Datalogic Matrix 300 Reference Manual page 137

SOFTWARE CONFIGURATION
Image Filter
Sets the filter to be applied to the image before being processed. This parameter can be
used to successfully decode particular ink-spread printed codes (ex. Direct part mark codes).
A different filter can be applied to each Image Acquisition Setting.
The Erode Filter enlarges the image dark zones to increase readability.
Before - No Read
The Dilate Filter enlarges the image white zones to increase readability.
Before - No Read
The Close filter eliminates dark areas (defects) in the white zones of the image.
Before - No Read
After - Readable
Erode
After - Readable
Dilate
After - Readable
Close
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