Biometric Security and Privacy Module 1.1

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Presentation transcript:

Biometric Security and Privacy Module 1.1 By Bon Sy Queens College/CUNY, Computer Science

Objective of biometrics Towards the development of automatic system for recognizing a person based on physiological or behavioral characteristics. Generic taxonomy

General biometric system Source: Evaluation of Fingerprint Recognition Technologies – BioFinger; Bundesamt fur Sicherjeit in der Informationstechnik

Steps for biometric verification Source: Evaluation of Fingerprint Recognition Technologies – BioFinger; Bundesamt fur Sicherjeit in der Informationstechnik

What exactly is a pattern and a pattern classifier? A pattern is a structure governed by rules… Pattern theory [Grenander 1993 & 1996], Information theory [Shannon 1948, Tufte ] Concept used in software design and information display – explains complex phenomena through pattern formation and deformation. Provides backdrop for science and technology training — modeling process for engineering design and scientific analysis Allows there to be links among various learning approaches

An example of a pattern Exhibits regularity Consistent behavior of data Elegant properties for generalization and prediction Examples: Fern fractal Tornados (weather phenomenon with a spiral rotating wind circulation)

Three components of a pattern Leaf Experiment, Part 1 Mathematical structure Functional expression Visual model Concept abstraction Graphical model Qualitative interrelationship

Extending pattern development Leaf Experiment, Part 2 Using randomization to “perturb” pattern Animating results

Four kinds of pattern manipulation Derivation Homogenous transformation Þ Structure discovery Synthesis Concept abstraction Þ Visualization Analysis (and Exploration) System identification Þ Mathematical function discovery Summary Relationship declaration Þ Dependency/decision model

Interrelationships among pattern manipulation FROM \ TO Mathematical Visual Graphical Dependency Derivation Synthesis Summary Analysis

Mathcad Examples Each file demonstrates: Deriving graphical representation from algebraic representation Synthesizing relationship between abstract (mathematical structure) and concrete (visual representation) Exploring underlying relationship or model by varying parameters and analyzing graphical or numerical results Summarizing dependency relationship or building model

Lorenz Attractor MCD

Visualizing a probability space MCD Same track for visualizing the computational geometry of a biometric system!

General framework for pattern abstraction

General framework for pattern abstraction Concept Formulation

Mechanism for pattern modeling and learning Explore through visualization Discover dependency structure Analysis based on regression analysis Discover mathematical structure Pattern synthesis based on mathematical structure Discover visual structure Compare and validate Summary and explanation

Fingerprint pattern and security application (verification) Source: Evaluation of Fingerprint Recognition Technologies – BioFinger; Bundesamt fur Sicherjeit in der Informationstechnik