Omron V440-F, Руководство пользователя

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4-21
4 Setup
V440-F C-Mount Code Reader User Manual
4-5 D
ecod
e
4
4-
5-2 Enh
ance
The
Enhance
dropdown 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
.
4-5-2 Enhance
Operator Size