EYE-GAZE COMMUNICATION
(Eye gaze human computer interface)
Presented By:
Namitha.P.T
Introduction
•The Eye gaze System is a
communication
and
control
system for people with complex
physical disabilities.
•The Eye gaze System is a directselect
vision
controlled
communication
and
control
system.
•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, multiple sclerosis, brainstem strokes
• Good control of one eye
• Adequate vision
•Ability to maintain a position in front
of the Eye gaze monitor
•Mental abilities
Software & hardware requirements
Software Programs
.Main Menu
.Games
.Read Text
.Teach
.Settings Program
Hardware
.Desktop computer with OS
.CD and floppy drives
.15" LCD Flat Panel Monitor
.Adjustable monitor tray with camera bracket
.High-speed infrared sensitive camera and lens
Working Of The Eye Gaze System
How does it work
• The eye gaze system uses the pupil_ central corneal
reflection method
• Video camera mounted below the monitor ,it takes
60 pictures per seconds
• Infra-red
•Reflected from eye
•Sensor records where the reflected light is moving
•computer calculate the persons gaze point
The Basic Eye Gaze Can
•Calibrate
Calibrate
Typewrite
Read text
Entertain with games
Teach
•Read Text
•Entertain with games
Main Menu In Eye Gaze System
CONVERSATION
Good Bye
Good To
See You
Where Have
You Been
I’ Have
Missed You
I'm Happy
I'm Sad
I Need A
Hug
Good
I Like That
Talk To
Me
Yes
No
Pause
Menu
Hello
How Have
You Been?
Phrase Program
Telephone program
As a keyboard
mouse
controller
Lights & appliances
Program
Operational Environment
•The Eye gaze 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 mercuryvapor lights, which are low in
infrared.
Applications
Neuroscience/Neuropsychology
Vision Research
Experimental Psychology
Cognitive Psychology
Psycholinguistics
Psychiatry/Mental Health
Transportation: Flight simulators/driving simulators
Robotics-remote vision control
Video and arcade games
Advantages
• Eye movement is faster than other current input media
• No training or particular coordination is required for normal
users
• Can determine where the user’s interest is focused
automatically
• Helpful for usability studies to understand users interact with
their environment
Disadvantages
• The equipment is expensive
• Some users can't work with the equipment (for example if
they wear contact lenses or have long eye lashes)
• Calibrating the equipment takes time; this problem may
resultantly cause the user to deviate from using the device.
Latest potable Eye Gaze system
Eye Max
PCEYE
Intelli Gaze IG-30
•It is a sophisticated system with a high
tracking rate and excellent working
range.
• It can accommodate rapid or
involuntary head movements
•Intelli Gaze uses the latest camera
technology, very sophisticated image
processing and calibration methods
Images Of Eye Gaze Systems
CONCLUSION
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.
Any
Queries