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By:- Karan Kumar
ECE-4thyear
SeminaronEye Gaze
Communication
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The Eye gaze System is a communication andcontrol system for people with complex
physical disabilities By looking at control keys displayed on a
screen, a person can operate a telephone, runcomputer software, operate a computermouse, and access the Internet and e-mail
Eye gaze Systems are being used to writebooks, attend school and enhance the !ualityof life of people with disabilities all o"er theworld
INTRODUCTION
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#s a user sits in front of the Eyegaze monitor,a specialized "ideo camera mounted belowthe monitor obser"es one of the user$s eyes
Sophisticated image- processing software inthe Eyegaze System$s computer continuallyanalyzes the "ideo image of the eye anddetermines where the user is looking on thescreen
%othing is attached to the user$s head orbody
HOW DOES THE EYEGAZESYSTEM WORKS
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In detail the procedure can be described asfollows& The Eyegaze
System uses the pupil-center'corneal-
re(ection method to determine where theuser is looking on the screen )* pictures per second of the user$s eye
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a!ic "ia#ram $or eye #azecommunication
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New portable eye gaze systems
Advanc m nts
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It is a sophisticated system with a high
tracking rate and
Excellent working range.
It can accommodate rapid or involuntary head
movements Intelligence uses the latest
camera
Technology, very
sophisticated image
processing and
calibration
Int lliaz I!"#
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Scanning +eyboard is the new row'columnkeyboard with an onscreen eye switch forpeople with limited eye mo"ement Theswitch can be placed on either side, abo"e,or below the keyboard to accommodate
users with only horizontal mo"ement, or
only "ertical mo"ement The user may speak what he has typed
%OR &EO&'E WITH 'IMITED EYE CONTRO'
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Because eye tracking is done using infraredlight Eyegaze system must take care oflight sources in the room in order to ensurethe best accuracy
The System works best away from windows,
and in a room lit with (uorescent ormercury-"apor lights, which are low ininfrared
EN(IRONMENT RE)UIRED %ORAN EYEGAZE SYSTEM
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T*ey mu!t +e ca,i+rate" re-eate",y $oreac* in"i.i"ua,
T*ey *a.e ,o/ to,erance $or *ea"mo.ement an" re0uire" t*e u!er to*o," t*e *ea" uncom$orta+,y !ti,,
Di!a".anta#e!
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Today, the human eye!gaze can be recorded by
relatively unremarkable techni$ues. This thesis
argues that it is possible to use the eye!gaze o%
a computer user in the inter%ace to aid the
control o% the application.
&are must be taken, though, that eye!gaze
tracking data is used in a sensible way, since
the nature o% human eye!movements is acombination o% several voluntary and involuntary
cognitive processes.
Conc,u!ion
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T*an1you