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公开(公告)号：US08220926B2
公开(公告)日：2012-07-17
申请号：US12750967
申请日：2010-03-31
申请人： Peter Blixt , Anders Hoglund , Bengt Rehnstrom , John Elvesjö
发明人： Peter Blixt , Anders Hoglund , Bengt Rehnstrom , John Elvesjö
摘要： A visual display characterized by hidden reference illuminators is adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input for gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. A system and method for determining a gaze point of an eye watching a visual display comprising reference illuminators are further provided. The determination of the gaze point may be based on an ellipsoidal cornea model.
摘要翻译： 特征在于隐藏参考照明器的视觉显示器适于发射不可见的光，以在观看显示器的屏幕表面的眼睛上产生角膜巩膜反射。 跟踪这种反射和瞳孔中心为注视跟踪提供输入。 还提供了一种用于装备的方法和具有参考照明器的LCD。 还提供了一种用于确定观看包括参考照明器的视觉显示器的眼睛的凝视点的系统和方法。 注视点的确定可以基于椭圆形角膜模型。
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公开(公告)号：US08562136B2
公开(公告)日：2013-10-22
申请号：US13465245
申请日：2012-05-07
申请人： Peter Blixt , Anders Hoglund , Bengt Rehnstrom , John Elvesjö
发明人： Peter Blixt , Anders Hoglund , Bengt Rehnstrom , John Elvesjö
摘要： A visual display characterized by hidden reference illuminators is adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input for gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. A system and method for determining a gaze point of an eye watching a visual display comprising reference illuminators are further provided. The determination of the gaze point may be based on an ellipsoidal cornea model.
摘要翻译： 特征在于隐藏参考照明器的视觉显示器适于发射不可见的光，以在观看显示器的屏幕表面的眼睛上产生角膜巩膜反射。 跟踪这种反射和瞳孔中心为注视跟踪提供输入。 还提供了一种用于装备的方法和具有参考照明器的LCD。 还提供了一种用于确定观看包括参考照明器的视觉显示器的眼睛的凝视点的系统和方法。 注视点的确定可以基于椭圆形角膜模型。
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公开(公告)号：US20120327101A1
公开(公告)日：2012-12-27
申请号：US13465245
申请日：2012-05-07
申请人： Peter Blixt , Anders Hoglund , John Elvesjö
发明人： Peter Blixt , Anders Hoglund , John Elvesjö
摘要： A visual display characterized by hidden reference illuminators is adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input for gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. A system and method for determining a gaze point of an eye watching a visual display comprising reference illuminators are further provided. The determination of the gaze point may be based on an ellipsoidal cornea model.
摘要翻译： 特征在于隐藏参考照明器的视觉显示器适于发射不可见的光，以在观看显示器的屏幕表面的眼睛上产生角膜巩膜反射。 跟踪这种反射和瞳孔中心为注视跟踪提供输入。 还提供了一种用于装备的方法和具有参考照明器的LCD。 还提供了一种用于确定观看包括参考照明器的视觉显示器的眼睛的凝视点的系统和方法。 注视点的确定可以基于椭圆形角膜模型。
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公开(公告)号：US08339446B2
公开(公告)日：2012-12-25
申请号：US12752258
申请日：2010-04-01
申请人： Peter Blixt , Anders Hoglund , Gunnar Troili , John Elvesjö , Mårten Skogö
发明人： Peter Blixt , Anders Hoglund , Gunnar Troili , John Elvesjö , Mårten Skogö
CPC分类号： G06K9/00604 , A61B3/0008 , A61B3/0025 , A61B3/113 , A61B3/14 , A61B3/145
摘要： An eye tracker includes at least one illuminator for illuminating an eye, at least two cameras for imaging the eye, and a controller. The configuration of the reference illuminator(s) and cameras is such that, at least one camera is coaxial with a reference illuminator and at least one camera is non-coaxial with a reference illuminator. The controller is adapted to select one of the cameras to be active to maximize an image quality metric and avoid obscuring objects. The eye tracker is operable in a dual-camera mode to improve accuracy. A method and computer-program product for selecting a combination of an active reference illuminator from a number of reference illuminators, and an active camera from a plurality of cameras are provided.
摘要翻译： 眼睛跟踪器包括用于照射眼睛的至少一个照明器，用于使眼睛成像的至少两个照相机和控制器。 参考照明器和相机的配置使得至少一个相机与参考照明器同轴并且至少一个相机与参考照明器不同轴。 控制器适于选择要激活的摄像机之一以使图像质量度量最大化并避免遮挡对象。 眼睛跟踪器可在双摄像机模式下操作以提高精度。 提供了一种用于从多个参考照明器选择主动参考照明器的组合的方法和计算机程序产品，以及来自多个照相机的主动照相机。
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公开(公告)号：US08342687B2
公开(公告)日：2013-01-01
申请号：US12893128
申请日：2010-09-29
申请人： Peter Blixt , Miroslav Kobetski , Anders Hoglund
发明人： Peter Blixt , Miroslav Kobetski , Anders Hoglund
CPC分类号： G02B27/0093 , A61B3/113 , G03B15/16 , G06K9/00604
摘要： Provided is a method of determining a gaze point of an eye watching a visual display controllable by a display signal. The method comprises generating a display signal using a graphics card in order for the visual display to produce a screen pattern; receiving a signal encoding an image of the eye including a corneo-scleral reflection of the screen pattern; and determining, based on in part the geometry of said reflection, a gaze point of the eye, wherein said determining a gaze point includes utilizing the graphics card as a parallel processor.The image of the eye may be received directly at the graphics card. The graphics card may extract image features in the eye images. Reference illuminators may be used, and the screen pattern may be interlaced with a distinctive reference pattern.Further provided are a gaze-tracking system and a personal computer system adapted to determine a gaze point of a viewer.
摘要翻译： 提供了一种确定眼睛观察视觉显示可视显示的目视点的方法。 该方法包括使用图形卡生成显示信号，以使视觉显示产生屏幕图形; 接收编码眼睛图像的信号，包括屏幕图案的角膜巩膜反射; 以及基于所述反射的几何形状确定所述眼睛的凝视点，其中所述确定凝视点包括利用所述图形卡作为并行处理器。 眼睛的图像可以直接在图形卡处接收。 图形卡可以提取眼睛图像中的图像特征。 可以使用参考照明器，并且屏幕图案可以与独特的参考图案隔行扫描。 进一步提供了一种注视跟踪系统和适于确定观看者的凝视点的个人计算机系统。
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公开(公告)号：US08976110B2
公开(公告)日：2015-03-10
申请号：US13283224
申请日：2011-10-27
申请人： Henrik Eskilsson , Mårten Skogö , John Elvesjö , Peter Blixt
发明人： Henrik Eskilsson , Mårten Skogö , John Elvesjö , Peter Blixt
IPC分类号： G09G5/00
CPC分类号： H04N5/23241 , G02B27/0172 , G02B2027/0138 , G06F3/013 , G06K9/00597 , G09G2330/021 , G09G2354/00 , H04N5/23245
摘要： A personal computer system includes a visual display, an imaging device adapted to provide eye-tracking data by imaging the face of a viewer of the visual display, and an input device for accepting eye-tracking control data and other input data. The imaging device is switchable between at least an active mode, a ready mode and an idle mode, and the switching time from the idle mode to the active mode is longer than the switching time from the ready mode to the active mode. The eye-tracking data provided in the ready mode may include eye position but not eye orientation. The system may include a dedicated input device for forcing the imaging device into active mode by directly triggering an interrupt; alternatively, the dedicated input device forces it permanently into idle mode.
摘要翻译： 个人计算机系统包括视觉显示器，适于通过对视觉显示器的观看者的脸进行成像来提供眼睛跟踪数据的成像装置，以及用于接受眼睛跟踪控制数据和其他输入数据的输入装置。 成像装置可以在至少活动模式，就绪模式和空闲模式之间切换，并且从空闲模式到活动模式的切换时间长于从就绪模式到活动模式的切换时间。 在就绪模式中提供的眼睛跟踪数据可以包括眼睛位置，但不包括眼睛定位。 该系统可以包括用于通过直接触发中断来迫使成像装置进入活动模式的专用输入装置; 或者，专用输入设备强制其永久地进入空闲模式。
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公开(公告)号：US08610768B2
公开(公告)日：2013-12-17
申请号：US12833575
申请日：2010-07-09
申请人： Johnny Holmberg , Peter Blixt , John Elvesjö
发明人： Johnny Holmberg , Peter Blixt , John Elvesjö
IPC分类号： H04N7/18
CPC分类号： G06F3/013 , A61B3/113 , G06K9/00604
摘要： The invention generally relates to systems and methods for eye detection for use in, for example, installations and systems for tracking eyes and gaze angle/directions. The system includes a plurality of eye detection units connected to an image sensor. The eye detection units are adapted to receive regions of picture elements of a digital image frame substantially in parallel and wherein the eye detection units are adapted to operate substantially in parallel, each eye detection unit being adapted to receive a specified region of the picture elements of at least one digital image frame and including an eye feature extraction module adapted to perform a eye feature extraction process on the received picture elements to identify predetermined eye features. An eye data generating module is adapted to receive information of potential identified eye features including picture element coordinates for the identified eye features, and the received region of picture elements, and generate eye data based on the information of potential eye features, wherein the eye data is generated if identified eye features fulfill predetermined conditions, and transfer generated eye data and the received regions of picture elements to a processing module, and wherein a data flow of the eye data and the region of picture elements of a digital image frame is substantially parallel.
摘要翻译： 本发明一般涉及用于例如用于跟踪眼睛和注视角度/方向的装置和系统中的用于眼睛检测的系统和方法。 该系统包括连接到图像传感器的多个眼睛检测单元。 眼睛检测单元适于基本并行地接收数字图像帧的图像元素的区域，并且其中眼睛检测单元适于基本并行地操作，每个眼睛检测单元适于接收图像元素的指定区域 至少一个数字图像帧，并且包括适于对所接收的图像元素执行眼睛特征提取处理以识别预定的眼睛特征的眼睛特征提取模块。 眼数据生成模块适于接收包括识别的眼睛特征的图像元素坐标和图像元素的接收区域的潜在识别的眼睛特征的信息，并且基于潜在的眼睛特征的信息生成眼睛数据，其中眼睛数据 如果识别出的眼睛特征满足预定条件，则生成眼图数据和图像的接收区域到处理模块，并且其中数据图像帧的眼睛数据和像素区域的数据流基本上是平行的 。
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公开(公告)号：US20110013007A1
公开(公告)日：2011-01-20
申请号：US12833575
申请日：2010-07-09
申请人： JOHNNY HOLMBERG , Peter Blixt , John Elvesjö
发明人： JOHNNY HOLMBERG , Peter Blixt , John Elvesjö
IPC分类号： H04N7/18
CPC分类号： G06F3/013 , A61B3/113 , G06K9/00604
摘要： The invention generally relates to systems and methods for eye detection for use in, for example, installations and systems for tracking eyes and gaze angle/directions. The system includes a plurality of eye detection units connected to an image sensor. The eye detection units are adapted to receive regions of picture elements of a digital image frame substantially in parallel and wherein the eye detection units are adapted to operate substantially in parallel, each eye detection unit being adapted to receive a specified region of the picture elements of at least one digital image frame and including an eye feature extraction module adapted to perform a eye feature extraction process on the received picture elements to identify predetermined eye features. An eye data generating module is adapted to receive information of potential identified eye features including picture element coordinates for the identified eye features, and the received region of picture elements, and generate eye data based on the information of potential eye features, wherein the eye data is generated if identified eye features fulfil predetermined conditions, and transfer generated eye data and the received regions of picture elements to a processing module, and wherein a data flow of the eye data and the region of picture elements of a digital image frame is substantially parallel.
摘要翻译： 本发明一般涉及用于例如用于跟踪眼睛和注视角度/方向的装置和系统中的用于眼睛检测的系统和方法。 该系统包括连接到图像传感器的多个眼睛检测单元。 眼睛检测单元适于基本并行地接收数字图像帧的图像元素的区域，并且其中眼睛检测单元适于基本并行地操作，每个眼睛检测单元适于接收图像元素的指定区域 至少一个数字图像帧，并且包括适于对所接收的图像元素执行眼睛特征提取处理以识别预定的眼睛特征的眼睛特征提取模块。 眼数据生成模块适于接收包括识别的眼睛特征的图像元素坐标和图像元素的接收区域的潜在识别的眼睛特征的信息，并且基于潜在的眼睛特征的信息生成眼睛数据，其中眼睛数据 如果识别出的眼睛特征满足预定条件，则生成眼图数据和图像的接收区域到处理模块，并且其中数据图像帧的眼睛数据和像素区域的数据流基本上是平行的 。
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公开(公告)号：US20110279666A1
公开(公告)日：2011-11-17
申请号：US13145636
申请日：2009-01-26
申请人： Johan Strömbom , Simon Gustafsson , Marten Skogo , John Mikael Holtz Elvesjö , Per Nystedt , Peter Blixt
发明人： Johan Strömbom , Simon Gustafsson , Marten Skogo , John Mikael Holtz Elvesjö , Per Nystedt , Peter Blixt
IPC分类号： H04N7/18
CPC分类号： G06K9/00604 , A61B3/113 , G06F19/00 , H04N7/18
摘要： A gaze-point detection system includes at least one infrared (IR) signal source to be placed in a test scene as a reference point, a pair of eye glasses to be worn by a person, and a data processing and storage unit for calculating a gaze point of the person wearing the pair of eye glasses. The pair of eye glasses includes an image sensor, an eye-tracking unit and a camera. The image sensor detects IR signals from the at least one IR signal source and generates an IR signal source tracking signal. The eye-tracking unit determines adapted to determine the gaze direction of the person and generates an eye-tracking signal, and the camera acquires a test scene picture. The data processing and storage unit communicates with the pair of eye glasses and calculates the gaze point relative to the test scene picture.
摘要翻译： 注视点检测系统包括要放置在作为参考点的测试场景中的至少一个红外（IR）信号源，要由人佩戴的一副眼镜，以及用于计算一个 戴着眼镜的人的目光点。 一对眼镜包括图像传感器，眼睛跟踪单元和照相机。 图像传感器检测来自至少一个IR信号源的IR信号，并产生IR信号源跟踪信号。 眼睛跟踪单元确定适于确定人的凝视方向并产生眼睛跟踪信号，并且相机获取测试场景图像。 数据处理和存储单元与一对眼镜通信，并相对于测试场景图像计算凝视点。
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公开(公告)号：US09495589B2
公开(公告)日：2016-11-15
申请号：US13145636
申请日：2009-01-26
申请人： Johan Strombom , Marten Skogo , Per Nystedt , Simon Gustafsson , John Mikael Holtz Elvesjö , Peter Blixt
发明人： Johan Strombom , Marten Skogo , Per Nystedt , Simon Gustafsson , John Mikael Holtz Elvesjö , Peter Blixt
CPC分类号： G06K9/00604 , A61B3/113 , G06F19/00 , H04N7/18
摘要： A gaze-point detection system includes at least one infrared (IR) signal source to be placed in a test scene as a reference point, a pair of eye glasses to be worn by a person, and a data processing and storage unit for calculating a gaze point of the person wearing the pair of eye glasses. The pair of eye glasses includes an image sensor, an eye-tracking unit and a camera. The image sensor detects IR signals from the at least one IR signal source and generates an IR signal source tracking signal. The eye-tracking unit determines adapted to determine the gaze direction of the person and generates an eye-tracking signal, and the camera acquires a test scene picture. The data processing and storage unit communicates with the pair of eye glasses and calculates the gaze point relative to the test scene picture.
摘要翻译： 注视点检测系统包括要放置在作为参考点的测试场景中的至少一个红外（IR）信号源，要由人佩戴的一副眼镜，以及用于计算一个 戴着眼镜的人的目光点。 一对眼镜包括图像传感器，眼睛跟踪单元和照相机。 图像传感器检测来自至少一个IR信号源的IR信号，并产生IR信号源跟踪信号。 眼睛跟踪单元确定适于确定人的凝视方向并产生眼睛跟踪信号，并且相机获取测试场景图像。 数据处理和存储单元与一对眼镜通信，并相对于测试场景图像计算凝视点。
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