Hardware manual

Readers Drawer Impact Reference Guide
Datalogic Automation Inc. 3-154
NOTE: Polygon lists are not currently visible in VPM. To see the smoothed polygon list, use a Data Instance
tool with a polygon list data type and link its input to the Polygon Smoothing tool’s smooth polygon list out-
put. You can then promote the Data Instance tool’s shape list output to a task Output.
Readers Drawer
Barcode
INOTE: This tool has been deprecated and replaced by the Code Reader tool (see page 3-167). It is docu-
mented here only for existing vision programs and is no longer supported.
The Barcode tool reads seventeen different barcode types. It automatically determines and sets the type, or
you can do it manually. Outputs include the scan lines, the Pass/Fail status of the tool and each scan line, the
read string, the barcode type, and a list of bar edge points found. See “How the Barcode Tool Works” on
page 3-156 for more details.
A Setup is available for this tool. See “How the Barcode Tool Works” on page 3-156.
Input Polygon List A list of polygons to be smoothed
Output Name What it is
Smooth Polygon
List
The list of smoothed polygons
Input Name What it is
Input Image Linked Image
Tool Origin The tool’s origin relative to the entire image space
Line Segment The x and y coordinates of the endpoints of the primary scan line. Draw
the line across all the bars in the barcode. It may be drawn in either
direction.
Edge Detection
Method
Gradient Edges or Grey Level Edges
Gradient detection generally provides more consistent results. In some
cases Gradient detection can pick up extra edges in a noisy image and
Grey Level detection may offer better control.
See “Edge Detection Method” on page 3-78.
Edge Detection
Sensitivity
The sensitivity level determines the transition level necessary for detec-
tion. A higher setting detects more edges.
Fixed Threshold uses the Adaptive Grey Level Threshold Offset property
value.
Fixed Gradient
Threshold Percent-
age
The gradient threshold value for Fixed Threshold Edge Detection Sensi-
tivity (0 to 100 percent)
Input Name What it is