Image processing
4.2 Code verification
SIMATIC MV420 / SIMATIC MV440
52 Operating Instructions, 04/2013, A5E02371045-06
4.2.4.2 ISO/IEC 16022
This standard is based on data for printing data matrix codes with black ink on white paper
and can normally only be used in such scenarios.
Note
As the second edition of the ISO/IEC 16022 standard, the ISO/IEC 16022:2006 document
refers to the ISO/IEC 15415 standard as a guideline for print quality.
Quality parameters
● Axial non-uniformity:
Difference between the height and width relative to the rows and columns.
● Print growth:
Positive or negative size ratio of the printed cells relative to the ideal grid.
● Contrast:
Difference between the average reflectance of the lightest pixels and the darkest pixels.
● Unused error correction:
Proportion of error correction information not used for correction of the read result.
Assignment of the numeric grade of ISO/IEC 16022 to the quality levels
Grade (abbreviation) 4 3 2 1 0 Comment
Axial non-uniformity (AN_) ≤6% ≤8% ≤10% ≤12% >12%
Print growth (PG_) ≤15% ≤21% ≤26% ≤30% >30% Absolute value for x and y
Contrast (SC_) ≥70% ≥55% ≥40% ≥20% <20%
Unused error correction (UEC) ≥62% ≥50% ≥37% ≥25% <25%
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