Patent ID: 7167187

Claim:
A method of georeferencing a raster map, comprising: displaying a first map in one area of a display, the first map being a digital raster map having a plurality of pixel locations; displaying a second map in a second area of the display, the second map being a georeferenced map having associated geographic coordinates and displaying at least a portion of an identical geographic region displayed in the raster map; receiving a first point on the first map and a corresponding first point on the second map, wherein the first point on the first map and the corresponding first point on the second map represent identical locations; receiving a second point on the first map and a corresponding second point on the second map, wherein the second point on the first map and the corresponding second point on the second map represent identical locations; receiving pixel coordinates for the first point on the first map and the second point on the first map; receiving geographic coordinates for the first point on the second map and the second point on the second map; and automatically computing a georeferencing function that converts between the pixel coordinates of the first map and the geographic coordinates of the second map, wherein the georeferencing function is based on the first and the second points received on the first map and the corresponding first and second points received on the second map, and assigns corresponding geographic coordinates to any one of the plurality of pixel locations.