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Yarbus eye tracker from the 1960s. In the 1800s, studies of eye movement were made using direct observations. For example, Louis Émile Javal observed in 1879 that reading does not involve a smooth sweeping of the eyes along the text, as previously assumed, but a series of short stops (called fixations) and quick saccades. [1]
A motion detector attached to an outdoor, automatic light. A motion detector is an electrical device that utilizes a sensor to detect nearby motion (motion detection).Such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area.
A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors . PIR sensors are commonly used in security alarms and automatic lighting applications.
An optical sensor converts light rays into electronic signals. It measures the physical quantity of light and then translates it into a form readable by an instrument. An optical sensor is generally part of a larger system that integrates a source of light, a measuring device, and the optical sensor. This is often connected to an electrical ...
The first Gorgon Stare system consisted of two sensor pods, one carrying electro-optical (EO) and infrared cameras (IR), the other digital processors and data-links that enabled quick transmission of actionable intelligence to operations centers and troops in the field. The system delivered three "tiers" of surveillance down to small details ...
Oculometer is a device that tracks eye movement. [1] [2] The oculometer computes eye movement by tracking corneal reflection relative to the center of the pupil. [3]An oculometer, which can provide continuous measurements in real time, can be a research tool to understand gaze as well as cognitive function.
The Eye Tribe [1] was a Danish startup company that produced eye tracking technology and was selling it to software developers for them to incorporate the eye tracking device into their applications and programs. The Eye Tribe's software allowed a user to direct a smart phone, tablet, or computer with just the look of an eye.
To measure eye movement, pairs of electrodes are typically placed either above and below the eye or to the left and right of the eye. If the eye moves from center position toward one of the two electrodes, this electrode "sees" the positive side of the retina and the opposite electrode "sees" the negative side of the retina.
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