So about the reality scan, then why dont thae be use on a drone, drones hover, so when want to scan 150 ft high trees, and can get into places, also install a second camera, so can watch on a tv monitor, making sure you facing the correct way, 36 shot around even more massive structures, like the 7 wonders of the world,
RealityScan is the mobile device alternative to RealityCapture. RealotyCapture is the program in which you can use drones to do exactly what you are talking about! 
Many drone controllers have the option to connect a phone as a monitor while you fly.
RealityCapture supports that, too!