Microsoft Technology Licensing, LLC

Tim Burrell

Zhengyou Zhang

Zicheng Liu

Michael John Conrad

Qin Cai

Dijia Wu

Xu Miao

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.

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Kirkland, WA, United States of America

Tim Burrell