Hardware manual

Impact Reference Guide Wide Edge Point Find
3-109 Datalogic Automation Inc.
Blob Threshold Method
Adaptive Threshold: The tool finds the peak grey level and automatically sets the threshold between the
dark and bright areas of the image depending on the statistics of the two areas. It then checks where pixels
fall within that range of grey levels to find edges. You can also apply a threshold offset to weight the adap-
tive threshold up or down. This threshold type allows the system to ignore small fluctuations in lighting,
since the threshold moves automatically.
Fixed Threshold: The threshold is fixed at the Fixed Blob Threshold Percentage value.
Enable Number of
Edges Per ROI Out-
put
If True, the Number of Edges Per ROI List output is populated.
Output Name What it is
Edge Transitions
List
A list of the x and y coordinates of all the edge points found
Edge Rise/Fall Indi-
cator List
A list of edges found, indicating whether the edge is rising (True) or fall-
ing (False)
Number of Edges
Per ROI List
Lists the number of found edges in each ROI
Input Name What it is