Patent ID: 8723886

Claim:
A method of creating a two-dimensional graphical multi-layered image from a three-dimensional model of a geographic area to enhance a navigation database, the method comprising: receiving three-dimensional graphical object data that represents a geographic area, the three-dimensional graphical object including representations of a path, a path marking on the path, and terrain surrounding the path; rendering a two-dimensional graphical layer of the path by removing the path marking and the terrain, projecting the path in a two-dimensional space, and tracing boundaries of the path, wherein rendering the two-dimensional graphical layer of the path is based on a specific perspective view of the three-dimensional graphical object; storing the two-dimensional graphical layer of the path as a first independent image layer; rendering a two-dimensional graphical layer of the path marking by removing the terrain, projecting the path and the path marking in a two-dimensional space, and tracing boundaries of the path marking, wherein rendering the two-dimensional graphical layer of the path marking is based on the specific perspective view; storing the two-dimensional graphical layer of the path marking as second independent image layer; rendering a two-dimensional graphical layer of the terrain by projecting the path, the path marking, and the terrain in a two-dimensional space, and then tracing boundaries of the terrain, wherein rendering the two-dimensional graphical layer of the terrain is based on the specific perspective view; storing the two-dimensional graphical layer of the terrain as a third independent image layer; and adding the first image layer, the second image layer, and the third image layer together to generate the two-dimensional multi-layered image, the two-dimensional multi-layered image configured to be displayed.