Hardware manual

Wide Edge Point Find Impact Reference Guide
Datalogic Automation Inc. 3-108
Wide Edge Point Find
In the Feature Finding Drawer
The Wide Edge Point Find tool uses an adaptive or fixed threshold method to find edge points along a wide
line ROI.
Input Name What it is
Input Image Linked Image
Tool Origin The tool’s origin relative to the entire image space
Wide Line ROI Points on this ROI are used for finding the edge.
Wide Line ROI List A list of wide line ROIs used for finding the edge.
Noise Level The amount of background noise present in the image. Higher noise
means the edges must be farther apart. Lower noise allows edges that
are closer together.
Maximum Number
Of Edges To Find
Limits the number of edges found to those with the strongest transition
Edge Pattern The edge pattern to find (Rising indicates a transition from dark to light;
Falling indicates a transition from light to dark)
All edges
Alternating Rising/Falling
Alternating Falling/Rising
Rising Only
Falling Only
Central Rising Edge
Central Falling Edge
Blob Threshold
Method
Adaptive Threshold or Fixed Threshold (See “Blob Threshold Method”
on page 3-109)
Fixed Blob Thresh-
old Percentage
The Threshold Percentage when Fixed Blob Threshold is selected (see
“Blob Threshold Method” on page 3-109)
Adaptive Blob
Threshold Offset
If Adaptive Threshold Method is selected, this offset is added to the
adaptive threshold. This allows you to weight the adaptive threshold up
or down.
Subpixel Method The type of subpixel averaging. The grey levels of adjacent pixels (3, 5,
or 7) around an edge point are averaged and used to interpolate the
edge to a fraction of a pixel.
Subpixel Position The subpixel position for edges that are not well defined. See “Subpixel
Position” on page 3-144.
Subpixel Search
Distance in Pixels
The maximum distance, in pixels, that the subpixel algorithm searches
from the threshold edge for the subpixel edge. See “Subpixel Search
Distance” on page 3-125.
Blob Color To Find Bright or Dark objects on the Wide Line ROI
Enable Rise/Fall
Output
If True, the Edge Rise/Fall Indicator List output is populated.