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Automatic method for incremental updating and topological connectivity maintenance of overpass

An incremental update, overpass technology, applied in the direction of database update, structured data retrieval, special data processing applications, etc., can solve the problem of difficult to meet the automatic update processing of overpass data.

Pending Publication Date: 2021-08-27
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing incremental update methods for spatial data mainly involve the identification and extraction of road networks, the extraction of road interchanges, and the simplification of identification and cartographic synthesis. automatic update process

Method used

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  • Automatic method for incremental updating and topological connectivity maintenance of overpass
  • Automatic method for incremental updating and topological connectivity maintenance of overpass
  • Automatic method for incremental updating and topological connectivity maintenance of overpass

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Embodiment Construction

[0086] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0087] What should be explained at first is that the automation method of the overpass incremental update and its topology connectivity maintenance provided by the present invention is built in the controller or computer, so as to be able to realize the automatic update processing of vector data; In addition, "A" described below i ” is the ground state of the i-th ground state, “A i s " and "A i e "Respectively represent the ground state object A i The starting and ending points of "V Ai " means A i attribute value; "A j " is the jth increment, "A j s ""A j e " and repr...

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Abstract

The invention relates to a spatial data updating processing method, and discloses an automatic method for incremental updating and topological connectivity maintenance of an overpass, which comprises the following steps of: (1) acquiring incremental data of the overpass; (2) identifying the incremental data and the type of the flyover in the ground state to be updated: dividing the flyover in the incremental data into a separated flyover and an interchange flyover according to whether a ramp exists or not, and further identifying the specific type of the separated flyover based on attribute semantic matching; identifying the specific category of the interchange based on the number of ramps and the number of nodes in the ramp plane topological structure; analyzing and summarizing the spatial change type of the overpass according to the change of the planar topological structure of the overpass in the updated data source; and (3) according to the identified specific category and spatial change type of the flyover, performing automatic updating and topological consistency maintenance by combining a compiled incremental updating processing algorithm and rule. According to the invention, the automation of overpass increment updating is realized.

Description

technical field [0001] The invention relates to a spatial data update processing method, in particular to an automatic method for an overpass incremental update and its topology connectivity maintenance. Background technique [0002] The overpass is the main body of the overpass, a structure that connects different parts of the entire overpass and combines several crossing roads in plane and space. It is a hub that communicates and organizes traffic at different levels and in different directions throughout the overpass, and is the core element of the current urban road network. one. [0003] With the accelerating process of urban construction, changes such as new construction, reconstruction, expansion, and collapse of overpasses occur from time to time. Therefore, it is necessary to update the overpass data in time in urban traffic services. [0004] However, the existing incremental update methods for spatial data mainly involve the identification and extraction of road ...

Claims

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Application Information

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IPC IPC(8): G06F16/23G06F16/29
CPCG06F16/23G06F16/29
Inventor 周晓光赵变利侯东阳
Owner CENT SOUTH UNIV
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