ISO IEC 19794-5-2011 amd2-2015 cor1-2016 PDF

Full title and description

ISO/IEC 19794-5:2011/Amd 2:2015/Cor 1:2016 — Information technology — Biometric data interchange formats — Part 5: Face image data — Amendment 2: XML encoding and clarification of defects — Technical Corrigendum 1. This document is the 2011 Part 5 face-image standard together with Amendment 2 (which adds XML encoding and clarifications) and the Technical Corrigendum 1 that corrects/clarifies defects in the amendment.

Abstract

This standard defines a machine- and human-readable record format for storing, recording and transmitting face images (and short face-image video streams) and associated metadata to support automated face recognition and human inspection. It specifies scene and photographic constraints, required and optional digital image attributes, recommended capture practices, metadata structures (including the XML encoding introduced by Amendment 2) and conformance considerations. The 2016 corrigendum fixes errors and clarifies points in the 2015 amendment.

General information

• Status: Published (base standard and subsequent amendment/corrigendum).
• Publication date: Original standard published 3 November 2011; Amendment 2 published 16 November 2015; Technical Corrigendum 1 published 9 December 2016.
• Publisher: ISO and IEC (prepared by ISO/IEC JTC 1/SC 37 — Biometrics).
• ICS / categories: 35.240.15 (Identification cards and related devices / Biometrics).
• Edition / version: Edition 2 (ISO/IEC 19794-5:2011) with Amendment 2 (2015) and Corrigendum 1 (2016).
• Number of pages: Base standard: 111 pages; Amendment 2: 75 pages; Corrigendum 1: 12 pages.

Scope

Specifies a standardized interchange format for facial image data and related descriptive metadata to enable reliable exchange, automated processing and manual review. The scope covers image record structure, scene constraints (pose, expression, occlusion, lighting), photographic properties (resolution, color space, compression), digital attributes (image quality metrics and annotations), metadata elements and an XML encoding option introduced by Amendment 2. It is aimed at enabling interoperable capture, storage and exchange of face images for identification and verification systems.

Key topics and requirements

• Standardized record format for single or multiple face images and short video streams.
• Scene and capture constraints: acceptable pose ranges, neutral expression guidance, illumination and occlusion limits.
• Photographic properties and technical requirements: recommended resolution, sensor/color characteristics, and acceptable compression schemes.
• Image attributes and quality metadata: required/optional fields for image quality, capture device, timestamps and subject orientation.
• Face region markup and coordinate systems to locate eyes, nose, mouth and bounding boxes for face crops.
• XML encoding and metadata representation introduced by Amendment 2 for easier machine parsing and interchange.
• Conformance considerations and clarifications provided by Corrigendum 1 (errata and explanatory fixes to Amendment 2).
• Best-practice guidance for capture (photography recommendations) to produce images usable for automated recognition and human review.

Typical use and users

Used by government identity programs (e.g., passports, national ID), border control and immigration agencies, law enforcement, credential-issuing bodies, biometric system vendors, camera and device manufacturers, systems integrators and researchers developing or evaluating face recognition systems. Also used by organizations implementing interoperability and conformance testing for face-image data exchange.

Related standards

Part of the ISO/IEC 19794 series (Biometric data interchange formats). Commonly referenced companion documents include ISO/IEC 19794-1 (Framework), 19794-2/3/4 (fingerprint and finger-image related parts), 19794-6 (iris), 19794-7/11 (signature), 19794-9 (vascular), and ISO/IEC 19795 (biometric performance testing and reporting). It is also used together with ICAO/9303 passport photo specifications and other biometric interchange and packaging standards.

Keywords

face image, biometric data interchange, ISO/IEC 19794-5, XML encoding, metadata, face pose, image quality, passport photo, conformance, SC 37, facial biometrics

FAQ

Q: What is this standard?

A: ISO/IEC 19794-5 is the international standard that specifies how face images and associated metadata should be formatted and exchanged to support automated and manual face recognition. The entry here includes Amendment 2 (2015) which added XML encoding and clarifications, and Corrigendum 1 (2016) which corrects defects in that amendment.

Q: What does it cover?

A: It covers the record format for one or more facial images (or short video streams), scene and photographic constraints (pose, expression, lighting, occlusion), required and optional image attributes, face-region markup, recommended capture practices and an XML metadata encoding option. It also includes conformance guidance and clarifications provided by the corrigendum.

Q: Who typically uses it?

A: National ID and passport authorities, border and immigration control, law enforcement, biometric system and camera vendors, systems integrators, and researchers or labs performing interoperability and conformance testing.

Q: Is it current or superseded?

A: The base edition referenced is ISO/IEC 19794-5:2011 (Edition 2) with Amendment 2 (2015) and Corrigendum 1 (2016). Users should check the issuing bodies for any later revisions or newer editions beyond 2016 if they need the very latest normative text.

Q: Is it part of a series?

A: Yes — it is Part 5 of the ISO/IEC 19794 series (Biometric data interchange formats) and is intended to be used alongside other parts of that series (Framework, fingerprint parts, iris, signature, etc.) and related biometric performance standards such as ISO/IEC 19795.

Q: What are the key keywords?

A: Face image, biometric interchange, XML encoding, metadata, image quality, pose, conformance, ISO/IEC 19794-5.