ANSI INCITS 439 : 2008

Foreword
Introduction
Document Overview (Informative)
1 Scope
2 Conformance
3 Normative references
4 Terms and definitions
   4.1 biometric sample (sample) (harmonized)
   4.2 cumulative distribution function (CDF)
   4.3 genuine score
   4.4 impostor score
   4.5 location parameter
   4.6 probability density function (PDF)
   4.7 scale parameter
   4.8 similarity score
5 Abbreviations
6 Fusion Information Format (FIF)
   6.1 Overview
   6.2 Byte ordering
   6.3 Numeric values
   6.4 External CBEFF structure
   6.5 Fusion header block
        6.5.1 General
        6.5.2 Format identifier
        6.5.3 Version number
        6.5.4 Record length
        6.5.5 Biometric type
        6.5.6 Comparison subsystem Product ID
        6.5.7 Dataset ID
        6.5.8 Score sense
        6.5.9 Number of type instances
7 Common elements
   7.1 General
   7.2 Parameter kind
   7.3 Parameter origin
   7.4 Distributions present
   7.5 Pre-normalization flag
8 Type 1 record
   8.1 Purpose
   8.2 Format
        8.2.1 Supporting datatype - Subtype A
        8.2.2 Definition
        8.2.3 Type
        8.2.4 Distributions present
        8.2.5 Impostor distribution location
        8.2.6 Impostor distribution scale
        8.2.7 Genuine distribution location
        8.2.8 Genuine distribution scale
   8.3 Use case (Informative)
9 Type 2 record
   9.1 Purpose
   9.2 Format
        9.2.1 Supporting datatype - Subtype B
        9.2.2 Definition
        9.2.3 Type
        9.2.4 Distributions present
        9.2.5 Impostor distribution
        9.2.6 Genuine distribution
   9.3 Use case (Informative)
10 Type 3 record
   10.1 Purpose
   10.2 Format
        10.2.1 Supporting datatype - Subtype C
        10.2.2 Definition
        10.2.3 Type
        10.2.4 Distributions present
        10.2.5 Impostor distribution
        10.2.6 Genuine distribution
11 Type 4 record
   11.1 Purpose
   11.2 Format
        11.2.1 Supporting datatype - Subtype D
        11.2.2 Definition
        11.2.3 Type
        11.2.4 Distributions present
        11.2.5 Impostor distribution
        11.2.6 Genuine distribution
12 References
Annex A - Example Cumulative Distribution Functions (informative)
Annex B - Use of pre-normalized data (informative)
Annex C - Source for evaluation of spline [SPLINE] (informative)
Annex D - Source code for Hermite spline interpolant [HERMITE]
          (informative)

Biometric Fusion Information Format establishes machine readable data formats to describe the statistics of similarity score inputs to a fusion process.