ANSI INCITS ISO IEC 29109-8-2011 Information technology - Conformance testing methodology for biometric data interchange formats defined in ISO IEC 19794 - Part 8 Finger pattern sk.pdf

1、 INCITS/ISO/IEC 29109-8:2011 2013 ISO/IEC 29109-8:2011 Information technology Conformance testing methodology for biometric data interchange formats defined in ISO/IEC 19794 Part 8: Finger pattern skeletal data INCITS/ISO/IEC 29109-8:2011 2013 PDF disclaimer This PDF file may contain embedded typefa

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4、zed for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. Adopted by INCITS (InterNational Committee for Information Tec

5、hnology Standards) as an American National Standard. Date of ANSI Approval: 2/25/2013 Published by American National Standards Institute, 25 West 43rd Street, New York, New York 10036 Copyright 2013 by Information Technology Industry Council (ITI). All rights reserved. These materials are subject to

6、 copyright claims of International Standardization Organization (ISO), International Electrotechnical Commission (IEC), American National Standards Institute (ANSI), and Information Technology Industry Council (ITI). Not for resale. No part of this publication may be reproduced in any form, includin

7、g an electronic retrieval system, without the prior written permission of ITI. All requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW, Washington, DC 20005. Printed in the United States of America ii ITIC 2013 All rights reserved ISO/IEC 29109-8:2011(E) ISO/IEC 2011

8、All rights reserved iiiContents Page Foreword iv Introduction . v 1 Scope 1 2 Conformance . 1 3 Normative references 2 4 Terms and definitions . 2 5 Symbols and abbreviated terms 2 6 Conformance testing methodology . 2 6.1 Table of requirements in the base standard . 2 6.2 Table of test assertions 1

9、3 ISO/IEC 29109-8:2011(E) iv ISO/IEC 2011 All rights reservedForeword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate

10、 in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and

11、non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The ma

12、in task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies cast

13、ing a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 29109-8 was prepared by Joint Technical Committee ISO/IEC JTC 1, Informat

14、ion technology, Subcommittee SC 37, Biometrics. ISO/IEC 29109 consists of the following parts, under the general title Information technology Conformance testing methodology for biometric data interchange formats defined in ISO/IEC 19794: Part 1: Generalized conformance testing methodology Part 2: F

15、inger minutiae data Part 4: Finger image data Part 5: Face image data Part 6: Iris image data Part 7: Signature/sign time series data Part 8: Finger pattern skeletal data Part 9: Vascular image data Part 10: Hand geometry silhouette data Finger pattern spectral data, signature/sign processed dynamic

16、 data, voice data and DNA data will form the subjects of future parts. ISO/IEC 29109-8:2011(E) ISO/IEC 2011 All rights reserved vIntroduction ISO/IEC 19794-8:2006 specifies a data record interchange format for exchange of finger pattern skeletal data among systems within a Common Biometric Exchange

17、Formats Framework (CBEFF) data structure. The data stored in a finger pattern skeletal data record often contains the metadata storing the subject-specific, the image-specific as well as the technology being used. This part of ISO/IEC 29109 establishes tests for checking the correctness of the binar

18、y record. The objective of ISO/IEC 19794-8:2006 cannot be completely achieved until biometric products can be tested to determine whether they conform to those specifications. Conforming implementations are a necessary prerequisite for achieving interoperability among implementations; therefore ther

19、e is a need for a standardized conformance testing methodology, test assertions, and test procedures as applicable to specific modalities addressed by each part of ISO/IEC 19794. The test assertions will cover as much as practical of the ISO/IEC 19794 requirements (covering the most critical feature

20、s), so that the conformity results produced by the test suites will reflect the real degree of conformity of the implementations to ISO/IEC 19794 Data Interchange Format records. This is the motivation for the development of this conformance testing methodology. This part of ISO/IEC 29109 supports t

21、hose applications that require use of finger pattern skeletal data according to ISO/IEC 19794-8:2006. It defines a testing methodology to ensure conformance of a vendors application or service to the base ISO/IEC 19794-8:2006 specification. Thus this part of ISO/IEC 29109 is intended to: establish e

22、lements of the conformance testing met hodology framework that are specific to the finger pattern skeletal-based data record requirements of ISO/IEC 19794-8:2006 conformance testing, define requirements and guidelines for specifying confor mance test suites and related test methods for measuring con

23、formity of products and services to the finger pattern skeletal data record requirements of ISO/IEC 19794-8:2006, and define testing and reporting procedures to be follo wed before, during, and after conformance testing. This part of ISO/IEC 29109 is applicable to the development and use of conformi

24、ty test method specifications, conformity test suites for ISO/IEC 19794-8:2006 records, and conformance testing programs for ISO/IEC 19794-8:2006 conformant products. It is intended primarily for use by testing organizations, but may be applied by developers and users of test method specifications a

25、nd test method implementations. The table of test assertions (Clause 6.2) specifies levels 1, 2 or 3 testing for the conformance requirements of ISO/IEC 19794-8:2006. Conformance testing of CBEFF requirements will be out of the scope of ISO/IEC 29109. INTERNATIONAL STANDARD ISO/IEC 29109-8:2011(E) I

26、SO/IEC 2011 All rights reserved 1Information technology Conformance testing methodology for biometric data interchange formats defined in ISO/IEC 19794 Part 8: Finger pattern skeletal data 1 Scope This part of ISO/IEC 29109 specifies elements of conformance testing methodology, test assertions, and

27、test procedures as applicable to ISO/IEC 19794-8:2006. This part of ISO/IEC 29109 establishes test assertions of the struct ure of the finger pattern skeletal data format as specified in ISO/IEC 19794-8:2006 (Type A Level 1 as defined in ISO/IEC 29109-1:2009), test asssertions of internal consistenc

28、y by checking the types of values that may be contained within each field (Type A Level 2 as defined in ISO/IEC 29109-1:2009). This part of ISO/IEC 29109 does not establish test of conformance of CBEFF stru ctures required by ISO/IEC 19794-8:2006, test of consistency with input biometric data record

29、 (Level 3), test of other characteri stics of biometric products or other types of testing of biometric products (e.g. acceptance, performance, robustness, security), test of conformance of systems that do not produce ISO/IEC 19794-8:2006 records. 2 Conformance Biometric data interchange format conf

30、ormance tests conform to this part of ISO/IEC 29109 if they satisfy all of the normative requirements related to Clause 6. Specifically, they shall use the test methodology specified in Clauses 6, 7 and 8 of ISO/IEC 29109-1:2009, and all Level 1 and Level 2 tests shall use the assertions defined in

31、Table 2 of Clause 6 in this International Standard. Implementations of ISO/IEC 19794-8:2006 tested according to the methodology specified shall be able to claim conformance only to those Biometric Data Record (BDR) requirements specified in ISO/IEC 19794-8:2006 that are tested by the test methods es

32、tablished by this methodology. Implementations of ISO/IEC 19794-8:2006 do not necessarily need to conform to all possible aspects of ISO/IEC 19794-8:2006, but only to those ISO/IEC 19794-8:2006 requirements that are claimed to be supported by the implementation in an ICS, filled out in accordance wi

33、th Clause 8 of ISO/IEC 29109-1:2009 and Table 1 of this part of ISO/IEC 29109. ISO/IEC 29109-8:2011(E) 2 ISO/IEC 2011 All rights reserved3 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited appl

34、ies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 19794-8:2006, Information technology Biometric data interchange formats Part 8: Finger pattern skeletal data ISO/IEC 29109-1:2009, Information technology Conformance testing methodo

35、logy for biometric data interchange formats defined in ISO/IEC 19794 Part 1: Generalized conformance testing methodology 4 Terms and definitions For the purposes of this document, the terms and definitions given in ISO/IEC 29109-1 apply. 5 Symbols and abbreviated terms For the purposes of this docum

36、ent, the symbols and abbreviated terms given in ISO/IEC 29109-1:2009 apply. 6 Conformance testing methodology The testing methodology specified in Clauses 6, 7 and 8 of ISO/IEC 29109-1:2009 shall apply. The content of the tables below is based on the conformance testing methodology outlined in ISO/I

37、EC 29109-1:2009 and shall only be used in the context of that testing methodology. 6.1 Table of requirements in the base standard Under subformat applicability the columns labelled R, N and C indicate Finger pattern skeletal data record format, Normal size finger pattern skeletal format and Compact

38、size finger pattern skeletal format. ISO/IEC 29109-8:2011(E) ISO/IEC 2011 All rights reserved 3Table 1 Requirements of the Base Standard (ISO/IEC 19794-8:2006) Requirement Identifier Reference in Base Standard Requirement Summary Level Status Sub-format / Format Type Applicability IUT Support Suppor

39、ted Range Test Result R N C R-1 6.1.1 Minutiae are points located at the places in the fingerprint image where friction ridges end or split into two ridges. Each minutia point has a “type” associated with it. There are two major types of minutia: a “ridge ending” represented by the 2-bit value 01 an

40、d a “ridge bifurcation” or split point represented by 2-bit value 10. 1 M Y Y Y R-2 6.1.2 The coordinate system used to express the position of the minutiae points of a fingerprint shall be a Cartesian coordinate system. For the skeletal pattern card format, the resolution of the x and y coordinates

41、 of the minutia shall be in metric units. The position of the minutia for a ridge ending shall be defined as the coordinates of the skeleton point with only one neighbour pixel belonging to the skeleton. The position of the minutia for a ridge bifurcation shall be defined as the point of forking of

42、the skeleton of the ridge. The position of a virtual ending shall be defined like the position of a real ridge ending. 3C O-1 Y Y Y N/A N/A R-3 6.1.3 The direction of the lines starting or ending at a point with more than three arms (trifurcation, etc.) shall be defined like the direction of a real

43、ridge ending.The direction of a virtual ending shall be defined like the direction of a real ridge ending. 3C O-1 Y Y Y N/A N/A R-4 6.2.2 To keep the encoding size small a line shall start with a real minutia (type 01 or 10) if possible. No assumption shall be made about the order of the line encodi

44、ngs in the record. The skeleton shall be encoded only for image areas where the ridge lines are displayed with a sufficient quality. The reconstructed ridge lines shall describe the fingerprint image in ridge position and structure. The reconstructed skeleton line polygon element shall be inside the

45、 area of the ridge it is describing for most part of its length. 3C O-1 Y Y Y N/A N/A ISO/IEC 29109-8:2011(E) 4 ISO/IEC 2011 All rights reservedRequirement Identifier Reference in Base Standard Requirement Summary Level Status Sub-format / Format Type Applicability IUT Support Supported Range Test R

46、esult The reconstructed skeleton line shall never be inside the area of any other ridge but the one it is describing. The reconstructed skeleton line shall preserve the topology of the ridges. R-5 6.2.3 In order to minimize integration of digitalisation error, each starting point must be computed wi

47、th relatively high accuracy, i.e. its resolution shall be at least 100 times finer than the spatial resolution of the minutiae. 3C O-1 Y Y Y N/A N/A R-6 6.2.3 If the direction change of the skeleton line cannot be described by a direction element, the line encoding shall be interrupted by a “virtual

48、 continuation” and a new line encoding shall begin with the same point without repeating the minutia data. 3C O-1 Y Y Y N/A N/A R-7 6.3.2 It is not usefull to list a neighourhood relation twice, any of the other indices shall be different i.e. Ai-1Ai . 3A M Y Y Y R-8 7.3, Table 5 There shall be one

49、and only one record header for the finger pattern skeletal data record. The record header will contain information describing the identity and characteristics of the device that generated the data. 3A M Y N N R-9 7.3.1, Table 5 The finger pattern skeletal data record shall begin with a format identifier to be recorded in four bytes. For this part of ISO/IEC 19794, it shall consist of the three AS