4 ms·
Thankfully most CCTVs are so crappy and so low framerate, I doubt they can get much out of it. If you want to record a particular person through a window, for
by imaginenore 12y ago
Thankfully most CCTVs are so crappy and so low framerate, I doubt they can get much out of it.
If you want to record a particular person through a window, for instance, you can get a laser microphone that catches the vibrations of the glass.
- petercooper 12y agoYeah, I've heard that's what the spies use, although that does require specific effort. What I find more intriguing about this development is how pre-existing footage could be used. While HD CCTV is certainly not popular, I suspect enough has been said in the presence of existing HD video to incriminate a few people :-)
- protopete 12y agoI think it unlikely that pre-existing footage can be used, because HD video is almost always compressed, thus masking the minute vibrations in the pixels. The algorithm described in the article work best for uncompressed video directly from the image sensor, and they can run it in real-time without needing to store the video.