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High precision map path planning system and method

A route planning, high-precision technology, applied in the field of vehicle navigation, can solve the problems of inaccurate route guidance, local route planning cannot confirm which lane it is in, and achieve the effect of improving accuracy

Active Publication Date: 2015-11-11
WUHAN KOTEI INFORMATICS
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AI Technical Summary

Problems solved by technology

[0003] However, the route planning in the current navigation system is based on roads. Its advantage lies in the calculation of long-distance roads. The defect is that the local route planning cannot confirm which lane it is in, making the route guidance not accurate enough.

Method used

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  • High precision map path planning system and method

Examples

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Embodiment Construction

[0021] like figure 1 As shown, a high-precision map route planning system includes the following modules:

[0022] The matching module 10 is used to obtain the starting point and the ending point of the planned route; and match the starting point and the ending point to the traditional map and the high-precision map.

[0023] The traditional map refers to the existing road-level navigation map. The traditional map is data in a binary format (such as Kiwi format), and the data used for route planning refers to the Region data in the Kiwi format. The result of the traditional route planning is obtained through the A* algorithm combined with the Region data in the Kiwi format. Since it is not the focus of the embodiment of the present invention, the traditional route planning method will not be introduced in detail. High-precision maps refer to lane-level navigation maps.

[0024] The traditional map route planning module 20 is used to plan the shortest route road list between ...

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Abstract

The invention provides a high precision map path planning system, comprising the following modules: a matching module for acquiring a starting point and an end point of a planned path, and matching the starting point and the end point on a traditional map and a high precision map; a traditional map path planning module for planning a shortest path road list between the starting point and the end point on the traditional map; a conversion module for reading a prestored traditional map and high precision map corresponding table, and converting the road list to a lane interval on the high precision map according to the corresponding table; a high precision map path planning module for acquiring a recommended lane and the corresponding relation between the recommended lane and a traditional map road at the lane interval on the high precision map by means of a Dijkstra algorithm. The invention also provides a high precision map path planning method.

Description

technical field [0001] The invention relates to the technical field of vehicle navigation, in particular to a high-precision map route planning system and method. Background technique [0002] Car navigation is carried out by using car GPS (Global Positioning System) with electronic map, which can conveniently and accurately tell the driver the shortest or fastest route to the destination. [0003] However, the route planning in the current navigation system is based on roads, and its advantage lies in the calculation of long-distance roads. The disadvantage is that the local route planning cannot confirm which lane it is in, making the route guidance inaccurate. Contents of the invention [0004] In view of this, the present invention provides a high-precision map route planning system and method that can improve the detailed planning of local routes and provide support for accurate route guidance based on high-precision maps. [0005] A high-precision map route planning...

Claims

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Application Information

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IPC IPC(8): G01C21/34
CPCG01C21/3446
Inventor 石涤文
Owner WUHAN KOTEI INFORMATICS
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