US Patent 7831433 System and method for using context in navigation dialog

Described is a navigation system. The navigation system comprises a route planning module and a route guidance module. The route planning module is configured to receive a request from a user for guidance to a particular destination. Based on a starting point, the route planning module determines a route from the starting point to the particular destination. The route guidance module is configured to receive the route, and based on the route and current location of the user, provide location-specific instructions to the user. The location-specific instructions include reference to specific visible objects within the vicinity of the user.