GB/T 26237.5-2023Information technology - Biometric data interchange formats - Part 5: Face image data (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting:

This document is part 5 of GB/T 26237 "Information Technology Biometric Data Interchange Format": GB/T 26237 has issued Published the following sections:

--- Part 1: Framework;

--- Part 2: Fingerprint detail point data;

--- Part 3: Fingerprint spectral data;

--- Part 4: Fingerprint image data;

--- Part 5: Face image data;

--- Part 6: Iris image data;

--- Part 7: Signature/signature time series data;

--- Part 8: Fingerprint skeleton data;

--- Part 9: Vascular image data;

--- Part 10: Hand contour data;

--- Part 11: Processed signature/signature dynamic data;

--- Part 13: Sound data;

--- Part 14: DNA data;

--- Part 15: Palmprint image data:

This document replaces GB/T 26237.5-2014 "Information Technology Biometric Data Interchange Format - Part 5: Facial Image Data", compared with GB/T 26237.5-2014, except for structural adjustment and editorial changes, the main technical changes are as follows:

a) Added "conformity test methods, test assertions and test procedures" in the provisions of "scope", and explained that the conformity test does not apply Scope of use (see Chapter 1);

b) Three terms "Assertion" (3:5), "Test Assertion" (3:6) and "Biometric Characteristics" (3:9) have been added (see Chapter 3);

c) Deleted "continuous tone image" (see 3.11 of the:2014 edition), "dots per inch" (see 3.14 of the:2014 edition), "manual inspection Check" (see 3.20 of the:2014 edition), "texture perspective matrix" (see 3.27 of the:2014 edition);

d) "Human body scan markers" (see 3.5 of the:2014 edition) are changed to "human body measurement markers" (3:7), "human body scan markers Code" (see 3.5 of the:2014 edition) is changed to "anthropometric marker coding" (3:8), and "color gamut" (see:2014 edition of 3:10) changed from "color space" (3:13), "mark point" (see 3.17 of the:2014 edition) to "feature point" (3:18), "area map Image" (see 3.24 of the:2014 edition) was changed to "depth image" (3:24), "feature points" (3:18), "fisheye" (3:19) and Definition of the term "red eye" (3:25) (see Chapter 3);

e) Added four abbreviations "ID, IUT, UTC, XML" (see Chapter 4);

f) Deleted the two abbreviations "PPCM, PPMM" (see Chapter 4, Chapter 4 of the:2014 edition);

g) Changed the fixed-length bytes of the face information block and the image information block (see 6.1, 6:1 of the:2014 edition);

h) Added "structure" (see 6.5:1);

i) Changed the anthropometric marker points and the corresponding point codes and MPGE4 codes (see 6.6:6 Figure 8, Table 15,:2014 edition

6.6.6 Figure 8, Table 15);

j) Added "3D acquisition equipment supplier ID" (see 6.10:9);

k) Added the chapter "Registration Format Type ID" (see Chapter 15);

l) Added two normative appendices, "Conformity Test Method" (see Appendix A) and "XML Schema Definition" (see Appendix F):

This document is modified to adopt ISO/IEC 19794-5:2011 "Information Technology Biometric Data Interchange Format - Part 5: People Face Image Data":

Compared with ISO/IEC 19794-5:2011, this document has made the following structural adjustments:

--- Chapter 2 corresponds to Chapter 3 in ISO/IEC 19794-5:2011;

--- Chapter 3 corresponds to Chapter 4 in ISO/IEC 19794-5:2011;

--- Added Chapter 4 "Abbreviations";

--- Chapter 5 corresponds to Chapter 2 in ISO/IEC 19794-5:2011;

---Chapter 6 corresponds to Chapter 5 in ISO/IEC 19794-5:2011, of which 6:5:9:1 corresponds to ISO/IEC 19794-5:2011 5:5:9, 6:5:9:2~6:5:9:4 correspond to 5:5:9:1~5:5:9:3, 6:10:1 in ISO/IEC 19794-5:2011 5:10, 6:10:2~6:10:16 in ISO/IEC 19794-5:2011 correspond to 5:10:1~ in ISO/IEC 19794-5:2011 5:10:15;

--- Chapter 7 corresponds to Chapter 6 in ISO/IEC 19794-5:2011;

--- Chapter 8 corresponds to Chapter 7 in ISO/IEC 19794-5:2011;

--- Chapter 9 corresponds to Chapter 8 in ISO/IEC 19794-5:2011;

--- Chapter 10 corresponds to Chapter 9 in ISO/IEC 19794-5:2011;

--- Chapter 11 corresponds to Chapter 10 in ISO/IEC 19794-5:2011;

--- Chapter 12 corresponds to Chapter 11 in ISO/IEC 19794-5:2011;

--- Chapter 13 corresponds to Chapter 12 in ISO/IEC 19794-5:2011;

--- Chapter 14 corresponds to Chapter 13 in ISO/IEC 19794-5:2011;

--- Chapter 15 corresponds to Chapter 14 in ISO/IEC 19794-5:2011;

---Figures 1 to 17 correspond to Figures 2 to 18 in ISO/IEC 19794-5:2011, and Tables 1 to 2 correspond to ISO/IEC 19794-5:

Table 2 to Table 3 in:2011, where Table E:1 and Figure E:1 of Appendix E correspond to the introduction in ISO/IEC 19794-5:2011

Table 1 and Figure 1:

The technical differences between this document and ISO/IEC 19794-5:2011 and their reasons are as follows:

--- The normative reference document GB/T 5271.37-2021 has been added, because the terms of this document are cited (see Chapter 3);

--- Added three terms "assertion" (3:5), "test assertion" (3:6), "biometric feature" (3:9) to facilitate the understanding of this document;

--- Added "abbreviations" (Chapter 4) to facilitate the understanding of this document;

---Replace the relevant content of the ASCII code with the normatively quoted GB/T 1988 to meet the coding requirements of our country (see 6.1, Table 1 and 6:3:3);

--- Added "Table 3 date and time format" in the collection time (6:4:3) to facilitate a better understanding of this document;

--- The normative reference document GB/T 28826.2 has been added, because the registration authority operating procedures of this document are referenced (see 6.4:5, Table 5: Chapter 15 and Table A:2);

--- Increase the registration method of domestic institutions in the equipment supplier ID (6:4:5) to match the actual domestic industry usage;

--- The normative reference document GB/T 33767.1 has been added, because the determination of the quality score of this document is referenced (see 6.4:8);

--- The normative reference document GB/T 30267.1 has been added, because the definition of the quality score value of this document is referenced (see 6.4:8);

--- Added the description of "mask cover" in Table 10 of 6:5:7, which matches the actual industry usage;

--- Increase the number of certificates in 6:4:11, which is consistent with 6:4:1, to facilitate a better understanding of this document;

--- Increased the normative reference file GB/T 17966, because the single-precision binary floating-point format of this file is referenced (see 6.10:5);

--- ISO/IEC 15444-1 was replaced by GB/T 30248.1 with normative references (see 7.2);

--- ISO/IEC 10918-1 was replaced by GB/T 17235.1 with normative references (see 7.2);

---Changed the international registration requirements to correspond to the domestic registration requirements SAC/TC28/SC37, and the actual industry usage match;

--- Changed Table 1 and Figure 1 in ISO/IEC 19794-5:2011 as normative Appendix E for better application:

The following minimal editorial changes have been made to this document:

---Incorporated ISO/IEC 19794-5:2011/Amd:1:2014, ISO/IEC 19794-5:2011/Amd:2:2015, ISO/Amendments to IEC 19794-5:2011/Amd::2015/Cor:1:2016, the position of the outer margin of the terms involved Marked with a vertical double line (||):

Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:

Introduction

GB/T 26237 "Information Technology Biometric Data Interchange Format" supports interoperability between biometric applications and systems Operation and data exchange, the biometric data exchange format is specified for different biometric modes, in line with the specified in GB/T 26237 the parties in the biometric data exchange format can decode each other's biometric data, so as to meet the requirements of applying biometric technology to Complexity requirements of various applications:

GB/T 26237 "Information Technology Biometric Data Exchange Format" is proposed to be composed of 15 parts:

--- Part 1: Framework: The purpose is to specify the common content, meaning and representation applicable to the format of biometric data:

--- Part 2: Fingerprint detail point data: The purpose is to specify a data record exchange format and compliance test for fingerprint minutiae points:

try method:

--- Part 3: Fingerprint spectral data: The purpose is to specify a fingerprint data record exchange format and conformity testing method:

--- Part 4: Fingerprint image data: The purpose is to specify a data record exchange format and compliance test for fingerprint images method:

--- Part 5: Face image data: The purpose is to specify a data record exchange format and compliance test for face images method:

--- Part 6: Iris image data: The purpose is to specify an iris image data record exchange format and compliance test method:

--- Part 7: Signature/signature time series data: The purpose is to specify a data record exchange format for signature/signature data and compliance testing methods:

--- Part 8: Fingerprint skeleton data: The purpose is to specify a fingerprint data exchange format based on the fingerprint line skeleton and conform to sexual testing method:

--- Part 9: Vascular image data: The purpose is to specify a data record exchange format and compliance test for human blood vessel images:

try method:

--- Part 10: Hand contour data: The purpose is to specify a data record exchange format and conformity test for hand contour data:

try method:

--- Part 11: Processed signature/signature dynamic data: The purpose is to specify a type of processed signature/signature dynamic data Data record exchange formats and compliance testing methods:

--- Part 12: Face characteristic data: The purpose is to specify a data record exchange format and compliance test for facial characteristics method:

--- Part 13: Sound data: The purpose is to specify a voice data recording exchange format and compliance testing method:

--- Part 14: DNA data: The purpose is to specify a DNA data record exchange format and compliance testing method:

--- Part 15: Palmprint image data: The purpose is to specify a data record exchange format and compliance test for human palmprint images:

try method:

Digital facial images are used in a variety of applications including identity checks and computerized automatic facial recognition: Although the image format has been it is standardized for several situations, such as passports and driver's licenses, but it is still necessary to specify a standard data format for digital face images in order to meet the needs of various suppliers:

interoperability between vendors:

Typical applications are:

---Identity check with face image, the face image has been fully processed so that the person performing the identity check can confirm, for example, moles and Small features such as scars that can be used for identification;

---Complete identity recognition by comparing people and face images;

---Computer automatic face biometric recognition (one-to-many search);

---Computer automatic face biometric verification (one-to-one comparison):

The purpose of this document is to provide a face image format for face recognition applications that require the exchange of face image data:

These applications are used on various devices, including those that require data storage within limited resources, and in order to improve the accuracy of face recognition this document not only stipulates the data format, but also stipulates the scene constraints (light source, posture, expression, etc:), picture attributes (positioning, shooting equipment, etc:) focal length, etc:), digital image properties (image resolution, image size, etc:):

This document introduces the definition of some image types to meet the classification requirements of some applications, each of which is specific to a certain image type the type is specified: This part of the standard supports both binary encoding and XML encoding to meet the actual needs of users: use Binary encoding can be used in environments with limited transmission bandwidth or storage space; using XML encoding can meet the requirements of modern IT architecture;

Users can choose binary code or XML code for visual application:

Information Technology Biometric Data Interchange Format Part 5: Face Image Data

1 Scope

This document specifies:

--- Data format for recording, storage and transmission of face image information of one/multiple photos;

---Scene constraints when taking face images;

---The shooting method of face image;

---Storage format of digital face image;

---Conformity test method, test assertion and test program; including test assertion related to face image data format structure (according to Class A Level 1 described in GB/T 26237.1-2022), and those internal symbols of numeric types that may be included in each field Compatibility-related test assertions (according to Class A Level 2 described in GB/T 26237.1-2022), and semantic test assertions (according to Class A Class 3 described in GB/T 26237.1-2022):

This document is applicable to the recording, storage and transmission of face image data, and provides the best example of face image capture:

The compliance test methods specified in this document are not applicable to:

--- Other characteristic tests of biometric products or other types of tests of biometric products (such as acceptance, performance, robustness, security sex test),

--- Conformance testing of systems that do not generate data records that meet the requirements of this document:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references for documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document:

GB/T 1988 Seven-bit coded character set for information exchange in information technology (GB/T 1988-1998, eqvISO /IEC 646:

1991)

GB/T 5271.37-2021 Information Technology Vocabulary Part 37: Biometric Identification (ISO/IEC 2382-37:2017, MOD) GB/T 17235.1 Information Technology Digital Compression and Coding of Continuous Tone Still Images Part 1: Requirements and Guidelines (GB/T 17235.1-1998, idtISO /IEC 10918-1:1994) GB/T 17966 Binary floating-point arithmetic of microprocessor systems (GB/T 17966-2000, idtISO /IEC 559:1989, IDT) GB/T 26237.1-2022 Information Technology Biometric Data Interchange Format Part 1: Framework (ISO/IEC 19794-1:

2011, MOD)

Note: The quoted content of GB/T 26237.1-2022 is the same as ISO/IEC 19794-1:2011, ISO/IEC 19794-1:2011/Amd1:2013, ISO/IEC There is no technical difference in the referenced content of IEC 19794-1:2011/Amd2:2015:

GB/T 28826.2 Information technology public biometric identification exchange format framework - Part 2: Biometric identification registration authority operating procedures