Eye Gaze System

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  • Topic: Eye, Computer, Human–computer interaction
  • Pages : 15 (3645 words )
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  • Published : March 10, 2013
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ABSTRACT

The field of human computer interaction has been undergoing a new renaissance lately. While many companies have, and continue to spend millions to develop highly visually appealing GUIs and state-of-art interaction systems for the common users since the inception of desktops, the development of interactive systems for the disabled has taken a kick start relatively recently. And the Eye gaze systems are one of the most pivotal inventions in this context. The Eye gaze System is a communication and control system for people with complex physical disabilities. You run the system with your eyes. By looking at control keys displayed on a screen, a person can synthesize speech, control his environment (lights, appliances, etc.), type, operate a telephone, run computer software, operate a computer mouse, and access the Internet and e-mail. Eye gaze Systems are being used to write books, attend school and enhance the quality of life of people with disabilities all over the world.

1. INTRODUCTION

The Eyegaze System is a communication and control system for people with complex physical disabilities. You run the system with your eyes. By looking at control keys displayed on a screen, a person can synthesize speech, control his environment (lights, appliances, etc.), type, operate a telephone, run computer software, operate a computer mouse, and access the Internet and e-mail. Eyegaze Systems are being used to write books, attend school and enhance the quality of life of people with disabilities all over the world.

Imagine yourself being a intelligent, motivated, and working person in the fiercely competitive market of information technology, but just one problem You can't use your hands. Or you can't speak. How do you do your job? How do you stay employed? You can, because of a very good gift from computer Industry : The Eyegaze, a communication & control system you run with your eyes.

The Eyegaze System is a direct-select vision-controlled communication and control system. It was developed in Fairfax, Virginia, by LC Technologies, Inc., [pic]
Figure: Block Diagram of Eyegaze System

2. WHO’S USING THE EYE GAZE SYSTEM?

This system is mainly developed for those who lack the use of their hands or voice. Only requirements to operate the Eye gaze are control of at least one eye with good vision & ability to keep head fairly still. Eye gaze Systems are in use around the world. Its users are adults and children with cerebral palsy, spinal cord injuries, brain injuries, ALS, multiple sclerosis, brainstem strokes, muscular dystrophy, and Werdnig-Hoffman syndrome. Eye gaze Systems are being used in homes, offices, schools, hospitals, and long-term care facilities. By looking at control keys displayed on a screen, a person can synthesize speech, control his environment (lights, appliances, etc.), type, operate a telephone, run computer software, operate a computer mouse, and access the Internet and e-mail. Eye gaze Systems are being used to write books, attend school and enhance the quality of life of people with disabilities all over the world.

2.1The skills needed by the user:

1. Good control of one eye:

The user must be able to look up, down, left and right. He must be able to fix his gaze on all areas of a 15-inch screen that is about 24 inches in front of his face. He must be able to focus on one spot for at least 1/2 second.

➢ Several common eye movement problems may interfere with Eye gaze use. These include:

Nystagmus  (constant, involuntary movement of the eyeball): The user may not be able to fix his gaze long enough to make eye gaze Selections

Alternating strabismus (eyes cannot be directed to the same object, either one deviates):
The Eyegaze System is constantly tracking the same single eye. If, for example, a user with alternating strabismus is operating the Eyegaze System with the right eye, and that eye...
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