ISO/IEC INTERNATIONAL STANDARD 15415 Second edition 2011-12-15 Information technology Automatic identification and data capture techniques Bar code symbol print quality test specification Two- dimensional symbols Technologies de l'information-Techniques automatiques d'identification et de capture des donnees - Spécification de test de qualite d'impression des symboles de code a barres- Symboles bidimensionnels Reference number ISO/IEC 15415:2011(E) IEC ISO @ISO/IEC2011 THS unde nse from IHS Not for Resale ISO/IEC 15415:2011(E) COPYRIGHTPROTECTEDDOCUMENT ?ISO/IEC2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO at the address below or isO's memberbody inthe 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 2011-All rights reserved itted without license from IHS Not for Resale ISO/IEC 15415:2011(E) Contents Page Foreword Introduction. .vi 1 Scope 2 Normative references.. 3 Terms and definitions 4 Symbols and abbreviated terms ... 5 Quality grading . 5.1 General. 5.2 Expression of quality grades. 5.3 Overall Symbol Grade.... 5.4 Reporting of symbol grade. 6 Measurement methodology for two-dimensional multi-row bar code symbols.. 6.1 General.. 6.2 Symbologies with cross-row scanning ability ... 6.2.1 Basis of grading .... 6.2.2 Grade based on analysis of scan reflectance profile.. 6.2.3 Grade based on Codeword Yield 6.2.4 Grade based on unused error correction .... .8 6.2.5 Grade based on codeword print quality... 6.2.6 Overall symbol grade.... 6.3 Symbologies requiring row-by-row scanning ...... 11 7 Measurement methodology for two-dimensional matrix symbols. 11 7.1 7.2 Obtaining the test images... 12 7.2.1 Measurement conditions ... 12 7.2.2 Raw image...... 12 7.2.3 Reference grey-scale image.. 12 7.2.4 Binarised image... 13 7.3 Reference reflectivity measurements 13 7.3.1 7.3.2 Light source. 13 7.3.3 Effective resolution and measuring aperture.... 7.3.4 Optical geometry .... 14 7.3.5 Inspection area .. 7.4 Number of scans, 16 7.5 Basis of scan grading ... 7.6 Grading procedure .... 7.7 Additionalreflectancecheckoverextendedarea. 17 7.8 Image assessment parameters and grading .. 7.8.1 Useofreferencedecodealgorithm.. 17 7.8.2 7.8.3 Symbol Contrast.. 18 7.8.4 Modulation and related measurements.... 18 7.8.5 Fixed Pattern Damage.... 7.8.6 Axial Nonuniformity . 21 7.8.7 Grid Nonuniformity. 22 7.8.8 Unused error correctior 23 7.8.9 Additional grading parameters CopyrightInternatinal Oorganizatinfr standardizatin All rights reserved ii se from IHS Not for Resale