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New Publication: Automated change detection in low-cost time-lapse photogrammetric point clouds

Exemplary fused 4D objects-by-change (4D-OBCs), the colouring is based on the M3C2 differences between start and end epoch. (b) Time series of the core points with the highest change amplitude per 4D-OBC, cut to the duration of the detected change

We are happy to share our latest Open Access publication in the #JISDM 2025 Special Issue of Applied Geomatics!

Title: Automated change detection in photogrammetric 4D point clouds – transferability and extension of 4D objects-by-change for monitoring riverbank dynamics using low-cost cameras
Authors: Maximilian Ulm, Melanie Elias, Anette Eltner, Eliisa Lotsari & Katharina Anders 

Our study automates geomorphological change detection and mapping using photogrammetric 4D point clouds from low-cost wildlife cameras installed at a subarctic riverbank. By enhancing time-series analysis through 4D object-by-change (4D-OBC) segmentation, we contribute to understanding erosion processes and climate change effects. 

🔗 Read the full paper here
📍 Meet us at JISDM 2025 in Karlsruhe, where Maximilian Ulm will present this work during the poster session.

Congratulations to all authors on this great achievement!

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