We have a fleet of 13 drones, both multirotor and fixed-wing, equipped with multiple sensors, such as infrared, near infrared and high-resolution photography.
We can easily detect surfaces of several hectares and return a high-precision three-dimensional model, with an average error of 3-4 cm.
From this model we generate floor plans, DEM -digital elevation model- files, isolines, volumetric calculations, etc