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: A method performed by a computer for generating a video comprising blink data of a user viewing a scene depicted as video data, where the blink data is overlayed on the video data. The method includes receiving sensor data. The sensor data includes at least the video data including at least one video frame, and gaze tracking data at least indicative of viewed positions within the scene depicted by at least one video frame of the video data. The method includes processing the sensor data to generate blink data indicative of blink motion of at least one eye of the user. The method includes generating a video overlay by rendering the blink data. generating an output video by mixing the video data and the video overlay.

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: The invention is related to a method and system for calibrating an eye tracking device configured to track a gaze point of a user on a display The method comprises: presenting a video on the display to a user, the video having a start size and a start position; tracking the gaze of the user, using an image sensor of the eye tracking device; and sequentially completing, for at least one calibration position, the steps of: resizing the video to a calibration size, wherein the calibration size is smaller than the start size, and translating the video to a calibration position; recording calibration data, using the eye tracking device, for the user viewing the video in the calibration position; and resizing the video to a second size that is greater than the start size.

Abstract: A method performed by a computer for generating a video comprising blink data of a user viewing a scene depicted as video data, where the blink data is overlayed on the video data. The method includes receiving sensor data. The sensor data includes at least the video data including at least one video frame, and gaze tracking data at least indicative of viewed positions within the scene depicted by at least one video frame of the video data. The method includes processing the sensor data to generate blink data indicative of blink motion of at least one eye of the user. The method includes generating a video overlay by rendering the blink data. generating an output video by mixing the video data and the video overlay.

Abstract: The invention is related to a method and system for calibrating an eye tracking device configured to track a gaze point of a user on a display The method comprises: presenting a video on the display to a user, the video having a start size and a start position; tracking the gaze of the user, using an image sensor of the eye tracking device; and sequentially completing, for at least one calibration position, the steps of: resizing the video to a calibration size, wherein the calibration size is smaller than the start size, and translating the video to a calibration position; recording calibration data, using the eye tracking device, for the user viewing the video in the calibration position; and resizing the video to a second size that is greater than the start size.

Abstract: An eyetracker obtains input signal components (SCR, SP) describing a respective position of each of at least one glint in a subject's eye and a position of a pupil of said eye. Based on the input signal components (SCR, SP), the eyetracker determines if a saccade is in progress, i.e. if the gaze point of the subject's eye moves rapidly from a first point (GP1) to a second point (GP2) where the gaze point is fixed. During the saccade, the eyetracker generates a tracking signal describing the gaze point of the eye based on a subset (SCR) of the input signal components, which subset (SCR) describes a cornea reference point for a subject's eye (E). After the saccade, however, the tracking signal is preferably again based on all the input signal components (SCR, SP).

Abstract: 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.

Abstract: 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.

Abstract: A method and apparatus for maintenance charging a battery is disclosed. A battery is fully charged using conventional CC-CV techniques and subsequently is maintenance charged by applying a first maintenance voltage to the battery for a first predetermined time period. If desired, a second maintenance voltage may be applied to the battery for a second predetermined time period. An apparatus for maintenance charging a battery utilizes a timer and a charge controller to apply a maintenance voltage to a battery for a predetermined time period.