1、American National StandardDeveloped byfor Information Technology Finger Image BasedData Interchange FormatINCITS 381-2009INCITS 381-2009Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from I
2、HS-,-,-Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-INCITS 381-2009Revision ofINCITS 381-2004American National Standardfor Information Technology Finger Image BasedData Inter
3、change FormatSecretariatInformation Technology Industry CouncilApproved September 14, 2009 American National Standards Institute, Inc.AbstractThis standard specifies an interchange format for the exchange of image-based fingerprint and palm printrecognition data. It defines the content, format, and
4、units of measurement for such information. This stan-dard is intended for those identification and verification applications that require the use of raw or pro-cessed image data containing detailed pixel information.Copyright American National Standards Institute Provided by IHS under license with A
5、NSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Approval of an American National Standard requires review by ANSI that therequirements for due process, consensus, and other criteria for approval havebeen met by the standards developer.Consensus is established w
6、hen, in the judgement of the ANSI Board ofStandards Review, substantial agreement has been reached by directly andmaterially affected interests. Substantial agreement means much more thana simple majority, but not necessarily unanimity. Consensus requires that allviews and objections be considered,
7、and that a concerted effort be madetowards their resolution.The use of American National Standards is completely voluntary; theirexistence does not in any respect preclude anyone, whether he has approvedthe standards or not, from manufacturing, marketing, purchasing, or usingproducts, processes, or
8、procedures not conforming to the standards.The American National Standards Institute does not develop standards andwill in no circumstances give an interpretation of any American NationalStandard. Moreover, no person shall have the right or authority to issue aninterpretation of an American National
9、 Standard in the name of the AmericanNational Standards Institute. Requests for interpretations should beaddressed to the secretariat or sponsor whose name appears on the titlepage of this standard.CAUTION NOTICE: This American National Standard may be revised orwithdrawn at any time. The procedures
10、 of the American National StandardsInstitute require that action be taken periodically to reaffirm, revise, orwithdraw this standard. Purchasers of American National Standards mayreceive current information on all standards by calling or writing the AmericanNational Standards Institute.American Nati
11、onal StandardPublished byAmerican National Standards Institute, Inc.25 West 43rd Street, New York, NY 10036Copyright 2009 by Information Technology Industry Council (ITI)All rights reserved.No part of this publication may be reproduced in anyform, in an electronic retrieval system or otherwise,witho
12、ut prior written permission of ITI, 1101 K Street NW, Suite 610, Washington, DC 20005. Printed in the United States of AmericaCAUTION: The developers of this standard have requested that holders of patents that may berequired for the implementation of the standard disclose such patents to the publis
13、her. However,neither the developers nor the publisher have undertaken a patent search in order to identifywhich, if any, patents may apply to this standard. As of the date of publication of this standardand following calls for the identification of patents that may be required for the implementation
14、 ofthe standard, no such claims have been made. No further patent search is conducted by the de-veloper or publisher in respect to any standard it processes. No representation is made or impliedthat licenses are not required to avoid infringement in the use of this standard.Copyright American Nation
15、al Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-iContentsPageForeword .ivIntroduction .ix1 Scope. 12 Conformance . 13 Normative references. 14 Terms and definitions. 25 Abbreviated terms 36 Data convers
16、ions . 46.1 Byte and bit ordering 46.2 Scan sequence 47 Image acquisition requirements. 47.1 Overview 47.2 Acquisition levels . 57.2.1 Scan resolution 57.2.2 Pixel depth . 57.2.3 Dynamic range. 67.3 Pixel aspect ratio 67.4 Grayscale data. 67.5 Image resolution 67.6 Fingerprint image location 68 Fing
17、er image record format 78.1 Single-subject records . 78.2 CBEFF format owner and type codes 78.3 Record Structure 78.3.1 General record header. 78.3.1.1 Overview 78.3.1.2 Format identifier. 78.3.1.3 Version number 88.3.1.4 Record length. 88.3.1.5 CBEFF Product identifier . 88.3.1.6 Capture device ID
18、 98.3.1.7 Image acquisition level. 98.3.1.8 Number of finger/palm image views. 98.3.1.9 Image Compression algorithm. 98.3.1.10 Reserved 98.3.2 Finger record header . 108.3.2.1 Overview 108.3.2.2 Length of finger/palm data block 108.3.2.3 Finger/palm position. 108.3.2.4 Count of views . 11Copyright A
19、merican National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-iiPage8.3.2.5 View number 118.3.2.6 Finger/Palm image quality . 118.3.2.7 Impression type . 118.3.2.8 Horizontal line length . 118.3.2.9 Ver
20、tical line length . 118.3.2.10 Pixel despth . 148.3.2.11 Scale units . 148.3.2.12 Scan resolution (horizontal) . 148.3.2.13 Scan resolution (vertical) . 148.3.2.14 Image resolution (horizontal) . 148.3.2.15 Image resolution (vertical) . 148.3.2.16 Reserved . 148.3.2.17 Image data length 158.3.2.18 F
21、inger/Palm image data. 158.4 Extended data 158.4.1 Extended data block function. 158.4.2 Extended data block structure . 158.4.2.1 Extended data block format . 158.4.2.2 Type identification code . 158.4.2.3 Length of data 168.4.2.4 Data section. 168.4.3 Segmentation data format . 168.4.3.1 Segment a
22、lgorithm and owner ID 168.4.3.2 Segmentation quality score . 168.4.3.3 Finger quality algorithm and owner ID . 168.4.3.4 Number of segments . 168.4.3.5 Finger segment data 178.4.3.5.1 Finger position . 178.4.3.5.2 Finger quality . 178.4.3.5.3 Number of coordinate pairs . 188.4.3.5.3.1 X-coordinate 1
23、88.4.3.5.3.2 Y coordinate. 188.4.4 Annotation data format 188.4.4.1 Number of annotations 188.4.4.2 Finger position . 198.4.4.3 Annotation Code 198.4.5 Comment data format 198.4.6 Vensor-defined data format . 19AnnexesA ISFIS image quality specifications . 20B Finger image data record example 42C Bi
24、bliography . 44Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-iiiPageFigure1 Order of scanned lines . 4Tables1 Image acquisition setting levels . 52 General record header . 83
25、Compression algorithm codes 104 Finger image header record. 125 Finger position codes, areas, and maximum dimensions 136 Palm codes, areas, and maximum dimensions 137 Finger and palm impression types . 148 Extended Data Area Type codes . 159 Segmentation data . 1710 Annotation data 18Copyright Ameri
26、can National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ivForeword (This foreword is not part of American National Standard INCITS 381-2009.)This standard specifies an interchange format for the excha
27、nge of image-based fin-gerprint and palm print recognition data. It defines the content, format, and units ofmeasurement for such information. This standard is intended for those identificationand verification applications that require the use of raw or processed image data con-taining detailed pixe
28、l information. This document contains three annexes. Annex A, which is considered part of thisstandard, is normative and describes image quality requirements specified by the im-age acquisition settings. Annex B is an informative annex. It provides an example ofthe use of this standard and is not co
29、nsidered part of this standard. Annex C, the Bib-liography, is also informative and is not considered part of this standard. INCITS (The International Committee for Information Technology Standards) is theANSI recognized Standards Development Organization for information technologywithin the United
30、States of America. Members of INCITS are drawn from Govern-ment, Corporations, Academia and other organizations with a material interest in thework of INCITS and its Technical Committees. INCITS does not restrict membershipand attracts participants in its technical work from 13 different countries,
31、and oper-ates under the rules of the American National Standards Institute. In the field of Biometrics, INCITS has established the Technical Committee M1. Stan-dards developed by this Technical Committee have reached consensus throughoutthe development process and have been thoroughly reviewed throu
32、gh several PublicReview processes. In addition, this American National Standard has been approvedby the INCITS Executive Board and ANSI Board of Standards Review for Publicationas an ANSI-approved INCITS Standard.Requests for interpretation, suggestions for improvement or addenda, or defect re-ports
33、 are welcome. They should be sent to InterNational Committee for InformationTechnology Standards (INCITS), ITI, 1101 K Street, NW, Suite 610, Washington, DC20005. This standard was processed and approved for submittal to ANSI by INCITS. Com-mittee approval of this standard does not necessarily imply
34、 that all committee mem-bers voted for its approval. At the time it approved this standard, INCITS had thefollowing members: Don Wright, ChairJennifer Garner, SecretaryOrganization Represented Name of RepresentativeAdobe Systems, Inc. Scott FosheeSteve Zilles (Alt.)AIM Global, Inc. Dan MullenCharles
35、 Biss (Alt.)Apple Computer, Inc. Kwok LauHelene Workman (Alt.)David Singer (Alt.)Distributed Managment Task Force . Tony DiCenzoJeff Hilland (Alt.)Winston Bumpus (Alt.)Electronic Industries Alliance . Edward Mikoski, Jr.EMC Corporation Gary RobinsonFarance, Inc. Frank FaranceTimothy Schoechle (Alt.)
36、Google Zaheda BhoratRobert Tai (Alt.)Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-vOrganization Represented Name of RepresentativeGS1 US .Ray DelnickiFrank Sharkey (Alt.)Jame
37、s Chronowski (Alt.)Mary Wilson (Alt.)Hewlett-Packard Company .Karen HigginbottomPaul Jeran (Alt.)IBM Corporation Ronald F. SillettiRobert Weir (Alt.)IEEE Judith GormanTerry DeCourcelle (Alt.)Bill Ash (Alt.)Jodie Haasz (Alt.)Bob Labelle (Alt.)Susan Tatiner (Alt.)Intel .Philip WennblomDave Thewlis (Al
38、t.)Grace Wei (Alt.)Steven Balogh (Alt.)Lexmark InternationalDon WrightDwight Lewis (Alt.)Paul Menard (Alt.)Microsoft CorporationJim HughesDave Welsh (Alt.)Mark Ryland (Alt.)National Institute of Standards also referred to as monochrome or black and white. 4.7 image resolution the number of pixels pe
39、r unit distance in the interchanged image NOTE This may be the result of processing a captured image. The original captured scanned image may have been subsampled, scaled, interpolated downward, or otherwise processed to produce a form for representing the ridge and valley structure areas of the fin
40、gerprint. 4.8 live capture the process of capturing a biometric sample through an interaction between a subject and a biometric system. Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from I
41、HS-,-,-INCITS 381-2009 3 4.9 palm the friction ridge skin on the side and underside of the hand 4.10 pixel a picture element located on an n by m matrix of picture elements, where n is the horizontal component and m is the vertical component. 4.11 plain fingerprint image image captured from a finger
42、 placed on a platen without any rolling movement the center portion of a fingerprint image area 4.12 rolled fingerprint image image area captured that is located between the two edges of the fingernail. Acquired using a rolling motion from one edge of the fingernail to the other. 4.13 scan resolutio
43、n the number of pixels per unit distance used by a sensor or scanning device to initially capture a fingerprint or palmprint image 4.14 subject the person whose biometric data is being collected 4.15 transaction a command, message, or input record that explicitly or implicitly calls for a processing
44、 action. Information contained in a transaction shall be applicable to a single subject. 4.16 valley the area surrounding a friction ridge, which does not make contact with an incident surface under normal touch; the area of the finger image area between two friction ridges. 5 Abbreviated terms 5.1
45、ppcm Abbreviation for pixels per centimeter. 5.2 ppi Abbreviation for pixels per inch. 5.3 ppmm Abbreviation for pixels per millimeter Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IH
46、S-,-,-INCITS 381-2009 4 6 Data conventions 6.1 Byte and bit ordering Each item of information, field, or logical record shall contain one or more bytes of data. Within a record all multibyte quantities are represented in Big-Endian format. That is, the more significant bytes of any multibyte quantit
47、y are stored at lower addresses in memory than less significant bytes. The order for transmission shall also be the most significant byte first and least significant byte last. Within a byte, the order of transmission shall be the most significant bit first and the least significant bit last. All nu
48、meric values are fixed-length unsigned integer quantities. 6.2 Scan sequence It is not the purpose of this standard to specify the orientation of the finger (or palm), the method of scanning, or the order of scanning used to capture the image. However, each image as presented in accordance with this format standard shall appear to have been captured in an upright position and approximately centered horizontally in the field of view. The recorded image data shall appear to be the result of a scanning of a conventional inked impression of a fingerprint. The scanning sequence (and recorded
