Contents 1. Introduction
In typical surveillance systems today, the raw live video stream of a huge number of cameras is displayed on a set of monitors, so the security personnel can respond to situations accordingly. For example, in a typical Las Vegas casino, approximately 1,700 cameras are installed [1]. If you want to track a suspect on his way, you have to manually follow him within a certain camera. Additionally, when he leaves one camera's view, you have to switch to an appropriate camera manually and put yourself in the new point of view to keep up tracking. A more intuitive 3D visualization where the person's path is integrated from a distributed network of smart cameras in one consistent world model, independent of all cameras, is not yet available.
