Gamal Seedahmed, Lou Martucci, & Peter Doucette (2005). Automated Alignment of Spatial Data Sets Using Geometrically Invariant-information & Parameter Space Clustering (GIPSC). http://www.wipo.int/pctdb/en/wo.jsp?wo=2006105465 (pending). This patent developed a new technology for automatic registration of satellite imagery as well as vector data.