KR100329107B1 - 3 Dimension surface/facilities link method - Google Patents

Abstract

The present invention relates to a three-dimensional geographic information system, and more particularly, to a three-dimensional terrain / facility interworking method for linking three-dimensional geographic objects, such as building elements, pipeline elements, road-stream elements and the like with the terrain.

The 3D terrain / facilities interworking method according to the present invention includes a first step of inputting a planar position of a ground facility to be linked with terrain altitude and terrain altitude data provided in a grid form, and the position and terrain of the ground facility. And a third step of obtaining altitude of the terrain on which the ground facilities are located using altitude data, and a third step of obtaining ground facility data linked to the terrain altitude by vertically moving the ground facilities by the altitude of the terrain. do.

Description

3D terrain / facilities link method}

The present invention relates to a three-dimensional geographic information system, and more particularly, to a three-dimensional terrain / facility interworking method for linking three-dimensional geographic objects, such as building elements, pipeline elements, road-stream elements and the like with the terrain.

3D Geographic Information System or Virtual Geographic Information System is a GIS technology field that has recently been attracting attention, and related research is being actively conducted. It is starting to showcase. In addition, several academic and industry associations have released relevant software over the Internet. However, most of the related software is focused on terrain visualization and terrain analysis, and there is little management of facilities. In addition, even a small number of softwares with a 3D facility generation function have almost no linkage management function between the terrain and the facility.

Accordingly, the present invention has been made to solve the above problems of the prior art, three-dimensional to manage the main three-dimensional geographic objects such as building elements, pipeline elements, road-river elements in conjunction with the actual terrain elevation data The purpose is to provide a method of interlocking terrain / facilities.

1 is a schematic structural diagram of a three-dimensional terrain / facility linkage manager according to an embodiment of the present invention,

2 is a flowchart illustrating a terrain / building interworking method according to an embodiment of the present invention;

3 is a flowchart illustrating a terrain / pipeline interworking method according to an embodiment of the present invention;

4 is a flowchart illustrating a terrain / road and river interworking method according to an embodiment of the present invention.

※ Explanation of code about main part of drawing ※

11: 3D terrain / facility interworking manager 12: terrain elevation data

13: building element 14: pipeline element

15: road-river element 16: terrain / building interworking data

17: terrain / pipeline interlocking data 18: terrain / road-stream interlocking data

In order to achieve the above object, the three-dimensional terrain / facilities interworking method according to the present invention includes a first step of inputting a planar position of the ground facilities to be linked with the terrain altitude and terrain elevation data provided in a grid form;

A second step of obtaining an altitude of the terrain in which the ground facility is located by using the location of the ground facility and the terrain altitude data; and

And moving the ground facility vertically by the altitude of the terrain to obtain ground facility data linked to the terrain altitude.

In addition, the three-dimensional terrain / facility interworking method according to the present invention, the planar position of each node of the underground buried to be interlocked with the terrain altitude, the depth of burial at each node, and the terrain altitude data provided in the grid form is inputted The first step,

A second step of obtaining the altitude of the terrain where the underground buried is located by using the location and the terrain altitude data of each node of the underground buried;

A third step of obtaining an altitude value of the underground buried material by subtracting the buried depth from the altitude of the terrain; and

And a fourth step of obtaining underground buried data linked to the terrain altitude.

In addition, the three-dimensional terrain / facility interworking method according to the present invention, the first step of inputting the planar position of the nodes constituting the outer boundary of the road or river to be linked to the terrain altitude and terrain altitude data in the form of a grid,

A second step of obtaining the altitude of the terrain where each node is located by using the location and terrain elevation data of each node of the outer boundary;

And a third step of obtaining road or river data linked with the terrain altitude using the altitude of the terrain.

In addition, the present invention, in a computer,

A first step of obtaining the altitude of the terrain on which the ground facility is located using the position of the ground facility and the terrain altitude data when the terrain altitude data provided in the grid form and the ground position of the ground facility to be linked with the terrain altitude are inputted. Wow,

A second step of obtaining ground facility data linked with terrain altitude by vertically moving the ground facility by the altitude of the terrain;

When the planar position of each node of the underground buried to be linked with the terrain altitude, the depth of burial at each node, and the terrain altitude data provided in the grid form are input, the position and the terrain altitude data of each node of the underground buried are used. A third step of obtaining the altitude of the terrain where the underground buried is located;

A fourth step of subtracting the buried depth from the altitude of the terrain to obtain underground buried data linked to the terrain altitude;

When the planar position of the nodes constituting the outer boundary of the road or river to be linked with the terrain altitude and the terrain altitude data in grid form are inputted, each node is determined using the position and the terrain altitude data of each node of the outer boundary. A fifth step of obtaining altitude of the located terrain, and

A computer readable recording medium having recorded thereon a program for executing a sixth step of obtaining road or river data linked with the terrain altitude using the altitude of the terrain is provided.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a schematic structural diagram of a three-dimensional terrain / facility linkage manager according to an embodiment of the present invention, Figure 2 is a flow chart illustrating a terrain / building interworking method according to an embodiment of the present invention, Figure 3 4 is a flowchart illustrating a terrain / pipeline interworking method according to an embodiment of the present invention, and FIG. 4 is a flowchart illustrating a terrain / road and river interworking method according to an embodiment of the present invention.

The facilities that interact with the terrain are divided into building elements, pipeline elements, and road-stream elements. Building elements refer to various buildings built on the ground. Since these buildings are built on the ground, but the building itself does not have actual elevation information, it calculates the altitude value of the location where the building is built from the terrain elevation data to move the building by that altitude, ie to place the building on the ground. I need work.

Pipeline elements refer to various pipelines buried underground, including water, sewer pipes, telephone cables, power cables, and gas pipes. Since the underground burial contains only two-dimensional path information and depth information on the surface, in order to reproduce the actual three-dimensional shape of the underground burial, it is linked with the terrain data, and the elevation value and the burial of the terrain at the burial position of the underground burial are buried. The shape of the actual buried material is reproduced from the depth.

Road-river elements refer to road elements that are structures installed on the earth's surface, and map elements such as rivers or rivers that flow along the earth's surface. Since these map elements exist on the earth's surface, it is necessary to calculate roads and rivers on the earth's surface by calculating their two-dimensional coordinates and actual elevations from the terrain altitude data. The interlocking management of the terrain and the facility becomes an important factor in ensuring the accuracy of the visualization and analysis of the facility in the 3D geographic information system.

Referring to FIG. 1, the three-dimensional terrain / facilities linkage manager 11 is provided with terrain altitude data 12 in a grid form. When the building element data 13, the pipeline element data 14, and the road-river element data 15 are inputted to the three-dimensional terrain / facility interlocking manager 11, the building data 16 linked with the terrain altitude. And pipeline data 17 linked with the terrain altitude, and road-stream data 18 linked with the terrain altitude data.

The 3D terrain / facility interlocking manager 11 is subdivided into a terrain / building interlocking manager, a terrain / pipeline interlocking manager, and a terrain / road-stream interlocking manager according to the type of input data to be interlocked with the terrain, that is, the type of geographic element. do.

2 is a flowchart illustrating a terrain / building interworking method according to an embodiment of the present invention. In step S21, coordinates (x1, y1) of the center point of the building floor to be interlocked are input. In step S22, terrain altitude data in a grid form is input.

Next, step S23 is to find a grid cell including the coordinates of the center point of the floor of the building from the terrain elevation data. In step S24, an altitude value z1 of the coordinates of the center point is obtained by applying an altitude value of four points forming the lattice cell to the interpolation method. When the building is moved in the vertical direction by using the altitude value z1 at the coordinates of the center point of the building thus obtained, building data linked with the terrain altitude is obtained.

3 is a view illustrating a terrain / pipeline interworking method according to an embodiment of the present invention. In step S31, planar coordinate values (xi, yi) of each node of the pipeline to be interlocked, Is inputted, and in step S32, the embedding depth di, Is input. Further, in step S33, terrain altitude data in the form of a grid is input.

Next, steps S35 to S37 are repeated for each node to obtain an altitude value at each node of the pipeline (steps S34, S38, S39). That is, step S35 is a step of finding the lattice cells including the positions (xi, yi) at each node of the pipeline. In step S36, the altitude value of the four points of the grid cell is applied to the interpolation method to obtain the altitude value zi of the terrain including each node of the pipeline. Step S37 is a step of obtaining the altitude value zbi of each node of the pipeline by subtracting the embedding depth di of each node from the altitude value zi at each node of the pipeline.

Until the variable i becomes from 0 to n, the altitude value at each node of the pipeline is obtained, and in step S40, pipeline data (xi, yi, zbi) to which the terrain altitude is linked is obtained.

4 is a flowchart illustrating a terrain / road-river interworking method according to an embodiment of the present invention. In step S41, planar coordinate values (xi, yi) of nodes forming the outer boundary of the road or river, Is input, and in step S42, terrain altitude data in a grid form is input.

Next, steps S44 to S45 are repeated for each node to obtain an altitude value at each node of the pipeline (step S43, step S46, step S47). That is, step S44 is a step of finding a grid cell including the positions (xi, yi) of each node. Step S45 is a step of obtaining an altitude value zi of a node forming an outer boundary of the road-river by applying an altitude value of four points constituting the lattice cell to the interpolation method.

Until the variable i becomes from 0 to n, the altitude value zi of nodes forming the outer boundary is obtained, and in step S48, road-river data xi, yi, zi to which the terrain altitude is linked are obtained.

The present invention as described above is recorded on a computer-readable recording medium and processed by a computer.

As described above, according to the present invention, it is possible to provide accurate visualization and spatial analysis of each facility by managing three-dimensional geographic elements such as buildings, pipelines, roads, and rivers provided in plan, in conjunction with terrain elevation data. It works.

Claims (4)

Inputting the planar position of the ground facility to be linked with the terrain altitude and terrain elevation data provided in the form of a grid; Finding a grid cell of terrain elevation data to which the planar location of the ground facility belongs; Obtaining altitude of the terrain on which the ground facility is located by applying altitude values of the four points forming the grid cell to interpolation; And moving the ground facilities vertically by the altitude of the terrain to obtain ground facility data linked with the terrain altitude. Inputting the planar position of each node of the underground buried ground to be linked with the terrain altitude, the depth of burial at each node, and the terrain altitude data provided in the form of a grid; Finding grid cells of terrain elevation data to which each node of the underground buried land belongs; Obtaining an altitude of a terrain in which the underground facility is located by applying an altitude value of four points forming the lattice cell to an interpolation method; Obtaining an altitude value of the underground buried material by subtracting the buried depth from the altitude of the terrain; 3D terrain / facilities interworking method comprising the step of obtaining underground buried data interlocked with the terrain altitude. Inputting the planar position of the nodes constituting the outer boundary of the road or river to be linked with the terrain altitude and the terrain altitude data in grid form; Finding a grid cell to which each node of the outer boundary of the road or river belongs; Obtaining altitude of the terrain on which the outer boundary of the road or river is located by applying an altitude value of four points forming the lattice cell to an interpolation method; And obtaining road or river data linked with the terrain altitude using the altitude of the terrain. On your computer, A first step of obtaining the altitude of the terrain on which the ground facility is located using the position of the ground facility and the terrain altitude data when the terrain altitude data provided in the grid form and the ground position of the ground facility to be linked with the terrain altitude are inputted. Wow, A second step of obtaining ground facility data linked with terrain altitude by vertically moving the ground facility by the altitude of the terrain; When the planar position of each node of the underground buried to be linked with the terrain altitude, the depth of burial at each node, and the terrain altitude data provided in the grid form are input, the position and the terrain altitude data of each node of the underground buried are used. A third step of obtaining the altitude of the terrain where the underground buried is located; A fourth step of subtracting the buried depth from the altitude of the terrain to obtain underground buried data linked to the terrain altitude; When the planar position of the nodes constituting the outer boundary of the road or river to be linked with the terrain altitude and the terrain altitude data in grid form are inputted, each node is determined using the position and the terrain altitude data of each node of the outer boundary. A fifth step of obtaining altitude of the located terrain, and A computer-readable recording medium having recorded thereon a program for executing a sixth step of obtaining road or river data linked to the terrain altitude using the terrain altitude.