373 results about "Eye tracking on the ISS" patented technology

The invention is a system and method for determining visual attention, and supports the eye tracking measurements with other physiological signal measurements like emotions. The system and method of the invention is capable of registering stimulus related emotions from eye-tracking data. An eye tracking device of the system and other sensors collect eye properties and / or other physiological properties which allows a subject's emotional and visual attention to be observed and analyzed in relation to stimuli.

A head mounted display device has a mount which attaches the device to a user's head, a beam-splitter attached to the mount with movement devices, an image projector which projects images onto the beam-splitter, an eye-tracker which tracks a user's eye's gaze, and one or more processors. The device uses the eye tracker and movement devices, along with an optional head-tracker, to move the beam-splitter about the center of the eye's rotation, keeping the beam-splitter in the eye's direct line-of-sight. The user simultaneously views the image and the environment behind the image. A second beam-splitter, eye-tracker, and projector can be used on the user's other eye to create a stereoptic, virtual environment. The display can correspond to the resolving power of the human eye. The invention presets a high-resolution image wherever the user looks.

A gaze direction determining system and method is provided. A two-camera system may detect the face from a fixed, wide-angle camera, estimates a rough location for the eye region using an eye detector based on topographic features, and directs another active pan-tilt-zoom camera to focus in on this eye region. A eye gaze estimation approach employs point-of-regard (PoG) tracking on a large viewing screen. To allow for greater head pose freedom, a calibration approach is provided to find the 3D eyeball location, eyeball radius, and fovea position. Both the iris center and iris contour points are mapped to the eyeball sphere (creating a 3D iris disk) to get the optical axis; then the fovea rotated accordingly and the final, visual axis gaze direction computed.

In a preferred embodiment, an apparatus for eye tracking, including: an illuminator; reflection apparatus to reflect illumination from the illuminator onto a surface of a windshield of a vehicle in which the windshield is installed, such that the illumination is reflected onto at least an eye of a person in the vehicle, and to reflect an image of the at least an eye, and a sensor to receive a reflection of the image of the at least an eye reflected by the reflection apparatus and to produce an output signal representative thereof.

Systems and methods include receiving an image for presenting on a display screen of a head mounted display (HMD). The image is provided by an application. The received image is pre-distorted to enable optics provided in a HMD to render the image. An alignment offset is identified for an eye of a user wearing the HMD by determining a position of the eye relative to an optical axis of at least one lens of the optics of the HMD. The pre-distorted image provided by the application is adjusted to define a corrected pre-distorted image that accounts for the alignment offset. The corrected pre-distorted image is forwarded to the display screen of the HMD for rendering, such that the image presented through the optics of the HMD removes aberrations caused by the alignment offset.

A computer based eye-tracking solution is disclosed. A computer apparatus is associated with one or more graphical displays (GUI components) that may be manipulated based on user-generated commands. An event engine is adapted to receive an eye-tracking data signal that describes a user's point of regard on the display. Based on the signal, the event engine is adapted to produce a set of non-cursor controlling event output signals, which influence the GUI-components. Each non-cursor controlling event output signal describes a particular aspect of the user's ocular activity in respect of the display. Initially, the proposed event engine receives a control signal request from each of the GUI-components. The control signal request defines a sub-set of the set of non-cursor controlling event output signals which is required by the particular GUI-component. The event engine delivers non-cursor controlling event output signals to the GUI-components in accordance with each respective control signal request.

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.

Methods for assessing cognitive and linguistic abilities by tracking and recording the eye movements of a patient in response to predetermined verbal and visual stimuli. The methods incorporate conventional eye-tracking technology to acquire eye-fixation location and duration measures for testing linguistic comprehension, working memory, attention allocation, and the effect of semantic associative priming. Visual stimuli presented in the methods are carefully designed to reduce visually distracting features. Verbal stimuli are carefully designed to control for numerous linguistic features.

An improved prosthesis and method for stimulating vision nerves to obtain a vision sensation that is useful for the patient that has lost vision due to AMD, RP, and other diseases. The invention utilizes infrared light to cause action potentials in the retinal nerves similar to those which result from rods and cones stimulated by visible light in healthy retinas. In some embodiments, the invention provides a prosthesis that generates a stimulation pattern of infrared light from an external stimulator array through the eye and focusing the stimulation pattern of infrared light on the retina, especially the fovea. Some embodiments the invention provides improved resolution down to a group of nerves, or even the individual nerve level, with sufficient energy density so as to cause a desired action potential.

A system analyzes neuro-response measurements from subjects exposed to video games to identify neurologically salient locations for inclusion of stimulus material and personalized stimulus material such as video streams, advertisements, messages, product offers, purchase offers, etc. Examples of neuro-response measurements include Electroencephalography (EEG), optical imaging, and functional Magnetic Resonance Imaging (fMRI), eye tracking, and facial emotion encoding measurements.

The invention relates to automatic eye tracking, wherein at least one imaging device (150) registers sequential image data (DEYE) representing at least one eye (181; 182) of a subject (180). A processing unit (170) receives the image data (DEYE), and based thereon, produces a position estimate of the at least one eye (181; 182). The processing unit (170) also produces a control signal (DILL)>which is received by at least one light source (140). The at least one light source (140), in turn, emits at least one light beam (L) being variable, such that a spatial location of an illumination area (AILL) towards which at least one light beam (L) is directed depends on the characteristics of the control signal (CILL). Specifically, the processing unit (170) produces the control signal (CILL) so that the illumination area (AILL) includes a position estimate of the at least one eye (181; 182).

A three-dimensional (3D) acquisition and visualization system for personal electronic devices comprises two digital cameras which function in a variety of ways. The two digital cameras acquire 3D data which is then displayed on an auto-stereoscopic display. For clarity and ease of use, the two digital cameras also function as eye-tracking devices helping to project the proper image at the correct angle to the user. The two digital cameras also function to aid in autofocusing at the correct depth. Each personal electronic device is also able to store, transmit and display the acquired 3D data.

Systems and methods that enable a reduction of the power consumption involved in measuring a user's affective response to content. The reduction in power consumption is achieved by utilizing eye tracking to determine when a user is paying attention to content, and accordingly setting a mode of operation of a device that measures the user. Thus, by using different modes of operation, which are characterized by different energy consumption rates, the total power consumption of the device may be reduced, without loss of relevant measurements.

For directing voice input based on eye tracking, a method is disclosed that includes receiving, by use of a processor, an audio signal, the audio signal comprising voice input, selecting a location from the group consisting of a computing device and an application being displayed on a screen of the computing device, the location being detected where a user's eyes are directed, and directing the voice input to the selected location.

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.

A graphics system comprising a rendering engine, a sample buffer and a filtering engine. The rendering engine receives graphics primitives, generates sample positions, computes a depth value and color values for each sample position interior to each primitive. The blur value is assigned to each sample based on its depth value relative to an estimate of the concentration depth of the viewer. The per-sample data are stored in the sample buffer. The filtering engine reads samples in a neighborhood of a current filter position, and filters the samples to generate a video output pixel which is transmitted to a display device. The filtering engine applies to each sample in the neighborhood a corresponding filter function. The filter function has a spatial cutoff frequency determined by the sample's blur value.

A head mountable display (HMD) system comprises an eye position detector comprising one or more cameras configured to detect the position of each of the HMD user's eyes; a dominant eye detector configured to detect a dominant eye of the HMD user; and an image generator configured to generate images for display by the HMD in dependence upon the HMD user's eye positions, the image generator being configured to apply a greater weight to the detected position of the dominant eye than to the detected position of the non-dominant eye.

Method, system and apparatus for calibrating an eye tracker comprising presenting a subject with a visual target. Detemiining a physical arrangement in space of the subject. Obtaining an eye measurement of the subject. Storing a record of the subject's physical arrangement in space and data derived from the eye measurement of the subject, associated with the visual target presented to the subject. Repeating for one or more further different visual targets.

A portable eye tracker device is disclosed which includes a frame, at least one optics holding member, a movement sensor, and a control unit. The frame may be a frame adapted for wearing by a user. The at least one optics holding member may include at least one illuminator configured to selectively illuminate at least a portion of at least one eye of the user, and at least one image sensor configured to capture image data representing images of at least a portion of at least one eye of the user. The movement sensor may be configured to detect movement of the frame. The control unit may be configured to control the at least one illuminator for the selective illumination of at least a portion of at least one eye of the user, receive the image data from the image sensors, and receive information from the movement sensor.

A portable eye tracker device is disclosed which includes a frame, at least one optics holding member, and a control unit. The frame may be adapted for wearing by a user and include an eyeglass frame having a nose bridge. The at least one optics holding member may include at least one illuminator configured to selectively illuminate at least a portion of at least one eye of the user and at least one image sensor configured to capture image data representing images of at least a portion of at least one eye of the user. The optics holding member may be coupled with the nose bridge. The control unit may be configured to control the at least one illuminator for the selective illumination of at least a portion of at least one eye of the user, and receive the image data from the at least one image sensor.

A portable eye tracker device is disclosed which includes a frame, at least one optics holding member, and a control unit. The frame may be adapted for wearing by a user. The at least one optics holding member may include at least one illuminator configured to selectively illuminate at least a portion of at least one eye of the user, and at least one image sensor configured to capture image data representing images of at least a portion of at least one eye of the user. The control unit may be configured to control the at least one illuminator for the selective illumination of at least a portion of at least one eye of the user, and receive the image data from the at least one image sensor.

In preferred embodiments, apparatus for and method of eye tracking, including, in sequence, the steps of: viewing an entire face of a person to obtain predetermined facial features of the person to identify or not the said person; if the person is identified, retrieving a previously stored ocular profile of the person based on said predetermined facial features; using said ocular profile to track movement of an eye of said person. If the person is not identified, an ocular profile is created.

The invention discloses a method and a device for operating a browser based on eye-movement tracking. The method comprises the steps of shooting a facial image of a user through a camera at every set time and describing the facial image to a Canvas, describing eyeball images to the Canvas after the eyeball images are extracted from the facial image, and acquiring the pixel data of the eyeball images from the Canvas; acquiring the eyeball data shot every time according to the pixel data and a set eyeball catching algorithm, and determining the user to be focused on a special content in a browser page when the difference valve of every adjacent two-time eyeball positions is less than a preset threshold valve and the retention time of eyeballs is more than the set time of the eyeballs; if the semi-diameters of pupils are detected to be amplified, looking for corresponding focal coordinates of the pupils in a webpage, and determining dom element label objects corresponding to the focal coordinates; and executing corresponding browsing operation according to relative relations between the preset dom element label subjects and performed actions. The execution of the browsing relative operation can be realized based on the eyeball movement by using the method.

This invention relates to an eye-tracking driving system, especially to an eye-tracking system controlled by the user's eye. It not only utilizes the unique eye-controlled method, but also avoids contacting with the user's eyes or skin. It is suitable for the disabled persons or the elderly so that they can drive a powered vehicle easily. The system mainly includes a display device, an eye-tracking device, a calculating device, a controller and a powered vehicle. This system can effectively capture the image around the user's eye and then precisely determine the pupil center. Based on the position of the pupil center, the power vehicle can be controlled.

The invention discloses an eye movement tracking method and device, and belongs to the technical field of man-machine interaction. The method includes the steps of obtaining at least two frames of images; obtaining eye areas in the at least two frames of the images; positions of eye iris centers are determined in the eye areas of the at least two frames of the images respectively; positions of reference points are determined in the eye areas of the at least two frames of the images respectively; the reference points refer to points keeping static relative to the eye areas; eye movement tracking is carried out on the eye iris centers according to the positions of the eye iris centers and the positions of the reference points; the problem that an intrusion type eye movement tracking technology always needs extra hardware to assist in obtaining change situations of eye watching direction is solved; the eye movement tracking method and device achieve the effect of carrying out eye movement tracking by obtaining the images without the need of the extra hardware for assisting.

A virtual camera pose determiner is configured to determine a position and an orientation of a virtual camera. The position of the virtual camera is determined on the basis of a display position of a displayed representation of a remote participant on a display. The orientation of the virtual camera is determined on the basis of a geometrical relation between the display position of the remote participant on the display, and a position of a local participant. The virtual camera is configured to transmit an image or a sequence of images to the remote participant, so that an image provided by the virtual camera has the view on the local participant as is if viewed from the display position. Further embodiments provide a video communication system having a virtual camera pose determiner for providing a virtual camera pose on basis of the display position and the position of the local participant.

A method of filtering glints by processing an image of a user's cornea to obtain coordinates of desired glints from a configuration of light sources, comprising processing an image, in a first image space, of a user's cornea to determine coordinates of respective multiple positions of glints; and iteratively: selecting from the coordinates a first and a second set of coordinates; computing from the first set of coordinates a transformation that transforms the first set of coordinates into first coordinates of a predetermined spatial configuration; and testing whether the transformation transforms also the second set into positions that match second positions of the predetermined configuration. The coordinates of the desired glints are selected as those first and second sets which are transformed into coordinates that match the first and second coordinates of the predetermined configuration. The method is based on a geometrical homography and is expedient for robust gaze estimation in connection with e.g. eye tracking.

A gaze direction determining system and method is provided. A two-camera system may detect the face from a fixed, wide-angle camera, estimates a rough location for the eye region using an eye detector based on topographic features, and directs another active pan-tilt-zoom camera to focus in on this eye region. A eye gaze estimation approach employs point-of-regard (PoG) tracking on a large viewing screen. To allow for greater head pose freedom, a calibration approach is provided to find the 3D eyeball location, eyeball radius, and fovea position. Both the iris center and iris contour points are mapped to the eyeball sphere (creating a 3D iris disk) to get the optical axis; then the fovea rotated accordingly and the final, visual axis gaze direction computed.