The main objective of thismeasurementwas to validate the goals set
earlier: to measure the cost-effectiveness of the UAV approach and the
size of its errors. Further goals were to understand the process better
of using a UAV in civil engineering and surveying applications and to
point out potential improvements in replacing ground-based personnel
(e.g., safety and efficiency) and supporting (semi-) automated machine
guidance (AMG) using survey-grade positioning and elevation data. In
brief, the conventional ground-based (see Fig. 6, left image) and the
UAV photogrammetric-based (see Fig. 6, right image) surveying approaches
were compared.
The UAV took 64 pictureswith