The radiation sensors transmit signals to a video mixer (20) to produce an image of the scene in a display assembly (22, 30 and 32).

The proposed system allows splitting the processing ability of a big vision mixer into smaller sub units without losing real-time processing behavior.

Device comprising a wide angle camera (1) which is connected to a Croma Key equipment, such as an image mixer (7), and a background (2) in Croma colour.