Arc Caliper Results ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 357 Object Definition Tool Links Image Source Defines the image source used for processing by this vision tool. Region of Interest (ROI) 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 Region Defines the Center, Radius, Rotation, Thickness, and Opening of the ROI. Advanced Properties Bilinear Interpolation Enabled Specifies if bilinear interpolation is used to sample the input image. By default, bilinear interpolation is enabled because it ensures subpixel accuracy.
Custom Sampling Step When enabled, uses the user-defined sampling step instead of the default optimal sampling step to sample the region of interest from the input image. Edge Filter Half Width The half width of the filter should be set to the width of the edge as it appears in the greyscale image . Projection Mode Projection mode used by the tool to detect edges (radial or annular).
Object Definition Instance The index of the located instance Pair Name Name of the edge pair Pair X The X coordinate of the center point of the caliper measure, at the midpoint of the edge pair Pair Y The Y coordinate of the center point of the caliper measure, at the midpoint of the edge pair Pair Radius Mean value of Edge 1 Radius and Edge 2 Radius