Abstract: A method for an eye tracking system comprising at least one camera configured to provide a heatmap based on an observation of at least one user and comprising the steps of: defining a region to be analysed; receiving an input in the form of a stimulus whereby the stimulus is positioned within the region; determining a first gaze metric comprising gaze point data and gaze duration data, determined in relation to the region comprising the stimulus and over time; determining a second metric related, comprising data different from the first gaze metric, determined in relation to the region comprising the stimulus and over a duration of time; dividing the region into a plurality of sections; processing data related to gaze metrics by allocating values to the sections, so that a heatmap can be generated based on these allocated values and the sections; and mapping the processed data on a heatmap.

Abstract: There is provided a method for producing an optical system, whereby molds and coatings becomes embedded in the lens forming fluid, allowing the lens forming fluid to solidify.

Abstract: The disclosure relates to a method of estimating a three-dimensional position of at least one target object performed by a computer, the method comprising obtaining a first image, detecting at least one target object, generating a set of images depicting subsets of a captured scene, and estimating a three-dimensional position of at least one target object using a probability distribution (P) indicative of a likelihood that the at least one target object is in a particular position (x, y, z) in the scene.

Abstract: Method for determining calibration information in relation to a digital camera used to depict a user in a system for determining a user gaze point in relation to an entity, the method comprising: receiving from the camera at least one image of a user; performing digital image processing on the image to determine an in-image feature size dimension of a feature of the entity as reflected in an eye of the user; and to determine an in-image limbus size dimension of a limbus of the eye; determining a current distance between the eye and the entity based on said in-image size dimensions, a curvature of the eye cornea, a physical limbus size and a physical feature size; and determining said calibration information in the form of a focal length and/or a field of view of the camera based on said current distance and said physical limbus size dimension.

Abstract: An eye tracking system receives a blink signal that represents whether or not a blink has been detected in a current image. The eye tracking system receives a quality indicator that represents a quality of data in the current image. The eye tracking system sets a validated blink signal to a validated blink value if (1) the blink signal indicates that a blink has been detected; and (2) the quality indicator is less than a validated blink threshold.

Abstract: A pair of eye tracking glasses comprising unitary components, which each include: a lens region, through which an eye of a user can look when they are wearing the glasses; and a carrier region, which is at the periphery of the first lens region. Unitary components comprise the following embedded therein: a camera; a plurality of illuminators; and electrical conductors. The glasses further comprise: a first arm that is mechanically connected to the first carrier region of the first unitary component; a second arm that is mechanically connected to the second carrier region of the second unitary component; and a control module. The control module is configured to: receive signalling from the camera of each of the unitary components via the embedded electrical conductors; and provide signalling to the plurality of illuminators of each of the unitary components via the embedded electrical conductors.

Abstract: The invention is related to an eye tracking system for determining reference gaze data of a user in a scene exposing a pupil of the user.

Abstract: A method of controlling exposure time is disclosed comprising receiving an image of an eye from an image sensor, the image resulting from the image sensor detecting light during a first exposure time. A pupil intensity is determined as an intensity of a representation of a pupil of the eye in the image and an iris intensity is determined as an intensity of a representation of an iris of the eye in the image. Furthermore, a pupil-iris contrast is determined as a contrast between the representation of the pupil in the image and the representation of the iris in the image. On a condition that the pupil intensity is determined to meet an intensity condition, an intensity compensated exposure time is determined which is different from the first exposure time, and on a condition that the pupil-iris contrast is determined to meet a contrast condition, a contrast compensated exposure time is determined which is different from the first exposure time.

Abstract: A method of operating an eye tracking system to present a portion of displayable content to a user on a display screen. The displayable content covers a range of relative angles. The method comprises: receiving a head-pose-signal; receiving a gaze-signal; using the head-pose-signal to determine a sub-range of the relative angles of the displayable content; causing the display screen to present a portion of the displayable content to the user based on the determined sub-range of relative angles; and upon detecting that the gaze-signal represents a trigger location on the display screen: calculating a glance-induced offset based on the position of the trigger location; applying the glance-induced offset to the determined sub-range of relative angles to calculate an offsetted-sub-range of relative angles; and causing the display screen to present a portion of the displayable content to the user based on the calculated offsetted-sub-range of relative angles.

Abstract: The invention is related a method and a remote eye tracking system for determining a position of at least one eye of a subject.

Abstract: An eye tracking system comprising a processor configured to: receive a plurality of images of an eye from a camera, each image comprising an illuminated sub-region of a cornea of the eye, the illuminated sub-region comprising: a first corneal reflection of a first light source from a surface of the illuminated sub-region; and a second corneal reflection of a second light source from the surface of the illuminated sub-region; for each image, determine a three-dimensional, 3D, position of the first corneal reflection and a 3D position of the second corneal reflection based on a position of the camera, a position of the first light source, a position of the second light source, positions of the first and second corneal reflections in the image and a corneal surface model for the illuminated sub region; and output a topographical profile of the cornea based on the 3D positions determined for each image.

Abstract: An eye tracking system is provided that detects the presence of problematic blobs in an image captured by the system and removes these problematic blobs by switching off illuminators. Problematic blobs may be those obscuring the pupil of the eye of the user. Each blob is detected in a first image by the use of at least one first criterion, and then an illuminator is switched off. After the illuminator is switched off, at least one second criterion is used to identify blobs in a subsequent image. This process may be repeated until the illuminator causing the problematic blob is identified.

Abstract: Method for determining a current gaze direction of a user in relation to a three-dimensional (“3D”) scene, the 3D scene being sampled by a rendering function to produce at least one projection image of the 3D scene, wherein the method comprises the steps: determining, by a reprojection means, a reprojection transformation to be applied to the projection image before being displayed so as to be visible to the user at a gaze time point; determining, by a gaze direction detection means, a physical gaze direction of the user at said gaze time point; and determining a modified gaze direction of the user at said gaze time point, the modified gaze direction being determined in relation to the 3D scene based on both the physical gaze direction and the reprojection transformation. The disclosure also relates to a system and to a computer software function.

Abstract: The present invention relates to a system and a method for determining an entrance pupil position of an eye of a user of an eye tracking system. The entrance pupil position is determined using a predetermined entrance pupil displacement model, which at least models the angular dependence of the refractive properties of a cornea of the eye.

Abstract: A controller configured to: receive first and second curve data respectively defining first and second curves respectively representative of first and second eyelid edges in an eye image; determine an eye-openness-indicator-line extending from a first intersection point on the first curve to a second intersection point on the second curve by performing an optimisation routine comprising: defining an objective function representative of: an orthogonality of the eye-openness-indicator-line to a first tangent to the first curve at the first intersection point; and an orthogonality of the eye openness indicator line to a second tangent to the second curve at the second intersection point; and adjusting a value of the first intersection point and a value of the second intersection point until at least one termination condition for a value of the objective function is satisfied; and provide an eye openness value based on a length of the eye-openness-indicator-line.

Abstract: The invention is related to an assembly for an eye-tracking system, the assembly comprising a substantially ring-shaped carrier, a seat in the carrier, a plurality of light emitting devices disposed on a substrate, wherein the substrate is positioned against the seat, an alignment window comprising an opening extending through the carrier, an imaging device provided within and supported by the alignment window, wherein the imaging device is facing inwardly, and wherein the carrier is configured to guide light emitted from the plurality of light emitting devices towards an eye of a user when the assembly is used with the eye tracking system. The invention also relates to a corresponding head-mounted device utilizing the assembly.

Abstract: A method at a first participant's client conferencing system in a videoconference comprises receiving, from a second client conferencing system, at least one first video frame of a first video signal including an image of the second participant looking at a third participant, and first metadata associated with the first video frame and including an identity of the third participant. The image of the second participant is modified in the first video frame so that the first video frame is displayed on a first area of the client conferencing system with the second participant looking at a second area of the first display configured for displaying a second video signal of the third participant identified by the first metadata.

Abstract: An eye tracking device for tracking an eye is described. The eye tracking device comprises: a first diffractive optical element, DOE, arranged in front of the eye, an image module, wherein the image module is configured to capture an image of the eye via the first DOE. The first DOE is adapted to direct a first portion of incident light reflected from the eye, towards the image module. The eye tracking device is characterized in that the first DOE is configured to provide a lens effect.

Abstract: A computer-implemented method for guiding a user in calibrating a wearable eye tracking device is disclosed. The method comprises determining a calibration point and an initial gaze point of a user wearing the eye tracking device. The method further comprises displaying a calibration marker on a remote display device at the initial gaze point, wherein the calibration marker is configured to indicate a direction. The method further comprises, in response to a movement of the gaze point in relation to the calibration point caused by movement of the user's head and/or movement of the remote display device, determining a current gaze point, and updating the calibration marker in accordance with a calculated direction and/or the distance from the current gaze point to the calibration point.

Abstract: Techniques for using a deep generative model to generate synthetic data sets that can be used to boost the performance of a discriminative model are described. In an example, an autoencoding generative adversarial network (AEGAN) is trained to generate the synthetic data sets. The AEGAN includes an autoencoding network and a generative adversarial network (GAN) that share a generator. The generator learns how to the generate synthetic data sets based on a data distribution from a latent space. Upon training the AEGAN, the generator generates the synthetic data sets. In turn, the synthetic data sets are used to train a predictive model, such as a convolutional neural network for gaze prediction.