公开(公告)号：US09931069B2

公开(公告)日：2018-04-03

申请号：US14569303

申请日：2014-12-12

Applicant: Google Inc.

Inventor： Nelson G. Publicover ,  William C. Torch

IPC: A61B3/00 ,  A61B3/14 ,  A61B5/16 ,  A61B3/113 ,  A61B3/11 ,  A61B5/11 ,  A61B5/00

CPC classification number: A61B5/162 ,  A61B3/0008 ,  A61B3/0025 ,  A61B3/112 ,  A61B3/113 ,  A61B3/14 ,  A61B5/1103 ,  A61B5/1114 ,  A61B5/6803 ,  A61B2560/0242 ,  A61B2562/0204

Abstract: Systems and methods are provided to measure reaction times and/or responses for head, eye, eyelid movements, and/or changes in pupil geometry. The system includes eyewear or headwear including one or more eye-tracking cameras for monitoring the position and geometry of at least one eye and its components of the user, one or more scene cameras for monitoring the user's surroundings, and one or more processors to determine reaction times. Optionally, the system may include one or more of a multi-axis accelerometer to monitor head movements, light sources to trigger visual evoked responses, and/or electronic inputs that may be used to indicate the time of occurrence of external reference events. Measured reaction times and other measurements may be monitored for use in a range of applications. Responses and reaction times may be measured continuously over extended periods, even over a lifetime to measure consequences of the aging process.

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.