YouTubers are upscaling the past to 4K. Historians want them to stop

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[–]ReeferMadness 4 insightful - 1 fun4 insightful - 0 fun5 insightful - 1 fun -  (3 children)

There are different ways to do this. Some of them are bullshit, like adding fake data just to make the picture sharper. But you can also analyze a video frame by frame and get new information from how each pixel changes as the image moves. Then use that actual data to sharpen the image. That is a technique that is going to grow a lot with AI learning algorithms.

There was already a demonstration from some college a while ago where they could take any video and amplify movement and color changes so that you could see how fast someone was breathing and how fast their heart rate was. It was literally a video lie detector. That was hushed up pretty quickly.

[–][deleted] 9 insightful - 1 fun9 insightful - 0 fun10 insightful - 1 fun -  (2 children)

Just a nitpick, "lie detectors" are not lie detectors. At most they detect elevated mood. There is no special physiological response exclusively for lies, and is very difficult with extensive training for neurological machines to even reach reasonable reliability for that same purpose. Generally speaking, just generally, only because a lie involves more creative thinking on average and inhibition cognitively.

"Lie detectors" are pseudoscience but cops love it when people think they're not, because it gets them a lot of free confessions by idiotic criminals.

[–]ReeferMadness 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (1 child)

They don't work reliably, and can easily be tricked when you know you are being tested. But there is a response to lying and it does change your heart rate and breathing rate. If you don't know you are being tested you can't trick it.

It can still be an incredibly powerful tool.

[–][deleted] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

Again, there is no consistent physiological response exclusively for lies. The response, that only some people have, is in response to elevated moods like anxiety. They don't work, at all, for anyone who has anxiety. They're unreliable for everyone else, and in particular lack scientific grounding in both validity and reliability (They don't detect lies - not valid - and unreliably detect what they do detect).

The point really needs to be driven home: There is. No. Physiological. Response. Solely. For. Lies. There are simply myths that people have variously invented about such responses, like the claim you "look to the left", that've been invented to more easily excuse chasing people on zero evidence.