Surveying ME - BMEEOAFM201

UAV: Unmanned Aerial Vehicle

drone

Taking overlapped digital pictures from the air along with a predesignated flight plan, automatic recognition of the same points on different images, generating a point cloud, transformation to the absolute coordinate system using reference points.

Two types of vehicles, their pros and cones:

1. fixed-wing
2. multirotor 

Typical resolution of digital camera: <20M, the typical height of flight: 40-200 m, typical resolution: a few cm/pixel, typical density of point cloud: a few dozens of points / m², typical flight time using one battery: a few 10 minutes.

Applications: surveying excavations, terrain, buildings, agriculture, flooded areas ...

Final results: (1) orthophoto and (2) point cloud

limitations: the capacity of the battery, safety, accuracy, vegetation...