Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

A Short Introduction to Automotive Lidar Technology

viksnewsletter.com

Post reply on HN
Print view View original

61–70 of 187 posts

Re: A Short Introduction to Automotive Lidar Technology

#61

Post by brcmthrowaway »

twelvechairs wrote: post #53
brcmthrowaway wrote: post #40

Is there a lidar unit I can take home and scan my house at high resolution (than iphone)?

You can, they are just expensive (other than iphone). Maybe 8k for a handheld basic one (e.g. Trion P1), $15k for a drone attachment (e.g. DJI Zenmuse L1) - more for the ones surveyors use proper including the tripod-mount ones. At the consumer end photogrammetry tends to just be so much cheaper that its preferred unless you really need defined accuracy at a high level of detail. Lidar tends to work currently much be…

iphone has actual lidar not photogrammetry right?

Re: A Short Introduction to Automotive Lidar Technology

#62

Post by Klaus23 »

asdasdsddd wrote: post #49
Klaus23 wrote: post #44

Earlier quoted context omitted.

This is simply not true. Let's look at the best autonomous driving features available today, i.e. level 3: Mercedes Drive Pilot: Uses a lidar (and a dummy unit) up front. BMW Personal Pilot: Uses a lidar (and a dummy unit) up front Honda SENSING Elite: Uses 5! lidars They all use lidar, and some of the placement locations are downright hideous (Mercedes EQS). I think further development will require even more/better…

What are the benchmarks that say Mercedes, BMW, and Honda have the best level 3 features.

I ignore the Chinese because it is difficult to get reliable English information. Apart from those, these are the only level 3 systems available, and level 3 is the most advanced system that private individuals can currently get their hands on. Have I missed any?

Re: A Short Introduction to Automotive Lidar Technology

#63

Post by ra7 »

jaimex2 wrote: post #30
kieranmaine wrote: post #23

Earlier quoted context omitted.

In a recent No Priors podcast with the Waymo Co-CEO Dmitri Dolgov, he talks about how they evaluated just driving with cameras and how it isn't good enough for full autonomy and doesn't meet their bar for safety [1]. 1: https://www.youtube.com/watch?v=d6RndtrwJKE&t=1119s

They went deep down the wrong path and need to justify their mistake. Waymo will be killed off any day now.

Google killing off Waymo by giving them $5.6B just a few weeks ago!

Re: A Short Introduction to Automotive Lidar Technology

#64

Post by ra7 »

xdmr wrote: post #54
knifie_spoonie wrote: post #36

Earlier quoted context omitted.

In practice humans aren't particularly safe drivers.

Is that because their vision fails to provide the information necessary to drive safely? Or is it due to distraction and/or poor judgment? I don't actually know the answer to this, but I assume distraction/judgment is a bigger factor. I'm not a fan of the camera-only approach and think Tesla is making a mistake backing it due to path-dependence, but when we're _only_ talking about this is _broadly theoretical_ terms,…

> Is that because their vision fails to provide the information necessary to drive safely?

In certain conditions, yes. Humans drive terribly in dark and low light, something lidar excels in.

Re: A Short Introduction to Automotive Lidar Technology

#65

Post by itishappy »

hammock wrote: post #38
itishappy wrote: post #26

Earlier quoted context omitted.

They should not be. In theory they can be, but there are strict regulations to prevent that.

What are the regulations and who are the relevant regulatory bodies? I could not find with a google search

Good question! You're right, this is surprisingly hard to Google. It looks like the FDA is responsible. I would not have guessed that!

The National Highway Traffic Safety Administration (NHTSA) would have been my guess, but I'm not finding much there. They have a spec for LIDAR speed measurement devices, and one for the required sensors in vehicles, but nothing on the the output of said sensors.

> For manufacturers of laser products, the standard of principal importance is the regulation of the Center for Devices and Radiological Health (CDRH), Food and Drug Administration (FDA) which regulates product performance. All laser products sold in the USA since August 1976 must be certified by the manufacturer as meeting certain product performance (safety) standards, and each laser must bear a label indicating compliance with the standard and denoting the laser hazard classification.

https://www.lia.org/resources/laser-safety-information/laser...

https://www.fda.gov/radiation-emitting-products/home-busines...

https://www.fda.gov/about-fda/fda-organization/center-device...

Re: A Short Introduction to Automotive Lidar Technology

#67

Post by itishappy »

0_____0 wrote: post #51
itishappy wrote: post #27

Earlier quoted context omitted.

I'd be curious if the design of the Cybertruck affects readings at all. It's got angles straight outta an F-117.

I reckon it's probably not that bad, there are big surfaces that are almost normal to what would be incoming radio energy. Stealth shapes tend to reflect energy in a completely different direction from the source.

Here's the closest thing to data I've been able to find. I have no idea what to do with this info.

https://x.com/jwt0625/status/1848218860513628203

Re: A Short Introduction to Automotive Lidar Technology

#68

Post by ra7 »

Klaus23 wrote: post #44
quonn wrote: post #4

Earlier quoted context omitted.

It‘s not just Musk. Most automobile manufacturers have maintained that they need to find a way to do it with cheap and pretty sensors.

This is simply not true. Let's look at the best autonomous driving features available today, i.e. level 3: Mercedes Drive Pilot: Uses a lidar (and a dummy unit) up front. BMW Personal Pilot: Uses a lidar (and a dummy unit) up front Honda SENSING Elite: Uses 5! lidars They all use lidar, and some of the placement locations are downright hideous (Mercedes EQS). I think further development will require even more/better…

Chinese OEMs (BYD, Xaomi, Nio) use lidar in almost all of their mid to premium segments. Also, Polestar 3.

Re: A Short Introduction to Automotive Lidar Technology

#69

Post by qiqitori »

brcmthrowaway wrote: post #40

Is there a lidar unit I can take home and scan my house at high resolution (than iphone)?

I think this depends on your budget and what exactly you want to do. Do you want to scan your house from outside? Sounds expensive, would probably have to be drone-mounted, and the drone would fly around for a while (depending on the shape of the house.) Inside, and don't mind some minor inaccuracies? Not Lidar, but a Kinect from yesteryear may be enough.

Re: A Short Introduction to Automotive Lidar Technology

#70

Post by arrakark »

atomic128 wrote: post #14

Here's an interesting "lidar gem" from Hacker News a few years ago: https://news.ycombinator.com/item?id=33554679 Lidar obstacle detection algorithm from a Git repo leaked onto Tor This is a drivable region mapping (obstacle detection) algorithm found in what appears to be a git repo leaked from an autonomous vehicle company in 2017. The repo was available through one or more Tor hidden services for several years. Th…

Which Tor hidden service was this?

Asking for a friend...

Post reply on HN