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Intersection expression method based on road network data and vector calculation

A technology of road network data and expression method, applied in the field of urban virtual simulation, can solve the problem of lack of road network visualization conversion function and so on

Pending Publication Date: 2022-03-11
SOUTHEAST UNIV
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Problems solved by technology

But at present, such products lack the road network visualization conversion function in the macro-micro integration dimension, especially the intersection expression method in the micro-dimension of the macro-traffic simulation software

Method used

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  • Intersection expression method based on road network data and vector calculation
  • Intersection expression method based on road network data and vector calculation
  • Intersection expression method based on road network data and vector calculation

Examples

Experimental program
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Embodiment Construction

[0036] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0037] This embodiment takes the basic road network in the central urban area of ​​Phnom Penh, the capital of Cambodia, as the research object, and realizes its intersection expression in the micro dimension according to the data processing steps in the technical solution. For the flow chart of the method, see figure 1 , including the following 7 steps:

[0038] (1) Data reading: This example takes the basic road network in the central urban area of ​​Phnom Penh, the capital of Cambodia, as the research object. The road network structure is as follows: figure 2 shown. Read the topological connection relationship and geometric element data of the macro road network in the example, including topological point coordinate data, road section topological connection data and road section geometric element data. Topological point coordinate dat...

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Abstract

The invention discloses an intersection expression method based on road network data and vector calculation, and the method sequentially comprises the steps: reading the road network data; extracting topological connection data of the intersection; the topological edges of the intersections are ranked; calculating intersection points of the intersections; the intersection points of the intersection are smoothed so that the intersection points can better conform to the actual intersection contour range; intersection points of topological edges are calculated; and according to the topological point sequence of the road section topological connection data, connecting the coordinates of the topological edge intersection points in sequence to form a complete road network. The method has relatively high popularization and application values, and can provide a reference method for intersection expression or road network visualization of macroscopic traffic simulation software such as TransCAD and TransStar under a microscopic dimension under a macro-microscopic integrated background.

Description

technical field [0001] The invention belongs to the technical field of urban virtual simulation, and in particular relates to an intersection expression method. Background technique [0002] Urban virtual traffic simulation technology is an important decision-making basis for urban road governance and traffic control. Traditional virtual traffic simulation technology is mainly divided into two categories, one is macroscopic traffic simulation, representative products include TransCAD, TranStar, etc., and the other is microscopic traffic simulation, representative products include VISSIM, SUMO, TESS NG, etc. For a long time, the two types of simulation technologies have been in a state of separation. The macro traffic simulation technology mainly focuses on the overall planning of the city, taking the overall flow of vehicles or vehicle groups as the research object, while the micro traffic simulation technology focuses on the behavior of individual vehicles, and describes in...

Claims

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Application Information

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IPC IPC(8): G06F17/18G06F17/16G06Q50/26
CPCG06F17/18G06F17/16G06Q50/26
Inventor 王炜陶章成于维杰华雪东赵德秦韶阳
Owner SOUTHEAST UNIV
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