Abstract: A system and method to calibrate a gaze point on a screen of an eye as the eye watches an object move on the screen. A movement of an eye may be tracked in a series of images, and a pattern of the movement of the eye may be detected. Detection of a pattern of eye movements that is associated with watching the moving object on a screen may be an indication that the eye was watching the object at the time that the pattern of eye movements was detected. The identified gaze point may be part of a calibration for purpose of gaze tracking. The detected pattern may be included in an indication that the viewer looked at the moving object.

Abstract: A method of determining a point or object on a digital display that is being gazed at by a viewer by capturing an image of the viewer's iris and at least one other feature of the viewer's face, calculating an imaginary line from the object being viewed, to the iris and continuing to an imaginary center of the viewer's eye, then calculating a position of the center of the eye relative to the other feature of the viewer's face. Upon a change in the position of the eye and the iris, a calculation can be made of a position of the iris in a second image. An imaginary line can be extended out from the center of the eye, through the new position of the iris onto the digital display to determine the point of gaze of the viewer.

Abstract: Embodiments of the invention may include a method of scrolling content on an electronic display upon detection that a gaze of a user is pointed to a pre-defined area of the display, such as for example an edge of the display. A scroll may be triggered by the gaze point of the user being directed to the pre-defined area of the screen or on a plane of the screen. A scroll may move the displayed content by a fixed amount or by a distance that is sufficient to bring the gaze point of the user our of the pre-defined area that triggered the scroll. A scroll may continue for example so long as a smooth pursuit of the viewers eyes is maintained. Embodiments may include tracking a position of a viewer of an electronic display, and altering an orientation of a one or more elements of the display to correspond to the changed orientation of the user. A layout of content that is display may be altered to accommodate the change in orientation.

Abstract: A method may track a motion of a body part in a series of images captured by an imager that is associated with an electronic device, and detect in such motion a gesture of the body part that matches a pre-defined gesture. Upon such detection of the gesture, a function that is associated with the gesture is activated but only upon a contact or other input, such as a push of a button by a user. The combination of the ‘push to enable’ and the ‘gesture to activate the function’ may provide comfortable operation of the gesture activation of a function. A system and method of altering a zoom of an image displayed on an electronic device by detecting in a series of images a change in distance between the device and a viewer of the image, and zooming the image to correspond to such change in position. The captured images and detected change in distance may be interpreted by a processor as a zoom gesture that may trigger a zoom of the displayed image.

Abstract: A system and method of tracking a viewer's focus and attention by displaying an object on a screen and instructing the user to look at such object. A camera captures an image of an eye of the user as he looks at the object, and then captures one or more further images of the eye of the user to determine when or if the user looked away from the object. A duration of time during which the user looked at the object may be used as a measure of focus or attention of the user.

Abstract: A method for optimizing the position and size of a search window in a tracking system is disclosed. According to some embodiments of the present invention, the method may comprise: calculating a velocity of a tracked object based on comparison of at least two previously captured consecutive frames; calculating an expected position of the tracked object in a subsequent frame based on calculated velocity of the tracked object; determine possible positions of the tracked object in the subsequent frame, based on the last known position of the tracked object, status of the tracked object, the expected position and the acceleration of the tracked object; and optimizing the size and position of the search window within the subsequent frame so that the search window covers the expected position and at least one of the possible positions of said tracked object.

Abstract: An eye tracking method includes: in a frame of a series of acquired frames, estimating an expected size and expected location of an image of an iris of an eye within that frame; and determining a location of the iris image within that frame by identifying a region within the expected location, the size of the region being consistent with the expected size, pixels of that region being darker than pixels of other such regions within that frame.

Abstract: A method of determining a point or object on a digital display that is being gazed at by a viewer by capturing an image of the viewer's iris and at least one other feature of the viewer's face, calculating an imaginary line from the objet being viewed, to the iris and continuing to an imaginary center of the viewer's eye, then calculating a position of the center of the eye relative to the other feature of the viewer's face. Upon a change in the position of the eye and the iris, a calculation can be made of a position of the iris in a second image. An imaginary line can be extended out from the center of the eye, through the new position of the iris onto the digital display to determine the point of gaze of the viewer.

Abstract: A system for content provision based on gaze analysis may include a display screen to display a initial content item and a processor to perform gaze analysis on acquired image data of an eye of a viewer viewing the screen to extract a gaze pattern of the viewer with respect to one or a plurality of initial content items, and to cause a presentation of one or a plurality of supplementary content items to the viewer, based on one or a plurality of rules applied on the extracted gaze pattern.

Abstract: A system and method of tracking a viewer's focus and attention by displaying an object on a screen and instructing the user to look at such object. A camera captures an image of an eye of the user as he looks at the object, and then captures one or more further images of the eye of the user to determine when or if the user looked away from the object. A duration of time during which the user looked at the object may be used as a measure of focus or attention of the user.

Abstract: A method of determining a point or object on a digital display that is being gazed at by a viewer by capturing an image of the viewer's iris and at least one other feature of the viewer's face, calculating an imaginary line from the objet being viewed, to the iris and continuing to an imaginary center of the viewer's eye, then calculating a position of the center of the eye relative to the other feature of the viewer's face. Upon a change in the position of the eye and the iris, a calculation can be made of the position of the center of eye relative to the other feature, and a position of the iris in a second image. An imaginary line can be extended out from the center of the eye, through the new position of the iris on onto the to the digital display to determine the point of gaze of the viewer.

Abstract: A method and system for detecting patterns of eye movements in a series of captured images may include capturing a series of images of at least one eye of a viewer by a camera, where the series of images may comprise at least two images, calculating, by a processor, a vector of a movement of the at least one eye between the at least two images, where the vector may include a distance of the movement, a direction of the movement and a time between capturing of the images, comparing the vector to at least one characteristic of a plurality of known patterns of eye movements, and classifying the movement of the eye(s) as one of a plurality of known pattern of eye movements.

Abstract: A system and method for use of a mobile device to capture one or more images of one or more eyes of a user in a period before, during or after conducting one or more tests involving the eyes, vision or eye movements of the user. A position, motion, pattern or other characteristic of the position, motion or movement of one or more eyes may be evaluated in each of such images and comparisons of such positions, motions or movements in the various images may be made as part of a diagnostic effort for various medical conditions.

Abstract: A system and method to calibrate a gaze point on a screen of an eye as the eye watches an object move on the screen. A movement of an eye may be tracked in a series of images, and a pattern of the movement of the eye may be detected. Detection of a pattern of eye movements that is associated with watching the moving object on a screen may be an indication that the eye was watching the object at the time that the pattern of eye movements was detected. The identified gaze point may be part of a calibration for purpose of gaze tracking. The detected pattern may be included in an indication that the viewer looked at the moving object.

Abstract: A system and method for using a mobile device to capture an image of eyes of a person and calculate a location or coordinates of one or each of the irises in a first frame and a location or coordinate of the same iris in a later frame. A vector may be calculated between the location or coordinate of a first iris in a first frame and a location or coordinate of the first iris in a second frame. A second eye vector may be calculated between the location or coordinate of a second iris in a first frame and such second iris in a second frame. An angle between the first iris vector and the second iris vector may be calculated. Such angle may be used as an indication of a physiological problem.

Abstract: A method for altering a position of an object in an image on a display screen in response to a position of a viewer of such screen. For example, an image of a person that is displayed on a screen may be altered to face or be directed towards a viewer of the screen that is detected by for example a sensor, so that the image of the person on the screen appears to look at the viewer who is looking at the screen.

Abstract: A system for content provision based on gaze analysis may include a display screen to display a initial content item and a processor to perform gaze analysis on acquired image data of an eye of a viewer viewing the screen to extract a gaze pattern of the viewer with respect to one or a plurality of initial content items, and to cause a presentation of one or a plurality of supplementary content items to the viewer, based on one or a plurality of rules applied on the extracted gaze pattern.

Abstract: A method may track a motion of a body part in a series of images captured by an imager that is associated with an electronic device, and detect in such motion a gesture of the body part that matches a pre-defined gesture. Upon such detection of the gesture, a function that is associated with the gesture is activated but only upon a contact or other input, such as a push of a button by a user. The combination of the ‘push to enable’ and the ‘gesture to activate the function’ may provide comfortable operation of the gesture activation of a function. A system and method of altering a zoom of an image displayed on an electronic device by detecting in a series of images a change in distance between the device and a viewer of the image, and zooming the image to correspond to such change in position. The captured images and detected change in distance may be interpreted by a processor as a zoom gesture that may trigger a zoom of the displayed image.

Abstract: Embodiments of the invention may include a method of scrolling content on an electronic display upon detection that a gaze of a user is pointed to a pre-defined area of the display, such as for example an edge of the display. A scroll may be triggered by the gaze point of the user being directed to the pre-defined area of the screen or on a plane of the screen. A scroll may move the displayed content by a fixed amount or by a distance that is sufficient to bring the gaze point of the user our of the pre-defined area that triggered the scroll. A scroll may continue for example so long as a smooth pursuit of the viewers eyes is maintained. Embodiments may include tracking a position of a viewer of an electronic display, and altering an orientation of a one or more elements of the display to correspond to the changed orientation of the user. A layout of content that is display may be altered to accommodate the change in orientation.

Abstract: An eye tracking method includes: in a frame of a series of acquired frames, estimating an expected size and expected location of an image of an iris of an eye within that frame; and determining a location of the iris image within that frame by identifying a region within the expected location, the size of the region being consistent with the expected size, pixels of that region being darker than pixels of other such regions within that frame.