-
131.发明申请公开(公告)号：US20210011551A1
公开(公告)日：2021-01-14
申请号：US16914261
申请日：2020-06-26
申请人： Tobii AB
发明人： Richard Andersson
摘要： An eyetracker obtains a digital image representing at least one eye of a subject. The eyetracker then searches for pupil candidates in the digital image according to a search algorithm and, based on the searching, determines a position for the at least one eye in the digital image. The eyetracker also obtains light-intensity information expressing an estimated amount of light energy exposing the at least one eye when registering the digital image. In response to the light-intensity information, the eye-tracker determines a range of pupil sizes. The search algorithm applies the range of pupil sizes in such a manner that a detected pupil candidate must have size within the range of pupil sizes to be accepted by the search algorithm as a valid pupil of the subject.
-
公开(公告)号：US20210011549A1
公开(公告)日：2021-01-14
申请号：US16834485
申请日：2020-03-30
申请人： Tobii AB
发明人： Mark Ryan , Jonas Sjöstrand , Erik Lindén , Pravin Rana
摘要： A method of updating a cornea model for a cornea of an eye is disclosed, as well as a corresponding system and storage medium. The method comprises controlling a display to display a stimulus at a first depth, wherein the display is capable of displaying objects at different depths, receiving first sensor data obtained by an eye tracking sensor while the stimulus is displayed at the first depth by the display, controlling the display to display a stimulus at a second depth, wherein the second depth is different than the first depth, receiving second sensor data obtained by the eye tracking sensor while the stimulus is displayed at the second depth by the display, and updating the cornea model based on the first sensor data and the second sensor data.
-
公开(公告)号：US20210004623A1
公开(公告)日：2021-01-07
申请号：US16901809
申请日：2020-06-15
申请人： Tobii AB
摘要： There is provided a method, system, and non-transitory computer-readable storage medium for controlling an eye tracking system to optimize eye tracking performance under different lighting conditions, by obtaining a first image captured using a camera associated with the eye tracking system, the first image comprising at least part of an iris and at least part of a pupil of an eye illuminated by an illuminator associated with the eye tracking system at a current power of illumination selected from a set of predetermined power levels; determining a contrast value between an the iris and the pupil in the image; and, if the contrast value deviates less than a preset deviation threshold value from a preset minimum contrast value, setting the current power of illumination of the illuminator to the other predetermined power level in the set of predetermined power levels.
-
公开(公告)号：US10809800B2
公开(公告)日：2020-10-20
申请号：US16220760
申请日：2018-12-14
申请人： Tobii AB
发明人： Andreas Klingström , Per Fogelström
摘要： A method and a corresponding eye tracking system for providing an approximate gaze convergence distance of a user in an eye tracking system are disclosed. The method comprises determining calibration data in relation to interpupillary distance between a pupil of a left eye and a pupil of a right eye of a user, determining, based on the determined calibration data, a gaze convergence function providing an approximate gaze convergence distance of the user based on a determined interpupillary distance of the user. The method further comprises receiving, from one or more imaging devices, one or more images of the left eye and the right eye of the user, determining a current interpupillary distance of the user based on the one or more images and determining a current approximate gaze convergence distance based on the current interpupillary distance and the gaze convergence function.
-
公开(公告)号：US20200285379A1
公开(公告)日：2020-09-10
申请号：US16522011
申请日：2019-07-25
申请人： Tobii AB
发明人： Erland George-Svahn
IPC分类号： G06F3/0488 , G06F3/01 , G06F1/16 , G06F3/0354 , G02B27/01 , G06F3/16
摘要： A method and system for assisting a user when interacting with a graphical user interface combines gaze based input with gesture based user commands. A user of a computer system without a traditional touch-screen can interact with graphical user interfaces in a touch-screen like manner using a combination of gaze based input and gesture based user commands. A solution for touch-screen like interaction uses gaze input and gesture based input as a complement or an alternative to touch-screen interactions with a computer device having a touch-screen. Combined gaze and gesture based interaction with graphical user interfaces can be used to achieve a touchscreen like environment in computer systems without a traditional touchscreen or in computer systems having a touchscreen arranged ergonomically unfavorable for the user or a touchscreen arranged such that it is more comfortable for the user to use gesture and gaze for the interaction than the touchscreen.
-
公开(公告)号：US20200278746A1
公开(公告)日：2020-09-03
申请号：US16781178
申请日：2020-02-04
申请人： Tobii AB
发明人： Fredrik Lindh
摘要： Method for determining a current gaze direction of a user in relation to a three-dimensional (“3D”) scene, which 3D scene is sampled by a rendering function to produce a two-dimensional (“2D”) projection image of the 3D scene, which sampling is performed based on a virtual camera in turn being associated with a camera position and camera direction in the 3D scene, wherein the method comprises the steps: determining, by a gaze direction detection means, a first gaze direction of the user at a first gaze time point, which first gaze direction is related to said 3D scene; determining a virtual camera 3D transformation, which 3D transformation represents a change of a virtual camera position and/or virtual camera direction between the first gaze time point and a second sampling time point, where the second sampling time point is later than the first gaze time point; and determining the said current gaze direction as a modified gaze direction, in turn calculated based on the first gaze direction, and further calculated based on an inverse of said time-dependent virtual camera 3D transformation. The invention also relates to a system and to a computer software function.
-
公开(公告)号：US10739851B2
公开(公告)日：2020-08-11
申请号：US16097588
申请日：2016-12-30
申请人： Tobii AB
发明人： Richard Hainzl , Jonas Andersson
IPC分类号： G06F3/01 , G02B27/01 , G02B27/00 , G06F3/0481 , G06F3/03 , G06F3/0485 , G02B27/09
摘要： A device (1300) adapted to be worn by a user is disclosed, comprising an optical element, a light source and a sensor. The optical element is adapted to be arranged in front of an eye (1312) of the user and formed of a light-transmitting material allowing the user to see through the optical element, wherein the light source is arranged on the optical element and adapted to illuminate at least a part of the eye of the user. Further, the sensor is adapted to capture light which has been emitted from the light source and reflected on the eye. A system for is also disclosed, comprising such a device and a processor adapted to determine a gaze direction of the user based on the light captured by the sensor.
-
138.发明授权公开(公告)号：US10705600B2
公开(公告)日：2020-07-07
申请号：US14804524
申请日：2015-07-21
申请人： TOBII AB
发明人： Marten Skogo
摘要： An eye-tracking system comprises an illuminator that directs infrared light towards a detection region, a camera configured to generate an image of the detection region and a controller configured to detect a calibration target in the image and to detect or determine changes in the position and/or orientation of the camera relative to the calibration target. The eye-tracking system can be installed in a vehicle.
-
公开(公告)号：US10686972B2
公开(公告)日：2020-06-16
申请号：US15941624
申请日：2018-03-30
申请人： Tobii AB
发明人： Denny Rönngren
IPC分类号： G09G5/00 , H04N5/225 , G06F3/01 , G06T7/73 , H04R1/32 , G02B27/01 , H04R1/10 , H04N5/262 , G06F3/03 , G06F1/16 , G02B27/00 , A61B3/113
摘要： A method for rotating a field of view represented by a displayed image is disclosed. The method may include displaying a first image representing a first field of view. The method may also include determining a gaze direction of a user toward the first image. The method may further include identifying a subject in the first image at which the gaze direction is directed, wherein the subject is in a first direction from a center of the first image. The method may further include receiving a directional input in a second direction. The method may additionally include, based at least in part on the second direction being substantially the same as the first direction, displaying a second image representing a second field of view, wherein the subject is centered in the second image.
-
公开(公告)号：US10678897B2
公开(公告)日：2020-06-09
申请号：US15395502
申请日：2016-12-30
申请人： Tobii AB
发明人： Mårten Skogö , Richard Hainzl , Henrik Jönsson , Anders Vennström , Erland George-Svahn , John Elvesjö , Mattias Gustavsson
IPC分类号： G06K9/00 , G06F21/32 , G06F3/01 , G06F9/4401 , G06F21/31
摘要： According to the invention a system for authenticating a user of a device is disclosed. The system may include a first image sensor, a determination unit, and an authentication unit. The first image sensor may be for capturing at least one image of at least part of a user. The determination unit may be for determining information relating to the user's eye based at least in part on at least one image captured by the first image sensor. The authentication unit may be for authenticating the user using the information relating to the user's eye.
-
-
-
-
-
-
-
-
-
搜索结果
476 条记录 (耗时 0.034 秒)
