Here in California You cannot film someone on their property without permission. People in public are fine. If you are just filming a flyby then you are good. NOW if you film someone and make that person or thier property the "Main Subject" of...
Since most of us have to fly within the line of sight, it's not terribly difficult to identify the person flying the drone.
Most people don't care, very few people even have an RID app installed. If some person with an agenda is going to track...
Detecting cables is difficult. You have a thin, straight object with low contrast. On a bright day, with a light colored object behind it, it can be easy to detect the cable. On an overcast day, the level of contrast between the cable and what...