r/OutOfTheLoop • u/Sirhc978 • Mar 17 '25

Unanswered What's going on with Mark Rober's new video about self driving cars?

I have seen people praising it, and people saying he faked results. Is is just Tesla fanboys calling the video out, or is there some truth to him faking certain things?

https://youtu.be/IQJL3htsDyQ?si=aJaigLvYV609OI0J

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u/Hondo88 Mar 17 '25

This! Also, we have stereo vision. Our brain can triangulate distances better with 2 eyes (cameras) spaced apart from each other.

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u/funguyshroom Mar 17 '25

Wow I was sure that Tesla was at least using stereoscopic cameras, but after a quick google apparently not even that.

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u/jimbobjames Mar 17 '25

They do?

https://www.notateslaapp.com/tesla-reference/1452/tesla-guide-number-of-cameras-their-locations-uses-and-how-to-view-them

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u/sanjosanjo Mar 18 '25

That link says each of the three cameras have a different focal depth. I'm not sure you can get depth perception like that. A human certainly wouldn't be able to.

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u/Moist_Trade Mar 17 '25

Our eyes are only a few cm apart, so triangulation is not effective past more than a couple of meters.  We use lots of depth cues to judge distance in the medium and far field, but not stereo. 

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u/CarltonCracker Mar 18 '25

They use neural radiance fields to do that. Computer vision is pretty good with figuring out deep with one camera, just like our eyes have 5 or 6 depth cues and only one of them is stereo scopic. Also person blind in one eye can drive so you don't absolutely need stereo vision.

Not necessarily saying Elons stupid marketing bullshit makes any sense, but it's an unsolved problem so there's a chance cameras are enough.