NAVIGATION SYSTEM, TERMINAL DEVICE, NAVIGATION SERVER, NAVIGATION METHOD, AND NAVIGATION PROGRAM

A task of the present invention is to provide a navigation system, a terminal apparatus (100), a navigation server (200), a navigation apparatus (400), a navigation method, and a computer program product capable of presenting guide information that is effective for a user based on a photographed image of a boarding guide display item (for example, a station name signboard, a roll sign, or a route map) that can be photographed in a station yard. The present invention solves the task by acquiring a photographed image of a boarding guide display item by controlling the photographing unit (120, 420), identifying a display content from the photographed image of the boarding guide display item of the means of transportation acquired and specifying a route, a station name, and a traveling direction of a current position based on the identified display content and the traffic network data stored in the storage unit (206, 406), extracting the station names present in the traveling direction from the traffic network data based on the route, the station name, and the traveling direction of the current position that are specified and generating guide information that includes at least a part of the extracted station names, and outputting at least a part of the guide information generated through the output unit.