Patents by Inventor Tim Burrell

Tim Burrell 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).

  • Gaze tracking via eye gaze model
    Patent number: 9864430
    Abstract: Examples are disclosed herein that are related to gaze tracking via image data. One example provides, on a gaze tracking system comprising an image sensor, a method of determining a gaze direction, the method comprising acquiring image data via the image sensor, detecting in the image data facial features of a human subject, determining an eye rotation center based upon the facial features using a calibrated face model, determining an estimated position of a center of a lens of an eye from the image data, determining an optical axis based upon the eye rotation center and the estimated position of the center of the lens, determining a visual axis by applying an adjustment to the optical axis, determining the gaze direction based upon the visual axis, and providing an output based upon the gaze direction.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: January 9, 2018
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Dijia Wu, Michael J. Conrad, Tim Burrell, Xu Miao, Zicheng Liu, Qin Cai, Zhengyou Zhang
  • GAZE TRACKING VIA EYE GAZE MODEL
    Publication number: 20160202756
    Abstract: Examples are disclosed herein that are related to gaze tracking via image data. One example provides, on a gaze tracking system comprising an image sensor, a method of determining a gaze direction, the method comprising acquiring image data via the image sensor, detecting in the image data facial features of a human subject, determining an eye rotation center based upon the facial features using a calibrated face model, determining an estimated position of a center of a lens of an eye from the image data, determining an optical axis based upon the eye rotation center and the estimated position of the center of the lens, determining a visual axis by applying an adjustment to the optical axis, determining the gaze direction based upon the visual axis, and providing an output based upon the gaze direction.
    Type: Application
    Filed: January 9, 2015
    Publication date: July 14, 2016
    Inventors: Dijia Wu, Michael J. Conrad, Tim Burrell, Xu Miao, Zicheng Liu, Qin Cai, Zhengyou Zhang