If the patterns found in an image overlap one another at more than a specified ratio, the GPM Locator Tool leaves only the pattern having the highest score and deletes the others.
For example, suppose that you teach a regular triangle, like the one shown in Fig.(i), as the model pattern and specify the orientation range as from -180 degrees to +180 degrees. The GPM Locator Tool recognizes that a pattern matches at three different orientations, as shown in Fig.(ii). Since these three patterns overlap one another, however, the tool leaves only one pattern having the highest score, ignoring the others.
Whether two patterns overlap is determined by whether the area where the patterns' rectangular frames overlap is larger than the ratio specified for overlap restriction. If the ratio of the overlapping area is larger than the specified value, the patterns are judged to overlap. If you specify 100% for overlap restriction, the tool will not delete overlapping patterns unless they fully overlap one another (i.e. they have completely the same geometry). The default value is 75%.