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This seems to prevent people from being detected by a generic object detector, but it doesn’t seem obvious that it will actually confuse a face detector… it mig

by gdny 4y ago

This seems to prevent people from being detected by a generic object detector, but it doesn’t seem obvious that it will actually confuse a face detector… it might however confuse an autonomous vehicle, wouldn’t wear this in the street

simonh 4y ago
I’m not sure where you get that from. These are specifically designed to confuse face detection software. Edit: Maybe I see the cause of confusion. The videos show “person” detection, but the way these systems distinguish people from other objects is by faces. As far as I know cars don’t do that, they just detect objects and don’t care about faces, so it shouldn’t be an issue.
- gdny 4y ago
  At the bottom of the « collections » page in the technology paragraph, they mention confusing the Yolo object detector into thinking you’re a giraffe with medium confidence instead of a person
  - JoBrad 4y ago
    But wouldn’t a car avoid a giraffe, too?
    - gdny 4y ago
      A perfect one, sure, but in practice the car might, at best, treat it with less priority than a human in case of a difficult decision to make, and at worst, treat a « 40% confidence giraffe » as a false positive and ignore it
      - codetrotter 4y ago
        Imagine the headlines. “Man run over by car in Lower Manhattan – autonomous vehicle mistook man for a giraffe”
        deleted 4y ago
        [deleted]
      - simonh 4y ago
        If a self driving car purposely ignores Giraffes or even real objects incorrectly identified as Giraffes or anything else, I think that's a problem. Africa is a place people drive cars in. And then there's this: https://www.coolest-homemade-costumes.com/cute-sew-giraffe-costume/ https://www.coolest-homemade-costumes.com/cute-sew-giraffe-c...
  - simonh 4y ago
    Yolo includes face detection, that's how it detects people. So it looks like yes this tech can be used for confounding more general image classifiers, but it was originally developed specifically for face detectors and the videos show it defeating those. Specifically on cars, I don't think any of the currently deployed systems do face detection. Apart from anything else it takes too long, almost half a second on the fastest systems. They sense people as generalised blobs. It would be quite dangerous, to a system like that many advertising billboards would appear to be people sticking their faces right up against the camera.
oefrha 4y ago
Yes, the only mention of software is Yolo (wrong capitalization and no mention of version), and I can’t find a link to a study or anything like that. Not convinced it can meaningfully confuse a classifier specifically trained to recognize faces, not giraffes or zebras. Sounds more like marketing BS.

by gdny 4y ago

simonh 4y ago

I’m not sure where you get that from. These are specifically designed to confuse face detection software. Edit: Maybe I see the cause of confusion. The videos show “person” detection, but the way these systems distinguish people from other objects is by faces. As far as I know cars don’t do that, they just detect objects and don’t care about faces, so it shouldn’t be an issue.

gdny 4y ago
At the bottom of the « collections » page in the technology paragraph, they mention confusing the Yolo object detector into thinking you’re a giraffe with medium confidence instead of a person
- JoBrad 4y ago
  But wouldn’t a car avoid a giraffe, too?
  - gdny 4y ago
    A perfect one, sure, but in practice the car might, at best, treat it with less priority than a human in case of a difficult decision to make, and at worst, treat a « 40% confidence giraffe » as a false positive and ignore it
    - codetrotter 4y ago
      Imagine the headlines. “Man run over by car in Lower Manhattan – autonomous vehicle mistook man for a giraffe”
      - deleted 4y ago
        [deleted]
    - simonh 4y ago
      If a self driving car purposely ignores Giraffes or even real objects incorrectly identified as Giraffes or anything else, I think that's a problem. Africa is a place people drive cars in. And then there's this: https://www.coolest-homemade-costumes.com/cute-sew-giraffe-costume/ https://www.coolest-homemade-costumes.com/cute-sew-giraffe-c...
- simonh 4y ago
  Yolo includes face detection, that's how it detects people. So it looks like yes this tech can be used for confounding more general image classifiers, but it was originally developed specifically for face detectors and the videos show it defeating those. Specifically on cars, I don't think any of the currently deployed systems do face detection. Apart from anything else it takes too long, almost half a second on the fastest systems. They sense people as generalised blobs. It would be quite dangerous, to a system like that many advertising billboards would appear to be people sticking their faces right up against the camera.

oefrha 4y ago

Yes, the only mention of software is Yolo (wrong capitalization and no mention of version), and I can’t find a link to a study or anything like that. Not convinced it can meaningfully confuse a classifier specifically trained to recognize faces, not giraffes or zebras. Sounds more like marketing BS.