1. An apparatus comprising: a potential region of interest segmentation device which segments an image data into regions of potential interest, the potential region of interest segmentation device performing a watershed transform which segments the image data in a topographic fashion starting at seed points and propagating until two regions including two adjacent seed points meet; an identifying device which, from the regions of potential interest, identifies a region of interest including an object of interest based on a set of rules; and a recognizing device which differentiates among the identified objects of interest and selects at least one particular object of interest.