Smooth pursuit gaze tracking
AssigneeUmoove Services Ltd.
InventorYitzchak KEMPINSKI
Life of this patent
Estimating the term…
Abstract
A system and method to calibrate a gaze point on a screen of an eye as the eye watches an object move on the screen. A movement of an eye may be tracked in a series of images, and a pattern of the movement of the eye may be detected. Detection of a pattern of eye movements that is associated with watching the moving object on a screen may be an indication that the eye was watching the object at the time that the pattern of eye movements was detected. The identified gaze point may be part of a calibration for purpose of gaze tracking. The detected pattern may be included in an indication that the viewer looked at the moving object.
Claims21
A method for calibrating a gaze of a viewer of an electronic screen, the method comprising:
- displaying on said electronic screen a moving object during a time period;
- acquiring during said time period a plurality of images of an eye of said viewer of said screen;
- identifying a pattern of movements of said eye during said time period, said pattern indicative of viewing by said eye of the moving object;
- calibrating a gaze point of said eye during said time period with a position on said screen of said object during said time period.
A method for determining if a user of an electronic display screen has viewed content that is displayed on the screen, the method comprising:
- displaying on the screen a moving object concurrent with a time period during which the content is displayed;
- acquiring during said time period a plurality of images of an eye of said user;
- and
- determining that the user has viewed the content upon identifying a pattern of movement of said eye that is indicative of smooth pursuit by said eye during said time period.
A gaze tracking device comprising:
- a display screen;
- an eye tracker to track movement of an eye of a user who is viewing the screen;
- a processor in communication with a computer readable medium, wherein the computer readable medium contains a set of instructions wherein the processing unit is configured to carry out the set of instructions to:
- display on the screen a moving object while concurrently operating the eye tracker to track movement of the eye;
- concurrently with the display of the object, operate the eye tracker to detect a plurality of successive positions of a feature of the eye of the user;
- identify a movement of the eye that is indicative of viewing of the object;
- and
- calibrate a gaze point of the eye by associating a tracked position of the eye feature with a concurrent position of the object.
Dependencies are inferred from the claim text.