14 results about "Eye tracking system" patented technology

The present invention relates to a head mountable device (100) comprising an eye-tracking system (200), comprising a first detecting subsystem (210) configured to detect at least one first gaze parameter of a respective eye to be tracked when a user wears the head mountable device (100) so as to generate a first signal, wherein the first detecting subsystem (210) is of a low power monitoring type, and a second detecting subsystem (220) configured to detect at least one second gaze parameter of the respective eye so as to generate a second signal, the second detecting subsystem (220) comprises a plurality of detecting elements (221, 222), a processing and control unit (230) associated to the first detecting subsystem (210) and to the second detecting subsystem (220) configured to estimate a region of interest (400) among a predetermined plurality of regions of interest on the basis of said first signal, wherein the estimated region of interest (400) comprises the direction of the gaze of a respective eye to be tracked, the processing and control unit (230) is configured to selectively activate one or more of the detecting elements (221, 222) on the basis of the estimated region of interest (400) for subsequently estimating the direction of the gaze of the respective eye to be tracked inside the estimated region of interest (400) on the basis of said second signal with optimized hardware and computing energy consumption.

Visual vergence determination is disclosed. In one embodiment, an artificial reality system determines that a performance metric of an eye tracking system is below a first performance threshold. The eye tracking system is associated with a head-mounted display worn by a user. The artificial reality system receives a first input associated with a body of the user and, based on the received first input, determines an area that the user is looking at within a field of view of the head-mounted display. The system determines a visual vergence distance of the user based on at least the first input associated with the body of the user, the area that the user is looking at, and a location of one or more objects in a scene displayed by the head-mounted display. The system adjusts one or more configurations of the head-mounted display based on the determined visual vergence distance of the user.

The application discloses an eye tracking system, which comprises a first light source, a reflection module and an angle adjusting module. The reflection module is located on the propagation path of the first light beam and is used for reflecting the first light beam emitted by the first light source. The angle adjusting module comprises at least one adjusting unit, a carrier body comprises at least one contact unit, the adjusting unit is connected with the contact unit one by one, and the contact unit is driven to move so as to adjust the angle of the reflection surface, so that the reflection surface reflects the first light beam to a target illumination area. The eye tracking system provided by the embodiment of the application adjusts the angle of the reflection surface on the carrier body through the angle adjusting module, reflects the first light beam to the target illumination area, realizes tracking of the first light beam on the position of the eyes or the face of a user, and only needs to cover the position area of the eyes or the face of the user in the target illumination area, without the need of illuminating and covering the whole head box range, so that the utilization rate of the light source energy is improved.

A method for detecting an iris in a user eye image captured by a camera of an eye tracking system, the method comprising: processing the image to estimate a pupil position in a 3D coordinate system; estimating an approximate optical axis in the 3D coordinate system; estimating an iris center in the 3D coordinate system based on the pupil position in the 3D coordinate system; and estimating an iris contour in the 3D coordinate system as a circle with an estimated iris diameter centered at the iris center lying in a plane having a normal parallel to the approximate optical axis; and estimating an image iris contour by transforming the iris contour in the 3D coordinate system to an image coordinate system.

The present invention relates to a display device for displaying images for visually impaired users. The display device comprises a pixelated display, a processor, an eye-tracking system and a microlens array. The present invention also relates to a method for displaying images for visually impaired users on a display device. The present invention relates to a processor for operating a display device adapted to display images for visually impaired users, and to a computer program for implementing the method of the present invention.

The application discloses a multi-user eye movement tracking method and system, electronic equipment and storage medium, relates to the technical field of eye movement tracking, and the method comprises the steps of: presetting a reference calibration point and a dynamic reference point; in each image acquisition period, an image of the eyeball of a current user is acquired through a camera module; the infrared camera module is provided with a reference calibration mark and a dynamic reference mark; iris texture features and corneal reflection spot data are extracted based on the eyeball image; a user identity code is calculated, and a three-dimensional line of sight coordinate is generated in combination with a corneal curvature parameter and a pupil center displacement amount; when a multi-user coexistence state is detected, a user association matrix is established, and a user differentiation weight value is calculated to distinguish different users; line of sight focus position data is generated based on the three-dimensional line of sight coordinate, and the infrared light supplement intensity is adjusted according to the dynamic reference mark. The application solves the problem that in a multi-user scene, the eye movement tracking system is limited in tracking accuracy due to the lack of an effective user differentiation mechanism.

Systems and methods for identifying a change in visual fixation of an individual over time implement and / or include: collecting a data set collected indicative of an individual's visual fixation with respect to a visual stimulus as determined by an eye tracking device; extracting one or more eye tracking metrics from the data set; generating, via software executing on a processor, an indication of at least one of a diagnosis or subtype indication based on the one or more eye tracking metrics.

Systems, devices, apparatus, methods, and computer-readable storage media for developmental assessment using eye tracking are provided. In one aspect, a system for development assessment via eye tracking includes: a patient-side computing device having a screen for presenting visual stimuli to a patient, an eye-tracking device integrated with the patient-side computing device and configured to collect eye-tracking data of the patient while the visual stimuli are presented to the patient on the screen of the patient-side computing device, and an operator-side computing device configured to present a user interface for an operator to communicate with the patient-side computing device.

The present invention relates to an eye tracking system (100). The system includes at least one projection means (3) adapted to project a light beam (4) onto a predetermined area of ​​the cornea (2) of an eye (1). The system further includes at least one optical sensor (6) capable of detecting reflected light (5) from the eye (1) and identifying a detection position thereon. The reflected light (5) from the eye (1) includes at least one, preferably two, specular reflections, preferably at least a first Purkinje reflection (P1), and more preferably at least a first Purkinje reflection (P1) and a fourth Purkinje reflection (P4). The system (100) is adapted to calculate the lateral movement and / or angular movement, or change thereof, of the eye (1) based on the detection position and / or displacement of the detection position.

A method of determining a presence of a tear in an eye of a user of an eye tracking system, the method comprising receiving an image of the eye of the user, processing the image to identify one or more features of the image, comparing the one or more identified features to one or more expected features, and determining that a tear is present in the eye of the user if the one or more identified features differs from the one or more expected features by at least a threshold amount.

The application relates to the technical field of vision correction, in particular to a VR vision training instrument and a calibration method thereof, which is characterized in that the method comprises the following steps: acquiring vision data of a user; wearing a corresponding VR vision training instrument on the head to perform adaptability adjustment; playing corresponding animations or pictures through a display screen in the VR vision training instrument; slowly adjusting a focal length adjusting button to gradually adapt, after adjusting to each stage, stabilizing the focal length while changing the position of a target image, acquiring a motion track of a fixation point through feedback of an eye tracking system, and judging whether the motion track coincides with the display position of the target image; the application has the beneficial effect that the best effect of clear viewing can be adjusted according to the vision condition, through ghosting calibration, left and right lens adjustment is performed to adapt to the pupil distance of the two eyes, so that the fatigue and discomfort of the user are reduced, and more real and effective visual stimulation is provided to help the user better train and improve the vision.

System and method for estimating an on-screen gaze position through mobile eye tracking are disclosed. According to one aspect of the present invention, a computer program stored on a computer-readable medium is provided for performing a method for estimating an on-screen gaze position through mobile eye tracking, wherein the computer program causes a computer to perform the steps of: acquiring a first camera input image capturing a face of a user gazing at a screen of a mobile terminal on which content is being executed; generating a first eye-cropped image by cropping an eye region from the first camera input image; extracting a pupil from the first eye-cropped image and estimating a first relative position; and converting the first relative position into screen coordinates related to the screen using a screen coordinate reference value.

The present disclosure relates to an optical system comprising: a light guide (110) having opposing first (112) and second (114) non-parallel optical surfaces, wherein at least one of the first or second optical surfaces is curved; an in-coupling diffractive optical element (120) arranged to receive reflected light from an object and to couple the reflected light into the light guide at a first location, wherein the reflected light propagates along the light guide and exits the light guide at a second location; and a light detector (140) arranged proximate the second location to receive the reflected light from the light guide. A head-mounted eye-tracking system or a world-facing camera system can comprise the optical system.

This application provides an eye tracker, eye tracking system, method, storage medium, and program product, relating to the field of gaze tracking technology. The eye tracker includes a beam splitter assembly and at least one infrared light source and an infrared camera arranged coaxially. The beam splitter assembly is used to adjust the optical path of the infrared light emitted by each of the at least one infrared light source, generating coaxial infrared light propagating directly in front of the human eye's visual axis and incident on the human eye. Simultaneously, it reflects the coaxial infrared light reflected back from the human eye to the infrared camera. The infrared camera is used to acquire images of the human eye. This application, by arranging at least one infrared light source and an infrared camera coaxially and combining them with the beam splitter assembly, enables infrared light to enter the human eye coaxially in front of the human eye's visual axis, and reflects the coaxial infrared light reflected from the human eye back to the infrared camera along the original optical path, achieving pupil imaging and effectively improving the tracking accuracy of eye movement angles and the overall reliability of eye tracking.