On September 18, 2025, Dr. Nourhan Bachir defended her PhD thesis, “Criticality as a Learnable Property: Scalable AI Techniques for Critical Link Analysis in Urban Traffic Networks”, supervised by Roland Billen (ULiège) and Chamseddine Zaki (AUM). Her work redefines road-link criticality as a learnable property, introducing scalable AI and spatial analysis methods to enhance urban mobility resilience.
GeoScITY Lab and the University of Liège warmly congratulate Dr. Bachir on this remarkable achievement.

GeoScITY Lab contributed to the 3D GeoInfo & Smart Data Smart Cities joint conference, held in Kashiwa, Japan, from September 2–5. The conference was hosted by the Center for Spatial Information Science (CSIS), University of Tokyo, in collaboration with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT). Huge thanks to the local organizing committee for making this event a success!

We are delighted to share that Jean-Paul Kasprzyk, senior researcher in the GeoScITY lab, has been appointed Assistant Professor at ULiège. His teaching will focus on the GIS domain, including spatial data management and spatial analysis. Congratulations, Jean-Paul!

The picture was taken during the welcome seminar with the other new professors and ULiège authorities.

GeoScITY is proud to be coordinator for the project GIS4IORT funded by Chist-Era. This project gathers partners from Poland, France and Belgium and aims to develop a plug-and-play middleware for integrating robot and sensor data with GIS Tools in a Cloud Environment.

The GeoScITY Lab at the University of Liège proudly announces the successful defense of a doctoral thesis in July, 2025. This work advances the field of 3D change detection by addressing key challenges in analyzing urban and railway environments from bi-temporal LiDAR point clouds, with direct applications to digital twins and infrastructure monitoring.

We are pleased to welcome three talented researchers currently contributing to ongoing research projects at GeoScITY, University of Liège.

The GeoScITY Lab at the University of Liège proudly announces the successful defenses of two doctoral theses in 2024. Dr. Siham El Yamani’s work focuses on developing a 3D property valuation model using BIM and CIM technologies for precise and dynamic property assessments. Dr. Zouhair Ballouch’s research enhances semantic segmentation of large-scale 3D point clouds with Deep Learning techniques, advancing the creation of Urban Digital Twins.

GeoScITY Lab, in collaboration with IAV Hassan II's Geomatics and Land Surveying Department, participated in the 8th ISPRS Workshop on Low-Cost 3D (Dec 12–13, 2024, Brescia, Italy). The team presented five research contributions (four oral presentations and one poster) focusing on advancements in 3D data integration, modeling, and analysis. Topics included urban digital twins, automated LiDAR point cloud processing, and parametric-based 3D reconstruction.

GeoScITY Lab published a peer-reviewed research paper addressing challenges in data integration and interoperability within Urban Digital Twins (UDTs). The study identified key data integration levels corresponding to various stages of the Digital Twin lifecycle and provided insights into how data can be incorporated, embedded, and updated in UDTs. This research contributes to enhancing the scalability and effectiveness of UDT frameworks for urban planning and management.

Ces 15, 16 et 17 septembre, nous avons eu le plaisir d’accueillir Dominic Tremblay, Charles Gignac et Yannick Duguay du Centre Géomatique du Québec pour échanger sur les Jumeaux Numériques Urbains. 

An intern have recently joined us from Polytech Nantes as part of a three months mobility program. Over the next weeks, he will contribute to the ongoing Digital Twins' projects by enhancing the viewer interface for 3D city models.