Figure 2.  Foveal inset system illustration. Illustration of the
foveal inset display system configuration including display
screen, projectors, cameras, and pan-tilt unit. The head node
generates the projection of the foveal inset, controls the PTU
position, and controls the rendering nodes and the camera nodes.
Each rendering node projects one tile onto the rear of the
projection screen. The camera nodes process video data for
calibration and laser pointer-based interaction. The foveal
inset is front-projected onto the projection screen.