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Fingerprint Verification

Fingerprint Verification. Bhushan D Patil PhD Research Scholar Department of Electrical Engineering Indian Institute of Technology, Bombay Powai, Mumbai 400076. Introduction. Biometric : A human generated signal or attribute for authenticating a person’s identity

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Fingerprint Verification

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  1. Fingerprint Verification Bhushan D Patil PhD Research Scholar Department of Electrical Engineering Indian Institute of Technology, Bombay Powai, Mumbai 400076

  2. Introduction • Biometric: A human generated signal or attribute for authenticating a person’s identity • Different biometric features 1.Face 2.Fingerprint 3.Iris 4.Signature 5.voice

  3. Why Fingerprint • The advantages of using fingerprint • fingerprint identification is one of the most reliable identification technique • Its validity is justified • It is most commonly used biometrics technique • Basic Approaches Minutia Based Approach Image Based Approach

  4. Automated Fingerprint Identification System

  5. Fingerprint Classification

  6. Signatures • Use signatures to determine if two fingerprints are from same finger • Ridge Endings • Ridge Bifurcations • These are termed “minutia”

  7. Minutiae

  8. Desired Information Correspondences between template and input F.P. are known There are no deformations (translations, rotation, non-linear deformations) Each minutia is exactly localized Minutiae Point Pattern Matching Real Situation • No correspondence is known beforehand • There are deformations • Spurious minutiae are present in templates and input images • Some minutiae are missed

  9. On-Line F.P. Verification System

  10. Minutia Extraction Estimation of Orientation Field Identify fingerprint region Ridge extraction Cleaning ridge segments Minutia extraction

  11. Estimation of Orientation Field • Orientation is the angle formed by the ridges with the horizontal axis • Find the local orientation of the ridge in small areas of the image • Steps Divide image into blocks of size WxW Compute gradients [Gx Gy]at each pixel in block Orientation at each block

  12. Minutia Extraction • Ridge Ending • Ridge Bifurcation

  13. Minutia Matching Point Pattern Alignment Matching Scoring

  14. MATLAB Implementation • GUI demo……….

  15. Thank You

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