ISO/IEC 39794-1:2019
(Main)Information technology — Extensible biometric data interchange formats — Part 1: Framework
Information technology — Extensible biometric data interchange formats — Part 1: Framework
This document specifies: — rules and guidelines for defining extensible biometric data interchange formats that are extensible without invalidating previous data structures; — the meaning of common data elements for use in extensible biometric data interchange formats; — common data structures for tagged binary data formats based on an extensible specification in ASN.1; — common data structures for textual data formats based on an XML schema definition; and — conformance testing concepts and methodologies for testing the syntactic conformance of biometric data blocks.
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INTERNATIONAL ISO/IEC
STANDARD 39794-1
First edition
2019-12
Information technology — Extensible
biometric data interchange formats —
Part 1:
Framework
Reference number
©
ISO/IEC 2019
© ISO/IEC 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO/IEC 2019 – All rights reserved
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 3
5 Conformance . 3
6 General biometric system . 3
6.1 Conceptual representation of general biometric system . 3
6.2 Conceptual components of a general biometric system. 4
6.2.1 Data capture subsystem . 4
6.2.2 Transmission subsystem. 4
6.2.3 Signal processing subsystem . 5
6.2.4 Data storage subsystem . 5
6.2.5 Comparison subsystem . 5
6.2.6 Decision subsystem . 5
6.2.7 Administration subsystem . 6
6.2.8 Interface . 6
6.3 Functions of general biometric system . 6
6.3.1 Enrolment . 6
6.3.2 Verification . 7
6.3.3 Identification . 7
7 Rules and guidelines . 8
7.1 Capture date and time . 8
7.2 Degree of processing . 8
7.2.1 Overview . 8
7.2.2 Captured biometric sample . 8
7.2.3 Intermediate biometric sample . 9
7.2.4 Biometric feature set . 9
7.3 Relationship to CBEFF . 9
7.3.1 Overview . 9
7.3.2 BDB format owner and format identifiers . 9
7.4 Types of extensible biometric data interchange formats .10
7.5 Criteria for standardizing biometric data interchange formats .10
7.6 Extensibility .11
7.7 Naming conventions for biometric data interchange formats .11
7.8 Treatment of multi-biometric data .11
7.9 Capture conditions .11
7.10 Capture device requirements .11
7.11 Quality requirements for biometric data .12
7.12 Biometric feature extraction algorithms .12
7.13 Biometric feature comparison algorithms .12
7.14 Identifiers for resources related to the ISO/IEC 39794 series .12
8 Abstract data elements .13
8.1 General .13
8.2 Version block .14
8.3 Representation block .14
8.3.1 Capture device block .14
8.3.2 Capture date/time block .15
8.3.3 Quality blocks .15
8.3.4 PAD data block .16
© ISO/IEC 2019 – All rights reserved iii
8.3.5 Extended data blocks .22
9 Tagged binary encoding scheme .22
9.1 General .22
9.2 Naming conventions for ASN.1 modules in the ISO/IEC 39794 series .23
9.2.1 ASN.1 module names . .23
9.2.2 Object identifier for ASN.1 modules .23
9.2.3 Type and component names .23
9.3 Prototypes .24
9.4 Abstract syntax of common data types for the ISO/IEC 39794 series, in ASN.1 .24
9.5 Abstract syntax of general BDB, in ASN.1 .24
9.6 Definition extension in ASN.1 .25
9.6.1 General.25
9.6.2 Addition of components to sequence types .25
9.6.3 Addition of components to choice types .26
9.6.4 Extension of an enumerated type with a new value .26
10 XML encoding scheme .28
10.1 General .28
10.2 Structure of XML schema definitions .28
10.3 Naming conventions for XML schema definitions in the ISO/IEC 39794 series .28
10.3.1 XML namespace names .28
10.3.2 Type and element names .29
10.4 Prototypes .29
10.5 XML schema definition of common data types for the ISO/IEC 39794 series .30
10.6 Definition extension in XML .30
10.6.1 General.30
10.6.2 Extending XML simple types .30
10.6.3 Extendi
...
INTERNATIONAL ISO/IEC
STANDARD 39794-1
First edition
2019-12
Information technology — Extensible
biometric data interchange formats —
Part 1:
Framework
Reference number
©
ISO/IEC 2019
© ISO/IEC 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO/IEC 2019 – All rights reserved
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 3
5 Conformance . 3
6 General biometric system . 3
6.1 Conceptual representation of general biometric system . 3
6.2 Conceptual components of a general biometric system. 4
6.2.1 Data capture subsystem . 4
6.2.2 Transmission subsystem. 4
6.2.3 Signal processing subsystem . 5
6.2.4 Data storage subsystem . 5
6.2.5 Comparison subsystem . 5
6.2.6 Decision subsystem . 5
6.2.7 Administration subsystem . 6
6.2.8 Interface . 6
6.3 Functions of general biometric system . 6
6.3.1 Enrolment . 6
6.3.2 Verification . 7
6.3.3 Identification . 7
7 Rules and guidelines . 8
7.1 Capture date and time . 8
7.2 Degree of processing . 8
7.2.1 Overview . 8
7.2.2 Captured biometric sample . 8
7.2.3 Intermediate biometric sample . 9
7.2.4 Biometric feature set . 9
7.3 Relationship to CBEFF . 9
7.3.1 Overview . 9
7.3.2 BDB format owner and format identifiers . 9
7.4 Types of extensible biometric data interchange formats .10
7.5 Criteria for standardizing biometric data interchange formats .10
7.6 Extensibility .11
7.7 Naming conventions for biometric data interchange formats .11
7.8 Treatment of multi-biometric data .11
7.9 Capture conditions .11
7.10 Capture device requirements .11
7.11 Quality requirements for biometric data .12
7.12 Biometric feature extraction algorithms .12
7.13 Biometric feature comparison algorithms .12
7.14 Identifiers for resources related to the ISO/IEC 39794 series .12
8 Abstract data elements .13
8.1 General .13
8.2 Version block .14
8.3 Representation block .14
8.3.1 Capture device block .14
8.3.2 Capture date/time block .15
8.3.3 Quality blocks .15
8.3.4 PAD data block .16
© ISO/IEC 2019 – All rights reserved iii
8.3.5 Extended data blocks .22
9 Tagged binary encoding scheme .22
9.1 General .22
9.2 Naming conventions for ASN.1 modules in the ISO/IEC 39794 series .23
9.2.1 ASN.1 module names . .23
9.2.2 Object identifier for ASN.1 modules .23
9.2.3 Type and component names .23
9.3 Prototypes .24
9.4 Abstract syntax of common data types for the ISO/IEC 39794 series, in ASN.1 .24
9.5 Abstract syntax of general BDB, in ASN.1 .24
9.6 Definition extension in ASN.1 .25
9.6.1 General.25
9.6.2 Addition of components to sequence types .25
9.6.3 Addition of components to choice types .26
9.6.4 Extension of an enumerated type with a new value .26
10 XML encoding scheme .28
10.1 General .28
10.2 Structure of XML schema definitions .28
10.3 Naming conventions for XML schema definitions in the ISO/IEC 39794 series .28
10.3.1 XML namespace names .28
10.3.2 Type and element names .29
10.4 Prototypes .29
10.5 XML schema definition of common data types for the ISO/IEC 39794 series .30
10.6 Definition extension in XML .30
10.6.1 General.30
10.6.2 Extending XML simple types .30
10.6.3 Extendi
...
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