Guillaume Touya

73 avenue de Paris · 94165 Saint-Mandé CEDEX · (+33)1 43 98 62 37 ·

Senior researcher in GI Science, geovisualization, and map generalization. Vice-head of LASTIG lab.

Member of the GEOVIS research team

Directeur de recherche IGN en sciences de l'information géographique, géovisualisation, et généralisation cartographique. Directeur adjoint du LASTIG.

Membre de l'équipe GEOVIS

Research Interests

Sujets de recherche

Interactions in multi-scale maps
Interactions dans les cartes multi-échelles
Scale and LOD issues in geovisualization
échelle et niveau de détail en géovisualisation
Automated cartography: text placement, schematization, conflation
Cartographie automatique: placement de texte, schématisation, recalage géométrique



Past jobs and roles in research

  • 10-09-2004

    Research assistant

    I start working at IGN France as a research assistant in the COGIT research team, assisting Cécile Duchêne and Anne Ruas on map generalisation.

  • 01-01-2008

    PhD student

    My PhD, obtained in June 2011, was supervised by Cécile Duchêne and Anne Ruas, and dealt with collaborative map generalisation.

  • 01-07-2011

    Senior researcher at COGIT research team, IGN

    After my PhD, I become a senior researcher, still in COGIT team, at IGN France. I'm part of the group on automated cartography and geovisualization.

  • 04-05-2017

    Habilitation defense

    Defense of my habilitation (HDR) in GI science, which allows in France to be the main supervisor of PhD students.

  • 15-07-2017

    Head of COGIT research team

    I take over the leadership if the COGIT research team from Sébastien Mustière.

  • 01-09-2018

    Vice-head of LASTIG lab

    I become the vice-head of the new LASTIG lab.


Université Paris-Est

Paris-Est University

Geographical Information Science
Sciences de l'information géographique
May 2017 Mai 2017
January 2008 - June 2011 Janvier 2008 - Juin 2011


Engineering school
école d'ingénieurs
Geographical Information Science
Sciences de l'information géographique
September 2001 - September 2004 Septembre 2001 - Septembre 2004

Université Paris-Est

Paris-Est University

Master in Geographical Information Science
DEA en Sciences de l'information géographique
September 2003 - September 2004 Septembre 2003 - Septembre 2004


Books and Chapters
Workshops and Posters
Other Publications (Technical Reports, Dissertations, Dissemination)

Invited Talks

Other research activities

Software development


Open source Python library for deep learning based map generalization.

Other research activities
PhD and post-doc Supervisions
Thèses et post-doc encadrés
  • Jean-François Girres (Post-doc, 2012-2013)
  • Jean-François Girres (Post-doc, 2012-2013)
  • Adrien Maudet (PhD, 2016), co-supervised with Cécile Duchêne (LASTIG) and Sébastien Picault (CRISTAL, Lille)
  • Adrien Maudet (PhD, 2016), encadrant, thèse dirigée par Cécile Duchêne (LASTIG) et Sébastien Picault (CRISTAL, Lille)
  • Jérémie Ory (Post-doc, 2017-2018)
  • Jérémie Ory (Post-doc, 2017-2018)
  • Marion Dumont (PhD, 2018), co-supervised with Cécile Duchêne (LASTIG)
  • Marion Dumont (PhD, 2018), co-dirigée avec Cécile Duchêne (LASTIG)
  • Quy Thy Truong (PhD), co-supervised with Cyril de Runz (LIFAT, Tours)
  • Quy Thy Truong (PhD), co-dirigée avec Cyril de Runz (LIFAT, Tours)
  • Sébastien Biniek (PhD), co-supervised with Gilles Rouffineau (ESAD Valence)
  • Sébastien Biniek (PhD), co-dirigée avec Gilles Rouffineau (ESAD Valence)
  • Gauthier Filières-Riveau (PhD), co-supervised with Jean-Marie Favreau and Vincent Barra (LIMOS, Clermont-Ferrand)
  • Gauthier Filières-Riveau (PhD), co-dirigée avec Jean-Marie Favreau et Vincent Barra (LIMOS, Clermont-Ferrand)
  • Azelle Courtial (PhD), co-supervised with Xiang Zhang (Wuhan University, China)
  • Azelle Courtial (PhD), co-dirigée avec Xiang Zhang (Wuhan University, Chine)
Internship and student project Supervisions
Encadrement de stagiaires et projets d'étudiants
  • Achraf El Ayedi (2019), deep learning for mountain roads generalisation
  • Hugo Boulze, Anouk Schleich (2018-2019), derivation of contour lines from a DTM in karstic plateaus
  • Valentin Hue, Priscillia Labourg (2018-2019), deep learning experiments for building generalisation
  • Matthieu Dufait (2017), anonymization of OpenStreetMap data, co-supervised with Arnaud Le Guilcher
  • Justin Berli (2016), experiments on the distribution of map generalisation processes, co-supervised with Imran Lokhat and Nicolas Regnauld
  • Blandine Decherf, Mayeul Lalanne (2015-2016), clutter measures for maps
  • Matthieu Baley (2013), LOD Harmonisation of OpenStreetMap data
  • Camille Delahaye (2010), Sensitivity analysis of map generalisation processes to the way urban areas are delineated
  • Aurélien Velten (2007), 3D building generalisation
  • Nicolas Culson (2006), Highway interchange detection and generalisation
  • 2018 Henry Johns Award for the most outstanding paper published in 2017 in the Cartographic Journal