EYE GAZE SYSTEM

EYE GAZE SYSTEM

INTRODUCTION:

Eyegaze is to run the system with eyes by looking, it control keys displayed on a screen, a person can synthesize speech, control his environment. The Eyegaze system is for communication and control system for people with complex physical disabilities. It is a potential porthole into current cognitive process and communication through the direction of eyes is faster than any other mode of human communication.

DEVELOPMENT:

The Eyegaze system is a direct – select vision controlled communication and control system. It was developed in Fairfax, Virginia by LC technologies Inc...  This system is developed for those who lack the use of their hands or voice. Its users are adults and children with cerebral palsy, spinal cord injuries, ALS, multiple scleroses, and werding – Hoffman syndrome.

WORKING:

Eyegaze system uses the pupil – center/corneal reflection method to determine where the user is looking on the screen. An infrared - sensitive video camera, mounted beneath the system’s monitor, takes 60 pictures per second of the user’s eye. A low power LED, mounted in the center of the camera’s lens illuminates the eye. The Led reflects a small bit off the surface of the eye’s cornea. The bright pupil effect enhances the camera’s image of the pupil and reflects off to the retina, the back surface of the eye, and causes the pupil to appear white... I.e. the coordinates of where, the user is looking on the screen based on the relative positions of the pupil center and cornel reflection within the video image of the eye.

FEATURES: 

The Eyegaze programs have many adjustable parameters.  The gaze duration, phrases, telephone message and appliance labels, for example, can all be easily changed. An assistant or caregiver may edit the Eyegaze text or change Eyegaze data values by running a configuration program. eye tracking is done using infrared light, the Eyegaze System should be used away from uncovered windows and other sources of bright outside light, in order to ensure the best accuracy.

SKILLS AND CALIBRATION:

Good control of one eye, ability to keep his head still in front of the camera, some reading or word recognition skill. Calibration done that a 15s calibration procedure is required to set up the systems for a particular user. To calibrate, the user fixes his gaze on a sequence of small circles that the system displays on the Eyegaze system.

USES:

Eyegaze systems are in the use around the world. Its uses are adults and children with cerebral palsy, spinal cord injuries, brain injuries, ALS, multiple sclerosis, brainstem stokes, muscular dystrophy, and werding – Hoffman syndrome. Eyegaze systems are being used in homes, offices, schools, and hospital and long term care facilities.

APPLICATION:

The Phrases program, along with the speech synthesizer, provides quick communications for non‑verbal users.  Looking at a key causes a preprogrammed message to be spoken. 

Typewriter program. The user types by looking at keys on visual keyboards. The user may "speak" or print what he has typed.

The Lights and Appliances program, which includes computer-controlled switching equipment, provides  Eye gaze control of lights and appliances anywhere in the home or office. 

The Telephone program allows the user to place and receive calls.  Frequently used numbers are stored in a telephone "book". Non‑verbal users may access the speech synthesizer to talk on the phone.

  The Read Text program allows the user to select text for display and "advance to the next page" with his eyes.

The Portable Eyegaze System can be mounted on a wheelchair and run from a 12-volt battery or wall outlet.  It weighs only 6 lbs

The Portable Eyegaze System comes with a flat screen monitor and tables mount for its monitor. 

The monitor can be lifted off the table mount and slipped into a wheelchair mount. 

Portable Eyegaze System Mounted on Wheelchair

THE POWER OF TECHNOLOGY!!!