Eye tracking
AssigneeQinetiq Limited
InventorsLaurence Durnell, Donald Nigel Jarrett
Life of this patent
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Abstract
An eye tracking apparatus and method of eye monitoring, comprising a target display adapted to project a moveable image of a target into a user's field of vision, an illumination source adapted to project a reference point onto a user's eye, a sensor adapted to monitor a user's eye, and a processor adapted to determine the position of a feature of a user's eye relative to the reference point, wherein the apparatus is arranged such that said determined position provides a direct indication of eye direction relative to the target direction.
Claims20
An eye tracking apparatus comprising
- a) a target display adapted to project a moveable image of a target into a user's field of vision,
- b) an illumination source adapted to project a reference point onto a user's eye,
- c) a sensor adapted to monitor a user's eye, and
- d) a processor adapted to determine the position of a feature of a user's eye relative to the reference point,
- wherein the apparatus is arranged such that said determined position provides a direct indication of eye direction relative to the target direction.
A method of eye monitoring, in which a moveable image of a target is projected into a user's field of vision, and an image of the user's eye is formed on an image sensor, said method comprising:
- (a) projecting a reference point onto the user's eye,
- (b) arranging for the selected reference point to provide, in the image, an indication of the position of the target on the user's eye,
- (c) analysing the image to determine the position of a feature of the user's eye with respect to the reference point.
Dependencies are inferred from the claim text.