If you want to inspect something, you must physically relocate yourself to that location or perspective. It doesn’t matter if you’re in a boat, helicopter or harness, or whether you’re holding a camera or flashlight – if you need to understand an environment or site, you must physically go there.
This is the paradigm drones are shifting.
Objects in the physical world are three dimensional, and can’t be digitized from the ground or space. Drones provide a vehicle to deliver never before seen, absolute contextual representations of the physical condition of any environment, over time, from many perspectives and sensor types. We can only manage what we can measure, and for the first time that includes the physical, spatial world.