ISO/IEC 15415:2011

• specifies two methodologies for the measurement of specific attributes of two-dimensional bar code symbols, one of these being applicable to multi-row bar code symbologies and the other to two-dimensional matrix symbologies;
• defines methods for evaluating and grading these measurements and deriving an overall assessment of symbol quality;
• gives information on possible causes of deviation from optimum grades to assist users in taking appropriate corrective action.

ISO/IEC 15415:2011 applies to those two-dimensional symbologies for which a reference decode algorithm has been defined, but its methodologies can be applied partially or wholly to other similar symbologies.

While ISO/IEC 15415:2011 can be applied to direct part marks, it is possible that better correlation between measurement results and scanning performance will be obtained with ISO/IEC TR 29158 in combination with ISO/IEC 15415:2011.