> Thermal IR cameras are pretty well established as equipment for e.g. 
> police helicopters to search for or track people (particularly at night).

I'll bet they're damned expensive though. ;-)

> Sound "images" are common for sonar systems. And ultrasound imaging 
> devices, for that matter.

That's not "taking a picture of sound". That's "using sound to take a 
picture". If you want to split hairs, anyway... ;-)

Post a reply to this message