82 points by danielmorozoff 5 hours ago | 9 comments
V__ 1 minute ago
This is so interesting. Especially since it's kinda weird to train a robot to mimicking human play. I wonder what a perfect robot what actually behave like.

It wouldn't need to split-step to activate muscles, the footwork would probably be minimal. I imagine a lot of different unusual looking swings to confuse human players, while still making perfect contact. It could make really late drop shots or even rotate the racket at the last moment for crazy angles.

Would love to watch this.

ordu 1 hour ago
It is interesting to watch. The movements of the robot are robot-like. I mean, wtf, there were no robot playing tennis before, but I have an idea how a robot playing tennis would be like, and this video confirms my expectations. Sharp, unsure movements, a lot of hesitation, ...

Movies pictured robots like this long before this become possible, but how did producers guessed it?

Or maybe movies rendered different kinds of robots, but this video bring into my memory only those, that look like this. A kind of confirmation bias?

KolmogorovComp 2 hours ago
Nothing constructive to say, besides that the video really shows we're entering into a Sci-fi era.
hbcondo714 22 minutes ago
Impressive! Looks like a nice alternative or evolutionary step for a ball machine.
blueblisters 34 minutes ago
Very impressive. But it doesn’t solve the whole problem yet.

The robot and ball pose is estimated by high speed mocap cameras, and is fed to the policy.

I imagine estimating that with onboard cameras - how humans do it - is much harder.

Almost all of closed loop robotics is a state estimation problem. Control is “solved” if you can estimate state well enough.

ohyoutravel 30 minutes ago
We know. Just appreciate it for what it is. Which is…awesome.
Void_ 2 hours ago
This just makes me want to play tennis right now. Such an addictive sports.
3 hours ago
Aboutplants 1 hour ago
Really impressive. In a few years there will be robotic AI instructors for the wealthy and their kids
squibonpig 59 minutes ago
Maybe for novelty, but the rich usually just pay humans to act like robots.
ohyoutravel 1 hour ago
Why can some Temu humanoid robot do this sort of impressive, coordinated, high-speed thing, but Tesla Optimus completely sucks at everything unless they’re moving at 0.02m/s (and even then they’re not great)? Like, train this thing on the latent space of folding my clothes out of the dryer and I will send you my money.
10xDev 1 hour ago
Relax, it is one demo. It probably can't handle the millions of edge cases that exist in real life.
ohyoutravel 1 hour ago
I’d be OK (and from a product perspective think it would be a win) if Optimus just mastered one high-value skill like clothes folding. Yet, here we are.