Method for determining the direction in which a user is looking

A method for determining the direction of the gaze of a user comprising acquisition of images of the eye, with the aid of at least one optical sensor, the method comprising:

• a) a first processing of acquired images which provides an item of information about the orientation of the eye, on the basis of the observation of a zone of the eye whose aspect varies with the rotation of the eye, and
• b) a second processing of these acquired images independent of the first processing which provides an item of information about the kinematics of the eye by comparing at least two successive images, the second processing comprising determination of an optical flow between two successive images of the eye,
• in which method an item of information relating to the direction of the gaze in relation to the user's head is generated on the basis at least of the items of information delivered by the first and second processings,
• in which method use is made of a device worn by the user comprising:
• at least one first optical sensor being a camera configured to acquire an image of all or part of an eye of the user,
• an electrical circuit allowing at least one preprocessing of the acquired images, so as to determine a relative displacement of the eye with respect to the camera and the evolution of the direction of gaze over time,
• in which the device comprises at least one second optical sensor configured to acquire an image of all or part of the user's eye,
• in which the first and second optical sensors allow the acquisition of images of one and the same eye of the user.