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Through-Wall Human Pose Estimation Using Radio Signals

rfpose.csail.mit.edu

131–140 of 180 posts

Re: Through-Wall Human Pose Estimation Using Radio Signals

#131
post #72

Earlier quoted context omitted.

A good place to start would be the paper's references.

I went to the website and casually looked down. There was a "see also" section. Browsed through those and remembered Prof Dina Katabi demonstrating this concept before Prez Obama in the White House, few years ago. Will go through references too :)

I come at this entirely from the ML side, not the hardware one, so that stuff is a mystery to me :-)

Re: Through-Wall Human Pose Estimation Using Radio Signals

#132
post #130

Earlier quoted context omitted.

It solves the problem of attracting American talent, not talent in general. Immigrants get "paid" more than citizens to do a PhD in the U.S. because there's a green card "stapled" to each degree, which is of no value to citizens but of significant value to immigrants. I called the argument "Devil's Advocate" because it is more than a little thankless to complain about someone working hard to obtain a privilege you we…

>It still hurts to have your dream job undercut by someone else, though. What an absolutely atrocious way to think of your fellow man... If someone else is getting the job you want instead of you, they worked harder for it than you did. If you want your dream job, you need to be prepared to compete for it, regardless of what color skin the competition happens to have.

> If someone else is getting the job you want instead of you, they worked harder for it than you did.

No, that's not a valid generalization. They may have worked less hard and been more talented. They may have worked less hard, been less talented, but had the good fortune to have better social connections. They may have worked less hard, been less talented, but benefit from non-germane status-based discrimination. Or, well, lots of other possibilities.

Re: Through-Wall Human Pose Estimation Using Radio Signals

#133
post #130

Earlier quoted context omitted.

It solves the problem of attracting American talent, not talent in general. Immigrants get "paid" more than citizens to do a PhD in the U.S. because there's a green card "stapled" to each degree, which is of no value to citizens but of significant value to immigrants. I called the argument "Devil's Advocate" because it is more than a little thankless to complain about someone working hard to obtain a privilege you we…

>It still hurts to have your dream job undercut by someone else, though. What an absolutely atrocious way to think of your fellow man... If someone else is getting the job you want instead of you, they worked harder for it than you did. If you want your dream job, you need to be prepared to compete for it, regardless of what color skin the competition happens to have.

I declare support for a cause dramatically against my own interest but mention that it "still hurts" to do so (on account, you know, of it being against my interest) and you call my feeling an atrocity? It's not enough to merely do the right thing, I must also revel in the pain it causes me?

That's sick, it's an atrocious way to think of your fellow man, and it's the very attitude that put Donald Trump in office.

> If you want your dream job, you need to be prepared to compete...

Your post history suggests you are an American. Unless you are an American PhD student, you are almost certainly benefiting immensely from much stronger protectionism at this very moment, so take your self-righteousness, and stuff it.

Re: Through-Wall Human Pose Estimation Using Radio Signals

#135
post #22
post #6

Love it. This is a game mechanic / movie superhero device that's been around a long time, just love the fact that this does it so simply and with so much promise. As sensitivity and the quality of the neural net increases, combined with AR, this is going to make super soldiers out of SWAT teams.

but thermal imaging is already available without AI or WiFi..

You might want to take a look at Big Clive's video about the radar motion detectors in Chinese E27 socket LED bulbs [0], which have become cheaper even back in mid-2016 than good old PIR motion detectors. The latter are basically a castrated Flir-style camera, the former closer to this.

[0]: https://www.youtube.com/watch?v=FgdXRLjYkc4

Re: Through-Wall Human Pose Estimation Using Radio Signals

#136

I've noticed, recently, that literally every major chain store I go into blocks my cell signal. I get full bars outside, perfect LTE, and about 5 ft past the glass doors, I'm suddenly cut off. Specifically, Meijer grocery stores and Home Depot are the worst offenders. Coincidentally they offer free in store WiFi to track me with, so I turn off my wifi radio on both smartphone and smartwatch before walking in the door…

It's somewhat similar, but AT&T (and Apple) have forced my iPhone to always join the "attwifi" public wireless networks (present in Home Depot, airports, etc.). I can't make my iPhone NOT auto-join it, no matter how many steps, guides, hop-on-one-foot voodoo that I've tried. The wireless network is terrible at everything except signal strength.

This isn’t something AT&T can force, afaik.

Two things:

1. Go to Settings > WiFi and turn Ask to Join Networks ON.

2. Any time you are auto-connected to a network and don’t want to do that again, go to Settings > WiFi, tap the blue info icon next to the currently active wifi network, and then tap Forget this Network when the details show up.

Ask to Join Networks is usually off by default. That means your phone will always attempt to join any public wifi without asking you first. Apple thinks this is friendlier for people. All known networks, once joined, will forever be auto rejoined in the future unless you turn Ask ON and forget each network you connect to (except those you trust and want to auto-join).

Re: Through-Wall Human Pose Estimation Using Radio Signals

#137

We could be using this technology to see tumors and other pathologies through patients’ skin. Instead we’re using it to give soldiers and spies x-ray vision.

Why can't it be both? Science and technology advance in often unexpected directions and for new purposes all the time. Satellites in orbit came from ICBM research, GPS from military location tracking, the tiny electronics in your phone are the grandchildren of at least one miniature spy device.

Re: Through-Wall Human Pose Estimation Using Radio Signals

#139

Use ultra-wideband radio pulses, an array of a few thousand 3D printed UWB antennas and a phased-array scanning beam. You'll get a machine you could fit in the back of a truck that can scan a city block in real-time to mm precision. Sweet dreams, citizen.

So Dark Knight style imagery, all from 1 truck?

What's the range?

Re: Through-Wall Human Pose Estimation Using Radio Signals

#140

Use ultra-wideband radio pulses, an array of a few thousand 3D printed UWB antennas and a phased-array scanning beam. You'll get a machine you could fit in the back of a truck that can scan a city block in real-time to mm precision. Sweet dreams, citizen.

Potentially not that simple, as there are fundamental limits on the information capacity of a MIMO system, based on the surface area of the volume occupied by the antenna array (in wavelengths squared). The capacity limits apply whether you use the array for communications or radar, as both are governed by Information Theory.

Not to say that it can't be done, but the maths exists to definitively prove whether it can be, so no need for speculation and tinfoil. My gut feeling is that you could scan a small volume from afar, but not a whole block. No, I haven't done the maths.

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