Eye tracker with visual feedback

Abstract

The present invention relates to entry of control commands into a computer in response to eye-tracker detected movement sequences of a point of regard (130) over a graphical display, which is associated with the computer. A processing module in the computer causes the display to present graphical feedback information in the form of a data-manipulating window (220a), which visually conf irms any entered control commands. The data-manipulating window (220a) is presented at a position relative to an active control object (220A) on the display, such that a center point of the window is located within a relatively small offset distance from a center point of the active control object. The window (220a) includes graphical information, which symbolizes an activity portion (210) of the display presently being the object of an eye-tracker-controlled entry of control commands. Moreover, the information in the window (220a) is repeatedly updated in response to the eye-tracker-controlled entry of control commands.

Description

Eye tracker with visual feedback technical field The present invention generally relates to automatic eye tracking in which visual feedback information is provided to the user (user) during operation of the eye tracker. More specifically, the invention relates to a system according to the preamble of claim 1 and a method according to the preamble of claim 13 . The invention also relates to a computer program according to claim 25 and a computer readable medium according to claim 26 . Background technique The concept of eye tracking is well known in the art and a number of different techniques have been developed to achieve automatic eye and gaze tracking (gazetracking). In long-distance non-obtrusive eye tracking, the most commonly used design is based on the so-called Pupil Central Corneal Reflection (PCCR) method, which allows determination of the position of the eye as well as the gaze direction. Thus, a point of regard can be assessed, eg on a computer display, so th...

AI Technical Summary

Problems solved by technology

But this strategy is also problematic because it requires a mechanical input device and it only provides one possible location for an eye-controllable interface, leaving no option for having more than one type of eye-control signal

Therefore, the flexibility is relatively low

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