Irirs Scan Ppt

8/8/2019 Irirs Scan Ppt

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WHAT IS BIOMETRICS ?WHAT IS BIOMETRICS ?

Biometrics comprises methods for

uniquely recognizing humans based uponone or more intrinsic physical or

behavioral traits.


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y Conventional authentication

methods

something that you have key, magnetic card

or smartcard

something that you know PIN or password

y Biometric authentication usespersonal features

something that you are


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WHY USE IT?WHY USE IT?

y

Traditional methods involving passwordsand PIN numbers

y Biometrics highest level of security


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CHARACTERISTICS USED INCHARACTERISTICS USED IN

BIOMETRICSBIOMETRICS Fingerprints

Voiceprints

Facial features Writing patterns

Iris patterns

Hand geometry


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Iris is a protected internal organ whose

random texture is stable throughout life

WHAT IS IRIS?WHAT IS IRIS?


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WHY IRIS?WHY IRIS?

y Enormous pattern variability

y

Satisfying performance

y Low error rates


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IRIS PROPERTIESIRIS PROPERTIES

High degree of Randomness

No two Iris are alikeStable in a persons life

Doesn't vary with changes


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Pre

processingFeature-

extraction

Identification

VerificationStoredtemplates

Uniformdistribution

Iris

localizationIris code comparison

IRIS SYSTEMIRIS SYSTEM

An iris recognition system uses a video camera to capture thesample while the software compares the resulting data against

stored templates.


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STEPS IN IRIS RECOGNITIONSTEPS IN IRIS RECOGNITION

oLocalization

oNormalization

oFeature Extraction

oMatching


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LocalizationLocalization

o The iris inner and outer boundaries

are located by finding the edge image

using the canny edge detector.


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NormalizationNormalization

y Iris of different people may be captured in

different size ,for the same person also

the size may vary depending upon

variation in illumination and other factors


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FEATURE EXTRACTIONFEATURE EXTRACTION

y Iris provides abundant texture

information a featured vector is formed

which consists of ordered sequence of

features extracted from various

representation of iris images


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MatchingMatching

y The feature vectors are classified through

various thresholding techniques like

hamming distance,weight vector and

winner selection and dissimilarity

selection function etc


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ADVANTAGE OF IRISADVANTAGE OF IRIS

RECOGNITION SYSTEMSRECOGNITION SYSTEMSy The false acceptance rate for irisrecognition systems is 1 in 1.2 million,statistically better than the average

fingerprint recognition system.y The real benefit is in the false-rejection

rate, a measure of authenticated userswho are rejected.

y Fingerprint scanners have a 3 percentfalse-rejection rate, whereas iris scanningsystems boast rates at the 0 percent level


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Software RequirementsSoftware Requirements

y Matlab R2009b.


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ScopeScope

y Our goal is to use and propose a robust

iris recognition approach which can

perform with good accuracy under

degraded condition (eyelashes, lens,glasses frame, low light level, blurring due

to motion or unfocused scan) and

which can easily learn new individual andwhich is able to improve learned feature

with repeat scans.

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Irirs Scan Ppt