1. A geospatial modeling system comprising: at least one geospatial information database to store stereo-geographic image data and geographic feature data; and a processor cooperating with said at least one geospatial information database for generating cost coefficients defining a three-dimensional (3D) cost cube based upon the stereo-geographic image data, adjusting the cost coefficients of the 3D cost cube based upon the geographic feature data to generate an adjusted 3D cost cube, and generating a geospatial model based upon the adjusted 3D cost cube.