4 ms·
That sounds really ambitious. By way of context, the casinos where I live offer a service: You can ask them to add your face into their database and they'll tr
by Arnt 4y ago
That sounds really ambitious.
By way of context, the casinos where I live offer a service: You can ask them to add your face into their database and they'll try to prevent you from entering. They have good photos of hundreds of people in the database and surveillance cameras at the entrances, and at that scale they're said to be good at matching the faces of people entering against the database.
That matches surveillance-camera footage against hundreds of photos. The Iranians want to do it against tens of millions, and stricter requirements. When the casino computer claims a match, an employee politely asks the person for papers a few seconds after entering, so a largish number of false positives is acceptable.
The Iranians won't be able to do that, they won't have employees on the spot. They'll either have to tune the recognition much more strictly or have vast numbers of false negatives.
Maybe this is just the Iranian mullahs trying to scare the hoi polloi. Or maybe it's yet another security company knowingly selling a government an expensive solution that doesn't work.
- kevincox 4y agoThe problem is actually somewhat different. In the casino case you need to compare every person to a relatively small set of "targets". In this case you need to identify people who are breaking the law, then you can save that clip and you need to identify it against all know people. The casino case doesn't know if a person is "interesting" until they perform the match. In this case they know that someone is "interesting" right away. Then they can take more time and effort to perform the match, including falling back to humans. It probably still isn't easy. You will still have "unknown offenders" that are not matched, but that probably isn't a big deal as they are effectively a false-negative which probably isn't a major issue in this context.
- chimineycricket 4y ago>stricter requirements Right, not just facial recognition, but hijab detection as well.
- Arnt 4y agoThat's not hard; you can do it with reasonable accuracy and then punt to human employees if there's any doubt. Matching many photos against many photos is the quadratic assignment from hell. If you use traits to sort people into 50 buckets, and you have 300 people in the database, you'll need to match each photo from the surveillance camera against six people in the database. If your database is the passport photos of the thirty million adult Iranian women, you'll need to match that surveillance photo against 600,000 passport photos of similar-looking women, photographed up to five years ago. Awful.
- dvngnt_ 4y agosomeone was recently arrested in America due to facial recognition for committing a crime in a city he had never been to. being black didn't help him
- seanw444 4y agoA law firm employee that brought litigation against Madison Square Garden was booted from MSG when they were identified by facial recognition as well. It's becoming the norm.
- notlukesky 4y agoHere is another example of a wrongly jailed black man: https://www.nbcnews.com/news/amp/ncna1252489 https://www.nbcnews.com/news/amp/ncna1252489