A new camera system is being tested to catch car pool (car-sharing) lane in Leeds, UK. Before, the police used labor-intensive and ordinary CCTV that could be fooled by dogs or inflatable dolls.
The new camera promises to be better: it counts people by detecting the blood and water content of the human skin!
The camera instantly illuminates the windscreen area with two different wavelengths of infrared light. Two specialised digital infrared pictures are taken of the windscreen.
The system is programmed to detect the blood and water levels in skin and then it uses certain algorithms to distinguish faces, as opposed to hands.
Within a fraction of a second, the vehicle occupancy count is determined using on-board electronics.