Shape Recognition Based on Projected Edges and Global Statistical Features

Figure 8

Definition of the acceptance range. and represent relevant elements from different classes, is the closest irrelevant element. Acceptance threshold for () is set to the half of the distance to the closest irrelevant element (). Acceptance threshold for () is chosen as the distance to the closest element of another class (). Since is an irrelevant template, it is not included in the representative set; thus no acceptance region is defined for it.