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Computer vision tracking, also known as eye tracking, uses cameras and software to monitor eye movements for a variety of purposes, including computer interaction and communication for people with disabilities. Early research used photographic film, while modern devices often use infrared light and digital cameras. Data obtained from vision tracking can be used for market research and detecting distractions, and can even replace a computer mouse. It is also useful for people with disabilities to control devices and communicate using only eye movements.
Computer vision tracking is a type of technology used to monitor eye movements in order to control an interface. This application is also called eye tracking and it relies on sophisticated cameras and software to work. Vision tracking is useful for a wide variety of purposes, ranging from standard computer interaction to easy communication for people with disabilities.
Basic vision tracking research was conducted as early as the 1900s. During this time period, scientists used photographic film to record light reflected from the eyes. By studying the film, the researchers obtained clues about the patterns and movements that occurred when a person looked at an object.
Modern computer vision monitoring devices work in a similar way. Instead of capturing reflections of visible light on film, however, today’s eye tracking tools often project infrared light onto the pupil. Digital cameras are used to detect the reflection of these infrared rays and the resulting movements are interpreted by a computer. Some sophisticated vision monitoring applications don’t need the infrared light source, but instead use software to isolate the round pupils of the eye.
The information obtained from computer vision monitoring can be very useful for the development of improved displays and presentations. For example, market research firms can use eye movement data to determine where a viewer looks at an advertisement and their reactions to an image. Vision tracking data can also be useful for detecting instances where a person is distracted. This information may be important for skills that require attention, such as driving.
A common application of computer vision monitoring is to select specific options on a monitor. Software that observes and tracks the user’s eye movements can be used to replace a standard computer mouse. Instead of physically moving their hand, a user can simply look at an area on the computer screen to make a selection. This allows your hands to remain free and can be especially invaluable for intensive tasks such as piloting and navigating an aircraft.
The hands-free nature of computer vision monitoring can make it useful for people with disabilities as well. Using special computer monitors and eye tracking cameras, paralyzed individuals are able to control devices and interact with others. Eye tracking programs designed for the disabled often present a list of commands or phrases and allow the user to form sentences using only eye movements.
