The invention relates to a speed limit sign identification method and system. The method comprises the following steps of: obtaining an image through a vehicle-mounted camera; according to a road speed limit sign database established in advance, and searching speed limit data matched with the image, wherein the speed limit data includes a speed limit type and magnitudes; if the matched speed limit data is found, obtaining the driving speed of the current vehicle, and according to the speed limit data, sending out an overspeed alarm to a driver for prompting so as to enable the driver to adjust the driving speed of the current vehicle; if no matched speed limit data is found, uploading the image to a server through a wireless network for carrying out identification; and obtaining the speed limit data successfully identified by the server, and updating the speed limit data into the road speed limit sign database. According to the invention, when no matched speed limit data is found, the image is uploaded to the server, and when the server obtains a plurality of images consistent in speed limit data, new and effective speed limit data is formed, so that the road speed limit sign database is updated, thereby ensuring that the newest speed limit data is obtained.
Speed limit sign identification method and system
2015-12-16
Patent
Elektronische Ressource
Englisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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