Title |
A free geometry model-independent neural eye-gaze tracking system
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Published in |
Journal of NeuroEngineering and Rehabilitation, November 2012
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DOI | 10.1186/1743-0003-9-82 |
Pubmed ID | |
Authors |
Massimo Gneo, Maurizio Schmid, Silvia Conforto, Tommaso D’Alessio |
Abstract |
Eye Gaze Tracking Systems (EGTSs) estimate the Point Of Gaze (POG) of a user. In diagnostic applications EGTSs are used to study oculomotor characteristics and abnormalities, whereas in interactive applications EGTSs are proposed as input devices for human computer interfaces (HCI), e.g. to move a cursor on the screen when mouse control is not possible, such as in the case of assistive devices for people suffering from locked-in syndrome. If the user's head remains still and the cornea rotates around its fixed centre, the pupil follows the eye in the images captured from one or more cameras, whereas the outer corneal reflection generated by an IR light source, i.e. glint, can be assumed as a fixed reference point. According to the so-called pupil centre corneal reflection method (PCCR), the POG can be thus estimated from the pupil-glint vector. |
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