BS ISO/IEC 19794-6:2005 - Information technology. Biometric data interchange formats. Iris image data – BSI British Standards

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BS ISO/IEC 19794-6:2005

Information technology. Biometric data interchange formats. Iris image data

Status : Current, Revised, Superseded   Published : July 2005 Replaced By :




The BS ISO/IEC 19794 standards are applicable to all identity management systems including:

  • identity document delivery and access management systems such as border controls, corporate identity and access cards
  • prison access/egress
  • forensic identification - to identify casualties or suspects at the scene of a crime
  • citizens' rights, including voting, national health, unemployment benefits, driving licences
  • privileges associated with a particular employment category, including access to highly secure areas such as ports, airports, military establishments, company buildings, information systems
  • access to services, including banking services, financial services, and online purchases.

BS ISO/IEC 19794 will be used in access control and identification systems such as those based on smart cards or other recognition tools, and also applies to the storage of biometric identification data in corporate databases.

BS ISO/IEC 19794-6:2005 defines a biometric data block format that contains a digital record of  the image of an iris.

There are two alternative image interchange formats for biometric authentication systems that utilize iris recognition. The first can be produced by minimal processing of the image. The second is more compact, but requires more processing of the image.

BS ISO/IEC 19794-6:2005 specifies how the image is to be acquired, and how it is to be converted to a digital representation, with a full specification of the digital format.


1 Scope
2 Conformance
3 Normative references
4 Terms and definitions
5 Symbols and abbreviated terms
6 Iris image format specification
Annex A (informative) Iris image capture
Annex B (informative) Sample image data records

See the full range of biometrics standards in the BS ISO/IEC 19794 series


See the latest biometrics information

Standard NumberBS ISO/IEC 19794-6:2005
TitleInformation technology. Biometric data interchange formats. Iris image data
StatusCurrent, Revised, Superseded
Publication Date29 July 2005
Cross ReferencesISO/IEC 19785-1, ISO/IEC 10918, ISO/IEC 15444, ISO/IEC 14495, ISO/IEC 19794-1, ANSI/NIST 358-2002, ANSI X9.84-2001
International RelationshipsISO/IEC 19794-6:2005
Draft Superseded By04/30107739 DC
DescriptorsData processing, Biometrics, Information exchange, Human body, Identification methods, Data representation, Eyes, Photographic images, Image processing (computer), Data compression
Title in FrenchTechnologies de l'information. Formats d'echange de donnees biometriques. Donnees d'image de l'iris
Title in GermanInformationstechnik. Biometrische Datenaustauschformate. Austauschformat basierend auf Irisbildern
ISBN0 580 46456 3
File Size1.276 MB
NotesBS ISO/IEC 19794-6:2005 has been reinstated to support existing deployments that currently incorporate its provisions, including travel documents.

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