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    CEN TS 17051-2017 Full body photography.pdf

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    CEN TS 17051-2017 Full body photography.pdf

    1、Full body photographyPD CEN/TS 17051:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 17051 May 2017 ICS 35.240.15 English Version Full body photography Photographie du corps entier Gan

    2、zkperfotografie This Technical Specification (CEN/TS) was approved by CEN on 6 February 2017 for provisional application. The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the ques

    3、tion whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standar

    4、ds in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Mac

    5、edonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALIS

    6、ATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 17051:2017 E National forewordThis Published Document is the UK implemen

    7、tation of CEN/TS 17051:2017.The UK participation in its preparation was entrusted to Technical Committee IST/44, Biometrics.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a

    8、 contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 95129 9ICS 35.240.15Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under t

    9、he authority of the Standards Policy and Strategy Committee on 30 June 2017.Amendments/corrigenda issued since publicationDate Text affectedPUBLISHED DOCUMENTPD CEN/TS 17051:2017TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 17051 May 2017 ICS 35.240.15 English Versio

    10、n Full body photography Photographie du corps entier Ganzkperfotografie This Technical Specification (CEN/TS) was approved by CEN on 6 February 2017 for provisional application. The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requ

    11、ested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form

    12、. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, De

    13、nmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN

    14、 COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 17051:2017 E PD

    15、CEN/TS 17051:2017CEN/TS 17051:2017 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 6 2 Normative reference 6 3 Terms and definitions . 6 4 Abbreviated terms 7 5 Conformance . 8 6 Data structures. 8 6.1 Body Tree concept 8 6.2 Camera images . 8 6.3 Metadata . 9 6.3.1 General 9 6.3.2

    16、Pose Angle Yaw . 9 6.3.3 Pose angle encoding 10 7 Recommendations for Full Body Photography Systems 11 7.1 Architecture . 11 7.2 Usability and accessibility. 11 7.3 Practical applications . 11 7.4 Photograph sets 12 7.4.1 General . 12 7.4.2 Gait recognition 12 7.4.3 Image recognition 14 8 Full body

    17、photography . 14 8.1 Full body image technical requirements . 14 8.1.1 General . 14 8.1.2 Example full body photographs 14 8.2 Full body photography session . 16 8.2.1 Typical workflow for full body photography session . 16 8.2.2 Full body photograph content requirements. 17 9 Photo studio recommend

    18、ations for full body photography . 17 9.1 General . 17 9.2 Recommended camera orientation . 18 9.3 Recommended positioning and distance between camera and subject 18 9.4 Recommended focusing settings 19 9.5 Recommended white balance settings . 19 9.6 Recommended backdrop design 19 9.6.1 General . 19

    19、 9.6.2 Example configurations for a photo studio. 20 10 Photography Use Cases 21 10.1 General . 21 10.2 Photographic System Baseline Use Cases 21 PD CEN/TS 17051:2017CEN/TS 17051:2017 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 6 2 Normative reference 6 3 Terms and definitions .

    20、 6 4 Abbreviated terms 7 5 Conformance . 8 6 Data structures. 8 6.1 Body Tree concept 8 6.2 Camera images . 8 6.3 Metadata . 9 6.3.1 General 9 6.3.2 Pose Angle Yaw . 9 6.3.3 Pose angle encoding 10 7 Recommendations for Full Body Photography Systems 11 7.1 Architecture . 11 7.2 Usability and accessib

    21、ility. 11 7.3 Practical applications . 11 7.4 Photograph sets 12 7.4.1 General . 12 7.4.2 Gait recognition 12 7.4.3 Image recognition 14 8 Full body photography . 14 8.1 Full body image technical requirements . 14 8.1.1 General . 14 8.1.2 Example full body photographs 14 8.2 Full body photography se

    22、ssion . 16 8.2.1 Typical workflow for full body photography session . 16 8.2.2 Full body photograph content requirements. 17 9 Photo studio recommendations for full body photography . 17 9.1 General . 17 9.2 Recommended camera orientation . 18 9.3 Recommended positioning and distance between camera

    23、and subject 18 9.4 Recommended focusing settings 19 9.5 Recommended white balance settings . 19 9.6 Recommended backdrop design 19 9.6.1 General . 19 9.6.2 Example configurations for a photo studio. 20 10 Photography Use Cases 21 10.1 General . 21 10.2 Photographic System Baseline Use Cases 21 CEN/T

    24、S 17051:2017 (E) 3 11 Image Acquisition Measurement Methods 23 11.1 General . 23 11.2 Exposure metering at various spots on a subject . 24 11.3 Standard Test Chart Setup . 24 11.3.1 The ISO 12233 Test Chart 25 11.3.2 Grey scale, colour checking and EN 61966-8 test charts 26 11.4 Measurement preparat

    25、ions and analysis 26 11.4.1 General . 26 11.4.2 Preparations . 27 11.4.3 Analysis 27 11.4.4 Camera image dynamic range checking . 28 11.4.5 Lighting checking 28 11.4.6 Background checking 28 12 Summary 29 Bibliography . 30 PD CEN/TS 17051:2017CEN/TS 17051:2017 (E) 4 European foreword This document (

    26、CEN/TS 17051:2017) has been prepared by Technical Committee CEN/TC 224 “Personal identification, electronic signature and cards and their related systems and operations”, the secretariat of which is held by AFNOR. Attention is drawn to the possibility that some of the elements of this document may b

    27、e the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bu

    28、lgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switz

    29、erland, Turkey and the United Kingdom. PD CEN/TS 17051:2017CEN/TS 17051:2017 (E) 4 European foreword This document (CEN/TS 17051:2017) has been prepared by Technical Committee CEN/TC 224 “Personal identification, electronic signature and cards and their related systems and operations”, the secretari

    30、at of which is held by AFNOR. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standar

    31、ds organisations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

    32、 Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. CEN/TS 17051:2017 (E) 5 Introduction Most countries around the world are provided with identification systems for law enforcement and border cont

    33、rol. Many of these systems are not limited to face recognition purposes. To be consistent in such deployments and processes, technical documents, guidelines and best practice recommendations are being developed by different groups. However, these documents are primarily focused on travel document sy

    34、stems and the technical and operational issues to be considered when planning and deploying such systems in Europe. Full body recognition is the biometric mode used as a secondary mode in addition to face recognition or for forensic purposes. Face recognition is the biometric mode suited to the prac

    35、ticalities of travel documents. There is little guidance covering the full body imaging for cross-border interoperability or law enforcement services. There is a need for guidance for the use of high quality digital cameras and video surveillance devices for full body photography. This Technical Spe

    36、cification is not restricted to body image data. For example, it may be possible to extract iris images in some scenarios where high resolution cameras are used or body silhouette data for gait recognition when low resolution cameras are in use. PD CEN/TS 17051:2017CEN/TS 17051:2017 (E) 6 1 Scope Th

    37、is Technical Specification is intended to provide a Full Body Image Format for pattern recognition services and applications requiring the exchange of full body image data. Its typical applications include: a) human examination of high resolution full body images; b) human verification of identity b

    38、ased on full body images; c) computer automated full body identification; d) computer automated full body verification. To enable applications on a wide variety of devices, including devices that have limited data storage, and to improve image recognition accuracy, ISO/IEC 19794 standards are follow

    39、ed regarding not only data format, but also scene constraints (lighting, pose, expression, etc.), photographic properties (positioning, camera focus, etc.), and digital image attributes (image resolution, image size, etc.). A specific biometric profile for cross-border interoperability is required f

    40、or full body photographs. Full body photography standardization is required to get good quality database images for identification and verification using video surveillance and other similar system generated images. At the moment, border guards take full body photographs using local practices for en

    41、rolment, verification, identification and watch list identification. ISO 22311:2012 10 specifies a common output file format that can be extracted from the video-surveillance contents collection systems to perform necessary processing. ISO/IEC 30137 8 specifies data formats for storing, recording an

    42、d transmitting biometric information acquired via a video surveillance system. The EN 62676 series 11 defines video surveillance systems for use in security applications. The purpose of this Technical Specification is to provide expert guidance (i.e. best practices) for the photography of full body,

    43、 especially when the resulting images are to be used for purposes of identification and verification, either by automated recognition systems or by human viewers. 2 Normative reference The following documents, in whole or in part, are normatively referenced in this document and are indispensable for

    44、 its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 61966-8, Multimedia systems and equipment - Colour measurement and management - Part 8: Multimedia colour scanners ISO

    45、12233, Photography Electronic still picture imaging Resolution and spatial frequency responses 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 biometric verification process of confirming a biometric claim through biometric comparison SOURCE:

    46、 ISO/IEC 2382-37 PD CEN/TS 17051:2017CEN/TS 17051:2017 (E) 6 1 Scope This Technical Specification is intended to provide a Full Body Image Format for pattern recognition services and applications requiring the exchange of full body image data. Its typical applications include: a) human examination o

    47、f high resolution full body images; b) human verification of identity based on full body images; c) computer automated full body identification; d) computer automated full body verification. To enable applications on a wide variety of devices, including devices that have limited data storage, and to

    48、 improve image recognition accuracy, ISO/IEC 19794 standards are followed regarding not only data format, but also scene constraints (lighting, pose, expression, etc.), photographic properties (positioning, camera focus, etc.), and digital image attributes (image resolution, image size, etc.). A spe

    49、cific biometric profile for cross-border interoperability is required for full body photographs. Full body photography standardization is required to get good quality database images for identification and verification using video surveillance and other similar system generated images. At the moment, border guards take full body photographs using local practices for enrolment, verification, identification and watch list identification. ISO 22311:2012 10 specifies a common output file format that can be extracted from the video-surveillance contents collec


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