EYE-GAZE COMMUNICATION (Eye gaze human computer interface) Presented By: Namitha.P.T

Users of the eye gaze system Working Applications Objectives : Introduction Users of the eye gaze system Working Applications Advantages & Disadvantages Future Enhancements Conclusion

Introduction The Eye gaze System is a communication and control system for people with complex physical disabilities. The Eye gaze System is a direct-select vision controlled communication and control system.

Users Of Eye Gaze 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

Skills needed by the user 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 Typewrite Read text Entertain with games Teach Read Text

Main Menu In Eye Gaze System

Phrase Program Telephone program CONVERSATION Good Bye Hello Good Bye Good To See You Where Have You Been How 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 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 mercury- vapor 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.

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