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Author

Valentine Bellet

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Open access Sep 2026

Enhancing Photogrammetric Digital Surface Models with Pretrained Diffusion Models and Multimodal Conditioning

Large-scale Digital Surface Models (DSMs) can be produced cost-effectively from satellite images via stereo-photogrammetry. However, the resulting 3D maps are often contaminated by noise, outliers, and voids. On the other hand, aerial LiDAR provides high-accuracy elevation measurements at a substantially higher cost. I...

Antoine Lorentz, Stéphane May, Valentine Bellet et al. · 0 citations
Open access Aug 2026

Building a unified elevation data analysis tool in the frame of the CO3D mission

Abstract. The CO3D mission, launched in July 2025, aims to reconstruct the Earth’s continental surfaces in 3D. Assessing the quality of the resulting digital surface model requires an inter elevation data comparison tool, leading CNES to collaborate with the GlacioHack collective and join the governance of their open-s...

Valentine Bellet, R. Hugonnet, Amaury Dehecq et al. · 0 citations

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