4 ms·
I mean... A quick search would show you that masks can work. But I’ll bite. It’s really precise 3D with a greyscale non-thermal IR image. Could be inaccurate
by _tulpa 8y ago
I mean... A quick search would show you that masks can work. But I’ll bite.
It’s really precise 3D with a greyscale non-thermal IR image.
Could be inaccurate masks? Missing details around the eyes and mouth and other important areas? Do masks have eyes with a discernable gaze direction? Do they have microexpressions or natural facial deformation? Do the eyes move?
There’s a buttload of stuff they could be measuring that is insanely hard to replicate with a mask. Besides, a thermal map would be pretty much useless even if the hardware was capable of thermal imaging. Skin temperature varies a lot (and not always uniformly) based on ambient conditions, physical exertion, being sick, sitting in direct sunlight, etc, etc.
- rtkwe 8y agoHmm I wonder if it is gaze detection. Seems like if you can detect gaze direction fast enough you could use the presence or absence of saccades to tell if it's a real live person or not. Doing that in a mask/bust would be fairly difficult. It could also be looking at small changes like the periodic flushing that happens (see [0]). Though I'm not sure how well that would work on a moving phone but it could work I think just at a broader scale. FaceID is really fast though so not certain there's enough time to gather the data for that either. [0] http://people.csail.mit.edu/mrub/vidmag/ http://people.csail.mit.edu/mrub/vidmag/