Line Finder ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 549 Object Definition Polarity Mode Selects the type of polarity accepted for finding an entity. Polarity identifies the change in grey-level values from the center of the tool (inside) toward the outside. Search Mode Specifies the method used by a Finder tool to select a hypothesis. Show Results Graphics Specifies if the graphics are drawn in the Vision Window. Tool Links Image Source Defines the image source used for processing by this vision tool. Region of Interest (ROI) Guideline Offset Defines the offset, from the center of the region of interest, for the guideline. Offset Specifies the center and rotation of the ROI.
X, Y, Degrees. Relative To Specifies the tool that will provide the input to this tool. The tool can be dragged from the Folder pane and dropped into this field. Search Area Defines the height and width of the region of interest. Advanced Properties Conformity Tolerance Maximum local deviation between the expected model contours of an instance and the contours actually detected in the input image. Contrast Threshold Defines the minimum contrast needed for an edge to be detected in the input image and used for line computation. Maximum Angle Deviation Maximum deviation in angle allowed for a detected edge to be used for generating an entity hypo- thesis.
Positioning Level Configurable effort level of the instance positioning process. Subsampling Level Subsampling level used to detect edges that are used by the tool to generate hypotheses.