International IEC ISO Standard IS0/IEC 29794-1 Third edition Information technology - 2024-05 Biometric sample quality - Part 1: Framework Technologies de I'information - Qualité d'échantillon biométrique- Partie 1: Cadre Reference number ISO/IEC 29794-1:2024(en) ISO/IEC 2024 @IS0/IEC2024 be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland @IS0/IEC 2024- All rights reserved i Contents Page Foreword. .iv Introduction .V Scope 1 .1 2 Normative references .1 3 Terms and definitions. ..1 4 Abbreviated terms .4 5 Conformance. 6 Biometric sample quality criteria 6.1 Reference model. .4 6.2 Quality aspects: character, fidelity, utility .5 6.3 Use cases of data quality measures .6 6.3.1 General. 6 6.3.2 Real-time quality assessment .6 6.3.3 Use in different applications .6 Use as a survey statistic. ..7 6.3.4 6.3.5 Accumulation of relevant statistics .7 6.3.6 Sample-based reference database improvement ..7 ..8 6.3.7 Quality-based conditional processing 6.3.8 Quality-directed fusion. 8 6.3.9 Interchange of quality measures by disparate systems ..8 6.3.10 Workload reduction with quality scores .8 6.3.11 Selection of the best of a series of biometric samples. ..8 Data interchange format field definition 7 8 7.1 Abstract description. ..8 7.1.1 ..8 Overview 7.1.2 Quality assessment algorithm identifier block .9 ..9 7.1.3 Quality measure (quality score or quality component) or error. 7.2 XML encoding. .11 7.3 Tagged binary encoding .11 8 Exchange of quality assessment algorithm results .12 9 ..12 Quality score normalization. .13 10 Pairwise quality 11 Evaluation .14 ..14 11.1 General ..14 11.2 False non-match error versus discard method .15 11.3 Falsematcherrorversusdiscardmethod 11.4 DET versus discard method .16 .17 11.5 Sample acceptance or discard rate. Annex A (informative) Example of encoding a biometric sample quality block .18 Annex B (informative) Example of standardized exchange of quality assessment algorithm ..19 results. Annex C (informative) Procedures for aggregation of utility-based quality scores for sample- .21 based systems. Annex D (informative) Example code for computing utility-prediction performance metrics ..24 Bibliography. .26 @ IS0/IEC 2024 - All rights reserved iii