公开(公告)号：US10032074B2

公开(公告)日：2018-07-24

申请号：US15206670

申请日：2016-07-11

Applicant: Google Inc.

Inventor： Nelson G. Publicover ,  William C. Torch ,  Christopher N. Spitler

IPC: G06K9/00 ,  A61B3/113 ,  A61B3/024 ,  G06F3/01 ,  A61B3/00 ,  H04N5/225 ,  H04N5/247 ,  G02B27/00 ,  G06T7/73

Abstract: A system mounted within eyewear or headwear to unobtrusively produce and track reference locations on the surface of one or both eyes of an observer is provided to improve the accuracy of gaze tracking. The system utilizes multiple illumination sources and/or multiple cameras to generate and observe glints from multiple directions. The use of multiple illumination sources and cameras can compensate for the complex, three-dimensional geometry of the head and the significant anatomical variations of the head and eye region that occurs among individuals. The system continuously tracks the initial placement and any slippage of eyewear or headwear. In addition, the use of multiple illumination sources and cameras can maintain high-precision, dynamic eye tracking as an eye moves through its full physiological range. Furthermore, illumination sources placed in the normal line-of-sight of the device wearer increase the accuracy of gaze tracking by producing reference vectors that are close to the visual axis of the device wearer.

公开(公告)号：US10025379B2

公开(公告)日：2018-07-17

申请号：US14099908

申请日：2013-12-06

Applicant: Google Inc.

Inventor： Eliot Francis Drake ,  Gholamreza Amayeh ,  Angelique Kano ,  Dave Le Blanc ,  Zhiming Liu ,  Lewis James Marggraff ,  Rory Pierce ,  Nelson G. Publicover ,  Christopher N. Spitler ,  Michael Vacchina

IPC: H04N9/47 ,  H04N7/18 ,  G06F3/01 ,  A61B3/14 ,  G03B17/38 ,  G06F1/16

CPC classification number: G06F3/013 ,  A61B3/14 ,  G03B17/38 ,  G03B2213/025 ,  G06F1/163

Abstract: Devices and methods are provided for eye-tracking, e.g., including a freeform optical assembly and/or a modular design. In an exemplary embodiment, a device and method are provided that includes a wearable device on a user's head, the wearable device including a scene camera oriented to capture images of the user's surroundings. The user may perform a predetermined action with the user's eye to activate a photo feature of the wearable device, gaze at a region within the user's surroundings, the wearable device determining a focal point and limited field-of-view for the camera imaging field based on the center point, and activate the camera to capture an image of the limited field-of-view centered around the focal point.