Silmänseurannalla

Silmänseurannalla, also known as eye tracking, is a technology that enables a computer to know where a person's eyes are looking. It works by using specialized equipment to record the position of the eye, the direction of the gaze, and the movement of the eye. This data can then be used for a variety of purposes, including research, accessibility, and user interface design.

The basic principle behind eye tracking involves a camera that monitors the eye and an infrared light source. The infrared light illuminates the pupil and the cornea of the eye. The camera then captures images of the eye, and software analyzes these images to determine the corneal reflection and the pupil center. The difference between these two points allows the system to calculate the direction of gaze. There are various types of eye trackers, including remote eye trackers that are mounted on a screen, and head-mounted eye trackers that are worn by the user.

Eye tracking has numerous applications. In research, it is used to study visual attention, cognitive processes, and human-computer interaction. For accessibility, it allows individuals with severe motor impairments to control computers and communicate by simply looking at the screen. This can involve selecting letters, words, or commands based on where the user is looking. In marketing and user experience design, eye tracking can reveal how users interact with websites, advertisements, and products, providing insights into what captures their attention and what might be overlooked. The technology continues to evolve, offering greater accuracy, portability, and more diverse applications.