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General Process For Barcode Analysis
73
General Process For Barcode Analysis
The following flow chart is an overview of how the validator
performs the barcode analysis.
Figure 19. Barcode Analysis Flowchart
Edge Determination
Reflectance Minimum <=
Threshold percentage of Reflectance
Maximum
Min. Edge Contrast (worst pair) >=
Min. Edge Contrast Threshold
Symbol Contrast >= Symbol Contrast
Threshold
Grading Scale:
A: >= 70 %
B: >= 55 %
C: >= 40 %
D: >= 20 %
F: < 20 %
Modulation >= Modulation Threshold
Grading Scale:
A: >= 70 %
B: >= 60 %
C: >= 50 %
D: >= 40 %
F: < 40 %
Defects <= Defects Threshold
Grading Scale:
A: <= 15 %
B: <= 20 %
C: <= 25 %
D: <= 30 %
F: > 30 %
Decodeability >= Decodeability
Threshold
Grading Scale:
A: >= 62 %
B: >= 50 %
C: >= 37 %
D: >= 25 %
F: < 25 %
Percent Decode >= Percent Decode
Threshold
Overall Grade >= Overall Grade
Threshold
Grading Scale:
A: 3.5 to 4.0
B: 2.5 to 3.4
C: 1.5 to 2.4
D: 0.5 to 1.4
F: 0.0 to 0.4