CN111710041A - System based on multi-source heterogeneous data fusion display technology and environment simulation method - Google Patents
System based on multi-source heterogeneous data fusion display technology and environment simulation method Download PDFInfo
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Abstract
The invention discloses a system based on a multi-source heterogeneous data fusion display technology and an environment simulation method, wherein the system comprises a vector data fusion display module, an image data fusion display module, a three-dimensional model data fusion display module, a field detection related data fusion display module and a POI (point of interest) module; the environmental simulation method of the system completes the simulation of the disaster area site environment through a plurality of steps; the invention focuses on simulating and reconstructing the disaster area site by using multi-source heterogeneous data, centralizes data with different sources, different data formats and different storage modes into one scene, displays the data in a unified manner, and applies a three-dimensional and animation rendering display mode to strive for real reduction of the site situation, so that fusion and display of the multi-source heterogeneous data are realized, the complexity of the multi-source heterogeneous data utilization is reduced, a decision maker faces no dispersed and abstract data tables, and the decision maker can more intuitively understand and judge the site situation in a highly simulated scene.
Description
Technical Field
The invention relates to a system and a method, in particular to a system and an environment simulation method based on a multi-source heterogeneous data fusion display technology.
Background
The requirements of the modern society on the aspects of data diversity, real-time performance, accuracy and the like are higher and higher, the data from a single source cannot meet the requirements of most business scenes, and therefore the data fusion technology is required to be used for fusing and utilizing multi-source heterogeneous data, so that the data can reflect the real value of the data.
The data fusion display technology comprises the steps of acquiring, transmitting, fusing and displaying data given by various information sources so as to assist people in situation/environment judgment, planning, verification, diagnosis and the like. In the aspect of emergency rescue, the data fusion display technology is extremely important for timely and accurately acquiring various necessary information for a disaster relief site, timely evaluating the site conditions and threats, and implementing auxiliary decision-making and command and control on rescuers. The disaster relief site environment is complex, and factors influencing decision making are more and more complex, so that commanders are required to make the most accurate judgment on site situation in the shortest time, and the most effective command and control are implemented on rescue personnel. The most advanced data processing and displaying technology is required to be used for basic guarantee for realizing the series of 'most', otherwise, a high-level decision maker is submerged by data which is too expensive as the sea, or the judgment is wrong, or the decision is delayed to lose the good rescue opportunity, so that disastrous results are caused.
The multi-source heterogeneous data fusion display technology can be applied to decision-making commands of disaster relief sites. For example, after an earthquake disaster occurs, in order to realize rapid discovery and scientific rescue of a life body, auxiliary support of multi-source heterogeneous data is needed, and remote sensing data, field environment data, dangerous facility distribution data, vital sign data, life detection equipment operation state data, historical data and the like jointly form a multi-source heterogeneous data set in an emergency rescue scene. The data fusion technology fuses information from a plurality of sensors, and may also fuse information from a plurality of sensors and observation facts of a human-machine interface.
The systems and methods described in the prior patents relating to multi-source heterogeneous data fusion techniques have several disadvantages. The working process of the patent with publication number CN109308311A, a multi-source heterogeneous data fusion system, is to utilize the obtained multi-source heterogeneous data to form a short text through normalization processing, match the short text with a matching module, perform data fusion by using a fusion algorithm after matching, and finally evaluate the fusion effect; the method focuses on data fusion and evaluation of fusion effect, and is lack of innovation in data display. The patent 'multisource heterogeneous data fusion system and method' with the publication number of CN108021670A is mainly applied to storage, search and analysis of multisource heterogeneous data in the aviation industry, and mainly comprises an SQL system, a NoSQL system, a cache system and an OLAP engine, the emphasis is to establish a storage, retrieval and analysis system of multisource heterogeneous data, the application field of the system is relatively professional, the used technology mainly breaks through the technology in the aspect of a database engine, and the system is not innovated in the aspect of displaying the multisource heterogeneous data.
The method idea of patent CN104899301B, a processing method of multi-source heterogeneous data, is to screen out data by using SQL data according to the requirement, then push the data to the client, perform data fusion on the client, and display the fused data on the device.
In summary, an effective method for simulating the disaster area site environment by using multi-source heterogeneous data is lacked in the prior art.
Disclosure of Invention
In order to overcome the defects of the technology, the invention provides a system and an environment simulation method based on a multi-source heterogeneous data fusion display technology.
In order to solve the technical problems, the invention adopts the technical scheme that: a system based on multi-source heterogeneous data fusion display technology comprises a vector data fusion display module, a data fusion module and a data fusion module, wherein the vector data fusion display module is used for publishing field area vector data as vector services, loading vector pattern spots of a field area to be checked to the surface of a three-dimensional digital earth by selecting corresponding service names, and automatically positioning the vector pattern spots to the position of a disaster area field;
the image data fusion display module is used for publishing a plurality of image data related to the site as image services, displaying the image services belonging to the site area in the module by performing superposition analysis on the coordinate range of the loaded vector data and the image data range of the published services, then selecting a high-resolution image to be loaded, superposing the high-resolution image to the surface of the three-dimensional digital earth and automatically positioning the high-resolution image;
the three-dimensional model data fusion display module is divided into a regional scene data fusion display module and an oblique photography data fusion display module, regional scene data in a gltf format or oblique photography data in a 3Dtiles format are adopted for three-dimensional modeling data of a field region, the data are uploaded to a fixed directory on a server and are registered in a three-dimensional model data list, the three-dimensional model data of the field region are displayed in the module through superposition analysis of three-dimensional model data and regional vector data coordinates, then the three-dimensional model data needing to be loaded are selected, the field three-dimensional model data can be loaded on a three-dimensional digital earth, the field condition is subjected to three-dimensional simulation display, and the field condition is displayed through a three-dimensional perspective;
the scene detection related data fusion display module is used for displaying the scene detection related data on the three-dimensional digital earth by the corresponding icons thereof through the coordinate information in the scene detection related data and binding and displaying the attribute information of the scene detection related data;
and the POI module takes POI marking points on the three-dimensional digital earth as carriers, binds video links, pictures, meteorological information and other on-site attribute information of the same place on the POI points, and realizes the association, fusion and display of video files, picture files, meteorological information and other attribute information through the POI points.
Further, the field detection related data fusion display module comprises a life body data fusion display module, a vehicle data fusion display module and a detector data fusion display module;
the life body data fusion display module is used for displaying the life body data on the three-dimensional digital earth through the corresponding icons of the life body data detected on site and binding and displaying the attribute information of the life body data;
the vehicle data fusion display module is used for displaying the vehicle data on the three-dimensional digital earth by the corresponding icons thereof according to the coordinate information of the vehicle data used for detection on site and binding and displaying the attribute information of the vehicle data;
and the detector data fusion display module is used for displaying the detector data on the three-dimensional digital earth by the corresponding icons through the coordinate information of the field detector data and binding and displaying the attribute information of the detector data.
Further, the POI module comprises a field video fusion display module, a field picture fusion display module and a field meteorological information fusion display module;
the scene video fusion display module is used for playing video data shot by field personnel and carrying out video display on the real scene;
the scene picture fusion display module is used for checking scene picture data and displaying real scene pictures;
and the on-site meteorological information fusion display module is used for displaying the on-site meteorological environment in an icon or animation rendering mode and helping to accurately restore the on-site environment by combining other on-site environmental data.
A disaster area field environment simulation method of a system based on a multi-source heterogeneous data fusion display technology comprises the following steps:
starting a system, and initializing a carrier three-dimensional digital earth of multi-source heterogeneous data;
in a vector data fusion display module, vector data are issued as services through a geoserver engine, service addresses and service names are stored in a database, when vector data services corresponding to disaster areas are selected, the service addresses are called from the database, the corresponding vector data services are called through the service addresses, the vector data corresponding to the areas are loaded on a three-dimensional digital earth, and the areas are automatically positioned;
in the image data fusion display module, image data are issued as services through a geoserver engine, a service address is stored in a database, the coordinate range of loaded vector data and the coordinate range of the image data of the issued services are used for spatial superposition analysis, if the services are covered, the image service is judged to belong to the field area, the image service belonging to the field area is displayed in the image module, when the image data service displayed in the module is selected, the service address is called from the database, the corresponding image data service is called through the service address, and a high-resolution image layer is superposed on the area;
acquiring the positions and attribute information of the live body, the detection vehicle and the detector which are transmitted back on site in real time through a websocket technology in a field detection related data fusion display module, acquiring longitude and latitude and elevation coordinates through analyzing the transmitted back data, drawing the corresponding positions of the live body, the detection vehicle and the detector on a three-dimensional digital earth by using specific symbols, and checking the attribute information; the attribute information comprises life body state information, rescue state information, moving path information and detection range information; the moving path information can be used for drawing a moving line on the surface of the three-dimensional digital earth according to time intervals; the detection range information can be displayed visually through a three-dimensional conical model; the life body state information can render the strength of the life signal in different colors in a grading way, and the life body to be urgently rescued is marked by using a flashing icon;
in the three-dimensional model data fusion display module, loading topographic data of the three-dimensional digital earth before loading the three-dimensional model data, and then loading the on-site three-dimensional model data to realize three-dimensional construction;
in the POI module, POI points are attached to a three-dimensional digital earth, the POI points are in the range of a disaster area, the POI points are used as a core carrier, field information is hung, the field information comprises field videos, field pictures, field meteorological information and field other information, the POI points integrate various field information data with different formats and different storage forms, a display mode which accords with the characteristics of each information is provided for each information, the field meteorological information is displayed in a rendering mode of completely covering and integrating field scenes, the field other information is displayed in an icon mode, the field videos are played in a video playing window mode, and the field pictures are displayed in a picture carousel display mode;
the system realizes the fusion display of the multi-source heterogeneous data on site and simulates the site environment of the disaster area by a method of intensively displaying the data in various formats and various storage modes in the same scene in a proper mode according to the characteristics of the data.
Further, in the fifth step: the three-dimensional model data has three-dimensional model data of two data types, namely regional scene data and oblique photography data, which can be used, the two data formats are different, the storage mode is that an original file is stored in a server, and file information is registered in a database;
when the three-dimensional model data is regional scene data, the system performs spatial superposition analysis through the coordinate range of the regional scene data and the coordinate range of the regional vector data, if intersection exists, the regional scene is judged to belong to the scene, the regional scene data belonging to the scene region is displayed in a regional scene list in the module, and the selected regional scene in the list is loaded to the three-dimensional digital earth in a mode of calling an original file to load through information in a database;
when the three-dimensional model data is oblique photography data, the system performs spatial superposition analysis through the central coordinate of the oblique photography data and the coordinate range of the area vector data, if the central point is in the coordinate range of the field area vector data, the oblique photography data is judged to belong to the field area, the oblique photography data belonging to the field area is displayed in an oblique photography list in the module, and the selected oblique photography data is loaded to the three-dimensional digital earth in a mode of calling an original file to load through information in the database.
The invention focuses on simulating and reconstructing the disaster area site by using multi-source heterogeneous data, centralizes data with different sources, different data formats and different storage modes into one scene, displays the data in a unified manner, and applies a three-dimensional and animation rendering display mode to strive for real reduction of the site situation, so that fusion and display of the multi-source heterogeneous data are realized, the complexity of the multi-source heterogeneous data utilization is reduced, a decision maker faces no dispersed and abstract data tables, and the decision maker can more intuitively understand and judge the site situation in a highly simulated scene.
Drawings
FIG. 1 is a block diagram of the system components of the present invention.
Fig. 2 is a schematic view of the working process of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a system based on a multi-source heterogeneous data fusion display technology includes a vector data fusion display module, which is used for publishing field area vector data as a vector service, loading a vector pattern spot of a field area to be checked to the surface of a three-dimensional digital earth by selecting a corresponding service name, and automatically positioning the vector pattern spot to a location of a disaster area field;
the image data fusion display module is used for publishing a plurality of image data related to the site as image services, displaying the image services belonging to the site area in the module by performing superposition analysis on the coordinate range of the loaded vector data and the image data range of the published services, then selecting a high-resolution image to be loaded, superposing the high-resolution image to the surface of the three-dimensional digital earth and automatically positioning the high-resolution image;
the three-dimensional model data fusion display module is divided into a regional scene data fusion display module and an oblique photography data fusion display module, regional scene data in a gltf format or oblique photography data in a 3Dtiles format are adopted for three-dimensional modeling data of a field region, the data are uploaded to a fixed directory on a server and are registered in a three-dimensional model data list, the three-dimensional model data of the field region are displayed in the module through superposition analysis of three-dimensional model data and regional vector data coordinates, then the three-dimensional model data needing to be loaded are selected, the field three-dimensional model data can be loaded on a three-dimensional digital earth, the field condition is subjected to three-dimensional simulation display, and the field condition is displayed through a three-dimensional perspective;
the scene detection related data fusion display module is used for displaying the scene detection related data on the three-dimensional digital earth by the corresponding icons thereof through the coordinate information in the scene detection related data and binding and displaying the attribute information of the scene detection related data; the field detection related data fusion display module comprises a life body data fusion display module, a vehicle data fusion display module and a detector data fusion display module; the life body data fusion display module is used for displaying the life body data on the three-dimensional digital earth through the corresponding icons of the life body data detected on site and binding and displaying the attribute information of the life body data; the vehicle data fusion display module is used for displaying the vehicle data on the three-dimensional digital earth by the corresponding icons thereof according to the coordinate information of the vehicle data used for detection on site and binding and displaying the attribute information of the vehicle data; and the detector data fusion display module is used for displaying the detector data on the three-dimensional digital earth by the corresponding icons through the coordinate information of the field detector data and binding and displaying the attribute information of the detector data.
And the POI module takes POI marking points on the three-dimensional digital earth as carriers, binds video links, pictures, meteorological information and other on-site attribute information of the same place on the POI points, and realizes the association, fusion and display of video files, picture files, meteorological information and other attribute information through the POI points. The POI module comprises a field video fusion display module, a field picture fusion display module and a field meteorological information fusion display module; the scene video fusion display module is used for playing video data shot by field personnel and carrying out video display on the real scene; the scene picture fusion display module is used for checking scene picture data and displaying real scene pictures; and the on-site meteorological information fusion display module is used for displaying the on-site meteorological environment in an icon or animation rendering mode and helping to accurately restore the on-site environment by combining other on-site environmental data.
As shown in fig. 2, a disaster area site environment simulation method of a system based on a multi-source heterogeneous data fusion display technology includes the following steps:
starting a system, and initializing a carrier three-dimensional digital earth of multi-source heterogeneous data;
in a vector data fusion display module, vector data are issued as services through a geoserver engine, service addresses and service names are stored in a database, when vector data services corresponding to disaster areas are selected, the service addresses are called from the database, the corresponding vector data services are called through the service addresses, the vector data corresponding to the areas are loaded on a three-dimensional digital earth, and the areas are automatically positioned;
in the image data fusion display module, image data are issued as services through a geoserver engine, a service address is stored in a database, the coordinate range of loaded vector data and the coordinate range of the image data of the issued services are used for spatial superposition analysis, if the services are covered, the image service is judged to belong to the field area, the image service belonging to the field area is displayed in the image module, when the image data service displayed in the module is selected, the service address is called from the database, the corresponding image data service is called through the service address, and a high-resolution image layer is superposed on the area;
acquiring the positions and attribute information of the live body, the detection vehicle and the detector which are transmitted back on site in real time through a websocket technology in a field detection related data fusion display module, acquiring longitude and latitude and elevation coordinates through analyzing the transmitted back data, drawing the corresponding positions of the live body, the detection vehicle and the detector on a three-dimensional digital earth by using specific symbols, and checking the attribute information; the attribute information comprises life body state information, rescue state information, moving path information and detection range information; the moving path information can be used for drawing a moving line on the surface of the three-dimensional digital earth according to time intervals; the detection range information can be displayed visually through a three-dimensional conical model; the life body state information can render the strength of the life signal in different colors in a grading way, and the life body to be urgently rescued is marked by using a flashing icon;
the spatial coordinates and attributes of the life bodies, the detection vehicles and the detectors which are transmitted back each time are stored in a database through a time sequence evolution rendering method, the distribution situation and the rescue state of the life bodies, the detection vehicles and the detectors in the disaster area at any time point in the past are accurately restored according to the time point selected on the time axis, and a dynamic and vivid contrast effect is provided for a decision maker to master the change of the scene situation of the disaster area;
according to the method, by a top-set pushing strategy of a critical life body signal, life body data returned by a detector are rendered in different rendering modes according to different strengths of life body state signals, a critical life body to be rescued is rendered in a striking rendering mode and is placed to the top of a life body list, and the critical life body can be rescued at the fastest speed;
in the three-dimensional model data fusion display module, loading topographic data of the three-dimensional digital earth before loading the three-dimensional model data, and then loading the on-site three-dimensional model data to realize three-dimensional construction;
the three-dimensional model data has three-dimensional model data of two data types, namely regional scene data and oblique photography data, which can be used, the two data formats are different, the storage mode is that an original file is stored in a server, and file information is registered in a database;
when the three-dimensional model data is regional scene data, the system performs spatial superposition analysis through the coordinate range of the regional scene data and the coordinate range of the regional vector data, if intersection exists, the regional scene is judged to belong to the scene, the regional scene data belonging to the scene region is displayed in a regional scene list in the module, and the selected regional scene in the list is loaded to the three-dimensional digital earth in a mode of calling an original file to load through information in a database;
when the three-dimensional model data is oblique photography data, the system performs spatial superposition analysis through the central coordinate of the oblique photography data and the coordinate range of the area vector data, if the central point is in the coordinate range of the field area vector data, the oblique photography data is judged to belong to the field area, the oblique photography data belonging to the field area is displayed in an oblique photography list in the module, and the selected oblique photography data is loaded to the three-dimensional digital earth in a mode of calling an original file to load through information in a database;
in the POI module, POI points are attached to a three-dimensional digital earth, the POI points are in the range of a disaster area, the POI points are used as a core carrier, field information is hung, the field information comprises field videos, field pictures, field meteorological information and field other information, the POI points integrate various field information data with different formats and different storage forms, a display mode which accords with the characteristics of each information is provided, the field meteorological information such as rain, snow and the like is rendered in a rendering mode which completely covers and is integrated into the field scene, the field other information such as wind direction, wind power, temperature, humidity and the like is displayed in an icon mode, the field videos are played in a video playing window mode, and the field pictures are displayed in a picture carousel display mode;
the system realizes the fusion display of the on-site multi-source heterogeneous data and simulates the on-site environment of the disaster area by a method of intensively displaying the data in various formats and various storage modes in the same scene of the three-dimensional digital earth in a proper mode according to the characteristics of the data.
The system can automatically position to a disaster area site on a three-dimensional digital earth, simultaneously display multi-source heterogeneous data such as a high-resolution image, a site vector pattern, a site three-dimensional model, a site video, a site picture, site meteorological information, site detection related data and the like on the site, fuse the multi-source heterogeneous data with different formats into one scene, and jointly build a simulation environment of the site environment, so that a decision maker can make an accurate judgment on the site situation personally under the fusion display of multi-directional comprehensive information, and further scientifically and accurately guide corresponding emergency rescue work, thereby achieving the effect of doubling the result with half the effort. The invention focuses on researching the multi-source heterogeneous data fusion display function and the sensory experience of a user, realizes imaging, symbolization and three-dimensional transformation of abstract data, strives to express complex and abstract multi-source heterogeneous data in the most intuitive mode, can realize real-time updating of detection data, greatly enhances the timeliness of the data, and strives for precious time for decision makers and rescue workers.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (5)
1. A system based on multisource heterogeneous data fusion display technology is characterized in that: the system comprises a vector data fusion display module, a three-dimensional digital earth surface and a disaster area, wherein the vector data fusion display module is used for publishing field area vector data as vector services, loading vector graphic spots of a field area to be checked to the surface of the three-dimensional digital earth by selecting corresponding service names and automatically positioning the vector graphic spots to the position of a disaster area field;
the image data fusion display module is used for publishing a plurality of image data related to the site as image services, displaying the image services belonging to the site area in the module by performing superposition analysis on the coordinate range of the loaded vector data and the image data range of the published services, then selecting a high-resolution image to be loaded, superposing the high-resolution image to the surface of the three-dimensional digital earth and automatically positioning the high-resolution image;
the three-dimensional model data fusion display module is divided into a regional scene data fusion display module and an oblique photography data fusion display module, regional scene data in a gltf format or oblique photography data in a 3Dtiles format are adopted for three-dimensional modeling data of a field region, the data are uploaded to a fixed directory on a server and are registered in a three-dimensional model data list, the three-dimensional model data of the field region are displayed in the module through superposition analysis of three-dimensional model data and regional vector data coordinates, then the three-dimensional model data needing to be loaded are selected, the field three-dimensional model data can be loaded on a three-dimensional digital earth, the field condition is subjected to three-dimensional simulation display, and the field condition is displayed through a three-dimensional perspective;
the scene detection related data fusion display module is used for displaying the scene detection related data on the three-dimensional digital earth by the corresponding icons thereof through the coordinate information in the scene detection related data and binding and displaying the attribute information of the scene detection related data;
and the POI module takes POI marking points on the three-dimensional digital earth as carriers, binds video links, pictures, meteorological information and other on-site attribute information of the same place on the POI points, and realizes the association, fusion and display of video files, picture files, meteorological information and other attribute information through the POI points.
2. The multi-source heterogeneous data fusion presentation technology-based system according to claim 1, wherein: the field detection related data fusion display module comprises a life body data fusion display module, a vehicle data fusion display module and a detector data fusion display module;
the life body data fusion display module is used for displaying the life body data on the three-dimensional digital earth through the corresponding icons of the life body data detected on site and binding and displaying the attribute information of the life body data;
the vehicle data fusion display module is used for displaying the vehicle data on the three-dimensional digital earth by the corresponding icons thereof according to the coordinate information of the vehicle data used for detection on site and binding and displaying the attribute information of the vehicle data;
and the detector data fusion display module is used for displaying the detector data on the three-dimensional digital earth by the corresponding icons through the coordinate information of the field detector data and binding and displaying the attribute information of the detector data.
3. The multi-source heterogeneous data fusion presentation technology-based system according to claim 2, wherein: the POI module comprises a field video fusion display module, a field picture fusion display module and a field meteorological information fusion display module;
the scene video fusion display module is used for playing video data shot by field personnel and carrying out video display on the real scene;
the scene picture fusion display module is used for checking scene picture data and displaying real scene pictures;
and the on-site meteorological information fusion display module is used for displaying the on-site meteorological environment in an icon or animation rendering mode and helping to accurately restore the on-site environment by combining other on-site environmental data.
4. A disaster area field environment simulation method of a system based on a multi-source heterogeneous data fusion display technology is characterized by comprising the following steps: the method comprises the following steps:
starting a system, and initializing a carrier three-dimensional digital earth of multi-source heterogeneous data;
in a vector data fusion display module, vector data are issued as services through a geoserver engine, service addresses and service names are stored in a database, when vector data services corresponding to disaster areas are selected, the service addresses are called from the database, the corresponding vector data services are called through the service addresses, the vector data corresponding to the areas are loaded on a three-dimensional digital earth, and the areas are automatically positioned;
in the image data fusion display module, image data are issued as services through a geoserver engine, a service address is stored in a database, the coordinate range of loaded vector data and the coordinate range of the image data of the issued services are used for spatial superposition analysis, if the services are covered, the image service is judged to belong to the field area, the image service belonging to the field area is displayed in the image module, when the image data service displayed in the module is selected, the service address is called from the database, the corresponding image data service is called through the service address, and a high-resolution image layer is superposed on the area;
acquiring the positions and attribute information of the live body, the detection vehicle and the detector which are transmitted back on site in real time through a websocket technology in a field detection related data fusion display module, acquiring longitude and latitude and elevation coordinates through analyzing the transmitted back data, drawing the corresponding positions of the live body, the detection vehicle and the detector on a three-dimensional digital earth by using specific symbols, and checking the attribute information; the attribute information comprises life body state information, rescue state information, moving path information and detection range information; the moving path information can be used for drawing a moving line on the surface of the three-dimensional digital earth according to time intervals; the detection range information can be displayed visually through a three-dimensional conical model; the life body state information can render the strength of the life signal in different colors in a grading way, and the life body to be urgently rescued is marked by using a flashing icon;
in the three-dimensional model data fusion display module, loading topographic data of the three-dimensional digital earth before loading the three-dimensional model data, and then loading the on-site three-dimensional model data to realize three-dimensional construction;
in the POI module, POI points are attached to a three-dimensional digital earth, the POI points are in the range of a disaster area, the POI points are used as a core carrier, field information is hung, the field information comprises field videos, field pictures, field meteorological information and field other information, the POI points integrate various field information data with different formats and different storage forms, a display mode which accords with the characteristics of each information is provided for each information, the field meteorological information is displayed in a rendering mode of completely covering and integrating field scenes, the field other information is displayed in an icon mode, the field videos are played in a video playing window mode, and the field pictures are displayed in a picture carousel display mode;
the system realizes the fusion display of the multi-source heterogeneous data on site and simulates the site environment of the disaster area by a method of intensively displaying the data in various formats and various storage modes in the same scene in a proper mode according to the characteristics of the data.
5. The disaster area site environment simulation method of the multi-source heterogeneous data fusion display technology-based system according to claim 4, characterized in that: in the fifth step: the three-dimensional model data has three-dimensional model data of two data types, namely regional scene data and oblique photography data, which can be used, the two data formats are different, the storage mode is that an original file is stored in a server, and file information is registered in a database;
when the three-dimensional model data is regional scene data, the system performs spatial superposition analysis through the coordinate range of the regional scene data and the coordinate range of the regional vector data, if intersection exists, the regional scene is judged to belong to the scene, the regional scene data belonging to the scene region is displayed in a regional scene list in the module, and the selected regional scene in the list is loaded to the three-dimensional digital earth in a mode of calling an original file to load through information in a database;
when the three-dimensional model data is oblique photography data, the system performs spatial superposition analysis through the central coordinate of the oblique photography data and the coordinate range of the area vector data, if the central point is in the coordinate range of the field area vector data, the oblique photography data is judged to belong to the field area, the oblique photography data belonging to the field area is displayed in an oblique photography list in the module, and the selected oblique photography data is loaded to the three-dimensional digital earth in a mode of calling an original file to load through information in the database.
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