Advanced Drone Flying Tips: Avoiding Obstacles by Observing Flat Surfaces A practical technique to help reduce the risk of crashes: by observing planar elements in the drone’s live camera view, such as regular rooftops and flat walls, pilots can use visual cues to help assess whether the flight path is safe. Read this DJI Support tutorial to see how the principle of “flat-surface obstacle awareness” can be used in real-world scenarios. #dji #djidrones