I don't see that as peeping. But if someone has a tall privacy fence I don't think it is neighborly to point a camera over their wall. If something is in the open it is free game.The reason I asked is my neighbor across the street is always in his garage or out front all day everyday doing nothing and that's his business. I'm always going places and wanted to secure my property, we also have auto break-ins in my area. Anyway I talked to him and he didn't seem too keen on the idea, so I put the camera in the backyard.
I didn't tell him that there is no expectation of privacy in a public place.