COMPUTER-AIDED VIDEO-BASED METHOD FOR CONTACTLESSLY DETERMINING THE DIRECTION OF VIEW PERTAINING TO AN EYE OF A USER FOR THE EYE-GUIDED INTERACTION BETWEEN HUMAN BEINGS AND COMPUTERS AND A DEVICE FOR CARRYING OUT SAID METHOD

摘要

Interfaces that are controlled by the direction view in the interaction between human beings and computers offer totally new possibilities to the user. The aim of the invention is to detect the current direction of view (VD) by means of which the user (UE) can specifically select functions. The cornea reflex method is used. Eye vectors (AV) can thus be detected between the centre of the pupil (ZP) and reflection points (RP) on the cornea (CA) and can be associated to the fixation point (FP) that is currently looked at by the user (UE), whereby said reflection points are produced by infrared light (IRS). Said association is produced by the function of the direction of view (VDF), whereby said function is detected during calibration (C) which, in known methods, requires much concentration and time of the user (UE). According to the inventive method, the system is initially calibrated (C) to a reference user (RE). Self-balancing recalibration (RC) is then carried out for the individual user (UE). A mapping function (MF) is detected during recalibration (RC). The individual eye vectors (EVU) can be converted to the reference eye vectors (EVR) by means of said mapping function. Recalibration (RC) takes place without the user realising. The inventive method can be used in medical diagnostics, psycho-optical examinations and the eye-controlled interaction with multimodal computers.