I have to survey a 3 mile (5 KM) road using an UAV. I have gone through following links
and understood that there should be around 8-10 GCPs, but the distance of length of flight is not clear for 8-10 GCPs requirement. What should be the distribution of GCPs, whether it should be in zig zag ( kind of random) or it should be linear in pairs ?
The road is surrounded by the vegetation, and the UAV will be flying at the height of 100 m with 5.2-26 mm camera.