Andrej Karpathy (Tesla): CVPR 2021 Workshop on Autonomous Vehicles [video] • Hacker News Board

Re: Andrej Karpathy (Tesla): CVPR 2021 Workshop on Autonomous Vehicles [video]

#211

Post by ra7 » Wed, Jun 23, 2021, 10:20 PM UTC

jiofih wrote: post #210

ra7 wrote: post #208

Earlier quoted context omitted.

I said “The rest of the SDC industry uses 4D radars” in a follow up comment, which clarifies I don’t mean car manufacturers. Given this post is about radar usage in self driving and how Tesla/Karpathy touts their capabilities, I compare them to other SDC players, not other car manufacturers who are not in the game. And their SDC competitors are running away because they have the newer 4D radars.

Well, until these are actually adopted by a car company and out on the road, any claims about performance are meaningless. Your original comment implied Tesla chose to use inferior tech compare to the market which is not true in the slightest.

> Your original comment implied Tesla chose to use inferior tech compare to the market which is not true in the slightest.

Only if you don’t consider Waymo, Cruise, Mobileye and others as Tesla competitors.

Re: Andrej Karpathy (Tesla): CVPR 2021 Workshop on Autonomous Vehicles [video]

#212

Post by CrazyStat » Thu, Jun 24, 2021, 1:14 AM UTC

semi-extrinsic wrote: post #203

CrazyStat wrote: post #88

Earlier quoted context omitted.

> The human vision system operates at a bitrate equivalent of well beyond 500 gigabits per second Do you have a source for this claim? Academic sources suggest numbers 4-5 orders of magnitude smaller: 6Mbps [1], 10Mbps [2]. [1] The Oxford Companion to the Mind (1987) [2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1564115/

Alright, I should clarify, as my first post was a bit sloppy. We know the eye has highly nonuniform resolution, with the high resolution region moving around all the time to cover areas of interest. I agree this system has something like 10 Mbps actual bitrate. But we don't know how to make such a system for computer vision. Our CV systems all have uniform resolution. And thus a CV system needs to match the peak reso…

Thanks for the clarification. I still don't fully buy the argument.

An AI driver doesn't necessarily need to match or exceed a human driver's sensors in order to drive as well or better. The human eye does indeed have very impressive resolution and tracking, but the ability to attend to a certain area of interest also means that you miss things in other areas.

Instead of using the human as the reference point, we can turn the question around and ask instead: given a video feed from a current generation Tesla, would a human be able to drive safely? I would suggest yes, though it would take some adjustment from existing driving habits. If a human could do it with Tesla's current sensors then an AI almost certainly can eventually do better with the same sensors.

I actually think the bigger issue with Tesla's approach (and I say this as a generally happy Tesla owner... though the timing is terrible since it had to be towed to the service center today) is their insistence on minimal maps/local data for driving. I understand why they want to do that for scaling purposes, but there are lots of intersections that are confusing for your average human the first time they come to it. I expect figuring out the traffic pattern in a confusing intersection is the harder AI problem.

Re: Andrej Karpathy (Tesla): CVPR 2021 Workshop on Autonomous Vehicles [video]

#213

Post by sajacy » Thu, Jun 24, 2021, 3:12 AM UTC

ra7 wrote: post #211

jiofih wrote: post #210

Earlier quoted context omitted.

Well, until these are actually adopted by a car company and out on the road, any claims about performance are meaningless. Your original comment implied Tesla chose to use inferior tech compare to the market which is not true in the slightest.

> Your original comment implied Tesla chose to use inferior tech compare to the market which is not true in the slightest. Only if you don’t consider Waymo, Cruise, Mobileye and others as Tesla competitors.

Technical yet casual readers on HN will compare Tesla to other car manufacturers before CV programs in self-driving startups.

+1 to the other commenter (grandparent comment).

Re: Andrej Karpathy (Tesla): CVPR 2021 Workshop on Autonomous Vehicles [video]

#214

Post by opsya4 » Wed, Jun 30, 2021, 1:39 PM UTC

sajacy wrote: post #213

ra7 wrote: post #211

Earlier quoted context omitted.

> Your original comment implied Tesla chose to use inferior tech compare to the market which is not true in the slightest. Only if you don’t consider Waymo, Cruise, Mobileye and others as Tesla competitors.

Technical yet casual readers on HN will compare Tesla to other car manufacturers before CV programs in self-driving startups. +1 to the other commenter (grandparent comment).

As a radar engineer, I am not happy about repeating hearsay discussions.

Radar has a range resolution and an angular resolution. Andrej completely omitted this fundamental aspect in his talk.

In my humble opinion, Andrej needs a real Radar engineer in his group before making such a statement in his talk.

Nobody can be smart for all topics, which makes all humble also.