Image Sharpness Results NOTE : Before configuring the Image Sharpness Tool, execute the tool at least once and verify that the tool is being positioned correctly in the image. The display represents the region of interest of the Image Sharpness Tool as a green box. Positioning the Image Sharpness Tool Positioning the tool defines the area of the image that will be processed by the Image Sharp- ness Tool. To position the Image Sharpness tool: l A blue marker indicates the frame provided by the Frame Input tool. If there is more than one object in the image, make sure that you are positioning the bounding box rel- ative to the object identified by a blue axes marker.
l Enter values in the Search Area parameter, or use the mouse to configure the bound- ing box in the display. Related Topics Image Sharpness Results Configuring Image Sharpness Properties - Advanced Configuring Image Sharpness Properties - Advanced The Image Sharpness Tool operates by first identifying a set of points with high local grey- scale variations at various points and applying an autocorrelation method to calculate an aver- age sharpness factor from these points. ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 530 Object Definition Instance Identifies the number of the Instance output by the Image Sharpness Tool. Average Average sharpness value calculated for the cur- rent instance.
Point Count Number of points actually used to measure the average sharpness for the current region of interest. Peak Maximum average sharpness value computed by the tool