There has to be a minimum of two cameras for the VGJ-system, one over each goal. These cameras have to be mounted approx. 50cm in front of the goal line. As Figure 2.1 shows, the cameras have to be mounted in such way that the most of the area in front of the net is covered on the video. Figure 2.2 shows how the cameras should NOT be mounted.

camera position vgj camera correct    camera position vgj camera wrong
Figure 2.1: Correct mounting
of the VGJ cameras 
  Figure 2.2: Wrong mounting
of the VGJ cameras