decided
to track the location of the glasses
in the depth image instead
of tracking the eyes. They used that information to
compute the user’s viewpoint. This camera tracks
the user's eyes and performs a real time capturing
of both shape and appearance of any object placed
in front of the camera. The system enables
perspective stereoscopic 3D visualization to a
single user. Figure 4 shows the experimental
results. This allows the user to interact with virtual
objects through freehand actions without
handling.