Point-of-gaze estimation

Patent Granted Eye tracking is the process of measuring either the point of gaze (where one is looking) or the motion of an eye relative to the head. An eye tracker is a device for measuring eye positions and eye movement. Eye trackers are used in research on the visual system, in psychology, in cognitive linguistics, marketing, as an input device for human computer interaction, and in product design. There are a number of methods for measuring eye movement.