Live data from Hacker News

Tesla auto-pilot keeps confusing moon with traffic light then slowing down

reddit.com

11–20 of 93 posts

Re: Tesla auto-pilot keeps confusing moon with traffic light then slowing down

#11
post #9
post #2

Use lidar, goddamnit.

lidar isn’t able to read the state of traffic lights as far as I know, and I believe lidar based systems detect the location of traffic lights from maps

Lidar cannot identify the state of a traffic light but it can confirm and understand its physical position.

Re: Tesla auto-pilot keeps confusing moon with traffic light then slowing down

#12
post #9
post #2

Use lidar, goddamnit.

lidar isn’t able to read the state of traffic lights as far as I know, and I believe lidar based systems detect the location of traffic lights from maps

If you overlay the point cloud with the image you're interpreting, it should become apparent that the "yellow light" has no accompanying red or green lamps, no pole holding it, no shroud around it, and is at some distance exceeding the depth limits of your lidar.

Re: Tesla auto-pilot keeps confusing moon with traffic light then slowing down

#17
post #3

I only have two cameras and have never confused the moon with traffic lights.

You also are making posts on the internet describing your abilities, you seem to have a much more advanced intelligence that might be hard for a computer in a car to replicate.

Re: Tesla auto-pilot keeps confusing moon with traffic light then slowing down

#18
This is a problem with learning the appropriate context. In the case of a yellow traffic light, there should be a traffic light fixture and two other (unlit) lights. Without this context, it becomes apparent the yellow pixels in a circular shape (representation to the network) are not a traffic light at all.

Tesla’s vision/ml systems are amazing. I would love to learn more about how unit testing for this type of error is done. Without some intermediate semantic representation, I don't see how these large, multi-head, end-to-end systems can isolate and regression? System tests are maybe possible, but it's unclear how well a system test would generalize to related, but unseen cases.

Re: Tesla auto-pilot keeps confusing moon with traffic light then slowing down

#19
post #16

I can't understand why instead of using all the possible senses: vision, auditory, radar, lidar they want to only use vision as if there's some sense of "purity" in doing that.

Pure cost cutting at expense of safety certainly.

Re: Tesla auto-pilot keeps confusing moon with traffic light then slowing down

#20
post #3

I only have two cameras and have never confused the moon with traffic lights.

You also are making posts on the internet describing your abilities, you seem to have a much more advanced intelligence that might be hard for a computer in a car to replicate.

Which is why the computer needs a cheat code in the form of LIDAR to compete.
Post reply on HN