Not at a distance. They're basically transparent even to our naked eyes at aircraft speed and distance scales. Let alone to digital cameras on flying robots. They'll probably have to either use really good active sensors(ITAR), or infer possible areas of danger from visually cable-end-like features.
Yes human also cannot see them from far away and flying at high speed but what I wanted to point out is that robots usually get the cheapest and lowest quality sensors.
