A road network preprocessing method for merging traffic nodes

A road network and preprocessing technology, applied in traffic flow detection and other directions, can solve the problems of unhelpful road traffic analysis, increase computing time, occupy computing memory space, etc., to improve the speed of traffic analysis, reduce the space occupied by data, The effect of optimizing the road network structure

Active Publication Date: 2020-08-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the road network analyzed based on open source road information, there are situations where multiple traffic nodes represent common intersections, which not only does not help road traffic analysis, but also occupies computing memory space and increases computing time

Method used

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  • A road network preprocessing method for merging traffic nodes
  • A road network preprocessing method for merging traffic nodes
  • A road network preprocessing method for merging traffic nodes

Examples

Experimental program
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Embodiment Construction

[0025] Below in conjunction with embodiment further set forth this inventive method.

[0026] figure 1 It is a basic flowchart of a road network preprocessing method for merging traffic nodes, which specifically includes the following steps:

[0027] Step 1: Based on the road network to be processed, construct the basic file used to represent the urban road network information, using figure 2 The road network shown is illustrated:

[0028] 1.1. Construct the basic information file of the traffic node, and the results are shown in Table 1;

[0029] Table 1 Basic Information of Transportation Nodes

[0030]

[0031] 1.2. Construct the basic information file of the road section, and the results are shown in Table 2;

[0032] Table 2 Basic Information of Road Sections

[0033] section number Section starting point segment end section number Section starting point segment end 1 2 10 7 8 9 2 10 11 8 9 10 3 11 5 9 10 3 4 6 ...

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Abstract

The present invention discloses a road network pre-processing method of combination of traffic nodes. The method comprises the following steps: taking a road network to be processed as a basis, and constructing a basic file configured to represent urban road network information; determining a node combination radius according to road network features and an expected target; generating reference nodes according to an assigned rule, and searching nodes to be combined in a combination radius range; and finally, deleting the searched nodes to be combined, and processing the basic file. The road network pre-processing method of combination of traffic nodes can optimize a road network, formed by a plurality of traffic nodes, of an intersection so that cleanliness and readability of a road network can be improved.

Description

technical field [0001] The invention relates to a road network preprocessing method for merging traffic nodes, and belongs to the technical field of urban road network preprocessing. Background technique [0002] In recent years, in the context of increasing urban traffic congestion, serious pollution, and frequent safety accidents, the calls for the construction of smart transportation cities have become more and more intense. Including the urban transportation virtual platform built by Southeast University, various An integrated application system that is based on urban traffic big data and can realize functions such as formulation, implementation and evaluation of auxiliary schemes has been continuously proposed and promoted. [0003] With the continuous development of network information technology, open road traffic information provides more accurate and massive road network data for promoting the construction of urban traffic virtual platform. At present, from the tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01
Inventor 王炜吴忠君戴随喜杨洋
Owner SOUTHEAST UNIV
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