Figure5

Figure 5. Evolution of the geometry condition during evaluation of the example query presented in Figure 4. (a) depicts the intersection of the query geometry with region A; (b) shows geometry condition after retrieving data from region A; (c) demonstrates the intersection of remaining geometry condition with region C, since that data can be used for generating a point cloud; (d) indicates the remaining region that will be used to execute an exploration mission to acquire data that is not present in existing databases.