Plain view doctrine is a bullshit excuse in this discussion. Yes, you can expect to be in plain view of people including the police. You can expect that a camera can see you and record you. That part indeed is not a search.

A database of your movements and the associated photos or videos of those movements is not plain view. That's assembling a dossier. That is related to things like harassment laws and stalking laws.

Being able to access that database with a query is literally - literally, in the literal sense - a search. It's a search of information compiled about you going about your Constitutionally protected rights to travel, assemble, earn a living, and whatever else is not specifically illegal. It's a Fourth Amendment issue the very same way cell phone geofencing is a Fourth Amendment issue, and the US Supreme Court recently ruled on dragnets of cellphone data. It requires a judicial warrant.

Being in plain view in public does not give a police officer probable cause to follow you wherever you go, take down photos, videos, and notes about your route, and publish that to an interagency database as if you're a known suspect just so they can find you later in case you become a suspect. Doing the same thing with a little AI box on the side of the road is the same thing, not something entirely different.