06-Biometrics-Lecture-6-Part1-2008-10-27

06-Biometrics-Lecture-6-Part1-2008-10-27 - 1 Biometrics...

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Unformatted text preview: 1 Biometrics http://scgwww.epfl.ch/courses Master SC – Information and Communication Security Dr. Andrzej Drygajlo Speech Processing and Biometrics Group Signal Processing Institute Ecole Polytechnique Fédérale de Lausanne (EPFL) Center for Interdisciplinary Studies in Information Security (ISIS) 2 • Speaker Recognition • Dynamic Signature • Fingerprints • Iris • Face • Hand • Others • Multimodal Biometrics Leading Biometric Technology 3 Fingerprint Recognition • Generalities • Applications • Fingerprints and their images • History of fingerprints • Fingerprint sensing • Fingerprint features • Fingerprint matching • Fingerprint enhancement • Performance evaluation • Synthetic fingerprint generation 4 a.) 50 100 150 50 100 150 200 b.) 50 100 150 50 100 150 200 c.) 50 100 150 50 100 150 200 d.) 50 100 150 50 100 150 200 Example of singular point detection in a low quality fingerprint: a) vertical sign map, b) horizontal sign map, c) finding intersection points of the quadrant change boundaries, d) singular point detection. K. Kryszczuk, A. Drygajlo, "Singular point detection in fingerprints using quadrant change information“, ICPR 2006 core delta Level 1 features – singularities (core points) 5 Level 1 features – singularities (core points) Left loop Right loop Whorl Arch Tented arch core delta 6 Minutiae – Level 2 features 7 Local minutiae matching Fingerprint Template 8 Level 3 features Pores matching Minutiae matching 9 Fingerprint Recognition • Generalities • Applications • Fingerprints and their images • History of fingerprints...
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06-Biometrics-Lecture-6-Part1-2008-10-27 - 1 Biometrics...

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