Adept AdeptSight User Guide - Manual (Page 287)

Configuring Arc Finder Properties - Advanced
The Advanced Properties section of the Arc Finder tool interface provides access to advanced
Arc Finder parameters and properties.
Advanced Properties
Arc Must Be Totally Enclosed
By default, Arc Must Be Totally Enclosed is true, which means that the tool will find an arc
only if both its start and end points are located on the radial bounding sides of the Arc search
area.
When false, the tool can find an arc that enters and/or exits the Arc at the inner or outer
annular bounds of the Arc search area.
Conformity Tolerance
Conformity Tolerance corresponds to the maximum distance in calibrated units by which a
matched edge can deviate from either side of its expected position on the arc.
Default Conformity Tolerance is a read-only value that is computed by the tool by analyzing
the calibration, the edge detection parameters, and the search parameters.
To manually set the Conformity Tolerance, check the Enable box.
l If a value lower than the Minimum Conformity Tolerance value is set, the Conformity
Tolerance value is automatically reset to the minimum valid value.
l If a value higher than the Maximum Conformity Tolerance value is set, the Conformity
Tolerance value is automatically reset to the maximum valid value.
Contrast Threshold
Contrast Threshold sets the minimum contrast needed for an edge to be detected in the
input image. The threshold value expresses the step in grey-level values required to detect
edges.
Contrast Threshold Modes
Contrast Threshold Mode defines how contrast threshold is set. Contrast thresh-
old is the level of sensitivity that is applied to the detection of edges in the input
image. The contrast threshold can be either Adaptive, or Fixed.
Adaptive thresholds set a sensitivity level based on image content. This pro-
vides flexibility to variations in image lighting conditions and contrast during
the Search process.
Configuring Arc Finder Properties - Advanced
AdeptSight User's Guide, Version 3.2.x, Updated: 8/23/2012
Page 287