Tesla Live Stream – Autonomy Day [video]

Post by cromwellian » Tue, Apr 23, 2019, 5:14 AM UTC

salty_biscuits wrote: post #396

Fricken wrote: post #173

Earlier quoted context omitted.

Vision is probablistic. You can improve your probabilities with more data and deeper nets, but the probability is never 100%. Inferring depth using triangulation of extracted features using vision is also probabilistic. Lidar gives you very rudimentary depth and positional data, but it is precise, and reliable, and the false positives are low. Lidar is not seeing the world as a series of probabilistic phantasms that…

"Lidar is not seeing the world as a series of probabilistic phantasms that may or may not be a pedestrian, or a jersey barrier, or whatever" Lidar is inherently probabilistic too,like every sensor is. Just because the photomultiplier voltage rises and some peak detection hardware can correlate it with a transmit pulse, it does not mean that there is a "point" at that position in 3d space. It has different error chara…

Post by cjhopman » Tue, Apr 23, 2019, 5:28 AM UTC

outworlder wrote: post #239

selectodude wrote: post #112

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Which might explain why he's a crummy CEO. If your job is to strategize for the entire company and you're busy learning the minutiae that you spend a lot of money for other people to worry about, maybe you need to consider using your time a little better. If you want to build neural nets, keep your stock, fire yourself and go build neural nets.

> If your job is to strategize for the entire company and you're busy learning the minutiae that you spend a lot of money for other people to worry about, maybe you need to consider using your time a little better This is what everyone that is not Tesla or SpaceX are doing. And have been doing for a long time. If the CEO is not an engineer at heart, what are they? I seriously doubt Elon Musk has more engineering know…

Post by cjhopman » Tue, Apr 23, 2019, 5:36 AM UTC

oska wrote: post #298

ClassyJacket wrote: post #273

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I have seen recent Teslas in person in the showrooms, and there doesn't appear to be any wiper for the cameras. Especially with a firsthand owner account just a few comments up I think it's actually only logical at this point to assume they didn't put wipers on the cameras.

I would think that heating the glass (and surrounding casing) would be a more effective measure for keeping a camera clear of snow.

Post by salty_biscuits » Tue, Apr 23, 2019, 5:49 AM UTC

cromwellian wrote: post #439

salty_biscuits wrote: post #326

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Apart from the map data going stale as it gets out of date, you always have the problem of registration of the vehicles position within the map. GNSS data can have a really long tailed error distribution (particularly within urban canyons and in tunnels). So you always need some way of making a local map and placing it within the high detail global map. There is a pragmatic argument saying if you already have a detai…

That's not how maps are used, and the map can be used as purely negative signal if you want, as in "no go" areas instead of "yes, this is safe". As it stands, Tesla's vision only system has no other backup system to tell us what is off limits.

Post by ajross » Tue, Apr 23, 2019, 5:53 AM UTC

naikrovek wrote: post #414

ajross wrote: post #404

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> The human eye has FAR better dynamic range than any camera built to date, at any price point. Not at all true. All you need to do is take your camera into a dark room for proof. It can take useful pictures in environments you can't see. And with some manual control and safety precautions (seriously, don't actually do this) you'll note you can shoot useful photos of things that are very near bright sources like the…

Dynamic range is the ability to see things in both direct sunlight AND in dark shadows at the same time. You need to be able to see pedestrians that are both directly lit by the sun and in the darkest shadows in the same frame of video. No long exposures, no multiple exposures with varying exposure -- a single frame. I don't know of any 24-32-bit per channel sensors, and that's what you'd need. We agree on vision pro…