Is Elon Musk Wrong about Lidar? A Quantitative Study

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10 pointsayw3 comments

Wow, calculating 3D data using only one camera.

Did you notice we use two eyes to judge distance? Did they note there can be even more than two cameras on a car?

I think if more than one camera is used you can get very accurate 3D data.

Missed a section, yes they did say further research will look at using stereo vision

1. While stereo depth estimation would work in theory, none of the self-driving cars actually have camera configurations that allow for stereo depth estimation (see here: https://electrek.co/wp-content/uploads/sites/3/2016/10/tesla...)

2. Stereo depth estimation is quite unreliable in practice because it requires you to match up pixels between the two images very precisely (1-2px difference can be a large disparity in distance), so it is not reliably used.

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