PRESENTED BY

CH.PRADEEP

TECHNICAL SEMINAR ON

EYE-GAZECOMMUNICATION SYSTEM

CONTENTS: ABSTRACT INTRODUCTION USERS OF THE EYEGAZE SYSTEM SKILL NEEDED BY THE USERS PARTS AND WORKING HOW TO RUN THE EYEGAZE SYSTEM USES OF EYEGAZE MENUS OF THE EYEGAZE SYETEM ENVIRONMENT REQUIRED FOR A SYSTEM ADVANCEMENTS APPLICATIONS FUTURE SCOPE CONCLUSION BIBILOGRAPHY

ABSTRACT

•The Eye gaze System is a communication system for people with complex physical disabilities.

•This operates with eyes by looking at control keys displayed on a screen.

•With this system a person can synthesize speech, control his environment , operate a telephone, run computer software, operate a computer mouse, and access the Internet and e-mail.

INTRODUCTION

The Eye gaze System is a direct-select vision-controlled communication and control system.  

It was developed in FAIRFAX, Virginia by LCTechnologies.

Who is using the Eyegaze 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, ALS, multiple sclerosis, brainstem strokes

SKILLS NEEDED BY THE USERS

Good control of one eye 

Adequate vision

Ability to maintain a position in front of the Eye gaze monitor.

Mental abilities that improve the probability for successful Eyegaze use:

CognitionAbility to readMemory

PARTS AND WORKING OF THE EYEGAZE SYSTEM

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.

How to run the Eyegaze System

A user operates the Eyegaze System by looking at rectangular keys that are displayed on the control screen.

To "press" an Eyegaze key, the user looks at the key for a specified period of time.

USES OF EYEGAZE

The Basic Eyegaze Can Calibrate Typewrite Read Text Entertain with games Teach Screens

With Options The Eye gaze Can

•BE AT TWO SITES!!•BE A KEYBOARD •SPEAK through a speech synthesizer•CONTROL appliances •DIAL and answer a phone

MENUS OF EYEGAZE SYSTEM

The Phrase Program Typewriter Program

The telephone program

Run Second PC

Paddle games & Score Four

Read Text Program

Television

The Phrase Program Typewriter Program

The telephone program The Lights & appliances Program

Run Second PC

As a keyboard As a mouse controller

Environment required for an Eyegaze system

•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.

ADVANCEMENTS

Portable Eyegaze System Mounted on Wheelchair Screen of Eyegaze System

 

•It is a sophisticated system with a high tracking rate and excellent working range.• It can accommodate rapid or involuntary head movements

IntelliGaze IG-30

•Intelligaze uses the latest camera technology, very sophisticated image processing and calibration methods

For People with Limited Eye Control

Scanning Keyboard is the new row/column keyboard with an on-screen eye "switch" for people with limited eye movement.

The user may "speak" what he has typed.

Some of the common eye movement problems that interfere with Eyegaze use are

Nystagmus - constant, involuntary movement of the eyeball

Alternating strabismus - eyes cannot be directed to the same object, either one deviates

The common vision problems are:

Inadequate Visual acuityDiplopia (double vision) Blurred visionCataracts (clouding of the lens of the eye)

APPLICATIONS

•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

FUTURE WORK

•Totally Free Head Motion •Automatic Eye Acquisition •Binocular Eye tracking •High Gaze point Tracking Accuracy •Easy User Calibration

The Eye gaze System’s Eyefollower2.0

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.

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.

BIBOLOGRAPHY

IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, VOL.10, NO.1, MARCH 2012.

Department of Computer Science,Clemson University.

{hmurphy/Andrew}@vr.clemson.edu

www.cds.hawaii.edu

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