4 ms·
Great question about the angle actually. There's previous work by an applied physics group [1] that shows the detectable field-of-view from the camera is about
by frizensami 5y ago
Great question about the angle actually. There's previous work by an applied physics group [1] that shows the detectable field-of-view from the camera is about 20 degrees. Our experiments also confirm that.
We also think using the smartphone flashlight (if that's what you mean) is the best way forward. That's already very helpful (and recommended) for humans to find hidden cameras, and it should be a useful extra modality for our work too.
[1] https://ieeexplore.ieee.org/document/8790792 https://ieeexplore.ieee.org/document/8790792
- jcun4128 5y agoYou don't have to answer but, I'm assuming by the phone's API you can steer the beam/have an exact precision known of the minimum angle you can sample? That's pretty cool tech to work with.
- frizensami 5y agoUnfortunately we can't steer the ToF beam, so the user has to move the phone around to multiple positions (a 2D grid of positions, basically). The app provides pretty clear guidance on where to move the phone to cover all possible spots, though.