公开(公告)号：US10984236B2

公开(公告)日：2021-04-20

申请号：US16015608

申请日：2018-06-22

Applicant: Mirametrix Inc.

Inventor： Simon St-Hilaire ,  Nicholas Joseph Sullivan

IPC: G06K9/00 ,  G06F3/01 ,  G06K9/20 ,  A61B3/113

Abstract: A system and an apparatus are provided, for gaze tracking within a defined operating range. The apparatus includes at least one optical system, which capable of capturing radiation in a wavelength range produced by a composite illumination source. The apparatus also includes at least one set of illumination sources creating the composite illumination source, wherein: at least one of the illumination sources is positioned relative to the optical system such that it ensures a user bright pupil response at the beginning of the apparatus operating range; and the composite illumination source size is such that it creates a Purkinje image on a user's eye capable of being distinguished by the optical system at the end of the apparatus operating range. The apparatus also includes an illumination controller for activating and deactivating the at least one composite illumination source, and a signal processing controller for transmitting generated images from the at least one optical system.

公开(公告)号：US10061383B1

公开(公告)日：2018-08-28

申请号：US15268129

申请日：2016-09-16

Applicant: Mirametrix Inc.

Inventor： Cosmin Vasile Ludusan

IPC: G06F3/01 ,  G06T7/00 ,  G06T3/40 ,  G06F3/14 ,  G06K9/00

CPC classification number: G06F3/013 ,  G06F1/1626 ,  G06F1/1686 ,  G06F3/0304 ,  G06K9/00604 ,  G06K9/0061 ,  G06K9/2018 ,  G06K9/52

Abstract: A method is provided for determining a point of gaze directed at a graphical display. The method comprises: a) acquiring an image of at least one eye of a user containing at least one gaze aspect and at least one reference aspect; b) extracting image aspects from the image, the image aspects comprising a set of reference aspects and a set of gaze aspects corresponding to the image; c) extracting a set of features for each of said image aspects; d) computing a set of feature vectors between said set of gaze aspects and said set of reference aspects; e) computing a point of gaze for each of said set of feature vectors, using a predefined mathematical relationship; and f) using a predefined rule to combine the computed points of gaze into a final point of gaze on the graphical display.

公开(公告)号：US09811158B2

公开(公告)日：2017-11-07

申请号：US14263636

申请日：2014-04-28

Applicant: Mirametrix Inc.

Inventor： Craig A. Hennessey ,  Jacob Fiset ,  Nicholas Sullivan

IPC: G09G5/00 ,  G06F3/01 ,  A61B3/113 ,  G01S3/78 ,  G06K9/00

CPC classification number: G06F3/013 ,  A61B3/113 ,  G01S3/7803 ,  G06K9/00604

Abstract: A system and method are provided for calibrating an eye gaze tracking system. The method comprises obtaining gaze data; obtaining at least one key point corresponding to a portion of media content being displayed; linking the gaze data to the at least one key point; and generating one or more calibration parameters by comparing gaze data with associated ones of the at least one key point.

公开(公告)号：US09070017B2

公开(公告)日：2015-06-30

申请号：US13891099

申请日：2013-05-09

Applicant: Mirametrix Inc.

Inventor： Craig A. Hennessey ,  Peter D. Lawrence

IPC: G06K9/00 ,  A61B3/113 ,  G06F3/01

CPC classification number: G06K9/00624 ,  A61B3/113 ,  G06F3/013 ,  G06K9/00604

Abstract: Methods for determining a point-of-gaze (POG) of a user in three dimensions are disclosed. In particular embodiments, the methods involve: presenting a three-dimensional scene to both eyes of the user; capturing image data including both eyes of the user; estimating first and second line-of-sight (LOS) vectors in a three-dimensional coordinate system for the user's first and second eyes based on the image data; and determining the POG in the three-dimensional coordinate system using the first and second LOS vectors.

Abstract translation: 公开了用于确定用户三维视点（POG）的方法。 在特定实施例中，所述方法包括：向用户的双眼呈现三维场景; 捕获包括用户双眼的图像数据; 基于图像数据估计用户的第一和第二眼睛的三维坐标系中的第一和第二视线（LOS）矢量; 以及使用第一和第二LOS矢量确定三维坐标系中的POG。

公开(公告)号：US20150160726A1

公开(公告)日：2015-06-11

申请号：US14626288

申请日：2015-02-19

Applicant: Mirametrix Inc.

Inventor： Nicholas J. SULLIVAN

IPC: G06F3/01

CPC classification number: G06F3/013 ,  A61B3/113 ,  G02B27/0093 ,  G06K9/00604 ,  H04N13/383

Abstract: A system and method are provided for performing eye gaze tracking. The system is configured for and the method comprises optimizing illumination of a scene for a single on-axis imaging apparatus, capturing an image using the single on-axis imaging apparatus under the optimized illumination, and processing the captured image to perform a gaze estimation. Dynamic illumination control, eye candidate detection and filtering, and gaze estimation techniques are also provided.

Abstract translation: 提供了一种执行眼睛注视跟踪的系统和方法。 该系统被配置为，并且该方法包括优化用于单个在轴成像装置的场景的照明，在优化照明下使用单个在轴成像装置拍摄图像，以及处理所捕获的图像以执行注视估计。 还提供了动态照明控制，眼睛候选者检测和滤波以及注视估计技术。