Abstract: Systems and methods are provided for a compact eye-tracking camera assembly. The camera incorporates a lens and image sensor whose principal axis is parallel to the plane of the display surface, and a compound angle mirror configured to redirect incident IR light along the principal axis. The compound angle mirror has a first angle of approximately 45 degrees relative to a first axis, and a second angle of approximately 15-22 degrees (e.g., 18 degrees) relative to a second axis that is orthogonal to the first axis. The first and second axes are substantially parallel to the plane of the display surface.

Abstract: An eye-tracking calibration system includes an infrared illumination source and a camera assembly configured to receive infrared light reflected from a user's face during activation of the infrared illumination source and to produce image data associated therewith. A processor communicatively coupled to the camera assembly and the illumination source is produces eye-tracking data based on the image data during real-time use of the system by the user. The processor senses the selection of a user interface element by the user during the real-time use, applies an animation to the selected user interface element, determines a gaze point of the user during the animation, and derives calibration data based on the determined gaze point.

Abstract: An eye-movement data acquisition system includes an illumination source configured to produce infrared light and a camera assembly configured to receive a portion of the infrared light reflected from a user's face during activation of the infrared illumination source. The camera assembly includes a rolling shutter sensor configured to produce individual scan line images associated with the user's eyes at a line sampling rate. A processor is communicatively coupled to the camera assembly and the illumination sources and is configured to produce eye-movement data based on the individual scan line images.

Abstract: Systems and methods are provided for a compact eye-tracking camera assembly. The camera incorporates a lens and image sensor whose principal axis is parallel to the plane of the display surface, and a compound angle mirror configured to redirect incident IR light along the principal axis. The compound angle mirror has a first angle of approximately 45 degrees relative to a first axis, and a second angle of approximately 15-22 degrees (e.g., 18 degrees) relative to a second axis that is orthogonal to the first axis. The first and second axes are substantially parallel to the plane of the display surface.

Abstract: A multi-mode eye-tracking system allows independent control of a set of illuminators while providing accurate calculations of both corneal reflections and pupil centers. One illumination mode includes alternating back and forth between a pair of illuminators during successive time segments, then activating both illuminators after a predetermined time interval. One eye-tracking mode includes alternating back and forth between a pair of illuminators during successive time segments, but selecting a single illuminator for activation during successive time segments in the event that a previous computation was unsatisfactory for a given illuminator. One illumination mode includes activating a single illuminator based on the lateral position of the gaze point on the display.

Abstract: Systems and methods for cloud-based eye tracking with reduced computing and network overhead are provided. Computational latency is reduced by isolating an eye region within a facial image and transmitting it to the remote server for further image processing. Transmission latency is reduced by identifying available servers on the network, assigning transmission latency values to each server based on various attributes, and proactively selecting the server having the lowest transmission latency.

Abstract: Systems and methods for cloud-based eye tracking with reduced computing and network overhead are provided. Computational latency is reduced by isolating an eye region within a facial image and transmitting it to the remote server for further image processing. Transmission latency is reduced by identifying available servers on the network, assigning transmission latency values to each server based on various attributes, and proactively selecting the server having the lowest transmission latency.

Abstract: A method of integrating an eye tracking assembly into a computer display comprises: providing a computer display having a bottom edge, a horizontal dimension H and a vertical dimension V; attaching a backplane to the display such that a first portion extends below the display, the first portion having a horizontal dimension H and a vertical dimension D; and adhering a transparent layer to the display such that a second portion extends below the display, the second portion having a horizontal dimension H and a vertical dimension D; and installing the tracking assembly at least partially inside an accessory region between the first and second portions.

Abstract: Systems and methods are provided for processing and storing eye-tracking data. A visual stimulus is provided to an experimental subject on a display. Eye-tracking data associated with the behavior of the experimental subject is acquired and stored while observing the visual stimulus on the display. The eye-tracking data is stored as primary data and secondary data, wherein the primary data is stored in an encrypted form using a secret key associated with the experimental subject. In response to a research request, the secondary data is transmitted for storage in a research database and, in response to a second research request authorized by the experimental subject, the primary data is transmitted for storage in the research database subsequent to decrypting the primary data using the secret key.

Abstract: An eye tracking system is provided for use in a head-mounted display of the type that includes a display screen viewable by a user through a first lens. The eye-tracking system includes at least one infrared LED configured to illuminate the user's eye and a first mirror positioned between the first lens and the display screen, wherein the first mirror has a convex face configured to substantially reflect infrared light received from the user's illuminated eye. The system includes an image sensor configured to receive infrared light reflected by the first mirror to thereby produce an image of the user's illuminated eye. An eye-tracking module communicatively coupled to the image sensor is configured to determine a gaze point on the display screen based on the image of the user's illuminated eye.