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Human-computer interface using high-speed and accurate tracking of user interactions

  • US 10,664,050 B2
  • Filed: 09/21/2018
  • Issued: 05/26/2020
  • Est. Priority Date: 09/21/2018
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a display configured to present an interactive environment to a user;

    an eye-tracker coupled to the display, the eye-tracker including at least two sensors, the at least two sensors being configured to record a plurality of sets of eye-movement signals from an eye of the user, each set of eye-movement signals being recorded, by each sensor from the at least two sensors;

    an interfacing device operatively coupled to the display and the eye-tracker, the interfacing device including;

    a memory; and

    a processor operatively coupled to the memory and configured to;

    receive the eye-movement signals from the at least two sensors in the eye-tracker;

    generate and present a stimulus, via the interactive environment and via the display, to the user;

    compute, based on each set of eye-movement signals from the plurality of sets of eye-movement signals, a set of gaze vectors, each gaze vector from the set of gaze vectors being associated with each sensor from the at least two sensors, the gaze vector associated with each sensor indicating a gaze angle of the eye of the user;

    determine a degree of obliqueness of each gaze vector associated with each sensor from the at least two sensors, the degree of obliqueness being relative to a vertical angle associated with that sensor;

    determine, based on the degree of obliqueness of each gaze vector associated with each sensor from the at least two sensors, a weight associated with each sensor from the at least two sensors, to generate a set of weights; and

    apply the set of weights to the plurality of sets of eye-movement signals to determine a set of calibrated eye-movement signals;

    determine, based on the calibrated eye-movement signals, a point of focus of the user;

    determine, based on the point of focus of the user, an action intended by the user; and

    implement the action intended by the user.

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