Methods, systems, and computer program products for estimating the location of a probe cell in an image of a high-density microarray DNA chip interrogate a plurality of different closely spaced estimated locations to identify the most likely estimated location of the probe cell in the image....http://www.google.de/patents/US6993173?utm_source=gb-gplus-sharePatent US6993173 - Methods for estimating probe cell locations in high-density synthetic DNA microarrays