  | Ballouch, Z., Jeddoub, I., Hajji, R., Kasprzyk, J.-P., & Billen, R. (31 May 2024). Towards a Digital Twin of Liege: The Core 3D Model based on Semantic Segmentation and Automated Modeling of LiDAR Point Clouds. ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, X-4/W4-2024, 13-20. doi:10.5194/isprs-annals-x-4-w4-2024-13-2024  Peer Reviewed verified by ORBi |
 | Kharroubi, A., Ballouch, Z., Hajji, R., Yarroudh, A., & Billen, R. (09 April 2024). Multi-Context Point Cloud Dataset and Machine Learning for Railway Semantic Segmentation. Infrastructures, 9 (4), 71. doi:10.3390/infrastructures9040071 Peer Reviewed verified by ORBi |
 | Tamort, A., Kharroubi, A., Hajji, R., & Billen, R. (08 March 2024). 3D CHANGE DETECTION FOR SEMI-AUTOMATIC UPDATE OF BUILDINGS IN 3D CITY MODELS. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLVIII-4/W9-2024, 349-355. doi:10.5194/isprs-archives-xlviii-4-w9-2024-349-2024 Peer Reviewed verified by ORBi |
 | Jeddoub, I.* , Ballouch, Z.* , Hajji, R., & Billen, R. (2024). Enriched Semantic 3D Point Clouds: An Alternative to 3D City Models for Digital Twin for Cities? In T. H. Kolbe, A. Donaubauer, ... C. Beil (Eds.), Recent Advances in 3D Geoinformation Science - Proceedings of the 18th 3D GeoInfo Conference. Springer Science and Business Media Deutschland GmbH. doi:10.1007/978-3-031-43699-4_26 Peer reviewed* These authors have contributed equally to this work. |
 | Ballouch, Z., Hajji, R., Kharroubi, A., Poux, F., & Billen, R. (2024). Investigating Prior-Level Fusion Approaches for Enriched Semantic Segmentation of Urban LiDAR Point Clouds. Remote Sensing, 16 (2), 329. doi:10.3390/rs16020329 Peer Reviewed verified by ORBi |
 | Yarroudh, A., Nys, G.-A., & Hajji, R. (13 December 2023). 3D MODELING OF ROAD INFRASTRUCTURES ACCORDING TO CITYGML 3.0 AND ITS CITYJSON ENCODING. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLVIII-1/W2-2023, 63-70. doi:10.5194/isprs-archives-xlviii-1-w2-2023-63-2023 Peer Reviewed verified by ORBi |
 | Jeddoub, I., Nys, G.-A., Hajji, R., & Billen, R. (05 August 2023). Digital Twins for cities: Analyzing the gap between concepts and current implementations with a specific focus on data integration. International Journal of Applied Earth Observation and Geoinformation, 122, 103440. doi:10.1016/j.jag.2023.103440 Peer Reviewed verified by ORBi |
 | El Barhoumi, N., Hajji, R., Bouali, Z., Ben Brahim, Y., & Kharroubi, A. (20 October 2022). Assessment of 3D Models Placement Methods in Augmented Reality. Applied Sciences, 12 (20), 10620. doi:10.3390/app122010620 Peer Reviewed verified by ORBi |
 | Kharroubi, A., Poux, F., Ballouch, Z., Hajji, R., & Billen, R. (17 October 2022). Three Dimensional Change Detection Using Point Clouds: A Review. Geomatics, 2 (4), 457-486. doi:10.3390/geomatics2040025 Peer reviewed |
 | Ballouch, Z., Hajji, R., Poux, F., Kharroubi, A., & Billen, R. (16 July 2022). A Prior Level Fusion Approach for the Semantic Segmentation of 3D Point Clouds Using Deep Learning. Remote Sensing, 14 (14), 3415. doi:10.3390/rs14143415 Peer Reviewed verified by ORBi |
 | Hajji, R. (2013). Vers une méthode de conception de SIG 3D collaboratif [Doctoral thesis, ULiège - Université de Liège]. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/156447 |