Julien Perret

Julien Perret is a senior researcher at the National Institute of Geographic and Forest Information (IGN) in France, affiliated with the LASTIG laboratory and STRUDEL research team. His work spans geographical information science, urban dynamics, and historical cartography.

• Current Affiliation: National Institute of Geographic and Forest Information (IGN)
• Research Team: LASTIG, STRUDEL
• Academic Rank: Senior Researcher (Directeur de Recherche)

Education

• Habilitation (HDR) in Geographical Information Science, Université Paris-Est (2016)
• PhD in Computer Science, Université Rennes 1 (2006)
• Engineering Degree in Computer Science, INSA Rennes (2002)

Research Interests
Perret's research focuses on urban dynamics through computational approaches, including agent-based modeling and 3D urban simulation. He investigates historical cartographic data like the Napoleonic land registry and Cassini Carte de France to understand long-term urban evolution. His work integrates geospatial data with epidemiological modeling using digital twins, particularly for pandemic simulations.

Scientific Contributions
Key publications include:

• 2025: Building change models for urban densification studies
• 2024: Historical map vectorization benchmarks
• 2017: Scalable point cloud management systems
• 2015: 3D analysis of urban regulation impact
• 2005: Procedural geometry modeling with FL-systems

Advising and Collaborations
Perret has supervised multiple PhD students and collaborated on projects like SoDUCo (1789-1950 Paris urban dynamics) and iSpace&Time (4D GIS for city modeling). He contributes to open-source GIS tools like GeOxygene.