geomatics and geographic information, both for the engineer degree and various masters of science.

• Image processing [lectures+exercices]: Segmentation techniques - Object-based image analysis - Change detection - Time-series image analysis
• Machine learning [lectures+exercices]: Unsupervised and supervised classification - Feature selection & reduction - Graphical models
• Remote Sensing [lectures]: Introduction - fundamental principles - Sensors
• Airborne laser scanning [lectures+exercices]: Introduction & physical principles - 3D point cloud processing - Terrain and surface modelling - Forest analysis & 3D city reconstruction - Full-waveform data processing
• Land-cover mapping and change detection: I gave 2-weeks of e-learning lectures and exercices for EuroSDR, which was pretty challenging and fun. EuroSDR Eduserv 13 (2015) -- EuroSDR Eduserv 12 (2014)

• Emilie Vautier (PhD, 2024-), supervised with Cédric Véga (LIF). 3D Lidar and photogrammetric point clouds for forest monitoring.
• Léopold Jouffroy (PhD, 2024-), supervised with Béatrice Fervers, Astrid Costes, Lény Grassot (Centre Léon Bérard). Historical image analysis for land-cover mapping.
• Yanis Benidir (PhD, 2023-), supervised with Nicolas Gonthier (LASTIG). Change Detection with Earth Observation imagery.
• Guillaume Astruc (PhD, 2023-), supervised with Loïc Landrieu (Ecole des Ponts) and Nicolas Gonthier (LASTIG). Fundation Models in Earth Observation (funded by CNES and IGN-France).
• Hussein El Amouri (PhD, 2020-2023), supervised by Pierre Gançarski and Tom Lampert (ICube). Generic adaptative clustering methods for change detection (funded by ANR).
• Erwan Giry-Fouquet (PhD, 2018-), supervised by Mathieu Fauvel (CESBIO). Large-scale semi-supervised learning (funded by ANR).
• Hermann Tagné (PhD, 2018-2023), co-supervised with Arnaud Le Bris (LASTIG) and David Monkam (Univ. Douala, Cameroon). Updating the national land-cover geodatabase with airborne and stallite images (funded by INC Cameroon).
• Yizi Chen (PhD, 2023), supervised by Julien Perret (LASTIG) and Joseph Chazalon (LRDE, EPITA). Semi-automatic vectorization and georeferencing of old maps (funded by ANR). Now at ETH Zurich.
• Luc Baudoux (PhD, 2023), co-supervised with Jordi Inglada (CESBIO). Multi-scale multi-label land-cover mapping (funded by ANR). Now at CCR.
• Anatol Garioud (PhD, 2022), co-supervised with Silvia Valero (CESBIO) and Sébastien Giordano (LASTIG). Permanent grassland moniroting using multi-modal time series of satellite images (funded by CNES and ADEME). Now at IGN.
• Vivien Sainte-Fare-Garnot (PhD, 2022), supervised by Nesrine Chehata (ENSEGID), Loic Landrieu (LASTIG) and Sébastien Giordano (LASTIG). Learning spatio-temporal representations of satellite time series for large-scale crop mapping (funded by ASP). Now at ETH Zurich.
• Oussama Ennafii (PhD, 2019), co-supervised with Florent Lafarge (INRIA) and Arnaud Le Bris (LASTIG). Semantic-aware quality evaluation of 3D building models. A scalable approach (funded by IGN). Now at Upciti.
• Tristan Postadjian (PhD, 2019), co-supervised with Hichem Sahbi (LIP6) and Arnaud Le Bris (LASTIG). Towards large-scale land-cover mapping with VHR satellite imagery (funded by IGN). Now at AquilaData company.
• Clément Dechesne (PhD, 2017), co-supervised with Valérie Gouet and Arnaud Le Bris (LASTIG). Semantic segmentation of forest stands with VHR multispectral imagery and 3D airborne lidar data (funded by IGN). Now post-doc at CNES.
• Adrien Gressin (PhD, 2014), supervised by Nicole Vincent (Univ. Paris 5) and Nicolas Paparoditis (IGN). Updating land-cover geodatabases in natural environments with VHR satellite imagery (funded by IGN). Now professor at HEIG-VD, Switzerland.

• 2024: Outstanding Reviewer acknowledgment - ECCV 2024
• 2023: Outstanding Reviewer acknowledgment - ICCV 2023
• 2021: Outstanding Reviewer acknowledgment - CVPR 2021
• 2020: EuroSDR best PhD thesis in 2020: Oussama Ennafii (co-supervised with Florent Lafarge and Arnaud Le Bris).
• 2019: Outstanding Reviewer acknowledgment - CVPR 2019
• 2018: Outstanding Reviewer acknowledgment - CVPR 2018
• 2017: Outstanding Reviewer acknowledgment - BMVC 2017
• 2016: Schwidefsky Medal, from the ISPRS and the German Society of Photogrammetry and Remote Sensing, with Charles Toth (OSU, USA)
• 2016: Best paper award - GEOBIA 2016. M. Weinmann, C. Mallet, M. Brédif. Detection, Segmentation and Localization of Individual Trees from MMS Point Cloud Data.
• 2015: Outstanding Reviewer Award - ICCV 2015
• 2014: Best paper Award, Honourable Mention - ISPRS Photogrammetric Computer Vision 2014. M. Weinmann, B. Jutzi, C. Mallet. Semantic 3D scene interpretation: a framework combining optimal neighborhood size selection with relevant features.
• 2014: Outstanding Reviewer Award - ISPRS Journal of Photogrammetry and Remote Sensing
• 2010: Young researcher award, French Image and Vision community (GDR ISIS, CNRS), with Florent Lafarge (INRIA, France)