ISO/IEC INTERNATIONAL STANDARD 19794-8 First edition 2006-10-01 Information technology Biometric data interchange formats - Part 8: Finger pattern skeletal data Technologies de Il'information Formats d'échange de donnees biometriques- Partie 8: Données des structures du squelette de I'empreinte Reference number ISO/IEC 19794-8:2006(E) ISo IEC @ISO/IEC2006 No r y IHS under ted without license from IHS Not for Resale ISO/IEC 19794-8:2006(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized 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. ?ISO/IEC2006 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO/IEC 2006 - All rights reserved ermittedwithoutlicense from IHS Not for Resale ISO/IEC 19794-8:2006(E) Contents Page Foreword iv Introduction. 1 2 Conformance....... 3 Normative references 4 Terms and definitions.. 5 Abbreviated terms 5 6 Determination of finger pattern skeletal data ... 6.1 Minutia .... 5 6.2 Encoding the skeleton ridge line by a direction code ..8 6.3 13 7 Finger pattern skeletal data record format ... 14 7.1 Introduction.... 7.2 Record organization .. 7.3 14 7.4 Single finger record format . 16 7.5 18 7.5.1 Common extended data fields .. 7.5.2 Ridge count data format.... 7.5.3 Core and delta data format. 21 7.5.4 Zonal quality data . 23 7.5.5 Sweat pore position data.. 24 7.5.6 Finger pattern skeleton structural data. 25 7.6 Pattern record format summary.... 26 8 Finger pattern skeletal data card format .. 28 8.1 Normal size finger pattern skeletal format.. 28 8.2 Compact size finger pattern skeletal format.. 28 8.3 Finger pattern skeletal data block .... 29 8.4 The x or y coordinate extension for compact card format 29 8.5 Usage of additional features for the card format.... 30 8.6 Comparison parameters and card capabilities ... 30 8.7 Pattern card format summary........... 31 9 CBEFF format owner and format types. 32 Annex A (informative) Examples for finger pattern skeletal data .. .33 A.1 Virtual continuation .. .34 A.2 High resolution mode ... .35 A.3 Bifurcation.. 36 A.4 Skeleton line neighbourhood index.... A.5 Quality map ... 39 Annex B (informative) Example data record... ..40 B.1 Data.. .40 B.2 Example data format diagrams.. 42 B.3 Raw data for the finger pattern skeletal record format.. 43 B.4 Raw data for the compact size finger pattern skeletal card format. .43 Bibliography... .44 CopyrightIntenationalOganzanstanardzation Allrightsreserved ii ted withoutlicense from IHS Not for Resale ISO/IEC 19794-8:2006(E) Foreword 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 in the development of International Standards through technical committees established bythe respectiveorganization to deal with particular fields of technical activity.IsO andIEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental