Omron V440-F, User Manual

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2 Quick Start
2-22 V440-F C-Mount Code Reader User Manual
The Enhance drop-down menu at the bottom of the Decode area allows you to select the pre-processing
method for codes within an image using morphology.
Note: When running in normal mode, the image pre-processing enhancement function applies to all
codes within the image. When using the Configuration Database function, pre-processing only affects
codes within a specific region of interest ROI or window of interest WOI.
Grow Dark
Grow Dark
increases the dark cell size of a symbol. It is useful for increasing the dark cell size of a
dark-on-light Data Matrix symbol.
Shrink Dark
Shrink Dark
increases the light cell size of a symbol. It is useful for increasing the light cell size of a
light-on-dark Data Matrix symbol.
Connect Dark
Connect Dark
removes minor light defects of dark cells.
Separate Dark
Separate Dark
removes minor dark defects of light cells.
The Operator Size dropdown menu determines the size of the area or “pixel neighborhood” in which
the enhance operation is being performed. The larger the operator, the larger the effect of the filter.
For example, using a
Connect Dark enhancement with a Large (7 x 7 pixel) operator size will close
7-pixel-wide holes within a cell.
A
Small 3 x 3 operator size is sufficient for most applications.
Small
Small corresponds to an area of 3 pixels by 3 pixels .
Medium
Medium corresponds to an area of 5 pixels by 5 pixels .
Large
Large corresponds to an area of 7 pixels by 7 pixels .
2-10-2 Enhance
Operator Size