NZS ISO/IEC 19794.2:2025
Information technology – Biometric data interchange formats – Part 2: Finger minutiae data
This standard defines extensible formats for representing fingerprint minutiae – ridge endings and bifurcations – using binary, XML, and TLV (Tag-Length-Value) encodings. It includes parameters for on-card biometric comparison and provides good practices for determining minutiae location, direction, and type. It also outlines conformance testing procedures, which play a key role in supporting secure and interoperable fingerprint recognition across New Zealand’s digital infrastructure.
This standard was considered for adoption by the P4830 Identical Adoption of Digital Standards Committee which included experts from government, industry, academia, and the private sector, all focused on the responsible use of emerging technologies.
This standard is identical to and has been reproduced from ISO/IEC 19785.2, Information technology – Common Biometric Exchange Formats Framework, Part 2: Biometric Registration Authority.
| Get this standard | Prices exclude GST | |
|---|---|---|
| PDF ( Single user document) |
$219.71 NZD
|
|
| HardCopy |
$244.13 NZD
|
|
| Networkable PDF |
Price varies
|
|
| Online Library ( Annual subscription) |
Info
Price varies
Online Library subscription information Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team. |
NZS ISO/IEC 19794.2 2025
Committee representation
Acknowledgement
Copyright
Preface
ISO IEC 19794.2.pdf
Scope
Conformance
Normative references
Terms and definitions
Abbreviated terms
Minutiae extraction
Purpose
Minutia description
Minutia type
General
Unique minutia
Encoding trifurcations
Minutia location
General
Coordinate system
Minutia placement on a ridge ending (encoded as valley skele
Minutia placement on a ridge bifurcation (encoded as a ridge
Minutia placement on a ridge skeleton endpoint
Usage of the minutia placement by the record and on-card bio
Minutiae direction
Angle conventions
Minutia direction of a ridge ending (encoded as valley skele
Minutia direction of a ridge bifurcation (encoded as ridge s
Minutia direction of a ridge skeleton end point
Core and delta placement
Encoding of multibyte quantities
Finger minutiae format types
Overview
Record format
On-card comparison format
Finger minutiae record format
Introduction
Record organization
General header
Format identifier
Version number
Length of record
Number of finger representations
Device certification block flag
Finger minutiae representation format
Finger minutiae representation header
Representation length
Capture date-time
Capture device technology ID
Capture device vendor identifier
Capture device type identifier
Finger image quality
General
Number of quality Blocks
Quality score
Quality algorithm vendor ID
Quality algorithm ID
Capture device certifications
General
Number of certifications
Certification authority identifier
Certification scheme identifier
Finger position
Representation number
Image spatial sampling rate (horizontal)
Image spatial sampling rate (vertical)
Impression type
Size of scanned image in X-direction
Size of scanned image in Y-direction
Minutia field length
Ridge ending type
Number of minutiae
Finger minutiae data
Qualified finger minutia pixel record format
Overview
Minutia type
Minutia position
Minutia angle
Minutia quality
Finger minutia pixel record format
Overview
Minutia type, position, and angle
Extended data
Common extended data fields
Extended data block length
Extended data area type code
Extended data area length
Data section
Ridge count data format
Ridge count extraction method
Eight-neighbour ridge count extraction method
Four- neighbour ridge count extraction method
Ridge Count Data
Ridge count format summary
Core and delta data format
General
Core information
Number of cores
Core information type
Core position
Core angle
Delta information
Number of deltas
Delta information type
Delta position
Delta angles
Core and delta format summary
Zonal quality data
General
Zonal quality vendor ID
Zonal quality algorithm ID
Cell width and height
Cell quality information depth
Cell quality data
Zonal quality data format summary
Finger minutiae on-card comparison format
Purpose
On-card comparison format
Minutia placement
Encoding
Minutia position
Minutia type
Minutia angle
Number of minutiae and truncation
General aspects
Removing minutiae for card processing
Lack of minutiae
Biometric comparison algorithm parameters
Number of minutiae
Minutiae order
Data object for minutiae ordering
Ordered ascending
Ordered descending
Cartesian X-Y
Cartesian Y-X
Angle
Polar
X or Y Coordinate extension
Usage of extended data for the on-card comparison format
Data objects for extended data
Zonal quality data modified for on-card comparison minutiae
Zonal quality data format summary
Density of cells in the quality map
Quality map width and height
Cell quality information depth
Cell quality data
Indication of card capabilities
Registered format type identifiers
ISO IEC 19794 Corrigendum.pdf
ISO IEC 19794 AMDT 1.pdf
ISO IEC 19794 AMDT 2.pdf
Keep me up-to-date
Sign up to receive updates when there are changes to this standard
Related Information
Similar Standards
-
AS/NZS 13818.7:1999
Information technology - Generic coding of moving pictures and associated audio information - Advanced audio coding
-
AS/NZS ISO 28560.3:2023
Information and documentation - RFID in libraries, Part 3: Fixed length encoding
-
AS/NZS ISO/IEC 12785.2:2013
Information technology - Learning, education, and training - Content packaging - Part 2: XML binding -
AS/NZS ISO/IEC 27005:2024
Information security, cybersecurity and privacy protection – Guidance on managing information security risks
NZS ISO/IEC 19794.2 2025
Committee representation
Acknowledgement
Copyright
Preface
ISO IEC 19794.2.pdf
Scope
Conformance
Normative references
Terms and definitions
Abbreviated terms
Minutiae extraction
Purpose
Minutia description
Minutia type
General
Unique minutia
Encoding trifurcations
Minutia location
General
Coordinate system
Minutia placement on a ridge ending (encoded as valley skele
Minutia placement on a ridge bifurcation (encoded as a ridge
Minutia placement on a ridge skeleton endpoint
Usage of the minutia placement by the record and on-card bio
Minutiae direction
Angle conventions
Minutia direction of a ridge ending (encoded as valley skele
Minutia direction of a ridge bifurcation (encoded as ridge s
Minutia direction of a ridge skeleton end point
Core and delta placement
Encoding of multibyte quantities
Finger minutiae format types
Overview
Record format
On-card comparison format
Finger minutiae record format
Introduction
Record organization
General header
Format identifier
Version number
Length of record
Number of finger representations
Device certification block flag
Finger minutiae representation format
Finger minutiae representation header
Representation length
Capture date-time
Capture device technology ID
Capture device vendor identifier
Capture device type identifier
Finger image quality
General
Number of quality Blocks
Quality score
Quality algorithm vendor ID
Quality algorithm ID
Capture device certifications
General
Number of certifications
Certification authority identifier
Certification scheme identifier
Finger position
Representation number
Image spatial sampling rate (horizontal)
Image spatial sampling rate (vertical)
Impression type
Size of scanned image in X-direction
Size of scanned image in Y-direction
Minutia field length
Ridge ending type
Number of minutiae
Finger minutiae data
Qualified finger minutia pixel record format
Overview
Minutia type
Minutia position
Minutia angle
Minutia quality
Finger minutia pixel record format
Overview
Minutia type, position, and angle
Extended data
Common extended data fields
Extended data block length
Extended data area type code
Extended data area length
Data section
Ridge count data format
Ridge count extraction method
Eight-neighbour ridge count extraction method
Four- neighbour ridge count extraction method
Ridge Count Data
Ridge count format summary
Core and delta data format
General
Core information
Number of cores
Core information type
Core position
Core angle
Delta information
Number of deltas
Delta information type
Delta position
Delta angles
Core and delta format summary
Zonal quality data
General
Zonal quality vendor ID
Zonal quality algorithm ID
Cell width and height
Cell quality information depth
Cell quality data
Zonal quality data format summary
Finger minutiae on-card comparison format
Purpose
On-card comparison format
Minutia placement
Encoding
Minutia position
Minutia type
Minutia angle
Number of minutiae and truncation
General aspects
Removing minutiae for card processing
Lack of minutiae
Biometric comparison algorithm parameters
Number of minutiae
Minutiae order
Data object for minutiae ordering
Ordered ascending
Ordered descending
Cartesian X-Y
Cartesian Y-X
Angle
Polar
X or Y Coordinate extension
Usage of extended data for the on-card comparison format
Data objects for extended data
Zonal quality data modified for on-card comparison minutiae
Zonal quality data format summary
Density of cells in the quality map
Quality map width and height
Cell quality information depth
Cell quality data
Indication of card capabilities
Registered format type identifiers
ISO IEC 19794 Corrigendum.pdf
ISO IEC 19794 AMDT 1.pdf
ISO IEC 19794 AMDT 2.pdf
NZS ISO/IEC 19794.2:2025
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.