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This system is mainly
developed for those who lack
the use of their hands or voice.
Its users are adults and
children with cerebral palsy,
spinal cord injuries, brain
injuries, ALS, multiple
sclerosis, brainstem strokes.
As a user sits in front of
the Eyegaze monitor, a
specialized video camera
mounted below the
monitor observes one of
the user's eyes.
User look at screen
For pupil-center/corneal-
reflection method.
Infra red sensitive
Video camera
Capture image 60/s
Image processing software
Sophisticated image- processing
software
analyses video images
Movement detected
Through comparison eye
movement detected.
Pointer moves on screen
BASIC SYSTEM
CALIBERATE
TYPEWRITE
GAMING
READ TEXT
SYSTEM WITH OPTIONS
BE A KEYBOARD
CONTROL APPLIANCES
DIAL AND ANSWER A PHONE
CALL
SPEAK THROUGH SPEECH
SYNTHESIZER
The Phrase Program
Typewriter Program
The telephone program
Run Second PC
Paddle games & Score Four
Read Text Program
Television
•The Eyegaze System must be
operated in an environment
where there is limited of
infrared light.
•The System works best away
from windows, and in a room
lit with fluorescent or mercury-
vapor lights, which are low in
infrared.
• NYSTAGAMUS(involuntary movement of eye ball)
• ALTERNATING STRABISMUS(eyes cannot directed to same object)
EYE MOVEMENT PROBLEMS
• INADEQUATE VISUAL ACCUITY
• DIPLOPIA(double vision)
• BLURRED VISION
• CATRACTS(clouding of eye lens)
VISION PROBLEMS
•Neurosciences /Neuropsychology
•Vision Research
•Experimental Psychology
•Cognitive Psychology
•Psycholinguistics
•Psychiatry /Mental Health
•Transportation: Flight simulators /driving simulators
•Robotics - remote vision control
•Video and arcade games
Today, the human eye-gaze can be recorded by relatively
unremarkable techniques. This thesis argues that it is possible
to use the eye-gaze of a computer user in the interface to aid
the control of the application.
Care must be taken, though, that eye-gaze tracking data is
used in a sensible way, since the nature of human eye-
movements is a combination of several voluntary and
involuntary cognitive processes.