Hardware manual

Circle Edge Refinement Impact Reference Guide
Datalogic Automation Inc. 3-116
Adaptive Grey
Level Threshold
Offset
If one of the adaptive settings is picked from Edge Detection Sensitivity,
and Grey Level Edges is selected, then this offset is added to the adap-
tive threshold. This allows you to weight the adaptive threshold up or
down.
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.
Motion Blur The offsetting vector to compensate for blur in the image.
Bounding Circle
Enable
The bounding circle is the smallest circle that includes all the points
found by the tool. If Outlier Enable is True, the tool first eliminates outli-
ers then get the bounding circle using the remaining points.
Subpixel Method The type of subpixel averaging
The grey levels of adjacent pixels (1, 3, 5, 7, or 9) 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.
Arc Angle Range The tool finds and fit points over this part of the circle. By default the
range is 0 to 360 degrees. For arcs of 180 degrees or less, the fitted
radius and center point are less accurate than for full circles. The param-
eters are minus, nominal, plus, include end, and include start.
Output Name What it is
Valid Circle Found
List
A list of true/false indications of valid circles found
Refined Center List The list of refined circle center point locations
Valid Refined Cen-
ter List
The list of valid refined circle center point locations
Refined Diameter
List
The circles’ refined diameters
Maximum Fit Error
List
A list of the measurements that exceeded the maximum fit
All Diameters In Tol-
erance
If true, none of the diameters were outside the defined tolerance
Diameter in Toler-
ance List
A list of the diameters that were within tolerance
Edge Point List A list of the circle’s edge points found
First Circle Line
Segment List
A list of the line segments describing the first refined circle
Bounding Circle
Center List
If Bounding Circle Enable is True, this is the list of points that describe
the Bounding Circles.
Input Name What it is