Work Picture

For work the drone takes an array of vertical, 80% overlapping images. A combination of this and RTK GPS technology allows creation of an asonishingly sharp ortho rectified photo map and 3D model. It is still wise to check the model with a scattering of conventionally recorded pole measurements. Further software refinement of the model allows you to remove "noise", diggers, trucks, cabins and leave just the ground surface. How does it do that?, I haven't a clue.
At the end of the survey mission I pointed the camera up the way and took a picture looking up the loch.