171–180 of 214 posts
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What radar did Tesla use? What does the rest of the industry use?
They are using Continental 2D radars from 2014. The rest of the SDC industry uses what is called 4D high resolution imaging radars. That's why Teslas have poor performance like phantom braking under bridges.
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If you have one piece of rotten meat in a perfect stew, you still have a disgusting dish. Good sensor fused with garbage in is still garbage in. That was one of the major points of the talk - the vision-only system is more accurate than the one with other modalities thrown in, even though the latter has more data. We intuit that the fusion network should just learn to ignore the bad sensor when it's unreliable, but t…
> That was one of the major points of the talk - the vision-only system is more accurate than the one with other modalities thrown in, even though the latter has more data. We intuit that the fusion network should just learn to ignore the bad sensor when it's unreliable, but this rarely happens in practice. This makes some important assumptions, namely that Tesla built a lidar and radar perception pipelines and senso…
Tesla's decision not to use the LIDAR as a safety feature (i.e. having reliable high-resolution data about things the car can collide with) is so incredibly indefensible, since solving the last 1% of this using only vision likely requires a general artificial intelligence Prediction: Tesla will be the last of all major auto manufacturers to get to L5 autonomy. Time interval between when Tesla L5 FSD is finally availa…
I strongly disagree. By all measures I've seen (including a couple of slides in the OP's video), Tesla's self-driving is far safer than human driving: the number of accidents and deaths per mile driven are something like an order of magnitude lower (i.e., around 10x safer). I mean, the machine never gets distracted, tired, sleepy, emotional, drunk, etc., so it is a LOT LESS likely to crash on boring, monotonous road…
I have to give it to Elon that he was able to keep his fans believing a big lie of their FSD system to achieve Level 4 / 5 autonomy last year, when this year it was admittedly Level 2 [2].
The fans will continue to believe his lies and keep on saying "It's coming soon, you'll see..." when they have just been sold a Fools Self Driving System™.
[0] https://twitter.com/Model3Owners/status/1406002366923612163
[1] https://twitter.com/comma_ai/status/1406304017400012800
[2] https://www.news18.com/news/auto/teslas-full-self-driving-cl...
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You get sparse point cloud from LIDAR sensors, not accurate 3D maps. This is the main reason why some people think LIDAR may not work well (mostly, only comma.ai and Tesla folks). Vision can also get you 3D maps, either in active manner (IR floodlight or structured lighting) or not. I will reserve my judgement until see more from either side.
> You get sparse point cloud from LIDAR sensors Take a look at how dense the point cloud from Waymo's 5th gen LIDAR is: https://www.youtube.com/watch?v=COgEQuqTAug&t=11599s . They just talked about this a few days ago.
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One of the arguments made in this talk is which sensor to trust when there is a disagreement. I'd love to see the scenarios where this happens with three types of sensors and the logic they use to choose the "right" one.
You can't avoid this problem by only having a single sensor modality, because you still have to decide if you trust your sensor data or not. In effect, you actually made the problem harder because you have no other information from any other sensor modalities to help understand the world around you. In effect, they solved the disagreement problem by sticking their head in the sand and pretending their sensors are nev…
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I strongly disagree. By all measures I've seen (including a couple of slides in the OP's video), Tesla's self-driving is far safer than human driving: the number of accidents and deaths per mile driven are something like an order of magnitude lower (i.e., around 10x safer). I mean, the machine never gets distracted, tired, sleepy, emotional, drunk, etc., so it is a LOT LESS likely to crash on boring, monotonous road…
>Tesla's self-driving is far safer than human driving: the number of accidents and deaths per mile driven are something like an order of magnitude lower (i.e., around 10x safer). Lies, damn lies, and statistics. Tesla here, is, again, being funny with the numbers. They LOVE to cite autopilot ON death statistics as being "10x safer than normal driving". What they fail to note is that Autopilot can ONLY be on while dri…
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> You get sparse point cloud from LIDAR sensors Take a look at how dense the point cloud from Waymo's 5th gen LIDAR is: https://www.youtube.com/watch?v=COgEQuqTAug&t=11599s . They just talked about this a few days ago.
Any idea why this video went private?
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They are using Continental 2D radars from 2014. The rest of the SDC industry uses what is called 4D high resolution imaging radars. That's why Teslas have poor performance like phantom braking under bridges.
What models on the market use 4D imaging radars? All info I can find shows products releases in the past 1-2 years for future vehicles.
Waymo has its own custom developed 4D imaging radar and I imagine most of the other SDC players have their own versions.
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Ironically this is what Tesla criticized Mobileye for. I still think that this is far the best demonstration of autonomous driving to date https://youtu.be/A1qNdHPyHu4
The 11 minute mark is terrifying: 1) The car fails to accelerate to beat the truck as it merges (the safest option given the scenario, even with the yield sign) 2) The car almost collides with the trailer of the truck and it stops with its nose sticking out into the merge lane 3) The car sits there with its nose in the merge lane as other cars go by 4) When the car finally has an opportunity to merge after having don…
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You get sparse point cloud from LIDAR sensors, not accurate 3D maps. This is the main reason why some people think LIDAR may not work well (mostly, only comma.ai and Tesla folks). Vision can also get you 3D maps, either in active manner (IR floodlight or structured lighting) or not. I will reserve my judgement until see more from either side.
Point clouds from the next generation of LIDAR are looking less and less sparse. https://youtu.be/COgEQuqTAug?t=11601