Method for updating a geographic database for a vehicle navigation system
A vehicle navigation system and database technology, applied in the field of updating geographic databases, can solve the problems of high cost, time-consuming, low efficiency, etc., and achieve the effect of low reliability and low cost
Active Publication Date: 2014-05-21
AUDI AG +1
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Problems solved by technology
The disadvantage of collecting geographic information by means of people driving all the roads in the assigned geographic area to collect information is that it is time consuming and expensive
Another disadvantage of collecting geographic information by means of people who physically travel to a defined area is that information searches must be repeated at short intervals in order to keep the geographic database current (up-to-date)
The disadvantage of this method is that it relies on the end user to notify the change
Another disadvantage of this approach is that archived satellite imagery is typically used to validate end-user reports of database changes
Another disadvantage of the method described in US 6,873,998 B1 is that the resolution of the satellite images used to confirm end-user reports may not be sufficient to identify geographical features
The disadvantage of this method is that this method cannot take into account the situation that multiple vehicles are affected by the same technical error, such as GPS drift
Another disadvantage of the method is its inefficiency, since it tends to isolate the notification process of abnormal conditions from the detection and analysis of the data, and finally from the update of the database
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[0037] The method for updating a database according to the present invention will be described in detail below with reference to the accompanying drawings. The invention provides a method for updating a geographic database, a satellite image database and / or an aerial image database used in maps in general and in vehicle navigation systems in particular. The description of the preferred embodiment assumes that the image database is located on a remote storage medium, also referred to as a server, from which the vehicle must wirelessly download data as required in order to generate the corresponding map. But the core idea of the invention can be used in the same way in conventional vehicle navigation systems.
[0038] As mentioned above, the geodatabase contains road geography in the form of a road map vector database. Additionally, the geographic database may contain speed limits on roads, turn prohibitions, and other road-related information. Geodatabases can also contain ...
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A method for updating a geographic database containing image data and road vector data to be used in vehicle navigation systems includes determining whether a vehicle is in an on-road position based on information provided by the vehicle navigation system. A geographically coded image is generated with a vehicle-mounted camera if the vehicle is not in an on-road position according to the information provided by the vehicle navigation system. The geographically coded image generated by the vehicle-mounted camera is analyzed in order to determine whether the geographic database requires updating.
Description
technical field [0001] The invention relates to a method for updating a geographic database and to a corresponding motor vehicle, wherein it is determined on the basis of information provided by a vehicle navigation system whether the vehicle is at a location on a road. Background technique [0002] Conventional vehicle navigation systems typically access geographic databases stored eg on DVD (Digital Versatile Disc) or other local data carriers. The geographic database includes road geographic graphics in the form of a road map vector database. In addition, the geographic database may include speed limits on roads, no-turn regulations, road names, signal light locations, and the like. Additionally, the geographic database may include Points of Interest such as hotels, restaurants, gas stations, parking lots, and airports. [0003] The information contained in the geographic database is used, for example, to generate maps or to calculate routes. If changes occur, for exam...
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IPC IPC(8): G01C21/30G08G1/0967
CPCG08G1/0104G01C21/32G01C21/3852G01C21/3815
Inventor L·桑佩德罗迪亚兹D·罗萨里奥D·黑尔德
Owner AUDI AG