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What about street signs, road markings, and even signals? That must be visual, and they certainly look different at night Can you create a "normalized" image (

What about street signs, road markings, and even signals? That must be visual, and they certainly look different at night Can you create a "normalized" image (hardware- or software-wise) that is independent of the time of day? Is that what you mean by "night-vision" and "modifier"? I would still imagine that certain light conditions (i.e. just around sunset) could make things difficult. Would be interesting if anyone knows how they handle this.

dkonofalski 10y ago
They do have cameras for those kinds of things but most of them are a backup system and they have the actual signals, signs, and speed limits embedded in the GPS data. If you do a google search, you can find several instances of Tesla's speed-limiting a car going down the freeway where the GPS data was incorrect. The car all but ignored what the signs actually said as long as it could identify that a sign was there. I'm sure there are light conditions that it can't handle, but there are so many fallback systems that it doesn't have to rely simply on visual data.
- joakleaf 10y ago
  Ah, ok, so if the can encounters a pre-mapped street signs, the car doesn't bother to actually check the sign. Hmm... seems a tad dangerous to me. What if the sign is changed, or two signs are almost in identical position? I suppose it will be ok if the pre-mapped version is used, whenever a confident visual prediction cannot be made (e.g. due to light, mud, bullet holes, or whatever).
  - dkonofalski 10y ago
    This is part of the issue that's being addressed in the current autopilot. Tesla throttles the autopilot speed to be no more than a certain amount past the posted speed limit. Drivers have been complaining that the posted limits don't match the pre-mapped limits already.
    - joakleaf 10y ago
      .... still seems a bit dangerous. Would also be interesting to hear what the other teams do, but I only remember seeing videos in daylight so far. Somehow I completely overlooked this issue in the past.

dkonofalski 10y ago

They do have cameras for those kinds of things but most of them are a backup system and they have the actual signals, signs, and speed limits embedded in the GPS data. If you do a google search, you can find several instances of Tesla's speed-limiting a car going down the freeway where the GPS data was incorrect. The car all but ignored what the signs actually said as long as it could identify that a sign was there. I'm sure there are light conditions that it can't handle, but there are so many fallback systems that it doesn't have to rely simply on visual data.

joakleaf 10y ago
Ah, ok, so if the can encounters a pre-mapped street signs, the car doesn't bother to actually check the sign. Hmm... seems a tad dangerous to me. What if the sign is changed, or two signs are almost in identical position? I suppose it will be ok if the pre-mapped version is used, whenever a confident visual prediction cannot be made (e.g. due to light, mud, bullet holes, or whatever).
- dkonofalski 10y ago
  This is part of the issue that's being addressed in the current autopilot. Tesla throttles the autopilot speed to be no more than a certain amount past the posted speed limit. Drivers have been complaining that the posted limits don't match the pre-mapped limits already.
  - joakleaf 10y ago
    .... still seems a bit dangerous. Would also be interesting to hear what the other teams do, but I only remember seeing videos in daylight so far. Somehow I completely overlooked this issue in the past.