A method for giving commands by means of eye movements, characterised in that it comprises following stages: detecting an image of the pupil and detecting an initial fixation position of a centre of a pupil (O) with respect to a predetermined reference system; positioning a centre of a discrete bundle of straight lines having predetermined directions, at a centre of the pupil (O) and dividing a plane of the image into discrete regions; positioning a centre of a discrete bundle of rays at the centre of the pupil (O), the bundle of rays having predetermined directions and senses; associating each discrete region to a specific directed ray belonging to the discrete bundle of orientated rays; detecting a final position of fixation assumed by the centre of the pupil (O) after a displacement thereof with respect to the initial fixation position; identifying a first displacement vector of the centre of the pupil (O) having an origin in the initial position of the centre of the pupil (O) and a vertex in the final position of the centre of the pupil (O); associating one of the orientated rays of the discrete bundle to the direction and sense of a first displacement vector assignable to an object to be moved (P); attributing, to the first displacement vector of the object (P) associated to the orientated ray of the discrete bundle, a modulus which is identical to a modulus of the first displacement vector of the centre of the pupil (O) multiplied by a predetermined gain factor.
A METHOD FOR GIVING COMMANDS BY MEANS OF EYE MOVEMENTS / Fonda, Sergio; Corradini, Matteo; L., Bulf. - .
A METHOD FOR GIVING COMMANDS BY MEANS OF EYE MOVEMENTS
FONDA, Sergio;CORRADINI, Matteo;
Abstract
A method for giving commands by means of eye movements, characterised in that it comprises following stages: detecting an image of the pupil and detecting an initial fixation position of a centre of a pupil (O) with respect to a predetermined reference system; positioning a centre of a discrete bundle of straight lines having predetermined directions, at a centre of the pupil (O) and dividing a plane of the image into discrete regions; positioning a centre of a discrete bundle of rays at the centre of the pupil (O), the bundle of rays having predetermined directions and senses; associating each discrete region to a specific directed ray belonging to the discrete bundle of orientated rays; detecting a final position of fixation assumed by the centre of the pupil (O) after a displacement thereof with respect to the initial fixation position; identifying a first displacement vector of the centre of the pupil (O) having an origin in the initial position of the centre of the pupil (O) and a vertex in the final position of the centre of the pupil (O); associating one of the orientated rays of the discrete bundle to the direction and sense of a first displacement vector assignable to an object to be moved (P); attributing, to the first displacement vector of the object (P) associated to the orientated ray of the discrete bundle, a modulus which is identical to a modulus of the first displacement vector of the centre of the pupil (O) multiplied by a predetermined gain factor.
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