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It's easier than ever to de-censor videos

(www.jeffgeerling.com)
382 points DamonHD | 1 comments | 15 Apr 25 17:12 UTC | HN request time: 0.281s | source
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its-summertime ◴[15 Apr 25 19:33 UTC] No.43697407[source]▶
Speaking of, the Lockpicking Lawyer's "Thank you" video https://www.youtube.com/watch?v=CwuEPREECXI always irked me a bit, yeah its blurred, but as can be seen, (and as was possible back then, and way before then too, recovering poor data from windowed input has been a thing for 50+ years (e.g. radio signals, scanning tools, etc), if you think about it, its a cheap way to shift costs from physical improvement to computational improvement, just have a shutter), and yet he didn't block the information out, only blurred it
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IshKebab ◴[15 Apr 25 21:25 UTC] No.43698576[source]▶
That's a totally different scenario. You can't unblur that video.
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its-summertime ◴[15 Apr 25 22:35 UTC] No.43699254[source]▶
Why not? Would you be willing to stake hypothetical customer data on your assumptions?
replies(1): >>43702384 #
1. IshKebab ◴[16 Apr 25 07:08 UTC] No.43702384[source]▶
Because in real videos where blurring is done by physical processes there is too much additional noise and uncertainty in the blurring process.

Unblurring is an extremely ill-posed problem so any noise or modelling errors get massively amplified.

In only works in this case because there is essentially zero noise, and the correlation between source frames is an exact move.

Yes I would stake hypothetical customer data on this.