What is iec code

ISO / IEC 15416 - Review elements and their meaning


1 DEC (decode)

Assessment of whether decoding is possible during the reading process.
If the quality of the parameter is poor, the barcode may not be recognized as such.

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2 EDGE (Edge Determination)

Assessment of whether the number of lines read (transitions where the contrast changes between light and dark) corresponds to the expected number of edges.
As can be seen in the picture on the right, additional white lines, such as scratches or imperfections, can reduce the quality.

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3 SC (Contrast symbol)

Evaluation of the reflection difference of the light intensity between the highest reflection value (Rmax) and the lowest reflection value (Rmin) in the code area.
If the contrast is not sufficient overall, the quality is also poor.

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4 MINR (minimum reflectance)

This is the lowest reflection of the light intensity within the scan curve.
An evaluation is carried out to determine whether the lowest reflection value (Rmin) corresponds to half or less of the highest reflection value (Rmax).
If the lines are relatively light and thus the difference in reflection is small, the quality is low.

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5 MINE (Minimum Edge Contrast)

Evaluation of whether the minimum reflection difference between a gap / empty area (including quiet zones) and the neighboring lines is 15% or less.
If some of the lines are narrow or parts of the background are dirty, the quality is poor.

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6 MOD (modulation)

Evaluation of the relationship between the minimum edge contrast and symbol contrast.
If some of the lines are narrow or parts of the background are dirty, the quality is poor.

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7 QZ (Quiet Zone)

Evaluation of whether the width of the quiet zone corresponds to the norm.

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8 DCD (decodability)

The decodability is defined for each code type. This will determine the amount of error between the ideal bar width pattern and the actual bar width pattern.
If bars or spaces / spaces are too wide or too narrow, the quality is poor.

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9 DEF (Defects)

Evaluation of color differences within a line or a gap / space.
If bars or gaps / spaces are faulty or dirty, the quality is poor.

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