CN111080782A - Visual system based on live-action three-dimensional geographic information system - Google Patents
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Abstract
The embodiment of the invention provides a visualization system based on a live-action three-dimensional geographic information system, which is based on live-action three-dimensional spatial data, has more vivid model effect and more comprehensive elements compared with two-dimensional and virtual three-dimensional data, and supports spatial measurement. Meanwhile, the WebGL technology enables the system to be more convenient to deploy and maintain and update, and after the server side updates for one time, the client side automatically completes updating.
Description
Technical Field
The invention relates to the technical field of geographic information, in particular to a visualization system based on a live-action three-dimensional geographic information system.
Background
Geographic information systems are sometimes also referred to as "geosciences information systems". It is a specific and very important spatial information system. The system is a technical system for collecting, storing, managing, operating, analyzing, displaying and describing geographic distribution data in the whole or partial earth surface space under the support of a computer hardware and software system, wherein a geographic information system is a comprehensive subject, combines geography and cartography, remote sensing and computer science, is widely applied to different fields and is a computer system for inputting, storing, inquiring, analyzing and displaying geographic data.
In recent years, three-dimensional real-scene modeling technology is widely applied, and with the development of information technology, the improvement of hardware performance and the support of various advanced algorithms, a three-dimensional geographic information system has been developed to be an important component of a world information system. The intelligent safety system is accepted by users in various industries, and is favored in the fields of urban planning management (smart cities), comprehensive security emergency, public safety (smart public security, fire protection and the like), military simulation, virtual tourism (smart tourism), intelligent transportation, ocean resource management, petroleum pipelines, wireless site selection and the like.
With the development of geographic information technology and computer technology, the three-dimensional live-action built by the oblique photography three-dimensional model becomes a geographic information application hotspot, and is a mainstream technology for urban management informatization construction. Compared with the traditional two-dimensional map, the live-action three-dimensional map has the advantages that continuous three-dimensional visual models and live-action images are added, seamless integration with other urban management platforms is achieved through a special three-dimensional data publishing service platform, a three-dimensional visual environment is provided for users, and user experience is improved.
At present, three-dimensional geographic information systems in the prior art are all based on a C/S framework, a user can use the system only by downloading and installing a corresponding client, the desktop three-dimensional GIS system has the limitations of difficult maintenance, complicated client upgrading work and the like, the three-dimensional geographic information systems based on the B/S framework are relatively few, most of the three-dimensional geographic information systems are based on a plug-in form, plug-ins are complicated to install, the compatibility problem exists, and the user experience is poor.
Disclosure of Invention
The embodiment of the invention provides a visual system and a frame based on a live-action three-dimensional geographic information system, which are used for solving the problems of bloated clients and complex deployment, can better support cross-platform, and make the display effect under the frame of the invention not weaker than the effect of the three-dimensional geographic information system in the prior art by utilizing the unique rendering mode of WebGL, so that the user experience is multiplied.
The embodiment of the invention provides a visual system based on a real-scene three-dimensional geographic information system, which comprises a client and a server, wherein a browser is installed in the client;
the client is used for sending a request for creating a target three-dimensional geographic virtual scene to the server, receiving spatial data returned by the server based on the request for creating the target three-dimensional geographic virtual scene, rendering the target three-dimensional geographic virtual scene based on the spatial data and a WebGL technology, and displaying the rendered target three-dimensional geographic virtual scene on the browser;
the server is used for receiving the request for creating the target three-dimensional geographic virtual scene, acquiring spatial data based on the request for creating the target three-dimensional geographic virtual scene, and sending the spatial data to the client.
Further, the client is further configured to:
analyzing the spatial data, and sending the analyzed spatial data to an engine of the browser, wherein the engine of the browser creates a drawing tree containing JavaScript codes based on the analyzed spatial data, and the JavaScript codes contain calls to WebGL API; and returning to an engine of the browser after the calling sentence detects the calling of the WebGL API, calling an OpenGL ES API, rendering the target three-dimensional geographic virtual scene based on the drawing tree, and displaying the rendered target three-dimensional geographic virtual scene on the browser.
Further, the server further comprises a Web server, a 3D GIS application sub-server and a database;
correspondingly, the client is further used for sending a request for acquiring application function data to the 3D GIS application sub-server based on the Web server;
and the 3D GIS application sub-server acquires the original data of the target application function data from the database based on the request for acquiring the target application function data, converts the original data of the target application function data into the target application function data, dynamically generates a Web page based on the target application function data through the Web server, and sends the Web page back to the client to complete the realization of the corresponding target application function.
Further, the database is further used for storing spatial data of a three-dimensional geographic information system; the spatial data includes at least three of: three-dimensional model data, image data, and terrain data.
Further, the database carries out hierarchical optimization scheduling on the image data and the terrain data to form a plurality of data pyramid models; one type of the data pyramid model comprises a plurality of data layers which are numbered consecutively, each data layer comprises a tile file which is subdivided according to rules, and each tile has preset attributes.
Further, the preset properties of the tile include at least one or more of: spatial resolution, spatial extent and row-column coding.
Further, the management system of the database adopts an open source database postgreSQL.
Further, the server is used for issuing the spatial data with different formats in the database and the data file to the client in a json form.
Further, the target application function is any one of the following:
a base map control function, a layer control function, a common tool function, a parameter setting function, a search query function, a view control function, and a state prompt function.
Further, the client is any one of the following: smart phones, tablet computers, notebook computers, and desktop computers.
The visualization system based on the live-action three-dimensional geographic information system provided by the embodiment of the invention is based on live-action three-dimensional spatial data, and compared with two-dimensional and virtual three-dimensional data, the visualization system has more vivid model effect and more comprehensive elements and supports spatial measurement; compared with the traditional WebGIS technology, the visualization system based on the live-action three-dimensional geographic information system is based on the WebGL technology, does not need any browser plug-in support, is realized by utilizing hardware of a local machine and a uniform, standard and cross-platform OpenGL interface during graphic rendering, and can run on various different devices. Meanwhile, the WebGL technology enables the system to be more convenient to deploy and maintain and update, and after the server side updates for one time, the client side automatically completes updating.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of a visualization system based on a live-action three-dimensional geographic information system according to the present invention;
fig. 2 is a schematic system architecture diagram of a visualization system based on a live-action three-dimensional geographic information system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Most of traditional geographic information system engines are C/S (client/server) architecture, developed based on C + +, too bulky in size, quite complex to deploy and incapable of supporting cross-platform. With the transition of the internet era, mobile internet becomes a mainstream trend, and the traditional three-dimensional application cannot meet the requirement, so that a light and cross-platform popular three-dimensional application is required to replace the traditional three-dimensional application.
WebGL technology is a technology used to draw and render complex three-dimensional graphics on a web page and allow a user to interact with it. The WebGL technology enables three-dimensional long scene display to be carried out on a browser, browser plug-ins do not need to be installed, the technology utilizes hardware on the bottom layer to accelerate rendering of the graphics, and rendering speed equivalent to that of a traditional desktop three-dimensional GIS system is achieved.
The embodiment of the invention provides a visualization system based on a real-scene three-dimensional geographic information system, which integrally comprises a client and a server, wherein a browser is installed in the client, as shown in fig. 1.
The client is used for sending a request for creating a target three-dimensional geographic virtual scene to the server, receiving spatial data returned by the server based on the request for creating the target three-dimensional geographic virtual scene, rendering the target three-dimensional geographic virtual scene based on the spatial data and a WebGL technology, and displaying the rendered target three-dimensional geographic virtual scene on the browser.
The server is used for receiving the request for creating the target three-dimensional geographic virtual scene, acquiring spatial data based on the request for creating the target three-dimensional geographic virtual scene, and sending the spatial data to the client.
The client is internally provided with a browser, and the browser is used for receiving an operation instruction of a user and displaying the rendered target three-dimensional geographic virtual scene. The client can be any one of the following: smart phones, tablet computers, notebook computers, and desktop computers.
The server side can comprise a plurality of sub-servers, such as a Web server, a business sub-server, a 3D GIS application sub-server and a database, and each sub-server respectively plays its own roles to jointly realize the functions of the server side in the embodiment of the invention.
Firstly, after a user makes a request for creating a target three-dimensional geographic virtual scene at a client, the client sends the request for creating the target three-dimensional geographic virtual scene to a server.
Secondly, the server receives the request for creating the target three-dimensional geographic virtual scene, acquires spatial data based on the request for creating the target three-dimensional geographic virtual scene, and sends the spatial data to the client.
Further, the client receives spatial data returned by the server based on the request for creating the target three-dimensional geographic virtual scene, renders the target three-dimensional geographic virtual scene based on the spatial data and the WebGL technology, and displays the rendered target three-dimensional geographic virtual scene on the browser.
The visualization system based on the live-action three-dimensional geographic information system provided by the embodiment of the invention is based on live-action three-dimensional spatial data, and compared with two-dimensional and virtual three-dimensional data, the visualization system has more vivid model effect and more comprehensive elements and supports spatial measurement; compared with the traditional WebGIS technology, the visualization system based on the live-action three-dimensional geographic information system is based on the WebGL technology, does not need any browser plug-in support, is realized by utilizing hardware of a local machine and a uniform, standard and cross-platform OpenGL interface during graphic rendering, and can run on various different devices. Meanwhile, the WebGL technology enables the system to be more convenient to deploy and maintain and update, and after the server side updates for one time, the client side automatically completes updating.
On the basis of the above embodiments of the present invention, a visualization system based on a live-action three-dimensional geographic information system is provided, where the client is further configured to:
analyzing the spatial data, and sending the analyzed spatial data to an engine of the browser, wherein the engine of the browser creates a drawing tree containing JavaScript codes based on the analyzed spatial data, and the JavaScript codes contain calls to WebGL API; and returning to an engine of the browser after the calling sentence detects the calling of the WebGL API, calling an OpenGL ES API, rendering the target three-dimensional geographic virtual scene based on the drawing tree, and displaying the rendered target three-dimensional geographic virtual scene on the browser.
It should be further noted that, when a three-dimensional scene is constructed by a conventional three-dimensional geographic information system, the rendering is mostly completed by calling a bottom-layer hardware device based on OpenGL and Direct3D or based on a three-dimensional rendering engine thereof, while the rendering is completed by directly calling the bottom-layer hardware device by JavaScript in the three-dimensional visual geographic information system based on the WebGL technology, which is specifically implemented by: the client sends a request to the server and analyzes the returned content, and the content reaches the browser engine through a network driver, a TCP/IP protocol stack and an HTTP protocol stack. The browser engine creates a drawing tree containing JavaScript codes, when the JavaScript codes contain calls to the WebGL API, the calling statements return to the browser engine, the OpenGL ES API is called, and the three-dimensional virtual scene is rendered and finally displayed on the browser.
The embodiment of the invention provides a visualization system based on a live-action three-dimensional geographic information system, which is based on a WebGL technology and does not need any browser plug-in support compared with the traditional WebGIS technology. When the graphics are rendered, the graphics are rendered by using hardware of a local machine and a uniform, standard and cross-platform OpenGL interface, and the graphics rendering method can be operated on various different devices. Meanwhile, the WebGL technology enables the system platform to be more convenient to deploy and more convenient to maintain and update, and after the server side is updated once, the client side automatically completes updating.
On the basis of any one of the embodiments of the present invention, a visualization system based on a live-action three-dimensional geographic information system is provided, wherein the server further includes a Web server, a 3D GIS application sub-server and a database;
correspondingly, the client is further used for sending a request for acquiring application function data to the 3D GIS application sub-server based on the Web server;
and the 3D GIS application sub-server acquires the original data of the target application function data from the database based on the request for acquiring the target application function data, converts the original data of the target application function data into the target application function data, dynamically generates a Web page based on the target application function data through the Web server, and sends the Web page back to the client to complete the realization of the corresponding target application function.
It is further noted that the server further implements 3D GIS application services based on the Web server, the 3D GIS application servant and the database, including service functions such as space measurement, space query, space analysis, etc., taking measuring the distance between two points in a scene as an example, a user sends a data request to the 3D GIS application servant through the Web server, the 3D GIS server obtains original data (tiles where the two points are located) from the database according to the request, then processes and generates data (longitude and latitude of the two points) required by the user, and dynamically generates a Web page through the Web server and sends the Web page back to the client to complete distance calculation.
The embodiment of the invention provides a visualization system based on a live-action three-dimensional geographic information system, which is used for realizing the application service of a 3D GIS based on a Web server, a 3D GIS application sub-server and a database.
On the basis of any one of the above embodiments of the present invention, a visualization system based on a live-action three-dimensional geographic information system is provided, and the database is further used for storing spatial data of the three-dimensional geographic information system; the spatial data includes at least three of: three-dimensional model data, image data, and terrain data.
It should be noted that the three-dimensional model data is data for each three-dimensional model in the realistic three-dimensional geographic information system, the image data is data for each image in the realistic three-dimensional geographic information system, and the terrain data is data for each terrain in the realistic three-dimensional geographic information system.
The embodiment of the invention provides a visualization system based on a live-action three-dimensional geographic information system, which is based on live-action three-dimensional spatial data, has more vivid model effect and more comprehensive elements compared with two-dimensional and virtual three-dimensional data, and supports spatial measurement.
On the basis of any one of the embodiments of the invention, a visualization system based on a live-action three-dimensional geographic information system is provided, and the database performs hierarchical optimization scheduling on image data and terrain data to form a plurality of data pyramid models; one type of the data pyramid model comprises a plurality of data layers which are numbered consecutively, each data layer comprises a tile file which is subdivided according to rules, and each tile has preset attributes.
It should be further noted that the database in the server may also be responsible for organization and management of spatial data such as three-dimensional models, images, terrain, and the like in the three-dimensional visual geographic information system. The pyramid model is formed by performing hierarchical optimization scheduling on the images and the topographic data. One type of data pyramid comprises a plurality of data layers numbered consecutively, one data layer comprising tile files divided according to a certain rule, each tile having certain spatial resolution, spatial range, row-column coding and other attributes. Therefore, the server can quickly locate and return the required tiles according to a specific request sent by the browser, and the rendering of the three-dimensional scene is completed.
The embodiment of the invention provides a visualization system based on a live-action three-dimensional geographic information system, wherein a database carries out hierarchical optimization scheduling on image data and topographic data to form a plurality of data pyramid models, so that the image data and the topographic data can be rapidly obtained, and the rapid rendering and display of a target three-dimensional geographic virtual scene are further realized.
On the basis of any one of the above embodiments of the present invention, there is provided a visualization system based on a live-action three-dimensional geographic information system, where the preset attributes of the tile at least include one or more of the following: spatial resolution, spatial extent and row-column coding.
On the basis of any one of the embodiments of the present invention, a visualization system based on a live-action three-dimensional geographic information system is provided, and the management system of the database employs an open source database PostgreSQL.
It should be further noted that the visualization system according to the embodiment of the present invention relates to spatial and attribute data, and a required database needs to support storage of two types of data, in particular, spatial data, and must support an efficient spatial analysis function, while considering economic cost. Therefore, the embodiment of the invention finally selects the source database PostgreSQL as the database management system, which can provide a good spatial information service function.
On the basis of any one of the above embodiments of the present invention, a visualization system based on a live-action three-dimensional geographic information system is provided, where the server is configured to issue spatial data in different formats in a database and a data file to the client in a json format.
JSON (JavaScript Object Notation) is a lightweight data exchange format. It stores and represents data in a text format that is completely independent of the programming language, based on a subset of ECMAScript (js specification set by the european computer association). The compact and clear hierarchy makes JSON an ideal data exchange language. The network transmission method is easy to read and write by people, is easy to analyze and generate by machines, and effectively improves the network transmission efficiency.
On the basis of any one of the above embodiments of the present invention, a visualization system based on a live-action three-dimensional geographic information system is provided, and the target application function is any one of the following functions: a base map control function, a layer control function, a common tool function, a parameter setting function, a search query function, a view control function, and a state prompt function. The function of each application function subdivision is as follows:
a base map switching function of performing switching control on base maps of all three-dimensional earth;
the terrain display function can control whether to display the terrain in the three-dimensional space or not through checking;
the three-dimensional model function can carry out display hiding control on loading of three-dimensional model data, and the three-dimensional model comprises an inclined model, an artificial model, a BIM (building information model), a building white model and other three-dimensional models;
the vector data function can be used for carrying out display hiding control on the loading of vector data, wherein the vector data comprises KML, DXF, SHP and other mainstream platform vector data;
the raster data function can be used for carrying out display hiding control on the loading of raster data, wherein the raster data comprises common images, DOM, OGC WMS service data and ArcGIS service data;
the auxiliary layer function can be used for carrying out display and hiding control on the loading of auxiliary layer data, such as graticules and other temporary data;
the function of the topographic layer can be used for carrying out display and hiding control on the loading of topographic data, such as DEM
The map base map function can carry out display and hiding control on loading of base map data, such as a sky map, Google, Microsoft, an off-line map and the like;
the function of on-graph measurement, which provides distance, area, angle, height and triangulation functions, and can dynamically switch units to display different results;
the coordinate positioning function is used for picking up coordinate points on a map and acquiring the xyz coordinate values of the coordinate points; inputting coordinate values, and positioning on a map;
the my marking function can mark point data on the graph at will, set names, remark information and marked data, and store the data into a file, and can also open the previously stored file again. The draggable icon modifies the mark position;
the view bookmark function can save the current view of the map as a bookmark, and the bookmark item can be quickly switched to the recording view area by clicking the bookmark item;
the map comparison function can compare different base maps according to upper, lower, left and right screens, and can synchronously drag;
the plotting function on the map can perform two-dimensional and three-dimensional plotting on the map, such as characters, picture points, font icon points, broken lines, polygons, rectangles, circles, pictures and three-dimensional models, and can set related parameter styles and edit and delete the relevant parameter styles;
the space analysis function can provide analysis functions for space elements and data, including buffer analysis, view field analysis, sunshine analysis and square analysis for data sets and geometric objects;
the regional navigation function can perform regional positioning navigation according to three-level administrative districts of province, city and county;
the flight roaming function can preset and define a roaming route, and when a roaming route item is clicked, the roaming can be automatically played according to the route;
a map printing function that can print a map area or export the map area as a picture;
and the atmosphere rendering function can control whether to start the atmosphere rendering effect of the earth through checking. The effect of the atmosphere can be seen after the door is opened;
and the illumination rendering function can control whether to start the illumination rendering effect of the earth or not through checking. After the system is started, the rendering of the daytime and night region of the earth and the lighting shadow rendering of the model mountain peak can be seen;
the depth detection function can control whether the start vector data is visible under the terrain or not through checking, and the data under the terrain cannot be seen after the start;
the keyboard control function can control whether to start the keyboard control through checking, and the keyboard shortcut key operation can be realized after the keyboard control is started;
the search query function can be used for carrying out location name address location query through key words and locating and querying related interest point data through other online POI services;
the compass navigation function prompts the current three-dimensional visual angle and can click or drag to switch the three-dimensional visual angle;
resetting the view function, and returning to the main view by clicking the button;
a view switching function, wherein the two-dimensional three-dimensional view can be switched by clicking the button;
full screen function, the view can be displayed in full screen by clicking the button;
the help function can be used for checking help information such as interactive operation, system version and the like of the three-dimensional earth by clicking the button;
and the status bar function is that information prompt contents including the current scale, the longitude and latitude where the mouse is located, elevation information and view height information are arranged in the lower side area of the system page.
The above functions are only platform basic functions required for research requirements, and do not represent all functions of the embodiments of the present invention.
Further, a system architecture of any one of the visualization systems based on the real-world three-dimensional geographic information system of the present invention is specifically described, as shown in fig. 2, a schematic diagram of the system architecture of the visualization system based on the real-world three-dimensional geographic information system of the present invention is shown.
The system architecture of the visualization system based on the live-action three-dimensional geographic information system provided by the embodiment of the invention is as follows in sequence: the system comprises a data layer, a data service layer, a business logic layer, a presentation layer and an application layer:
and (3) a data layer: storing, managing, designing and constructing various data resources;
a data service layer: providing persistent scheduling service of various data;
and a service logic layer: the main business logic of the system platform comprises a space analysis algorithm, data logic processing and service scheduling logic;
a presentation layer: the system platform can display multi-source geographic space data through two-dimensional and three-dimensional visual expression of the geographic space data, and can realize an application mode of the multi-source data without plug-ins and crossing platforms;
an application layer: and (3) taking actual application of related industries or fields as guidance, customizing the application according to the needs of users, and displaying and expressing related system functions.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A visualization system based on a live-action three-dimensional geographic information system is characterized by comprising a client and a server, wherein a browser is installed in the client;
the client is used for sending a request for creating a target three-dimensional geographic virtual scene to the server, receiving spatial data returned by the server based on the request for creating the target three-dimensional geographic virtual scene, rendering the target three-dimensional geographic virtual scene based on the spatial data and a WebGL technology, and displaying the rendered target three-dimensional geographic virtual scene on the browser;
the server is used for receiving the request for creating the target three-dimensional geographic virtual scene, acquiring spatial data based on the request for creating the target three-dimensional geographic virtual scene, and sending the spatial data to the client.
2. A realistic three-dimensional geographic information system based visualization system according to claim 1 wherein the client is further configured to:
analyzing the spatial data, and sending the analyzed spatial data to an engine of the browser, wherein the engine of the browser creates a drawing tree containing JavaScript codes based on the analyzed spatial data, and the JavaScript codes contain calls to WebGL API; and returning to an engine of the browser after the calling sentence detects the calling of the WebGL API, calling an OpenGL ES API, rendering the target three-dimensional geographic virtual scene based on the drawing tree, and displaying the rendered target three-dimensional geographic virtual scene on the browser.
3. The visualization system based on the live-action three-dimensional geographic information system as claimed in claim 1, wherein the server further comprises a Web server, a 3D GIS application sub-server and a database;
correspondingly, the client is further used for sending a request for acquiring application function data to the 3D GIS application sub-server based on the Web server;
and the 3D GIS application sub-server acquires the original data of the target application function data from the database based on the request for acquiring the target application function data, converts the original data of the target application function data into the target application function data, dynamically generates a Web page based on the target application function data through the Web server, and sends the Web page back to the client to complete the realization of the corresponding target application function.
4. A realistic three-dimensional geographical information system based visualization system according to claim 3, characterized in that the database is further used to store spatial data of a three-dimensional geographical information system; the spatial data includes at least three of: three-dimensional model data, image data, and terrain data.
5. The visualization system based on the live-action three-dimensional geographic information system as claimed in claim 4, wherein the database performs hierarchical optimization scheduling on the image data and the terrain data to form a plurality of data pyramid models; one type of the data pyramid model comprises a plurality of data layers which are numbered consecutively, each data layer comprises a tile file which is subdivided according to rules, and each tile has preset attributes.
6. A visualization system as claimed in claim 5, wherein the preset attributes of the tiles include at least one or more of: spatial resolution, spatial extent and row-column coding.
7. A realistic three dimensional geographic information system based visualization system according to claim 5 where the database management system employs an open source database PostgreSQL.
8. The visualization system based on the live-action three-dimensional geographic information system as claimed in claim 5, wherein the server is configured to publish spatial data in different formats in databases and data files to the client in json form.
9. A visualization system based on a live-action three-dimensional geographic information system as claimed in claim 3, wherein the target application function is any one of the following:
a base map control function, a layer control function, a common tool function, a parameter setting function, a search query function, a view control function, and a state prompt function.
10. A visualization system as claimed in any one of claims 1 to 9, wherein the client is any one of the following: smart phones, tablet computers, notebook computers, and desktop computers.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111581323A (en) * | 2020-05-18 | 2020-08-25 | 中国科学院自动化研究所 | Two/three-dimensional geographic space display method and system |
| CN111815759A (en) * | 2020-06-18 | 2020-10-23 | 广州建通测绘地理信息技术股份有限公司 | Measurable live-action picture generation method and device, and computer equipment |
| CN111986306A (en) * | 2020-08-11 | 2020-11-24 | 北京瑞晟成科技发展有限公司 | Integrated data display and simulation platform |
| CN112256790A (en) * | 2020-10-19 | 2021-01-22 | 湖北泰跃卫星技术发展股份有限公司 | WebGL-based three-dimensional visualization display system and data visualization method |
| CN113806654A (en) * | 2021-09-26 | 2021-12-17 | 河北萁斗网络科技有限公司 | Virtual space system based on geographic information |
| CN114491351A (en) * | 2022-04-18 | 2022-05-13 | 北京航空航天大学杭州创新研究院 | Lattice point data visualization method and system adaptable to WebGIS platform |
| CN114513520A (en) * | 2021-12-27 | 2022-05-17 | 浙江中测新图地理信息技术有限公司 | Web three-dimensional visualization technology based on synchronous rendering of client and server |
| CN114546577A (en) * | 2022-03-04 | 2022-05-27 | 北京超图软件股份有限公司 | Data visualization method and system |
| CN114546577B (en) * | 2022-03-04 | 2024-04-26 | 北京超图软件股份有限公司 | Data visualization method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364523A (en) * | 2011-05-11 | 2012-02-29 | 武汉理工大学 | Method for realizing three-dimensional virtual city system based on RIA (rich Internet application) architecture |
| CN105117965A (en) * | 2015-09-22 | 2015-12-02 | 中国科学院上海高等研究院 | Management method and management system for history and culture information data, and server |
| CN106843877A (en) * | 2017-01-20 | 2017-06-13 | 中译语通科技（北京）有限公司 | A kind of data analysing method presented based on the earth and its system |
| CN109360287A (en) * | 2018-03-27 | 2019-02-19 | 浙江华云电力工程设计咨询有限公司 | Transmission line of electricity three-dimensional digital fortune inspection management system |
-
2019
- 2019-10-17 CN CN201910986794.6A patent/CN111080782A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364523A (en) * | 2011-05-11 | 2012-02-29 | 武汉理工大学 | Method for realizing three-dimensional virtual city system based on RIA (rich Internet application) architecture |
| CN105117965A (en) * | 2015-09-22 | 2015-12-02 | 中国科学院上海高等研究院 | Management method and management system for history and culture information data, and server |
| CN106843877A (en) * | 2017-01-20 | 2017-06-13 | 中译语通科技（北京）有限公司 | A kind of data analysing method presented based on the earth and its system |
| CN109360287A (en) * | 2018-03-27 | 2019-02-19 | 浙江华云电力工程设计咨询有限公司 | Transmission line of electricity three-dimensional digital fortune inspection management system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111581323A (en) * | 2020-05-18 | 2020-08-25 | 中国科学院自动化研究所 | Two/three-dimensional geographic space display method and system |
| CN111815759A (en) * | 2020-06-18 | 2020-10-23 | 广州建通测绘地理信息技术股份有限公司 | Measurable live-action picture generation method and device, and computer equipment |
| CN111986306A (en) * | 2020-08-11 | 2020-11-24 | 北京瑞晟成科技发展有限公司 | Integrated data display and simulation platform |
| CN112256790A (en) * | 2020-10-19 | 2021-01-22 | 湖北泰跃卫星技术发展股份有限公司 | WebGL-based three-dimensional visualization display system and data visualization method |
| CN113806654A (en) * | 2021-09-26 | 2021-12-17 | 河北萁斗网络科技有限公司 | Virtual space system based on geographic information |
| CN114513520A (en) * | 2021-12-27 | 2022-05-17 | 浙江中测新图地理信息技术有限公司 | Web three-dimensional visualization technology based on synchronous rendering of client and server |
| CN114546577A (en) * | 2022-03-04 | 2022-05-27 | 北京超图软件股份有限公司 | Data visualization method and system |
| CN114546577B (en) * | 2022-03-04 | 2024-04-26 | 北京超图软件股份有限公司 | Data visualization method and system |
| CN114491351A (en) * | 2022-04-18 | 2022-05-13 | 北京航空航天大学杭州创新研究院 | Lattice point data visualization method and system adaptable to WebGIS platform |
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