Patent ID: 9411417
Filing Date: 2016-08-09
CPC Classification: G06F,G06K,G06T

Claim Text:
1. An eve gaze tracking system for determining a point of regard (POR) of a user, the system comprising: a gaze data acquisition system comprising a plurality of light sources and a plurality of image sensors, the plurality of light sources arranged to emit light to a head of the user, and the plurality of image sensors configured to receive light from the head of the user to capture gaze data thereof: a gaze tracking module comprising an ocular feature extraction module, a POR calculation module and a POR averaging module, wherein the ocular feature extraction module is configured to process the gaze data and to extract in relation to each image sensor a set of ocular features, and is further configured to determine, for each set of ocular features related to a captured frame, a confidence value associated with an accuracy of captured parameters; and wherein the POR calculation module is configured to determine an estimated POR value and the POR averaging module is configured to determine the confidence value of the estimated POR value, said confidence value being proportional to weight factors related to head pose angle of the user and feature detection reliability.