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Cross positioning navigation method combining satellite positioning and digital scene matching identification

A technology of satellite positioning and scene matching, which is applied in the field of cross positioning and navigation, can solve the problems of updating navigation maps and not being able to update navigation maps all the time, so as to improve navigation reliability, simplify calculation workload, and achieve huge market prospects and economic benefits. benefit effect

Inactive Publication Date: 2014-10-15
朱孝杨
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Problems solved by technology

At present, our country is in the stage of urbanization, and the streets in the city are changing with each passing day. Therefore, not only the navigation map service provider cannot update the navigation map in time according to the new urban changes, but also the user cannot update the navigation in the navigation terminal all the time. map, so navigation deviation due to errors in the navigation map will be a high probability event for a considerable period of time

Method used

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specific Embodiment approach

[0023] First, the intersection scene image is obtained through the camera, and then the obtained intersection scene is blurred to obtain a blurred intersection image, and then the blurred intersection is abstracted to obtain an abstract intersection image, and finally the abstraction is performed. After digital processing of the intersection image, a feature function describing the characteristics of the intersection is obtained. The feature function describes the various lines that constitute the image features in the digitized image and the relative positional relationship between these lines. Therefore, although the shooting angle and the shooting time and seasons in the actual shooting process will vary. , but the relative positional relationship between the various lines that constitute image features will not change greatly due to different shooting angles and different shooting times or seasons. In addition, in order to enable ordinary 3G mobile terminals such as smart ...

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Abstract

The invention discloses a novel positioning navigation method, and in particular relates to a cross positioning navigation method combining satellite positioning and digital scene matching identification. According to the method, digital characteristic function image recognition method is used for three steps of obfuscation, abstraction and digitization of an intersection scene filmed in real time, and a characteristic function is established for each intersection, then is bounded with a satellite positioning position and stored in a city geographic information database. When driving, the characteristic function of the intersection scene filmed in real time is matched with a corresponding intersection scene characteristic function prestored in the database by navigation equipment for comparison to achieve accurate intersection recognition, and an obtained position is compared with a current position generated by satellite positioning navigation, and if the obtained position does not agree with the current position generated by the satellite positioning navigation, a navigation deviation or a navigation error is occurred.

Description

technical field [0001] The patent of the present invention relates to a novel positioning and navigation method, especially a cross positioning and navigation method that combines satellite positioning and digital scene matching and recognition. Background technique [0002] Satellite positioning and navigation is a well-known and popular positioning and navigation method, but the defect of satellite positioning and navigation is that it relies heavily on the correctness of the navigation map. If there is a problem with the navigation map, serious navigation deviation will occur. At present, our country is in the stage of urbanization, and the streets in the city are changing with each passing day. Therefore, not only the navigation map service provider cannot update the navigation map in time according to the new urban changes, but also the user cannot update the navigation in the navigation terminal all the time. map, so the occurrence of navigation deviation due to errors...

Claims

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Application Information

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IPC IPC(8): G01C21/30
CPCG01C21/30
Inventor 朱孝杨
Owner 朱孝杨
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