Direct Part Marking Applications - Datalogic Compact 2D Reader Matrix-2000 Reference Manual

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8.4.7 Direct Part Marking Applications

Decoding Method: Direct Marking
For Data Matrix and QR code the Decoding Method parameter selects the decoding
algorithm according to the printing/marking technique used to create the symbol and on the
overall printing/marking quality. The Direct Marking selection improves the decode rate for
low quality Direct Part Mark codes and in general for Direct Part Mark codes with dot peening
type module shapes.
Washed out and Axial
Distortion
Background
Problems
Half moon effects
All the previous examples are successfully read selecting the Direct Marking Decoding
Method.
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MATRIX-2000™ REFERENCE MANUAL
Dot Peening On
Scratched Surface
Marked On Curved
Shiny Surface
Shiny surface,
noisy background
Low Contrast
Problem
Axial
distortion
Low contrast,
noisy background