CN112256790A - WebGL-based three-dimensional visualization display system and data visualization method - Google Patents
WebGL-based three-dimensional visualization display system and data visualization method Download PDFInfo
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Abstract
The embodiment of the invention provides a WebGL-based three-dimensional visualization display system and a data visualization method, wherein the three-dimensional visualization display system comprises a data processing and tool module, a 3DGIS engine module and a visualization engine module; the 3DGIS engine module is used for acquiring the geographic spatial data and generating a 3DGIS map based on the geographic spatial data; the visualization engine module is used for acquiring the 3DGIS map, the charts and various numerical parameter information after statistical analysis, fusing the charts and various numerical parameter information after statistical analysis by taking the 3DGIS map as a base map, superposing the charts and various numerical parameter information after statistical analysis on the base map, and performing visualization display in a three-dimensional form. The invention realizes a three-dimensional GIS visualization system and provides an effective solution for related applications.
Description
Technical Field
The invention relates to the technical field of big data analysis, in particular to a three-dimensional visualization display system and a data visualization method based on WebGL.
Background
With the rapid development of current information technology, data information in various industry fields has been shifted from single to multi-dimensional. Especially in the big data era, complex multidimensional information is contained in massive data, and the visualization of the multidimensional information is usually realized by converting the data into two-dimensional or three-dimensional graphs which are easy to understand. However, the traditional single statistical mode of the two-dimensional graph is difficult to meet the actual requirement, and a user cannot intuitively acquire accurate cognition of the multi-dimensional information. Therefore, a three-dimensional visualization technology capable of displaying more dimensional information by layer overlay is receiving wide attention from various industries. Meanwhile, researches show that the colorful and dynamic three-dimensional graphic images can cause visual reaction, so that the main purpose of information transmission through data visualization is achieved.
In the development of three-dimensional visualization, various 3D techniques are developed. Conventional Web3D technologies include: VRML, Java3D, and O3 d. The conventional Web3D technology has the following disadvantages: (1) browser plug-ins need to be installed or third party components introduced. (2) The platform compatibility is poor, and the development efficiency is low. (3) Hardware acceleration is not supported, and the rendering of large-scale complex 3D scenes is difficult to be competent.
At present, the expression mode of the geographic space information is still two-dimensional, the transmission of the data information is abstract, and the data information is not beneficial to propagation. The space geographic object is visualized in a three-dimensional mode, the actual situation of the space geographic object is better fitted, and efficient information transmission is facilitated. At present, many software suppliers at home and abroad begin to lay out three-dimensional GIS, and the GIS has a large number of products with rich functions, but is still insufficient in the aspects of industrial application depth and expandability.
Disclosure of Invention
The embodiment of the invention provides a three-dimensional visualization display system and a data visualization method based on WebGL, which are used for solving at least one technical problem.
The embodiment of the invention provides a three-dimensional visual display system based on WebGL, which comprises a data processing and tool module, a 3DGIS engine module and a visual engine module;
the data processing and tool module is used for preprocessing, sorting and classifying the acquired original data, and extracting target data for storage after sorting and classifying the data; the target data at least comprises geospatial data, charts and various numerical parameter information after statistical analysis;
the 3DGIS engine module is used for acquiring geographic spatial data and generating a 3DGIS map based on the geographic spatial data;
the visualization engine module is used for acquiring the 3DGIS map, the charts and various statistically analyzed numerical parameter information, fusing the charts and various statistically analyzed numerical parameter information by taking the 3DGIS map as a base map, superposing the charts and various statistically analyzed numerical parameter information on the base map, and performing visualization display in a three-dimensional form.
Furthermore, the three-dimensional visual display system is characterized by further comprising a system UI and a management module, wherein the system UI and the management module are used for providing a visual UI interactive interface so that a user can realize management, data management and user authority management of the visual interface.
Further, the three-dimensional visualization presentation system is characterized by further comprising a screen display module for presenting a visualization interface.
Further, the data processing and tool module further comprises: a data processing unit and a conversion tool unit;
the data processing unit is used for processing the acquired original data into a standard data type according to requirements so as to read and convert a visual chart;
the conversion tool unit is used for converting the interactive query operation input by the user into a standard query statement of a background database so as to allow the three-dimensional visual display system to perform data query operation; furthermore, the conversion tool unit is also integrated with at least one type of service data conversion program for data intercommunication between other system platforms and the three-dimensional visual display system.
Further, the 3DGIS engine module further comprises: the system comprises a three-dimensional space browsing unit, a space data management unit and a space analysis algorithm unit;
the three-dimensional space browsing unit is used for realizing real-time browsing, amplifying, reducing, rotating and dragging operations of a three-dimensional space scene at any angle;
the spatial data management unit is used for realizing the multi-dimensional data hierarchical management, various three-dimensional browsing modes, and the visualization functions of a road network and a building based on a real-scene three-dimensional model and a virtual three-dimensional model, and supporting the integration and display of two three dimensions;
the space analysis algorithm is used for realizing the functions of measurement, positioning query, visual field analysis and full-view analysis based on the three-dimensional scene.
Further, the visualization engine module comprises a resource visualization control unit, a chart visualization display unit and a data analysis algorithm unit;
the resource visualization control unit is used for realizing layering management on spatial data comprising a three-dimensional model, a two-dimensional vector and a POI (point of interest), and controlling the visualization display of the spatial data in a three-dimensional spatial scene;
the chart visualization display unit comprises a data chart display function and is used for visually displaying background data in a two-dimensional and three-dimensional chart mode based on a system data analysis algorithm, and simultaneously supports an open source visualization chart library, and provides a conventional broken line chart, a bar chart, a pie chart and a K line chart, as well as a map and a line chart for geographical data visualization;
the data analysis algorithm unit is used for providing algorithm logic and a program for professional calculation analysis of business data, and simultaneously providing a visual data analysis function based on a three-dimensional GIS map, and can be used for connecting Internet map products such as Google and Baidu and further improving the visual accuracy of the system by combining uploaded longitude and latitude information, tracks, labels and chart effects.
Furthermore, the system UI and management module comprises a graphical man-machine interaction processing unit, a visual page management and control unit and a permission management unit;
the graphical man-machine interaction processing unit comprises a function menu and a visual chart folding and unfolding function, realizes the display of a system operation interface in a graphical mode, feeds back the operation result of a user, and presents the fed-back result to the user in a graphical mode;
the visual page control unit comprises a page control function and is used for realizing overall folding and unfolding display, 2D/3D scene switching, visual angle initialization, page style switching and multi-scene page switching of a visual chart;
the authority management unit provides a system login interface and login verification, and realizes the functions of user login control, user account management, user login authority management and log information inquiry.
In another aspect of the embodiments of the present invention, a data visualization method is provided, which includes the following steps:
preprocessing, sorting and classifying the acquired original data, and extracting target data for storage after sorting and classifying the data; the target data at least comprises geospatial data, charts and various numerical parameter information after statistical analysis;
acquiring geospatial data, and generating a 3DGIS map based on the geospatial data;
the method comprises the steps of obtaining a 3DGIS map, graphs and various statistically analyzed numerical parameter information, fusing the graphs and the various statistically analyzed numerical parameter information by taking the 3DGIS map as a base map, superposing the graphs and the various statistically analyzed numerical parameter information on the base map, and performing visual display in a three-dimensional form.
In another aspect of the embodiments of the present invention, a server is provided, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the steps of the data visualization method.
In yet another aspect of embodiments of the present invention, a non-transitory computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, implements the steps of the data visualization method as described above.
The embodiment of the invention provides a WebGL-based three-dimensional visualization display system and a data visualization method, wherein the three-dimensional visualization display system comprises a data processing and tool module, a 3DGIS engine module and a visualization engine module; the data processing and tool module is used for preprocessing, sorting and classifying the acquired original data, and extracting target data for storage after sorting and classifying the data; the target data at least comprises geospatial data, charts and various numerical parameter information after statistical analysis; the 3DGIS engine module is used for acquiring geographic spatial data and generating a 3DGIS map based on the geographic spatial data; the visualization engine module is used for acquiring the 3DGIS map, the charts and various statistically analyzed numerical parameter information, fusing the charts and various statistically analyzed numerical parameter information by taking the 3DGIS map as a base map, superposing the charts and various statistically analyzed numerical parameter information on the base map, and performing visualization display in a three-dimensional form.
Compared with the traditional Web3D technology, the system platform in the embodiment of the invention is based on the WebGL technology, can realize high-performance rendering of graphics by utilizing hardware acceleration, can support large-scale rendering, has better cross-platform performance, and does not need to install any browser plug-in. In addition, the WebGL technology enables the system platform to be more convenient to deploy and more convenient to maintain and update.
The system platform is mainly based on the 3DGIS technology, two-dimensional data and three-dimensional data are fused at the same time, various data engines are developed and integrated, two-dimensional and three-dimensional integrated multi-source data visualization display is finally achieved, and the display form and the data type are rich and diverse and are more visual.
The system platform integrates the storage and analysis technology of big data, adopts a distributed storage mode to store massive two-three-dimensional space data, image-text data and the like, and combines the space data analysis and big data analysis algorithm developed by professions to realize the preprocessing and various analysis services provided for the data of different types and dimensions.
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 overall structure diagram of a WebGL-based three-dimensional visualization presentation system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a WebGL-based three-dimensional visualization presentation system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a server structure according to an embodiment of 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.
With the rapid development of current information technology, data information in various industry fields has been shifted from single to multi-dimensional. Especially in the big data era, complex multidimensional information is contained in massive data, and the visualization of the multidimensional information is usually realized by converting the data into two-dimensional or three-dimensional graphs which are easy to understand. However, the traditional single statistical mode of the two-dimensional graph is difficult to meet the actual requirement, and a user cannot intuitively acquire accurate cognition of the multi-dimensional information. Therefore, a three-dimensional visualization technology capable of displaying more dimensional information by layer overlay is receiving wide attention from various industries. Meanwhile, researches show that the colorful and dynamic three-dimensional graphic images can cause visual reaction, so that the main purpose of information transmission through data visualization is achieved.
In the development of three-dimensional visualization, various 3D techniques are developed. Conventional Web3D technologies include: VRML, Java3D, and O3 d. The conventional Web3D technology has the following disadvantages: (1) browser plug-ins need to be installed or third party components introduced. (2) The platform compatibility is poor, and the development efficiency is low. (3) Hardware acceleration is not supported, and the rendering of large-scale complex 3D scenes is difficult to be competent. Therefore, the WebGL technology capable of realizing browser-side three-dimensional view plug-in exemption will be one of the development directions of the future three-dimensional technology. The WebGL specification is a new-generation Web3D graphic standard, so that a browser does not need to be provided with any plug-in, the compatibility is strong, GPU acceleration is supported, and the support of mainstream browser manufacturers is obtained. And due to the design, the working layer is the bottom layer display card, and the realization is more complex compared with other traditional 3D technologies, so that a large amount of calculation can be rapidly completed, and the rendering effect is good.
At present, the expression mode of the geographic space information is still two-dimensional, the transmission of the data information is abstract, and the data information is not beneficial to propagation. The space geographic object is visualized in a three-dimensional mode, the actual situation of the space geographic object is better fitted, and efficient information transmission is facilitated. At present, many software suppliers at home and abroad begin to lay out three-dimensional GIS, and the GIS has a large number of products with rich functions, but is still insufficient in the aspects of industrial application depth and expandability. The invention is based on three-dimensional visualization technology, designs and realizes a set of three-dimensional GIS visualization system from the aspects of solving three-dimensional GIS data expression, spatial analysis, application depth and the like, and provides an effective solution for related applications.
In order to solve at least one problem in the prior art, the embodiment of the invention is based on a three-dimensional visualization technology, and designs and implements a set of three-dimensional GIS visualization system from the aspects of solving three-dimensional GIS data expression, spatial analysis, application depth and the like, thereby providing an effective solution for related applications.
The embodiment of the invention provides a three-dimensional visualization display system based on WebGL, and as shown in FIG. 1, the three-dimensional visualization display system comprises a data processing and tool module 10, a 3DGIS engine module 11 and a visualization engine module 12.
The data processing and tool module 10 is configured to perform preprocessing, sorting and classifying on the acquired original data, and extract target data from the data for storage after sorting and classifying the data; the target data at least comprises geospatial data, charts and various numerical parameter information after statistical analysis.
Wherein, it needs to further explain that: the data processing and tool module further comprises a data processing unit and a conversion tool unit.
The data processing unit is mainly used for processing the data calculated and analyzed by the system into a standard data type according to requirements, so that the visual chart can be read and converted conveniently, the data processing unit can convert the data of different data sources into the data type with a standard uniform format and provide the data type to the data conversion unit;
the conversion tool unit is mainly used for converting the interactive query operation of a front-end user into a standard query statement of a background database so as to facilitate the data query operation of the system, and meanwhile, the unit is also integrated with various types of service data conversion programs so as to facilitate the data intercommunication between other system platforms and the system.
The 3DGIS engine module 11 is configured to obtain geospatial data, and generate a 3DGIS map based on the geospatial data.
Wherein, it needs to further explain that: the 3DGIS engine module further comprises a three-dimensional space browsing unit, a space data management unit and a space analysis algorithm unit.
The three-dimensional space browsing unit is mainly used for realizing operations such as real-time browsing, amplification, reduction, rotation, dragging and the like of a three-dimensional space scene at any angle;
the spatial data management unit is mainly used for realizing the multi-dimensional data hierarchical management, various three-dimensional browsing modes, and the visualization functions of a road network and a building based on a real-scene three-dimensional model and a virtual three-dimensional model, and supporting the integration and display of two three dimensions;
the space analysis algorithm unit mainly has the function of realizing measurement, positioning query, vision field analysis, full-view analysis and the like based on a three-dimensional scene.
The visualization engine module 12 is configured to obtain the 3DGIS map and the charts and various statistically analyzed numerical parameter information, fuse the charts and various statistically analyzed numerical parameter information with the 3DGIS map as a base map, superimpose the charts and various statistically analyzed numerical parameter information on the base map, and perform visualization display in a three-dimensional manner.
Wherein, it needs to further explain that: the visualization engine module 12 further includes a resource visualization control module, a chart visualization display module, and a data analysis algorithm module.
The resource visualization control module is mainly used for realizing the layering management of spatial data such as a three-dimensional model, a two-dimensional vector, a POI (point of interest) and the like and controlling the visualization display of the spatial data in a three-dimensional spatial scene;
the chart visualization display module comprises a data chart display function, realizes visualization display of background data in a two-dimensional and three-dimensional chart mode based on a system data analysis algorithm, simultaneously supports open source visualization chart libraries such as ECharts and HightChars, and can provide conventional broken line charts, bar charts, pie charts, K line charts, maps and line charts for visualization of geographic data and the like;
the data analysis algorithm module mainly has the functions of providing algorithm logic and programs for professional calculation and analysis of various service data, providing a visual data analysis function based on a three-dimensional GIS map, being capable of connecting Internet map products such as Google and Baidu, and further improving the visual accuracy of the system by combining uploaded longitude and latitude information, tracks, labels, charts and the like.
The embodiment of the invention provides a WebGL-based three-dimensional visualization display system and a data visualization method, wherein the three-dimensional visualization display system comprises a data processing and tool module, a 3DGIS engine module and a visualization engine module; the data processing and tool module is used for preprocessing, sorting and classifying the acquired original data, and extracting target data for storage after sorting and classifying the data; the target data at least comprises geospatial data, charts and various numerical parameter information after statistical analysis; the 3DGIS engine module is used for acquiring geographic spatial data and generating a 3DGIS map based on the geographic spatial data; the visualization engine module is used for acquiring the 3DGIS map, the charts and various statistically analyzed numerical parameter information, fusing the charts and various statistically analyzed numerical parameter information by taking the 3DGIS map as a base map, superposing the charts and various statistically analyzed numerical parameter information on the base map, and performing visualization display in a three-dimensional form.
Compared with the traditional Web3D technology, the system platform in the embodiment of the invention is based on the WebGL technology, can realize high-performance rendering of graphics by utilizing hardware acceleration, can support large-scale rendering, has better cross-platform performance, and does not need to install any browser plug-in. In addition, the WebGL technology enables the system platform to be more convenient to deploy and more convenient to maintain and update.
The system platform is mainly based on the 3DGIS technology, two-dimensional data and three-dimensional data are fused at the same time, various data engines are developed and integrated, two-dimensional and three-dimensional integrated multi-source data visualization display is finally achieved, and the display form and the data type are rich and diverse and are more visual.
The system platform integrates the storage and analysis technology of big data, adopts a distributed storage mode to store massive two-three-dimensional space data, image-text data and the like, and combines the space data analysis and big data analysis algorithm developed by professions to realize the preprocessing and various analysis services provided for the data of different types and dimensions.
On the basis of the above embodiment of the present invention, a three-dimensional visualization presentation system based on WebGL is provided, which further includes a system UI and a management module, where the system UI and the management module are used to provide a visualization UI interaction interface for a user to implement management, data management, and user right management on the visualization interface.
It should be further explained that the system UI and the management module further include a graphical human-computer interaction processing unit, a visual page management and control unit, and a right management unit.
The graphical man-machine interaction processing unit comprises functions of a function menu, a visual chart folding and unfolding and the like, realizes the display of a system operation interface in a graphical mode, feeds back operation results of a user, and presents the fed-back results to the user in a graphical mode;
the visual page control unit has a page control function and realizes the whole folding and unfolding display of a visual chart, 2D/3D scene switching, visual angle initialization, page style switching, multi-scene page switching and the like;
the authority management unit provides a system login interface and login verification, and realizes functions of user login control, user account management, user login authority management, log information query and the like.
The three-dimensional visualization presentation system provided by the embodiment of the invention is based on a three-dimensional visualization technology, and is designed and realized from the aspects of solving three-dimensional GIS data expression, space analysis, application depth and the like, so that an effective solution is provided for related applications.
On the basis of any one of the above embodiments of the present invention, a three-dimensional visualization presentation system based on WebGL is provided, and the system further includes a screen display module for displaying a visualization interface.
The three-dimensional visualization presentation system provided by the embodiment of the invention is based on a three-dimensional visualization technology, and is designed and realized from the aspects of solving three-dimensional GIS data expression, space analysis, application depth and the like, so that an effective solution is provided for related applications.
On the basis of any of the foregoing embodiments of the present invention, a three-dimensional visualization presentation system based on WebGL is provided, where the data processing and tool module further includes: a data processing unit and a conversion tool unit;
the data processing unit is used for processing the acquired original data into a standard data type according to requirements so as to read and convert a visual chart;
the conversion tool unit is used for converting the interactive query operation input by the user into a standard query statement of a background database so as to allow the three-dimensional visual display system to perform data query operation; furthermore, the conversion tool unit is also integrated with at least one type of service data conversion program for data intercommunication between other system platforms and the three-dimensional visual display system.
The three-dimensional visualization presentation system provided by the embodiment of the invention is based on a three-dimensional visualization technology, and is designed and realized from the aspects of solving three-dimensional GIS data expression, space analysis, application depth and the like, so that an effective solution is provided for related applications.
On the basis of any one of the foregoing embodiments of the present invention, there is provided a three-dimensional visualization presentation system based on WebGL, where the 3DGIS engine module further includes: the system comprises a three-dimensional space browsing unit, a space data management unit and a space analysis algorithm unit;
the three-dimensional space browsing unit is used for realizing real-time browsing, amplifying, reducing, rotating and dragging operations of a three-dimensional space scene at any angle;
the spatial data management unit is used for realizing the multi-dimensional data hierarchical management, various three-dimensional browsing modes, and the visualization functions of a road network and a building based on a real-scene three-dimensional model and a virtual three-dimensional model, and supporting the integration and display of two three dimensions;
the space analysis algorithm is used for realizing the functions of measurement, positioning query, visual field analysis and full-view analysis based on the three-dimensional scene.
The three-dimensional visualization presentation system provided by the embodiment of the invention is based on a three-dimensional visualization technology, and is designed and realized from the aspects of solving three-dimensional GIS data expression, space analysis, application depth and the like, so that an effective solution is provided for related applications.
On the basis of any one of the above embodiments of the present invention, a three-dimensional visualization presentation system based on WebGL is provided,
the three-dimensional visualization presentation system provided by the embodiment of the invention is based on a three-dimensional visualization technology, and is designed and realized from the aspects of solving three-dimensional GIS data expression, space analysis, application depth and the like, so that an effective solution is provided for related applications.
On the basis of any one of the above specific embodiments of the present invention, a three-dimensional visualization display system based on WebGL is provided, where the visualization engine module includes a resource visualization control unit, a chart visualization display unit, and a data analysis algorithm unit;
the resource visualization control unit is used for realizing layering management on spatial data comprising a three-dimensional model, a two-dimensional vector and a POI (point of interest), and controlling the visualization display of the spatial data in a three-dimensional spatial scene;
the chart visualization display unit comprises a data chart display function and is used for visually displaying background data in a two-dimensional and three-dimensional chart mode based on a system data analysis algorithm, and simultaneously supports an open source visualization chart library, and provides a conventional broken line chart, a bar chart, a pie chart and a K line chart, as well as a map and a line chart for geographical data visualization;
the data analysis algorithm unit is used for providing algorithm logic and a program for professional calculation analysis of business data, and simultaneously providing a visual data analysis function based on a three-dimensional GIS map, and can be used for connecting Internet map products such as Google and Baidu and further improving the visual accuracy of the system by combining uploaded longitude and latitude information, tracks, labels and chart effects.
The three-dimensional visualization presentation system provided by the embodiment of the invention is based on a three-dimensional visualization technology, and is designed and realized from the aspects of solving three-dimensional GIS data expression, space analysis, application depth and the like, so that an effective solution is provided for related applications.
On the basis of any one of the above embodiments of the present invention, a three-dimensional visual display system based on WebGL is provided, where the system UI and the management module include a graphical human-computer interaction processing unit, a visual page management and control unit, and a rights management unit;
the graphical man-machine interaction processing unit comprises a function menu and a visual chart folding and unfolding function, realizes the display of a system operation interface in a graphical mode, feeds back the operation result of a user, and presents the fed-back result to the user in a graphical mode;
the visual page control unit comprises a page control function and is used for realizing overall folding and unfolding display, 2D/3D scene switching, visual angle initialization, page style switching and multi-scene page switching of a visual chart;
the authority management unit provides a system login interface and login verification, and realizes the functions of user login control, user account management, user login authority management and log information inquiry.
The three-dimensional visualization presentation system provided by the embodiment of the invention is based on a three-dimensional visualization technology, and is designed and realized from the aspects of solving three-dimensional GIS data expression, space analysis, application depth and the like, so that an effective solution is provided for related applications.
On the basis of any of the above embodiments of the present invention, there is provided a data visualization method, including the steps of:
preprocessing, sorting and classifying the acquired original data, and extracting target data for storage after sorting and classifying the data; the target data at least comprises geospatial data, charts and various numerical parameter information after statistical analysis;
acquiring geospatial data, and generating a 3DGIS map based on the geospatial data;
the method comprises the steps of obtaining a 3DGIS map, graphs and various statistically analyzed numerical parameter information, fusing the graphs and the various statistically analyzed numerical parameter information by taking the 3DGIS map as a base map, superposing the graphs and the various statistically analyzed numerical parameter information on the base map, and performing visual display in a three-dimensional form.
The data visualization method provided by the embodiment of the invention designs and realizes a set of three-dimensional GIS visualization system from the aspects of solving three-dimensional GIS data expression, spatial analysis, application depth and the like, and provides an effective solution for related applications.
On the basis of any of the above embodiments of the present invention, an overall architecture of a three-dimensional visualization presentation system and method based on WebGL is shown in fig. 2, which sequentially includes: the data layer, the support layer, the service layer and the presentation layer are as follows:
and (3) a data layer: the system is mainly responsible for acquisition, caching, storage, management and the like of various data resources, and provides a data basis for the system;
a support layer: various data engines, database drivers and the like are mainly provided, and a modular construction mode is adopted to provide support for a service layer;
and (3) a service layer: the system is mainly responsible for data acquisition, processing conversion, management and the like and is a component of background business processing of the system;
a presentation layer: the system is mainly responsible for displaying three-dimensional geographic space data and visual chart data, presenting an interactive interface of a user and performing integrated visual display with a large screen.
The main contents are as follows:
the data layer is mainly responsible for the operations of data acquisition, caching and the like, comprises structured data, unstructured data, a relational database, a distributed database and the like, and is responsible for the acquisition, caching, storage, management and the like of various original data resources in the system.
And the support layer is mainly used for providing related functions and environment support for the service layer, belongs to the application layer, and intelligently selects different data drivers and data engines according to different data types, wherein the different data drivers and data engines comprise a 3DGIS engine, a visualization engine, a spatial data engine and a database driver. The combination of the 3DGIS engine and the spatial data engine solves a series of problems of storage, expression, viewing, management, calculation, analysis and the like of geospatial data, and the database driver is responsible for data connection between the database and a visualization system.
The service layer is mainly used for providing data for displaying charts, two-dimensional and three-dimensional map data, chart management, map management and the like for the presentation layer, and comprises comprehensive situation display management service, visual chart management service, 2D/3D map service, data conversion service, data processing service and data management service.
The presentation layer mainly plays a role in presenting an interactive interface, a chart effect and a map effect of the system, and also comprises a presentation mode and a presentation method of the system interface and the effect, and mainly comprises a large-screen display terminal, a visual chart display interface, a user interactive interface and effect and three-dimensional visual base map display.
An example is as follows:
fig. 3 illustrates a physical structure diagram of a server, and as shown in fig. 3, the server may include: a processor (processor)310, a communication Interface (communication Interface)320, a memory (memory)330 and a communication bus 340, wherein the processor 310, the communication Interface 320 and the memory 330 communicate with each other via the communication bus 340. The processor 310 may call logic instructions in the memory 330 to perform the following method: preprocessing, sorting and classifying the acquired original data, and extracting target data for storage after sorting and classifying the data; the target data at least comprises geospatial data, charts and various numerical parameter information after statistical analysis; acquiring geospatial data, and generating a 3DGIS map based on the geospatial data; the method comprises the steps of obtaining a 3DGIS map, graphs and various statistically analyzed numerical parameter information, fusing the graphs and the various statistically analyzed numerical parameter information by taking the 3DGIS map as a base map, superposing the graphs and the various statistically analyzed numerical parameter information on the base map, and performing visual display in a three-dimensional form.
In addition, the logic instructions in the memory 330 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
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 three-dimensional visualization display system based on WebGL is characterized by comprising a data processing and tool module, a 3DGIS engine module and a visualization engine module;
the data processing and tool module is used for preprocessing, sorting and classifying the acquired original data, and extracting target data for storage after sorting and classifying the data; the target data at least comprises geospatial data, charts and various numerical parameter information after statistical analysis;
the 3DGIS engine module is used for acquiring geographic spatial data and generating a 3DGIS map based on the geographic spatial data;
the visualization engine module is used for acquiring the 3DGIS map, the charts and various statistically analyzed numerical parameter information, fusing the charts and various statistically analyzed numerical parameter information by taking the 3DGIS map as a base map, superposing the charts and various statistically analyzed numerical parameter information on the base map, and performing visualization display in a three-dimensional form.
2. The three-dimensional visualization presentation system of claim 1, further comprising a system UI and a management module, wherein the system UI and the management module are configured to provide a visualization UI interaction interface for a user to implement management of the visualization interface, data management, and user right management.
3. The three-dimensional visualization presentation system of claim 2, further comprising a screen display module for presenting a visualization interface.
4. The three-dimensional visualization presentation system of claim 1, wherein said data processing and tool module further comprises: a data processing unit and a conversion tool unit;
the data processing unit is used for processing the acquired original data into a standard data type according to requirements so as to read and convert a visual chart;
the conversion tool unit is used for converting the interactive query operation input by the user into a standard query statement of a background database so as to allow the three-dimensional visual display system to perform data query operation; furthermore, the conversion tool unit is also integrated with at least one type of service data conversion program for data intercommunication between other system platforms and the three-dimensional visual display system.
5. The three-dimensional visualization presentation system of claim 1, wherein the 3DGIS engine module further comprises: the system comprises a three-dimensional space browsing unit, a space data management unit and a space analysis algorithm unit;
the three-dimensional space browsing unit is used for realizing real-time browsing, amplifying, reducing, rotating and dragging operations of a three-dimensional space scene at any angle;
the spatial data management unit is used for realizing the multi-dimensional data hierarchical management, various three-dimensional browsing modes, and the visualization functions of a road network and a building based on a real-scene three-dimensional model and a virtual three-dimensional model, and supporting the integration and display of two three dimensions;
the space analysis algorithm is used for realizing the functions of measurement, positioning query, visual field analysis and full-view analysis based on the three-dimensional scene.
6. The three-dimensional visualization presentation system according to claim 1, wherein the visualization engine module comprises a resource visualization control unit, a chart visualization display unit and a data analysis algorithm unit;
the resource visualization control unit is used for realizing layering management on spatial data comprising a three-dimensional model, a two-dimensional vector and a POI (point of interest), and controlling the visualization display of the spatial data in a three-dimensional spatial scene;
the chart visualization display unit comprises a data chart display function and is used for visually displaying background data in a two-dimensional and three-dimensional chart mode based on a system data analysis algorithm, and simultaneously supports an open source visualization chart library, and provides a conventional broken line chart, a bar chart, a pie chart and a K line chart, as well as a map and a line chart for geographical data visualization;
the data analysis algorithm unit is used for providing algorithm logic and a program for professional calculation analysis of business data, and simultaneously providing a visual data analysis function based on a three-dimensional GIS map, and can be used for connecting Internet map products such as Google and Baidu and further improving the visual accuracy of the system by combining uploaded longitude and latitude information, tracks, labels and chart effects.
7. The three-dimensional visualization presentation system according to claim 2, wherein the system UI and management module comprises a graphical human-computer interaction processing unit, a visualization page management and control unit, and a right management unit;
the graphical man-machine interaction processing unit comprises a function menu and a visual chart folding and unfolding function, realizes the display of a system operation interface in a graphical mode, feeds back the operation result of a user, and presents the fed-back result to the user in a graphical mode;
the visual page control unit comprises a page control function and is used for realizing overall folding and unfolding display, 2D/3D scene switching, visual angle initialization, page style switching and multi-scene page switching of a visual chart;
the authority management unit provides a system login interface and login verification, and realizes the functions of user login control, user account management, user login authority management and log information inquiry.
8. A method of data visualization, comprising the steps of:
preprocessing, sorting and classifying the acquired original data, and extracting target data for storage after sorting and classifying the data; the target data at least comprises geospatial data, charts and various numerical parameter information after statistical analysis;
acquiring geospatial data, and generating a 3DGIS map based on the geospatial data;
the method comprises the steps of obtaining a 3DGIS map, graphs and various statistically analyzed numerical parameter information, fusing the graphs and the various statistically analyzed numerical parameter information by taking the 3DGIS map as a base map, superposing the graphs and the various statistically analyzed numerical parameter information on the base map, and performing visual display in a three-dimensional form.
9. A server comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of the data visualization method as recited in claim 8.
10. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the data visualization method according to claim 8.
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