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Method for automatically generating dual line network by GIS single line network

A technology of automatic generation and line network, applied in the field of GIS road network, can solve the problems of long cycle, high production cost, limited road network production efficiency, etc., and achieve the effect of low cost and short cycle

Active Publication Date: 2019-02-01
CHECC DATA CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of production process has high precision and accurate information, the production cost is high and the cycle is long, which limits the production efficiency of this road network

Method used

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  • Method for automatically generating dual line network by GIS single line network
  • Method for automatically generating dual line network by GIS single line network
  • Method for automatically generating dual line network by GIS single line network

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Embodiment

[0043] The present invention adopts the GIS road data of the single-line network model, and completes the automatic production of the two-line road data through certain data processing.

[0044] Single-line dual-attribute road data mainly includes the node layer (Point type) and road network layer (Polyline) of the single-line network. The node layer needs to contain the node ID field and the coordinate field. The id field is used to mark the distance between different nodes. number difference. The coordinate field identifies the location of the node; see figure 1 For A, B, C, and D nodes in , the road network layer needs to contain four fields: the number of forward lanes (CDS), the number of reverse lanes (RCDS), the starting node ID, and the ending node ID. Among them, there is an association relationship between the starting node ID, the ending node ID and the ID field of the node layer. See figure 1 AB, AC, AD, AE road sections in .

[0045] Concrete method of the pre...

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Abstract

The invention relates to a method for automatically generating a dual line network by a GIS single line network. The method comprises the following steps: 1) obtaining GIS road data of single line network model, including node layer and road network layer data, and judging the intersection type and road type according to the intersection location and road location; 2) determining the offset direction of the road network node and calculating the offset, forming a road boundary of the dual line network, and generating an offset node of the road network node; 3) performing curve interpolation onthe offset node to indicate the driving path of the vehicle at the road network node, and finally generating a dual line network. Compared with the prior art, the invention has the advantages of low cost, short cycle, and suitable for road maps with low precision requirements.

Description

technical field [0001] The invention relates to the field of GIS road networks, in particular to a method for automatically generating a double-line network from a GIS single-line network. Background technique [0002] The GIS road network is to visualize the real roads in the form of GIS data. The current mainstream road network models are single-line dual-attribute node-segment model (single-line network model for short), double-line dual-attribute node-segment model (short for dual-line network model), and lane-level road network model. Among them, the mobile phone navigation road network generally adopts a single-line network model; the lane-level road network is generally used in scenarios such as assisted driving and driverless driving. The dual-line network model is generally used to represent the different properties of the two traffic directions in road scenarios, such as different road conditions and different traffic flows. [0003] The current dual-line network...

Claims

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Application Information

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IPC IPC(8): G01C21/34G06F16/29
CPCG01C21/3415
Inventor 吴杭彬瞿一航
Owner CHECC DATA CO LTD
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