All our drones are equipped with digital camera, GPS and altitude sensor to fly pre planned flight lines and provide
overlapping aerial photography of the site.
Photo centre positions can then be accurately calculated using specialist software. The software is used to carry
out aerial triangulation and bundle adjustment of overlapping photos using GPS Camera positions, camera calibration
and ground control as reference. After this process has been carried out accurate 3D measurement can be obtained
digitally from the photo model.
This method can provide accuracies of up to +/- 20mm on hard detail features and an accuracy of up to +/- 50mm
on soft detail such as short grass. Accuracy of final deliverables is dependent on flying height, photo quality
and ground control configuration.