Smart Eye Ab

Torsten Wilhelm

Emanuel Hasselberg

A method for estimating a gaze direction of a user includes acquiring an image of a face of the user, determining an approximate gaze direction based on a current head pose and a relationship between head pose and gaze direction, determining an estimated gaze direction based on detected eye features, determining a precise gaze direction based on glint position and eye features, and combining the approximate gaze direction and at least one of the estimated gaze direction and the precise gaze direction to provide a corrected gaze direction.

Determination of gaze direction

A pose of an eye of a user is determined by providing a parameterized 3D model of the eye, said model including a set of parameters which have been calibrated, acquiring (step S) at least one tracking image of the eye, identifying (step S) a plurality of characteristic features in the acquired tracking image, fitting (step S) said characteristic features with corresponding features of an optical projection of the calibrated 3D model, thereby forming a set of equations, and numerically solving (step S) the set of equations to determine the pose of the eye.

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Gothenburg, Sweden

Torsten Wilhelm