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I'll say this time and again. Tesla's decision to use cameras instead of Lidar is a fundamental constraint that causes downstream problems. Lidar is accurate 1
by screye 5y ago
I'll say this time and again. Tesla's decision to use cameras instead of Lidar is a fundamental constraint that causes downstream problems.
Lidar is accurate 100% of the time. Tesla cameras create an almost as accurate reconstruction, sure. But, approaching 100% accuracy is very different from 100% accuracy.
I previously thought that having a low latency radar system was a genius way to get around the hard constraints of not hitting a physical object 100% of the time. But, in Elon's infinite wisdom, he removed it.
From Tesla's manufacturing tolerances to their range claims to their FSD systems. Tesla's approach of '99% of the time it works 100% of the time' is the kind of toxic carelessness that software engineers have allowed to seep into a hard engineering discipline where real lives are on the line. (As a once employed mechE making cars, and now an ML person writing software, I feel like I have the perspective to make this egregious claim)
'Marginally better than a distracted karen' is not the utopian FSD future I was promised.
P.s: I understand that all sensors have noise, so any claim to a 100% is dubious. But, for the purposes of this discussion, the implied meaning of a 100% should be clear.
- leobg 5y agoAFAIK Tesla uses cameras instead of LIDAR because LIDAR, by itself, will not be able to tell you what a thing is. It cannot tell you, for example, whether the thing standing at the side of the road is a stationary trash can or a human about to cross the road. Hence you have to solve vision anyway. And if you have to solve vision, you might as well go all in on cameras.
- genmud 5y agoWhich would be fine if cameras had the same clarity as eyeballs, which are hundreds of megapixels, have a physical iris, crazy wide dynamic range and a lens optimized for such a small package.
- leobg 5y agoAnd which have eyelids and tears and a human attached with hands ready to wipe if any dust or dirt gets into them. Then again, a human, even if fully focused on driving, can look only in one direction at a time. And, of course, most drivers aren’t fully focused on driving.