Loading patent…
AssigneeMatchic Labs
InventorsEric Clément Guitteaud, Pierre Youri Bascoulergue
Estimating the term…
The present disclosure relates to a device (10) for supporting, in motion, a mobile terminal (20) having a display surface (21), such as a mobile phone or a similar object. The invention is characterised in that it comprises: a supporting element (11) forming a hand grip for the device; and a plate (12) mounted such that it can move in relation to the supporting element (11), said plate (12) forming a housing that is intended to receive the mobile terminal in the use position, in which the display surface (21) can be observed by a user. The device comprises a plurality of reference light sources (16a, 16b, 16c, 16d) linked to the supporting element (11), which can emit light towards the user's eye and which are disposed in the environment of the housing in a two-dimensional array coplanar with the display surface (21) of the mobile terminal that is intended to be received in the housing.
A method for tracking the gaze of a user over a display surface of a mobile terminal observed by the user comprising determining the position of the gaze of the user on the display surface being observed, in which is provided a first video camera situated in the axis of the gaze of the user and a first light source directed toward the eye and situated near to the objective lens of the first video camera, for collecting a first video signal comprising at least the image of the pupil and that of the corneal reflection of the first light source, a second video signal comprising images of the display surface is collected, the first video signal is analyzed for measuring in the reference frame of the eye the direction of gaze as a function of the position of the center of the pupil with respect to the center of the corneal reflection of the first light source and a cursor representing the position of the gaze on the display surface being observed is displayed in the second video signal as a function of the direction of gaze measured in the reference frame of the eye, characterized in that the second video signal is captured in a reference frame distinct from the reference frame of the first video camera, linked to that of the display surface being observed, a plurality of reference light sources are positioned in the reference frame of capture of the second video signal directed toward the eye and disposed according to a two-dimensional array coplanar with the display surface being observed, such that the first video signal collected by the first video camera furthermore comprises the image of the corneal reflections of the reference light sources on the eye and in that the first video signal is analyzed so as to supply the position of the center of the corneal reflections of the reference light sources on the eye and the position of the gaze in the plane of the display surface being observed is determined based on the position of the center of the corneal reflections of the reference light sources on the eye and on the direction of gaze measured in the reference frame of the eye.
Dependencies are inferred from the claim text.