Arc Finder Guideline Offset The Guideline Offset is the offset from the tool X-axis. The Guideline marker can be displaced along the X-axis. This marker acts as both a visual guide for positioning the tool and as a con- straint for the tool Search Mode. Related Topics Arc Finder Configuring Arc Finder Properties - Advanced Arc Finder Results 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 ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 395