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> I had skimmed and saw the fake traffic sign and fake car examples both of which shouldn't fool LIDAR systems There's no RADAR/LIDAR system that would reasona

> I had skimmed and saw the fake traffic sign and fake car examples both of which shouldn't fool LIDAR systems There's no RADAR/LIDAR system that would reasonably tell apart real from fake signs or lines (the lines being the real dangerous issue). They come in many shapes and sizes. A fake sign would also fool a human but overall a human driver has many other cues to base a decision on. At the very least someone trying to trick you would have to invest far more into the props used.

rtkwe 7y ago
The fake signs in this example were projected/displayed in/on trees/billboards and would be ignored fairly easy because it would be the image embedded in a a shape that didn't match the shape of a sign. These types of signs shouldn't fool people, you could fool both human [0] and CV with a fake sign on a pole but it shouldn't fool either just projected onto a tree. With LIDAR you can tell if the image of the speed limit is on a speed limit sign or not. [0] Though people would have an additional layer of reasoning about if the speed limit was reasonable for a particular set of road. Just putting up a 90 MPH speed limit on a random residential road even with a convincing sign should get people to do 90 on it. (Granted computers already have databases of posted speed limits they could draw from too)
- el_nino 7y ago
  > the image embedded in a a shape that didn't match the shape of a sign. Traffic signs (the support they are on at least) come in all shapes and sizes. Especially temporary ones. It may be that in the future the car will be smart enough to match an image with the proper support but we're a long way out. And electronic signs are basically a big panel anyway. [0] We won't see a FSD car intentionally ignoring a sign too soon. The risk is too great so manufacturers will leave it there at the risk of the car getting tricked. I see the lane markings as the biggest real issue. Cars are nowhere near the point where they can "judge" a situation like a real driver would. [0] https://www.dw.com/image/47225414_303.jpg https://www.dw.com/image/47225414_303.jpg

rtkwe 7y ago

The fake signs in this example were projected/displayed in/on trees/billboards and would be ignored fairly easy because it would be the image embedded in a a shape that didn't match the shape of a sign. These types of signs shouldn't fool people, you could fool both human [0] and CV with a fake sign on a pole but it shouldn't fool either just projected onto a tree. With LIDAR you can tell if the image of the speed limit is on a speed limit sign or not. [0] Though people would have an additional layer of reasoning about if the speed limit was reasonable for a particular set of road. Just putting up a 90 MPH speed limit on a random residential road even with a convincing sign should get people to do 90 on it. (Granted computers already have databases of posted speed limits they could draw from too)

el_nino 7y ago
> the image embedded in a a shape that didn't match the shape of a sign. Traffic signs (the support they are on at least) come in all shapes and sizes. Especially temporary ones. It may be that in the future the car will be smart enough to match an image with the proper support but we're a long way out. And electronic signs are basically a big panel anyway. [0] We won't see a FSD car intentionally ignoring a sign too soon. The risk is too great so manufacturers will leave it there at the risk of the car getting tricked. I see the lane markings as the biggest real issue. Cars are nowhere near the point where they can "judge" a situation like a real driver would. [0] https://www.dw.com/image/47225414_303.jpg https://www.dw.com/image/47225414_303.jpg