5 ms·
>Vision fps: ~18 Surely that can't be right
by daenz 7y ago
>Vision fps: ~18
Surely that can't be right
- jedberg 7y agoProbably is. The computer power necessary to go higher would use all the battery and take up a ton of space. If you've seen other self driving cars, they usually have no trunk because the entire thing is server racks.
- jamestimmins 7y agoMaybe this is ridiculous, but is it feasible that Tesla plans to use the SpaceX Starlink satellites to offload data for processing remotely?
- jedberg 7y agoUnlikely, too risky. Even the slightest glitch in the network could be disastrous. The car has to be at least smart enough to pull over and stop safely.
- mAritz 7y agoWhen talking about computation being a power drain, one could imagine a scenario where certain computations that can deal with the latency of starlink internet could be offloaded by default to the cloud. When a network failure is detected or results take too long to come in, the on-board computer could still take over the same computations, resulting in more power drain for a short moment.
- gzer0 7y agoThere are 4,000+ planned starlink satellites that are planning to be deployed in total. This, in addition to backup with cell towers in case starlink goes down really makes this scenario risk-free.
- daniel2x 7y agoHave you ever filled out a Captcha identifying roadsigns?
- jamestimmins 7y agoI'm not sure I follow? I'm just asking whether it's possible that the underlying processing could take place in a remote server, rather than an onboard computer in the car.
- daniel2x 7y agoI was making a subtle joke that filling out a captcha identifying roadsigns could be the remote server that drives someone's car.
- maccam94 7y agoThe cameras are running at higher fps, but the processed outputs don't need to go that fast. At 65MPH, 18fps is one frame for every 5 feet of travel.
- kevin_thibedeau 7y agoNot fast enough to react to someone swerving into your lane.
- ygra 7y agoCars don't tend to jump sideways all of a sudden (and if they do, then usually by outside force, which tends to be hard to avoid). There's plenty of frames to detect that (note that the view shown is not the only camera, otherwise making a turn safely would be fairly impossible).
- kevin_thibedeau 7y agoThey don't have to "jump" sideways. All it takes is someone assuming you aren't there and moving into the space you occupy.
- kickopotomus 7y agoMuch faster than a human would react. Acutely focused humans generally take at least 1 second to hit the brakes in an emergency. Longer if distracted or tired[1]. [1]: https://www.researchgate.net/publication/233039156_Brake_Reaction_Times_and_Driver_Behavior_Analysis https://www.researchgate.net/publication/233039156_Brake_Rea...
- kevin_thibedeau 7y agoBraking is slowed by the limitations of nerve conduction down to the legs. You can swerve away from danger with faster reaction time.
- 7y ago