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Even if facial recognition worked perfectly, the culprit still needs to exist in the library/database to be caught. And no system claims to be perfect- you n

by parsimo2010 6y ago

Even if facial recognition worked perfectly, the culprit still needs to exist in the library/database to be caught. And no system claims to be perfect- you need good reference images of everyone with multiple angles and a good view of their face at the crime scene. Driver’s license photos just aren’t good enough and the culprit may not have allowed themself to be in other images. Out of all the people that were at the Capitol that day, there are bound to be a few people that don’t have many pictures associated with their true identity. It’s maybe even more likely that a person who would bring pipe bombs to a mass gathering would be one of those people cautious/paranoid enough to stay out of the system.

admax88q 6y ago
Drivers license photos exist for the purposes of identification. If theyre not good enough for facial recognotion software then that software is a joke.
- deleted 6y ago
  [deleted]
- RhodesianHunter 6y ago
  Have you seen drivers license photos? Mine has never looked like me.
- parsimo2010 6y ago
  They work adequately for checking to see if a person claiming to be John Q. has roughly the right facial features and skin tone- because you are just making a single comparison. It doesn’t work well in the other direction- finding which DL photo might belong to an unknown John Doe. Given the age of many DL photos (mine is from 8 years ago) and the fact that they are from a single aspect angle, they are not suited for the reverse task of finding which DL image is a good enough match for a person’s face from surveillance footage. If you tried to search every state database for a white guy with brown hair, and account for the fact that he may have a different beard or hair style from the DL photo that may be years old, you’re not going to narrow the pool enough to help the FBI. If you made your match threshold low enough to be reasonably reasonably confident that you didn’t miss the guy, you’d end up with millions of matches. The only decent facial recognition techniques use more reference images and use other methods to narrow the search space. The reason that Facebook was able to get their automated photo tagging working years ago was because they had exquisite knowledge of your social graph and only matched people 1-2 connections away from you. But a nationwide search for an unknown criminal doesn’t have the ability to drastically narrow the search space like this.
randycupertino 6y ago
That makes sense. Too bad it doesn't work that well yet- could also be used in cases such as this: https://sanfrancisco.cbslocal.com/2021/01/21/highland-hospital-oakland-unidentified-patient-icu/ https://sanfrancisco.cbslocal.com/2021/01/21/highland-hospit...
- bobthepanda 6y ago
  At the same time we already have instances where false positives led to the jailing of the wrong person. https://www.nytimes.com/2020/12/29/technology/facial-recognition-misidentify-jail.html https://www.nytimes.com/2020/12/29/technology/facial-recogni...

admax88q 6y ago

Drivers license photos exist for the purposes of identification. If theyre not good enough for facial recognotion software then that software is a joke.

deleted 6y ago
[deleted]
RhodesianHunter 6y ago
Have you seen drivers license photos? Mine has never looked like me.
parsimo2010 6y ago
They work adequately for checking to see if a person claiming to be John Q. has roughly the right facial features and skin tone- because you are just making a single comparison. It doesn’t work well in the other direction- finding which DL photo might belong to an unknown John Doe. Given the age of many DL photos (mine is from 8 years ago) and the fact that they are from a single aspect angle, they are not suited for the reverse task of finding which DL image is a good enough match for a person’s face from surveillance footage. If you tried to search every state database for a white guy with brown hair, and account for the fact that he may have a different beard or hair style from the DL photo that may be years old, you’re not going to narrow the pool enough to help the FBI. If you made your match threshold low enough to be reasonably reasonably confident that you didn’t miss the guy, you’d end up with millions of matches. The only decent facial recognition techniques use more reference images and use other methods to narrow the search space. The reason that Facebook was able to get their automated photo tagging working years ago was because they had exquisite knowledge of your social graph and only matched people 1-2 connections away from you. But a nationwide search for an unknown criminal doesn’t have the ability to drastically narrow the search space like this.

randycupertino 6y ago

That makes sense. Too bad it doesn't work that well yet- could also be used in cases such as this: https://sanfrancisco.cbslocal.com/2021/01/21/highland-hospital-oakland-unidentified-patient-icu/ https://sanfrancisco.cbslocal.com/2021/01/21/highland-hospit...

bobthepanda 6y ago
At the same time we already have instances where false positives led to the jailing of the wrong person. https://www.nytimes.com/2020/12/29/technology/facial-recognition-misidentify-jail.html https://www.nytimes.com/2020/12/29/technology/facial-recogni...