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2.5-dimensional spatial data visualization method based on GIS, medium and equipment

A technology of spatial data and dimensional space, applied in the field of space, can solve the problems of long time consuming of 3D models, high computer performance requirements, low precision, etc., and achieve the effect of fast browsing access, low software and hardware requirements, and fast reality speed.

Pending Publication Date: 2021-02-26
GUANGDONG GUANGYU SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned 2.5-dimensional spatial data visualization method mainly has the following disadvantages: (1) It takes a long time to build a 3D model by using the texture method, and the accuracy is low. It is necessary to construct the building outline before performing the mapping operation, and the complex structure of the building cannot meet the requirements of complete restoration.
(2) Due to software limitations, the whole process of 2.5-dimensional spatial data visualization construction from data integration to Internet browsing cannot be completed under the same tool, and operations such as format conversion and unified coordinates are required to reduce efficiency
(3) The 3D model takes up a lot of space, the format is not uniform, and requires high requirements on the network environment and capacity, which is not conducive to the popularization and promotion of technology. Web-based 3D needs to install a 3D client plug-in for browsing, which requires high computer performance and experience. Ineffective
(4) Two-dimensional spatial data only perform simplified processing of plane projection for all kinds of geographical objects in three-dimensional space, which cannot completely and intuitively express the spatial information on the vertical axis Z and reflect the objective world

Method used

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  • 2.5-dimensional spatial data visualization method based on GIS, medium and equipment
  • 2.5-dimensional spatial data visualization method based on GIS, medium and equipment

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Experimental program
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Effect test

Embodiment 1

[0057] The present embodiment discloses a GIS-based 2.5-dimensional spatial data visualization method, which realizes visualization of 2.5-dimensional spatial data based on GIS tools, such as figure 1 As shown, the specific steps include:

[0058] S1. Data model construction and import, specifically including:

[0059] S101. Define a projected coordinate system:

[0060] According to the geographic location and map specifications that need to construct 2.5-dimensional spatial data, the projection is defined in advance, and the coordinate system of each spatial data is unified;

[0061] S102. Obtain the spatial data collected by the acquisition equipment on the drone, and determine the spatial data information that needs to be modeled; in this embodiment, the objects that need to be modeled in the space, such as buildings, etc., are collected by the acquisition equipment carried by the drone Its spatial data includes all information on the surface of the object, such as traje...

Embodiment 2

[0087] This embodiment discloses a GIS-based 2.5-dimensional spatial data visualization device, such as figure 2 shown in , including

[0088] The first module of spatial coordinate system is used to pre-define the projection and unify the coordinate systems of each spatial data according to the geographic location and map specifications that need to construct 2.5-dimensional spatial data.

[0089] The acquisition module is used to acquire the spatial data collected by the UAV. In this embodiment, objects that need to be modeled in space, such as buildings, etc., collect their spatial data through the acquisition equipment carried by the drone.

[0090] The data model generation module is used to generate a three-dimensional spatial data model according to the spatial data collected by the UAV, as well as the scale, precision and spatial data coordinate system.

[0091] The import module is used to uniformly import the 2.5-dimensional three-dimensional spatial data model th...

Embodiment 3

[0098] This embodiment discloses a storage medium, which stores a program. When the program is executed by a processor, the GIS-based 2.5-dimensional spatial data visualization method described in Embodiment 1 is implemented, as follows:

[0099] According to the geographic location and map specifications that need to construct 2.5-dimensional spatial data, the projection is defined in advance, and the coordinate system of each spatial data is unified;

[0100] Obtain spatial data collected by drones;

[0101] Generate a three-dimensional spatial data model based on the spatial data collected by the UAV, as well as the scale, accuracy and spatial data coordinate system;

[0102] A 2.5-dimensional 3D spatial data model needs to be generated for unified import through GIS analysis tools;

[0103] For the 3D spatial data model imported by GIS analysis tools, the preset spatial data tile caching mechanism;

[0104] In the GIS analysis tool, generate 2.5-dimensional spatial data ...

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Abstract

The invention discloses a 2.5-dimensional spatial data visualization method based on a GIS, a medium and equipment, and the method comprises the steps: firstly unifying all spatial data coordinate systems, and obtaining spatial data collected by an unmanned plane; generating a three-dimensional space data model according to the space data collected by the unmanned aerial vehicle and the scale, theprecision and the space data coordinate system; importing a three-dimensional space data model which needs to generate 2.5 dimensions; presetting a spatial data tile caching mechanism; in the GIS analysis tool, according to a preset spatial data tile cache, generating a 2.5-dimensional spatial data tile; generating an engineering file by using a GIS analysis tool, reading a spatial data tile caching mechanism, and generating a map service address; and in the map service address, loading the 2.5-dimensional spatial data tile service according to a spatial data tile caching mechanism. Accordingto the method, the 2.5-dimensional spatial data can be rapidly visualized, and the method has the advantages of being low in cost, high in reducibility, high in response speed and beneficial to popularization.

Description

technical field [0001] The invention relates to spaces such as construction engineering, and in particular to a GIS-based 2.5-dimensional space data visualization method, medium and equipment. Background technique [0002] Spatial data visualization With the continuous development of the Internet and GIS technology, true three-dimensional geographic spatial data has migrated from early paper products to two-dimensional and three-dimensional electronic products. On the one hand, two-dimensional spatial data is only for various geographic objects in three-dimensional space. Simplified processing of all plane projections cannot completely and intuitively represent the spatial information on the vertical axis Z and reflect the objective world; on the other hand, the current 3D spatial data cannot be quickly accessed and browsed in the existing network environment due to format, capacity and other reasons , the experience effect needs to be improved, and it is not satisfied with ...

Claims

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Application Information

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IPC IPC(8): G06F16/26G06F16/29G06T17/05
CPCG06F16/26G06F16/29G06T17/05
Inventor 邓超河陈建生罗淑冰植挺生文青刘泽宇劳兆成
Owner GUANGDONG GUANGYU SCI & TECH DEV
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