Figure4
Figure 4. Example scenario for Query 1 evaluation. The yellow area represents the geographic area defined in the query. The blue (A) and purple (B) datasets are existing point clouds with respective densities of 30 and 10 point/m2, while the green (C) dataset is raw LIDAR sensor data that can be transformed into a point cloud with a density of 20 point/m2. Datasets A, B, and C are part of the data source associated with the federated database accessible by all agents.