Patents by Inventor Mattias I. Karlsson

Mattias I. Karlsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Support glint for remote eye tracking
    Patent number: 11144755
    Abstract: Methods and corresponding systems of controlling illuminators in an eye tracking system are disclosed. The system includes a first image sensor, a second image sensor, a first close illuminator arranged to capture bright pupil images by the first image sensor, a second close illuminator arranged to capture bright pupil images by the second image sensor and one or more far illuminators arranged to capture dark pupil images by the first image sensor and the second image sensor. In the methods main and support illuminators are controlled during exposure of a first and a second image sensor to produce enhanced contrast and glint position for eye/gaze tracking.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: October 12, 2021
    Assignee: Tobii AB
    Inventors: Jonas Sjöstrand, Anders Dahl, Mattias I Karlsson
  • SUPPORT GLINT FOR REMOTE EYE TRACKING
    Publication number: 20190303646
    Abstract: Methods and corresponding systems of controlling illuminators in an eye tracking system are disclosed. The system includes a first image sensor, a second image sensor, a first close illuminator arranged to capture bright pupil images by the first image sensor, a second close illuminator arranged to capture bright pupil images by the second image sensor and one or more far illuminators arranged to capture dark pupil images by the first image sensor and the second image sensor. In the methods main and support illuminators are controlled during exposure of a first and a second image sensor to produce enhanced contrast and glint position for eye/gaze tracking.
    Type: Application
    Filed: March 28, 2019
    Publication date: October 3, 2019
    Applicant: Tobii AB
    Inventors: Jonas Sjöstrand, Anders Dahl, Mattias I. Karlsson