System and method for synchronizing raster and vector map images

A method for annotating a second map when a first map is annotated, the second map being geographically substantially similar to the first map, the method comprising;

• detecting an annotation entry on the first map expressed by first map coordinates;
• converting from the first map coordinates to corresponding geographic coordinates using a georeferencing function of the first map;
• converting from the geographic coordinates to corresponding second map coordinates using a georeferencing function of the second map;
• and
• displaying the annotation entry on the second map at the second map coordinates.

A computer readable medium containing instructions executable by a computer to perform a method for annotating a second map when a first map is annotated, the second map being geographically substantially similar to the first map, the method comprising:

• detecting an annotation entry on the first map expressed by first map coordinates;
• converting from the first map coordinates corresponding geographic coordinates using a georeferencing function of the first map;
• converting from the geographic coordinates to corresponding second map coordinates using a georeferencing function of the second map;
• and
• displaying the annotation entry on the second map at the second map coordinates.

A method for automatically annotating a second map when a first map is annotated, the second map being geographically substantially similar to the first map, the method comprising:

• receiving an annotation on the first map;
• determining a location of the annotation on the first map using a coordinate system of the first map;
• converting the location to longitude and latitude using a georeferencing function of the first map;
• determining a corresponding location on the second map based on the longitude and latitude using a georeferencing function of the second map;
• and
• displaying the annotation on the second map at the corresponding location.