visual positioning

I see a lot of warnings about the visuall positioning going wonky when people fly close to the surface of water. I want to fly a mission following a bridge over the Sacramento River, not a wide river, and I am wondering how "close" is considered "safe." I will get amazing aerial video at...

Hi, I am currently looking to implement Aerial Drones to perform inventory reconciliation with my company WMS. The drone would have to perform an indoor fly route; or to be controlled by a computer or application performing a fly path and taking pictures in specific points. The case scenario...