> Well, what do they recommend there? It's hard to make people look towards the camera in a real world, uncontrolled surveillance application?
Two approaches that would be cheap and effective:
- Put a monitor with animated content right next to the camera, that the person is likely to look at. For instance, an animated menu (for a restaurant), a welcome message (for corporate reception), a live playback of the surveillance camera (in a retail environment to deter theft), a quote-of-the-day for a church, live sports (in a bar) etc.
- Put the camera next to an intercom, a door bell, or other device that a person will naturally face when interacting with it.
> Also, any sense of how well or poorly it scales up?
I haven't tested it yet but the system appears well designed to scale to millions of subjects. Their technical documentation is extensive and gives lots of details on how to achieve it. From a performance standpoint their software services architecture is quite similar to ours (that scaled to 100 servers for one big project). As for the accuracy, the NIST report is best suited to answer your question.
> Btw that I mean, it's easier to get good results with a small watchlist and a small number of people being surveilled but put it in a large scale application with tens of thousands of different people passing daily and hundreds of people on a watchlist and it's a lot harder.
Yes, that's what the US NIST was tasked with testing, e.g. for airports, border protection, etc. false alarm rates could easily get out of control and make a multi-million dollars systems useless. I've seen it in person 4 years ago at Dubai airport where a rack full of face recognition servers was permanently turned off. (I won't mention that vendor.)
Personally I'm only aware of NEC and Safran/Morpho having a solid track record in these kinds of large government contracts. Of course this is a somewhat controlled environment. A few months ago there was news that a police in UK was able to arrest a criminal through street surveillance. That was NEC, and that's why I became interested in trying it out myself.