It's a minor nit-pick either way but a speed camera doesn't make an image of the speed nor usually use images to calculate speed. It usually measures the speed

It's a minor nit-pick either way but a speed camera doesn't make an image of the speed nor usually use images to calculate speed. It usually measures the speed using radar, laser or wire loops and then captures an image. So I think the term "noise camera" makes sense in this context.