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RNG techniques and biometrics

IP.com Disclosure Number: IPCOM000009442D
Publication Date: 2002-Aug-23

Publishing Venue

The IP.com Prior Art Database

Related People

Aled Jones: INVENTOR [+2]

Related Documents

PCT/GB02/00626: PATENT

Abstract

This document describes detailed examples of how the mechanisms of repeatable number generation are implemented in practice and how this implementation can be applied to a number of hypothetical contexts that bear resemblence to conventional biometrics.

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RNG Techniques and Biometrics

Scientific Generics

23 August 2002

Gavan Duffy

Scientific Generics Limited

Harston Mill

Harston

Cambridge CB2 5GG

A Generics Group company

 

CONTENTS

1        � � � � Introduction        .............................................................................................. 1

1.1        � � � � Abstract        ................................................................................................... 1

1.2        � � � � References        ............................................................................................. 1

1.3        � � � � Purpose of document............................................................................. 1

2        � � � � Frame-based Biometric Numbers (FBN)        ............................................. 2

2.1        � � � � Overview        ................................................................................................. 2

2.2        � � � � Background on frames........................................................................... 2

2.3        � � � � Biometric frames.................................................................................... 3

2.4        � � � � Generic structure of an ARV        ................................................................... 3

2.5        � � � � Generic operations of biometric frames and associated ARVs        ............. 5

2.6        � � � � Example specialisation of ARV for image bar-coding        ............................ 5

2.7        � � � � Example specialisation of ARV for pre-located feature bar-coding        ........ 7

2.8        � � � � Example specialisation of ARV for retina biometrics        .............................. 7

2.9        � � � � Hybrid nature of Biometric Frames and the ARV        ................................... 8

2.10        � � Algorithm for translation of encoding to an FBN – simple method        ......... 9

2.11        � � Summary of relationship between ARV, enrolment and verification        .... 12

3        � � � � Repeatable Number Generation – issues        ..................................... 14

4        � � � � Repeatable number Generation – How can it work.        ............... 21

4.1        � � � � Overview        ............................................................................................... 21

4.2        � � � � Selection and parameterisation of encoding strategy – strategy vector         22

4.3        � � � � Ensuring consistency of referencing – alignment vector        ..................... 26

4.4        � � � � Ensuring consistency of structure – exclusion vector        .......................... 26

4.5        � � � � Ensuring consistency of structure – field of view vector        ...................... 27

4.6        � � � � Ensuring consistency of structure – sequence vector        ......................... 27

4.7        � � � � Ensuring consistency of structure – category resolution vector        .......... 28

4.8        � � � � Ensuring consistency of structure – constraints vector        ....................... 29

4.9        � � � � Ensuring consistency of units – scaling vector        .................................... 30

4.10        � � Ensuring best case digital boundary effect– offset vector        .................... 31

4.11        � � Configuring rep...