A method which allows the user to convert several data layers from one GIS into another. The user creates a template map of the area of interest. The template is an "all points" map which, when graphed, would appear as a black polygon identical in shape to the area of interest. Using the first GIS, the...http://www.google.de/patents/US5418906?utm_source=gb-gplus-sharePatent US5418906 - Method for geo-registration of imported bit-mapped spatial data
