AS ISO IEC 19794.5-2007 (2017) PDF

Full title and description

AS ISO/IEC 19794.5-2007 — Information technology — Biometric data interchange formats — Part 5: Face image data. Australian adoption of ISO/IEC 19794-5:2005 that specifies record formats, photographic and scene constraints, digital-image attributes and best-practice guidance for capture, storage and interchange of face images for human and automated recognition.

Abstract

This standard defines a file/record format and associated parameters for storing, recording and exchanging facial image data. It describes scene constraints (pose, expression, occlusions), photographic requirements (lighting, background, head position), digital-image attributes (resolution, color space, compression) and recommended practices for capture (including travel-document portraits). The Australian adoption (AS ISO/IEC 19794.5-2007) is identical to the international ISO/IEC 19794-5:2005 content and was reconfirmed in Australia in 2017.

General information

• Status: Superseded (was reconfirmed 7 July 2017; superseded by AS ISO/IEC 39794.5:2023).
• Publication date: 7 February 2007 (adoption of ISO/IEC 19794-5:2005).
• Publisher: Standards Australia (adoption of ISO/IEC JTC 1/SC 37 work).
• ICS / categories: 35.240.15 (Identification cards. Chip cards. Biometrics).
• Edition / version: Edition 1 (AS adoption of ISO/IEC 19794-5:2005).
• Number of pages: 47 (AS published document).

Scope

Specifies a record and file format and capture/formatting requirements for facial images intended for interchange between systems and organizations. The scope covers: single still images and short video streams used for enrolment and recognition; constraints on scene and subject presentation; photographic requirements; digital image attributes (format, resolution, compression); and guidance (best practice) for capture in applications such as travel documents and enrolment.

Key topics and requirements

• Record format for storing/transmitting one or more face images (meta-data and file structure).
• Scene constraints: frontal or near-frontal pose, neutral expression, unobstructed eyes, acceptable occlusions and head orientation limits.
• Photographic properties: lighting uniformity, neutral background, image framing and head-positioning recommendations.
• Digital-image attributes: recommended pixel counts, color space, focus/sharpness, dynamic range and acceptable compression (ISO-standard JPEG or JPEG2000 in the original edition).
• Best-practice capture guidance for machine-readable travel documents (MRTDs), enrolment and general-purpose face images.
• Conformance and testability considerations (later international amendments introduced conformance-test methodology and XML/encodings in subsequent ISO editions).

Typical use and users

Used by national ID and passport agencies, border-control authorities, biometric system developers and integrators, camera and software vendors, accreditation and testing laboratories, and organizations processing face images for identity verification and enrolment. Also referenced by implementers preparing datasets for algorithm development and by forensic/standards teams defining capture policies.

Related standards

Part of the biometric data interchange family. Closely related documents include the other parts of the ISO/IEC 19794 series (framework and fingerprint/iris formats) and companion CBEFF/CBF profiles. The international standard was later revised (ISO/IEC 19794-5:2011 and amendments) and the series was reorganized under the newer extensible format ISO/IEC 39794-5:2019; Standards Australia published AS ISO/IEC 39794.5:2023 (published 13 October 2023) which supersedes AS ISO/IEC 19794.5-2007.

Keywords

face image data, biometric interchange format, facial recognition, photographic requirements, JPEG, JPEG2000, enrolment, travel document portrait, biometric metadata, scene constraints

FAQ

Q: What is this standard?

A: AS ISO/IEC 19794.5-2007 is the Australian adoption of ISO/IEC 19794-5:2005 that defines formats, capture requirements and best practices for face image data used in biometric systems.

Q: What does it cover?

A: It covers record/file formats for face images, required scene and photographic constraints (pose, expression, background, lighting), digital image attributes (resolution, color space, compression) and guidance for capture and storage of images for identity verification and travel documents.

Q: Who typically uses it?

A: Passport/ID authorities, border and immigration agencies, biometric system vendors and integrators, testing labs, and organisations that capture or exchange face images for authentication or identification.

Q: Is it current or superseded?

A: The AS adoption was reconfirmed on 7 July 2017 but is now superseded. Standards Australia replaced it with AS ISO/IEC 39794.5:2023 (the newer extensible face-image interchange standard, published 13 October 2023). For new projects use the 2023 edition or the corresponding current international edition.

Q: Is it part of a series?

A: Yes — it is part of the biometric data interchange family (ISO/IEC 19794 series originally). The face-image part has subsequently been incorporated into the newer ISO/IEC 39794 series (extensible biometric data interchange formats).

Q: What are the key keywords?

A: Face image data, biometric interchange format, photographic requirements, pose, illumination, JPEG, JPEG2000, enrolment, travel document portrait.