Pattern Locator Region of Interest (ROI) The region of interest is the area in which the tool carries out its process. Most tool position parameters can be set through the region of interest section of the tool interface. The fol- lowing parameters define the tool region of interest. Offset Offset is the center of the ROI, defined by: Relative To Relative To specifies the tool that will provide the input to this tool. The tool can be dragged from the Tree structure and dropped into this field. Search Area Search Area is the size of the region of interest is defined by:
ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 589 Object Definition Default Default is the best sampling step computed by the tool. It is based on the average size, in calibrated units, of a pixel in the image. This default sampling step is usually recommended. Default is automatically used by the tool if no other value is specified. Custom Custom Sampling Step lets you set a sampling step value other than the default. To select a cus- tom sampling step, Enable must be checked. Increasing the sampling step value reduces l the tool accuracy and decreases the exe- cution time. Reducing the sampling step can increase l the tool accuracy but will also increase the execution time.
X X coordinate of the center of the region of interest Y Y coordinate of the center of the region of interest Degrees Angle of rotation of the region of interest