Hi, I'm Olivier STOCKER. I publish my work on remote sensing here, focusing on applications ranging from urban spread monitoring with satellite imagery to railway 3D point cloud classification and boreal forest semantic segmentation. My research sits at the intersection of Computer Vision, Ecology, and Geomatics. This website serves as a platform to share research updates, code packages, and interactive visual materials for my papers.
Feel free to reach out via stocker.olivier@gmail.com.
PhD Research
My research aims to improve the automation of 3D point cloud semantic segmentation in boreal forest environments. Because ground-truth training data for these ecosystems is scarce, I investigate how computer-simulated LiDAR point clouds can enhance the training of deep learning architectures commonly used for semantic segmentation. Explore PhD Work & Visualizations.
Scientific Contributions
Journal & Conference Papers
- O. Stocker, R. Mahmoudi Kouhi, O. Reisi Gahrouei, T. Badard, E. Guilbert: QC-SF: Improving Computer Vision for Airborne LiDAR Point Clouds of Boreal Forests with Quebec Simulated Forest Dataset. WACV 2026. Full paper. WACV Poster. Access QC-SF Dataset.
- R. Mahmoudi Kouhi, O. Stocker, P. Giguère, S. Daniel: CLOUDSPAM: Contrastive learning on unlabeled data for segmentation and pre-training using aggregated point clouds and MoCo. Remote Sensing, 2024. MDPI publication page.
- R. Treuhaft, K.C. Cushman, S. Hensley, N. Pinto, O. Stocker, B. Hawkins, M. Lavalle, R. Chen: Estimation of Forest Aboveground Biomass from Derivatives of Vegetation-Structure Profiles. IGARSS, 2024. IEEE publication page.
- O. Stocker, R. Mahmoudi Kouhi, E. Guilbert, A. Ferraz, T. Badard: Investigating the Impact of Point Cloud Density on Semantic Segmentation Performance using Virtual Lidar in Boreal Forest. IGARSS, 2023. Full paper. See abstract and point clouds.
- O. Stocker and A. Le Bris: Can SPOT-6/7 CNN semantic segmentation improve Sentinel-2 based land cover products? Sensor assessment and fusion. ISPRS Annals Photogramm. Remote Sens. Spatial Inf. Sci., 2020. Full paper. ISPRS publication page. See inference results.
Talks & Communications
- E. Guilbert, O. Stocker: QC‑SF : un jeu de données synthétique pour la simulation lidar de la forêt boréale. La revue Géomatique, Ordre des arpenteurs-géomètres du Québec, 2026. See OAGQ Volume 53 (page 6).
- O. Stocker: QC-SF: Québec Simulated Forest. SilviLaser 2025. SilviLaser website.
- O. Stocker: QC-SF: Québec Simulated Forest. Colloque FFGG, 2024. See FFGG Colloque website.
- O. Stocker, R. Mahmoudi Kouhi: Can Simulation and Self-Supervised Learning Help LiDAR Point Clouds Semantic Segmentation in Boreal Forest. 4e concours de la recherche en intelligence et données, 2024. See Concours IID 2024 schedule.
- O. Stocker: La modélisation au service de la vision par ordinateur. Série d’ateliers sur les jumeaux numériques, CRDIG, March 2023. Watch replay on YouTube (in French), See program.
- O. Stocker, E. Guilbert, A. Ferraz, and J.F. Côté: Simulation d’acquisitions LiDAR aéroportées en milieu forestier pour l’entrainement de réseaux de Deep Learning. TriDiFor symposium, September 2022. See TriDiFor 2022 program.
- A. Le Bris and O. Stocker: Classification par réseaux de neurones convolutifs de données SPOT-6/7 et Sentinel-2 pour la segmentation sémantique de l'occupation du sol. TEMU Workshop, 2020. See TEMU 2020 program.
Community & Academic Service
- 2022, 2023, 2025: Lecturer, Linear Algebra & Spherical Trigonometry (B.Sc. in Geomatics), Department of Geomatics Sciences, Université Laval. Department website.
- 2024: Spearhead of the return of the Université Laval FFGG Faculty annual research conference and lead organizer of the 2024 edition. See Colloque FFGG website.
- 2023: Founding lead of ERABL-UL (Équipe de Recherche en Apprentissage 3D et Lidar). View GitHub organization.
- 2022: GNSS Acquisition Lead for the 2022 Saskatchewan field survey linked to the BERMS project, in collaboration with NASA-JPL researchers N. Pinto and R.N. Treuhaft.
- 2021: Teaching Assistant, Linear Algebra & Spherical Trigonometry (B.Sc. in Geomatics), Department of Geomatics Sciences, Université Laval. Department website.
Awards & Grants
- 3rd Place, "Relève" Challenge, NumériQC Conference, 2023 (500 CAD)
- Fonds Joncas Scholarship: Next Generation of Professors, 2023 (12,000 CAD)
- 1st Place, "My Thesis in 180 Seconds" Challenge, 10th GIS Day at Université Laval (announcement), 2022 (300 CAD)
- Produits Forestiers Résolu Scholarship: Sustainable Forest Management, 2022 (5,000 CAD)
Open-Source work
Code
You can find my open-source developments on my GitHub:
- PTv3-QCSF, MinkUnet-QCSF, and KPConv-QCSF: Adapted implementations of deep learning architectures used for QC-SF benchmarking presented in the WACV 2026 paper.
- OS_NET: Full processing pipeline used to infer the results presented in the ISPRS 2020 paper.
- OSToolBox: A utility toolbox developed alongside OS_NET containing general functions such as file grabbers and string formatters. Released on PyPI: OSToolBox.
- RSC: A lightweight LiDAR classification program developed in one month during my Master's at ENSG.
Data
The open-access QC-SF dataset is available at qc-sf.org.
Past Projects
Selected previous projects and academic training:
- 2019, Master's Internship, ENSG & LaSTIG IGN: Use of Sentinel-2 and SPOT 6/7 data for land cover classification. Master's Thesis, Defense Slides, Poster.
- 2019, Master's Project, ENSG: LiDAR semantic segmentation with random forest. Summary.
- 2017, International Internship, RIEGL: Portable visualization interface for LiDAR acquisition. Summary.
- 2017, Master's Internship, Polytech Lille & SNCF: LiDAR post-processing for automated generation of cross-profiles. Summary.
Misc
- I am a 5b climber and working hard to send my first 6a route! Just kidding, dislocated my shoulder again and had to switched to running and calisthenics.
- I fall often and will keep falling, but I am learning how to get back up faster each time.
- Special thanks to my best coworkers: Reza, Omid, William, Morgan, and Éric.
- I am significant!
Main image credit: Abass • Site editor: Link to creator • Keep in touch