CN115017348A - Method and device for realizing grid data graph - Google Patents

Method and device for realizing grid data graph Download PDF

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Publication number
CN115017348A
CN115017348A CN202210596428.1A CN202210596428A CN115017348A CN 115017348 A CN115017348 A CN 115017348A CN 202210596428 A CN202210596428 A CN 202210596428A CN 115017348 A CN115017348 A CN 115017348A
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data
grid
dimensional
mesh
subdivision
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程承旗
任伏虎
刘越
伍学民
刘杰
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Beidou Fuxi Zhongke Digital Hefei Co ltd
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Beidou Fuxi Zhongke Digital Hefei Co ltd
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    • G06—COMPUTING; CALCULATING OR COUNTING
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
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    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/54—Browsing; Visualisation therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
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    • G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • G06F16/587—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using geographical or spatial information, e.g. location
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
    • G06T17/10—Constructive solid geometry [CSG] using solid primitives, e.g. cylinders, cubes
    • G—PHYSICS
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    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
    • G06T17/20—Finite element generation, e.g. wire-frame surface description, tesselation
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
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Abstract

The invention provides a method and a device for realizing a grid data graph by taking the whole earth as a research object, and can realize a three-dimensional, multi-scale and polymerizable three-dimensional grid model. The invention discloses a method for realizing a three-dimensional grid data graph, which comprises the following steps: acquiring spatial position information from original data; determining a data subdivision level according to the use requirement or the data precision and a subdivision level strategy; carrying out three-dimensional mesh generation structuralization processing on the space three-dimensional object according to the space position information and the determined data generation level to generate a three-dimensional logic generation mesh code and a mesh index large table; and generating a regional three-dimensional grid map based on the three-dimensional logic subdivision grid codes and the grid index large table.

Description

Method and device for realizing grid data graph
Technical Field
The invention belongs to the technical field of electronic information, and relates to a method and a device for realizing a grid data graph.
Background
Conventional vector maps are divided into planar maps and three-dimensional maps. The planar map is stored in a spatial information system in a layer mode, and each layer independently expresses a type of spatial object. Three-dimensional maps are based on three-dimensional electronic map databases to scale a three-dimensional, abstract description of one or more aspects of the real world or a portion thereof. The manufacturing is generally completed by technical means such as aerial photography and three-dimensional precision molding. The three-dimensional map is mainly used for expressing the outer surface of the space object and has a good visualization effect.
The grid map is a mapping method in which an earth mapping area is divided into grids according to a certain rule in an earth space, and a grid set is used to represent quantitative distribution characteristics of point-like, linear, and planar geographic elements. One type of the existing grid maps is a business grid, which is mainly used for the management of certain industries, such as a community management grid, an environmental protection grid and a meteorological grid; one is a geographic grid, such as a geographic grid-based population distribution analysis, geographic grid-based geographic element integration.
However, the existing grid map is a plane grid, has no height information, and has a fixed grid size, and cannot be changed at will after division is completed, and if the grid range is changed, the associated data needs to be updated manually; moreover, because the existing grid is a local grid, the service grid only serves a certain city, and the service grid is generally divided by taking the city as an object.
Disclosure of Invention
The invention provides a method and a device for realizing a grid data graph by taking the whole earth as a research object, which can realize a three-dimensional, multi-scale and polymerizable grid model and can realize a three-dimensional grid data graph and a plane grid data graph aiming at different dimensions.
The invention is realized by the following technical scheme.
A three-dimensional grid data graph implementation method comprises the following steps: acquiring spatial position information from original data; determining a data subdivision level according to the use requirement or the data precision and a subdivision level strategy; carrying out three-dimensional mesh generation structuralization processing on the space three-dimensional object according to the space position information and the determined data generation level to generate a three-dimensional logic generation mesh code and a mesh index large table; and generating a regional three-dimensional grid map based on the three-dimensional logic subdivision grid codes and the grid index large table.
A planar grid data graph implementation method comprises the following steps: acquiring metadata information of a grid base map and a vector base map, and extracting spatial position information from the metadata information; determining a data subdivision level according to the use requirement or the data precision and a subdivision level strategy; generating Beidou grid codes corresponding to the data subdivision levels according to the spatial position information; and generating the Beidou grid code into a plane grid layer by adopting a grid map issuing engine.
The invention has the beneficial effects that:
1. when the plane grid data diagram is realized, each level of grids can be polymerized and split, the data requirements of different scales are met, and the grids of different levels can be associated with spatial data of different scales and resolutions;
2. the three-dimensional grid data graph is constructed when the three-dimensional grid data graph is realized, the association and the display of a three-dimensional object can be realized, and particularly, the true three-dimensional visualization of field data can be realized in the field data expression aspect;
3. the invention adopts unified coding to carry out data association, and when the original database is updated, the data of the display system is automatically associated and updated.
Drawings
FIG. 1 is a flow chart of a method for implementing a planar grid data graph according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for implementing a three-dimensional grid data graph according to an embodiment of the present invention;
FIG. 3 is a diagram of a planar grid data graph implementation apparatus according to an embodiment of the present invention;
fig. 4 is a diagram of an apparatus for implementing a three-dimensional mesh data map according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
The method for realizing the grid data diagram comprises the realization of a plane network data diagram and the realization of a three-dimensional grid data diagram.
As shown in fig. 1, a method for implementing a plane grid data diagram in this embodiment specifically includes:
acquiring metadata information of a grid base map and a vector base map, and extracting spatial position information from the metadata information;
step two, determining a data subdivision level according to the use requirement or the data precision and a subdivision level strategy;
step three, generating Beidou grid codes corresponding to the data subdivision levels according to the spatial position information;
fourthly, generating a plane grid layer from the Beidou grid code by adopting a grid map issuing engine; each grid of the planar grid layer is a standard grid, the grids are recursively divided according to levels by using a geospatial grid subdivision method, and low-level grids are aggregated into high-level grids according to the same codes of the previous bits; the high-level grid can be split into low-level grids through further subdivision and coding, and the data requirements of different scales can be met.
When the method is implemented specifically, the source database is updated, and the attribute information is automatically matched with the grid codes again; and the display system displays according to the new matching result, thereby realizing synchronous updating.
As shown in fig. 2, a method for implementing a three-dimensional mesh data diagram in this embodiment specifically includes:
step 1, acquiring spatial position information from original data;
in this embodiment, the original data includes: CAD (Computer Aided Design) data, digital orthophotos, real orthophotos, oblique photography three-dimensional models, laser point clouds, street view data, BIM (Building Information model) data, and object elevation data, such as water depth data, Building height data.
Step 2, determining a data subdivision level according to the use requirement or the data precision and a subdivision level strategy;
step 3, performing three-dimensional mesh division structuralization processing on the space three-dimensional object according to the space position information and the determined data division level to generate a three-dimensional logic division mesh code and a mesh index large table;
step 4, generating a regional three-dimensional grid map based on the three-dimensional logic subdivision grid codes and the grid index large table; in this embodiment, after the regional three-dimensional network map is generated, the regional three-dimensional network map is colored and displayed according to the correspondence between the spatial three-dimensional object attributes and the colors; in specific implementation, when the spatial stereo object attribute changes, the grids in the regional three-dimensional grid map change accordingly. The change of the spatial attribute can be visually displayed when the three-dimensional data graph is displayed. For example: adopting a yellow grid to represent a living room; the colorless grid represents an unoccupied room, and the grid changes in real time when the information of the living people changes.
According to the method for realizing the three-dimensional grid data map, the urban three-dimensional grid map is established as an example:
the three-dimensional grid map in the embodiment is constructed by matching an urban plane electronic map with a place name address data table and analyzing big data, and the grid map is constructed and simultaneously the data is used for carrying out attribute assignment on the grid, so that information data are related and marked to a building, a unit, a layer and a room.
Firstly, the place name address data is matched with the building, and the original data is obtained. And searching a corresponding building vector diagram in the matched electronic map by using standard address information (accurate to a single building) in the information table to obtain the building outline diagram vector data.
Secondly, analyzing the building structure by using the place name address data, constructing a building grid graph, and determining a data subdivision level. The data accurate to the family room of all '24 th buildings in Zhen-west, the sunny region facing the Beijing city' are gathered in the standard address information data, the number of units, the number of floors and the number of family rooms contained in the building are analyzed, the number of floors of each unit (different possible number of floors of the unit), the number of branch family rooms on each floor of each unit and the like are accurate, and a building information database of information of a single building unit, floors, family rooms and the like is formed.
And then, constructing a building grid graph, and generating a three-dimensional logic subdivision grid code and a grid index large table. And setting the building floor height or directly setting the building height, and calling a building information database to construct the three-dimensional white model of the building. And selecting a proper grid level (grid size) to carry out three-dimensional grid subdivision modeling on the white mould of the building according to the acquired building data and considering the space size of the building data to form a grid map of the building. The white mould of the building has spatial three-dimensional data such as planar position information, building outline information, height information and the like, an entity is formed in a geographic space, and GeoSOT (Global mesh division) coding software is utilized to carry out three-dimensional mesh division on the three-dimensional building model and code the three-dimensional mesh division and generate a mesh index table of the building.
And finally, carrying out aggregation on the grid associated information data to generate the urban grid map. After a three-dimensional grid map of a building is generated, an information database of the building is called, unit data, floor data and individual room data are read, information data assignment association is carried out on the three-dimensional grid of the building by using the data according to a floor height setting and basic individual room setting scheme, and the data information is implemented to the unit, the floor and the individual room position of the three-dimensional grid map of the building.
The basic floor height and room distribution knowledge graph, intelligent matching and manual checking can be formed according to local building characteristics and buildings with different purposes.
After the generation of the three-dimensional grid map of the single building and the association of the grid assignment of the information data are completed, the grid map data of the single building are formed. The three-dimensional grid maps of all buildings of a cell and a city are converged through the city grid map to generate the three-dimensional grid map of the cell and the city.
The city grid map can be formed by a city electronic map and city satellite remote sensing image map grid subdivision codes, and the building grid map is matched with the city grid map by space grid codes to generate the city grid map.
As shown in fig. 3, an embodiment of the present invention further provides an apparatus for implementing a planar grid data graph, including:
the metadata acquisition module is used for acquiring metadata information of the grid base map and the vector base map and extracting spatial position information from the metadata information;
the data subdivision module is used for determining a data subdivision level according to the use requirement or the data precision and a subdivision level strategy;
the grid code generation module is used for generating Beidou grid codes corresponding to the data subdivision levels according to the spatial position information;
and the grid layer generating module is used for generating the Beidou grid code into a plane grid layer by adopting a grid map issuing engine.
As shown in fig. 4, an embodiment of the present invention further provides a device for implementing a three-dimensional mesh data diagram, including:
the data acquisition module is used for acquiring spatial position information from the original data;
the data subdivision module is used for determining a data subdivision level according to the use requirement or the data precision and a subdivision level strategy;
the mesh generation module is used for carrying out three-dimensional mesh generation structuralization processing on the space three-dimensional object according to the space position information and the determined data generation level to generate a three-dimensional logic generation mesh code and a mesh index large table;
and the grid map generation module is used for generating a regional three-dimensional grid map based on the three-dimensional logic subdivision grid codes and the grid index large table.
The embodiment of the invention further provides electronic equipment for realizing the three-dimensional grid data diagram, which comprises:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the plurality of instructions are for being stored by the memory and loaded and executed by the processor to implement the three-dimensional mesh data graph as described above.
Embodiments of the present invention further provide a computer-readable storage medium having a plurality of instructions stored therein; the plurality of instructions are for loading and executing the three-dimensional mesh data graph implementation method by a processor.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it will be understood by those skilled in the art that various changes and modifications may be made herein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. A method for implementing a three-dimensional grid data graph is characterized by comprising the following steps:
acquiring spatial position information from original data; determining a data subdivision level according to the use requirement or the data precision and a subdivision level strategy; carrying out three-dimensional mesh generation structuralization processing on the space three-dimensional object according to the space position information and the determined data generation level to generate a three-dimensional logic generation mesh code and a mesh index large table; and generating a regional three-dimensional grid map based on the three-dimensional logic subdivision grid codes and the grid index large table.
2. The method according to claim 1, wherein the regional three-dimensional grid map is rendered and displayed in the regional three-dimensional grid map according to the correspondence between the spatial stereo object attributes and colors after the regional three-dimensional grid map is generated.
3. A method of implementing a three-dimensional grid data map as claimed in claim 1 or 2, wherein said raw data comprises: CAD data, digital orthographic images, real orthophotos, oblique photography three-dimensional models, laser point clouds, street view data, BIM data, and object elevation data.
4. The method of claim 2, wherein the mesh in the three-dimensional mesh map of the region changes when the property of the spatial object changes.
5. A method for implementing a planar grid data graph, comprising:
acquiring metadata information of a grid base map and a vector base map, and extracting spatial position information from the metadata information; determining a data subdivision level according to the use requirement or the data precision and a subdivision level strategy; generating Beidou grid codes corresponding to the data subdivision levels according to the spatial position information; and generating a plane grid layer corresponding to the Beidou grid code by adopting a grid map issuing engine.
6. The method according to claim 5, wherein each mesh of the planar mesh data map layer is a standard mesh, the mesh is recursively subdivided hierarchically by using a GeoSOT mesh subdivision method, and low-level meshes are grouped into high-level meshes according to the same codes of the previous bits; and the high-level grids are split into low-level grids through further subdivision and encoding.
7. A planar grid data diagram implementation apparatus, comprising:
the metadata acquisition module is used for acquiring metadata information of the grid base map and the vector base map and extracting spatial position information from the metadata information;
the data subdivision module is used for determining a data subdivision level according to the use requirement or the data precision and a subdivision level strategy;
the grid code generation module is used for generating Beidou grid codes corresponding to the data subdivision levels according to the spatial position information;
and the grid layer generating module is used for generating the Beidou grid code into a plane grid layer by adopting a grid map issuing engine.
8. An apparatus for implementing a three-dimensional mesh data map, comprising:
the data acquisition module is used for acquiring spatial position information from the original data;
the data subdivision module is used for determining a data subdivision level according to the use requirement or the data precision and a subdivision level strategy;
the mesh generation module is used for carrying out three-dimensional mesh generation structuralization processing on the space three-dimensional object according to the space position information and the determined data generation level to generate a three-dimensional logic generation mesh code and a mesh index large table;
and the grid map generation module is used for generating a regional three-dimensional grid map based on the three-dimensional logic subdivision grid codes and the grid index large table.
9. An electronic device for implementing a three-dimensional mesh data diagram, comprising:
a processor for executing a plurality of instructions;
a memory for storing a plurality of instructions;
wherein the plurality of instructions are to be stored by the memory and loaded and executed by the processor to implement the three-dimensional grid data graph implementation method of claims 1-4 or the planar grid data graph implementation method of claims 5-6.
10. A computer-readable storage medium having stored therein a plurality of instructions; the plurality of instructions for loading and executing by a processor the three-dimensional grid data graph implementation method of claims 1-4 or the planar grid data graph implementation method of claims 5-6.
CN202210596428.1A 2022-05-30 2022-05-30 Method and device for realizing grid data graph Pending CN115017348A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115906460A (en) * 2022-11-14 2023-04-04 北京市测绘设计研究院 Encoding method, encoding device, computer equipment and storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115906460A (en) * 2022-11-14 2023-04-04 北京市测绘设计研究院 Encoding method, encoding device, computer equipment and storage medium
CN115906460B (en) * 2022-11-14 2023-10-13 北京市测绘设计研究院 Encoding method, apparatus, computer device, and storage medium

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