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GB/T 26237.5-2023 English PDF

GB/T 26237.5: Historical versions

Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 26237.5-2023RFQ ASK 3 days Information technology - Biometric data interchange formats - Part 5: Face image data Valid
GB/T 26237.5-2014RFQ ASK 3 days Information technology -- Biometric data interchange formats -- Part 5: Face image data Obsolete

Similar standards

GB 18030   GB/T 37036.2   GB/T 37036.1   GB/T 26237.13   GB/T 26237.14   GB/T 26237.11   

Basic data

Standard ID: GB/T 26237.5-2023 (GB/T26237.5-2023)
Description (Translated English): Information technology - Biometric data interchange formats - Part 5: Face image data
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L71
Classification of International Standard: 35.240.15
Word Count Estimation: 186,153
Date of Issue: 2023-05-23
Date of Implementation: 2023-12-01
Older Standard (superseded by this standard): GB/T 26237.5-2014
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

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


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 35:240:15 CCSL71 National Standards of People's Republic of China Replace GB/T 26237:5-2014 Information Technology Biometric Data Interchange Format Part 5: Face Image Data Part 5: Face image data (ISO /IEC 19794-5:2011, MOD) Released on 2023-05-23 2023-12-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

table of contents

Preface V Introduction VIII 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Abbreviations4 5 Compliance4 6 Face image data recording format 5 6:1 General 5 6:2 Data conventions 7 6:3 General header 8 6:4 Data Presentation File Header 9 6:5 Face Information Block 12 6:6 Marker point block 17 6:7 Image Information Block 23 6:8 Presenting data blocks 26 6:9 Image data blocks 27 6:10 Three-dimensional information blocks 27 6:11 Three-dimensional data blocks 34 7 Basic types of face images 37 7:1 Inheritance relationship requirements between basic types of face images 37 7:2 Image data encoding requirements for basic types of face images 37 7:3 Image data compression requirements for basic types of face images 37 7:4 Data format requirements for basic types of face images 37 8 Types of frontal face images 37 8:1 Inheritance Requirements 37 8:2 Scenario requirements 37 8:3 Imaging requirements for frontal face image types 39 8:4 Digitization requirements for frontal face image types 40 8:5 Format requirements for frontal face images 41 9 Fully Frontal Face Image Type 41 9:1 Inheritance Requirements for Fully Frontal Face Images 41 9:2 Scene Requirements for Fully Frontal Face Images 41 9:3 Imaging Requirements for Fully Frontal Face Images 41 9:4 Requirements for full frontal face image digitization 43 9:5 Format requirements for full front face image type 43 10 Labeling Frontal Face Image Type 43 10:1 Inheritance requirements 43 10:2 Digitization Requirements for Labeling Frontal Face Images 43 10:3 Format requirements for labeling frontal face images 45 11 Post-processing frontal face image types 45 11:1 Introduction 45 11:2 Inheritance requirements 45 11:3 Post-processing frontal face image format requirements 45 12 Basic types of 3D face images 46 12:1 Inheritance requirements 46 12:2 3D point map rendering of basic types of 3D images 46 12:3 3D vertex rendering of basic types of 3D images 46 13 Completely frontal face 3D image type 46 13:1 Inheritance requirements 46 13:2 Coordinate system types 46 13:3 Pose in three dimensions 46 13:4 Calibration Accuracy for Texture Projection 47 13:5 Requirements for the type of 3D image rendering of a fully frontal face using depth images 47 13:6 Requirements for rendering fully frontal 3D face images using 3D point maps 48 13:7 Requirements for using 3D vertices to render fully frontal 3D image types 48 14 Mark the type of 3D image of frontal face 48 14:1 Inheritance requirements 48 14:2 Requirements for Types of 3D Image Rendering Marked Frontal Faces Using Depth Images 48 14:3 The use of 3D point maps to present the requirements for marking the type of 3D image of the frontal face 48 14:4 Requirements for marking frontal face 3D image types using 3D vertex rendering 48 15 Registration Format Type ID 48 Appendix A (Normative) Compliance Test Method 50 A:1 Description 50 A:2 List of specifications 50 Appendix B (Informative) Best Practices for Face Images 97 B:1 Basic face image 97 B:2 Frontal image 97 B:3 Full Frontal Face Image 100 B:4 Labeling Frontal Face Images 107 B:5 Best practices for full frontal 3D image types 111 B:6 Best Practices for Labeling 3D Images of Frontal Faces 112 B:7 Summary of Mandatory Requirements and Best Practices for 3D Image Types 113 Appendix C (Informative) Conditions for Taking Photographs 115 C:1 Scope 115 C:2 Photography Recommendations 115 C:3 Printing guidelines 123 C:4 Scanning Instructions 124 C:5 Face image quality assessment software 125 C:6 Recommended form 127 C:7 Experimental data 131 C:8 Photographic Examples 132 Appendix D (Informative) Experimental Research 141 D:1 Experimental study on registration of frontal images for travel document specification and data analysis141 D:2 Experimental research on the effect of binocular distance and head posture on biological matching performance 146 Appendix E (Normative) Face Image Type 149 Appendix F (Normative) XML Schema Definition 151 Appendix G (Informative) XML Encoding Example 172 G:1 XML encoding example of face image record 172 G:2 Examples of Tools for XML Validation 174 References 175

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: This document is proposed and managed by the National Information Technology Standardization Technical Committee (SAC/TC28): This document was drafted by: Newland Digital Technology Co:, Ltd:, East China Branch of China Electronics Standardization Institute, Shanghai Shangtang Intelligent Technology Co:, Ltd:, Yuncong Technology Group Co:, Ltd:, Xiamen Ruiwei Information Technology Co:, Ltd:, China Electronics Technology Standardization Research Institute Research Institute, Xiamen University, Guangzhou Guangdian Yuntong Financial Electronics Co:, Ltd:, Jianxin Financial Technology Co:, Ltd:, Beijing Eyes Intelligent Technology Co:, Ltd: Co:, Ltd:, Lenovo Zhongtian Technology Co:, Ltd:, Hangzhou Hikvision Digital Technology Co:, Ltd:, Luoke Jiahua Technology Group Co:, Ltd: Company, the Third Research Institute of the Ministry of Public Security, Lu Shenshi Technology Co:, Ltd: in Hefei, Zhejiang Dahua Technology Co:, Ltd:, Fujian Xian Assistant Network Section Technology Co:, Ltd:, Beijing Jichuang North Technology Co:, Ltd:, HKUST Xunfei Co:, Ltd:, Zhejiang Yuantu Technology Co:, Ltd:, and the same Fangwei Technology Co:, Ltd:, Guangdong Zhongke Zhenheng Information Technology Co:, Ltd:, Jiangsu Wellman Technology Co:, Ltd:, Jiangxi Wuda Yangfan Technology Co:, Ltd:, China Shipbuilding Industry Information Technology Co:, Ltd:, Beijing Zhongke Aosen Data Technology Co:, Ltd:, Xiamen Meiya Pico Information Co:, Ltd: Co:, Ltd:, Guangzhou Institute of Industrial Intelligence, Shanghai Institute of Metrology and Testing Technology, Qingdao Hisense Network Technology Co:, Ltd:, Tianfu (Dongguan) Standard Technology Co:, Ltd:, Shenzhen Mingtu Innovation Technology Co:, Ltd:, Guangzhou Aixiang Technology Co:, Ltd:, Fuzhou University, Fuzhou Vocational Technology academy: The main drafters of this document: Cai Chunshui, Lin Lin, Zhong Chen, Wang Wenfeng, Li Lin, Chen Jianlong, Song Jiwei, Shi Chao, He Yifan, Jiang Hui, Li Jun, Cheng En, Zhao Tiesong, Xu Zheng, Gao Jian, Liu Qianying, Lang Junqi, Wang Junyu, Cai Dongjiao, Sun Jing, Chen Xin, Yang Chunlin, Leng Shuang, Wang Chunmao, Huang Zhilong, Cheng Yunfei, Hu Lei, Zhu Haitao, Hao Jingsong, Ma Wanzhong, Lin Xiuming, Yan Chenjia, Sun Rongrong, Yao Zhijiang, Cao Yang, Li Lianguo, Zhang Lisun, Zhang Jinfang, Yang Jingfeng, Cui Jin, Chen Weiqiang, Song Fangfang, Zhan Hongmei, Qiu Zixiang, Lin Jing, Lai Jinshan, Wang Cheng, Li Qingshun, Yang Sanguo, Li Junjie, Xiao Jinchao, Wang Wei, Wang Wu, Liu Yuexia, Chen Weiling: The release status of previous versions of this document and the documents it replaces are as follows: ---First published as GB/T 26237:5-2014 in:2014; --- This is the first revision:

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 ......
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