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BVS ID-M1280xF1-xx-xxx
For PDF417 the form is a (bcdefg) and has the following meaning:
Index
Characteristic
a
Overall quality
b
Start/Stop pattern
c
Codeword yield
d
Unused error correction
e
Modulation
f
Decodability
g
Defects
Structure of the quality result string of 2D code types borrowing from ISO/IEC TR 29158
The string with the format a (bcdefghij) indicates the determined quality which has the following meaning:
Index
Characteristic
a
Overall quality
b
Cell contrast
c
Cell modulation
d
Fixed pattern damage
e
Decode
Description
The minimum or worst quality of all characteristics.
The quality of the start and stop patterns.
Amount of Codewords that are decoded correctly.
Measures and grades the reading safety margin
that error correction provides.
The measure of the amplitude between two
symbols specifies how reliable they can be
distinguished.
Describes, how far the true width of the moduls
differ from the standard of the code types.
Indicates, to what extent irregularities or
disturbances occur in individual symbol modules.
Description
The minimum or worst quality of all characteristics.
Describes the difference between the highest and the
lowest reflectance values of the gray value profile.
Calculation of this characteristic differs from
calcualation of "Contrast" of ISO/IEC 15415.
The measure of the amplitude between two symbols
specifies how reliable they can be distinguished.
Calculation of this characteristic differs from
calcualation of "Modulation" of ISO/IEC 15415.
Measures and grades any damage to the finder pattern
and quiet zone in the symbol.
Binary characteristic of the readability. If it can be
decoded, then it will be A otherwise F. In this
implementation it will always be A.
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