Arc Edge Locator Edge Constraint Editor The Arc Edge Locator tool uses a form for configuring the edge constraints - See "Configuring Arc Edge Locator Settings". Related Topics Configuring Arc Edge Locator Properties Configuring Arc Edge Locator Properties - Advanced Arc Edge Locator Results Configuring Arc Edge Locator Properties When the Arc Edge Locator is executed, the Arc Edge Locator first applies edge detection para- meters to the entire region of interest. Then, the tool applies edge scoring constraints to determine which edges are valid edges. Edge Settings parameters determines how the tool detects edges and which edges are valid.
Before configuring the Arc Edge Locator, execute the tool at least once and verify that the tool is being positioned correctly in the image. 1. Under the Edges section of the interface, click Configure. 2. The Edge Settings window opens, as shown in the following figure. This window provides edge detection settings and constraints, as well as visual aids for configuring ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 375 Object Definition Edge X The X coordinate of the located edge (midpoint of located arc). Edge Y The Y coordinate of the located edge (midpoint of located arc). Radius Radial Projection: radius of region of interest. Annular Projection: radius of the found edge.
Edge Score Score of the selected edge. Magnitude Magnitude indicates how well the ROI arc matches the found arc. Magnitude Score Magnitude score of the selected edge. Position Score Position score of the selected edge. Projection Average Average Projection. Projection Magnitude Projection Magnitude.