Aerial Photography with RC Helicopters

Surveillance and security are concerns of any law enforcing agency around the world these days. But employing helicopters may prove to be very expensive and may not be affordable except developed countries. While looking for RC helicopters, I came upon this video in which aerial photography by RC helicopters has been exhibited.  Flying helicopters is otherwise exciting, as these are difficult to fly as compared to RC airplanes. But if  these RC helicopters also use cameras for aerial photography, it adds more to fun.

This is may be a hobby today - but may be tomorrow employing RC helicopters fitted with cameras may become a useful and affordable gadget for surveillance purposes, just like drones that are being used these days for military purposes.