CN112364118B - System and method for treating urban sewage surrounding environment model - Google Patents
System and method for treating urban sewage surrounding environment model Download PDFInfo
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- CN112364118B CN112364118B CN202011336852.XA CN202011336852A CN112364118B CN 112364118 B CN112364118 B CN 112364118B CN 202011336852 A CN202011336852 A CN 202011336852A CN 112364118 B CN112364118 B CN 112364118B
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Abstract
The invention relates to a system and a method for treating an urban sewage surrounding environment model, belongs to the technical field of model management, and solves the problems of poor intuitiveness, high map service updating frequency and low efficiency of the conventional sewage surrounding environment two-dimensional model. The system comprises: the model establishing module is used for establishing three-dimensional models of the sewage surrounding environment corresponding to different time periods; the basic topographic map publishing module is used for publishing the basic topographic map of the surrounding environment of the target sewage; the conversion module is used for performing tiling processing on the three-dimensional model of the surrounding environment to obtain sub-models with different resolutions and respectively converting the sub-models into first text files; correspondingly tiling the basic topographic map, and respectively converting the basic topographic map into a second text file and a third text file; and the fusion module is used for fusing the text files with the same resolution ratio in the target time period to obtain a visual surrounding environment three-dimensional model corresponding to the target sewage. By the system, the surrounding environment of the sewage can be intuitively known, and frequent map updating service can be avoided.
Description
Technical Field
The invention relates to the technical field of model management, in particular to a system and a method for treating a model of a surrounding environment of urban sewage.
Background
In the prior art, when a city administration unit monitors the problem of the surrounding environment of sewage (black and odorous water body), two-dimensional GIS data and a remote sensing image are usually selected and combined, an objective sewage (black and odorous water body) monitoring database is formed by monitoring a sewage (black and odorous water body) monitoring model based on geographical national condition monitoring data and other special data through a high-resolution remote sensing image, the change of the city water body from no black and odorous water body to severe black and odorous water body can be preliminarily judged, and the method is suitable for being used for general investigation of the black and odorous water body in areas with simple background environment, clear water system distribution and rich remote sensing image resources.
The prior art has at least the following defects that firstly, the traditional mode is based on the release of two-dimensional water body information by Arcgis, and the sewage information can be intuitively understood through basic map superposition, but when the sewage pollution influence factor is researched, the information can be expressed only through characters, pictures and the like, and the peripheral environment of the sewage cannot be intuitively understood; secondly, when monitoring of water layer factors and surrounding environments is used as requirements, the existing two-dimensional model of the surrounding environment of the water body cannot meet the monitoring requirements, and in addition, due to timeliness and sporadic nature of the water body environment, map services need to be frequently updated, so that service resources are wasted, and meanwhile, the efficiency is reduced.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide a system and a method for processing an urban sewage surrounding environment model, so as to solve the problems of poor intuitiveness, high map service updating frequency and low efficiency of the existing sewage surrounding environment two-dimensional model.
In one aspect, the present invention provides a system for processing an urban sewage surrounding environment model, comprising:
the model establishing module is used for establishing three-dimensional models of the peripheral sewage environment corresponding to different time periods based on the image data of the target peripheral sewage environment acquired in different time periods;
the basic topographic map publishing module is used for publishing a basic topographic map of the target sewage surrounding environment, wherein the basic topographic map comprises a two-dimensional topographic map and a three-dimensional topographic map;
the conversion module is used for performing tiling treatment on the surrounding environment three-dimensional model to obtain a plurality of sewage surrounding environment three-dimensional sub-models with different resolutions and respectively converting the surrounding environment three-dimensional sub-models with different resolutions into corresponding first text files; correspondingly and respectively performing tiling treatment on the two-dimensional topographic map and the three-dimensional topographic map according to the resolution of the three-dimensional submodel of the sewage surrounding environment, and respectively converting the two-dimensional topographic map and the three-dimensional topographic map into a second text file and a third text file which correspond to each other;
and the fusion module is used for fusing the corresponding first text file, the second text file and the third text file with the same resolution ratio in the target time period to obtain a visual surrounding environment three-dimensional model corresponding to the target sewage.
Further, the conversion module is further configured to establish a first index file, a second index file, and a third index file corresponding to the first text file, the second text file, and the third text file, and the text files with different resolutions may be called by using the index files.
The system further comprises a spatial database creating module for creating a spatial database to store the first text file, the second text file, the third text file and the corresponding first index file, second index file and third index file in different time periods.
Further, the spatial database creation module is further configured to:
setting names and codes of the created spatial database according to the sewage and the administrative regions to which the sewage belongs;
and setting the time attribute of the spatial database according to the generation time of the three-dimensional model of the sewage surrounding environment.
Further, the three-dimensional model of the sewage surrounding environment is established in a space rectangular coordinate system; the conversion module is specifically configured to:
taking a point with the maximum Z coordinate value in a space triangle contained by each three-dimensional object in the three-dimensional model of the sewage surrounding environment as a vertex of a first space triangle;
determining the spatial position of the vertex of other spatial triangles contained in each three-dimensional object in the three-dimensional model of the sewage surrounding environment by taking the vertex of the first spatial triangle as a spatial reference, and further determining the spatial topological relation between the vertex of each spatial triangle in the three-dimensional model of the sewage surrounding environment and the corresponding spatial triangle;
and setting the vertex sets to be called and the number of the space triangles to be rendered under each resolution, further obtaining three-dimensional sub-model copies of the sewage surrounding environment with different resolutions, and establishing a first index file.
Further, the three-dimensional sub-model copy of the sewage surrounding environment with the same resolution ratio can be divided into a plurality of sub-copies of the three-dimensional sub-model of the sewage surrounding environment.
Further, the conversion module is further configured to:
acquiring attribute information of each three-dimensional object in the three-dimensional sub-model copies of the sewage surrounding environment with different resolutions; the attribute information comprises a vertex sequence, vertex coordinates, included space triangle indexes, normal vectors, texture information and vertex coordinates corresponding to each space triangle, the generation time of the three-dimensional sewage surrounding environment sub-model and the position coordinates of the three-dimensional sewage surrounding environment sub-model;
and storing the vertex sequence and the model generation time into an xml file, storing the vertex coordinates, the included space triangle indexes, the normal vectors, the texture information and the vertex coordinates of each three-dimensional object in the three-dimensional sub-model of the sewage surrounding environment into a data file, and storing the position coordinates of the copy of the three-dimensional sub-model of the sewage surrounding environment into the data file, thereby obtaining first text files corresponding to different resolutions.
Further, the fusion module is further configured to:
creating a three-dimensional model renderer;
calling a first index file, a second index file and a third index file which respectively correspond to the first text file, the second text file and the third text file with target resolution, and adding the first index file, the second index file and the third index file to the renderer;
calling a second text file with a target resolution according to the second index file, determining the resolution of the renderer according to the target resolution, and determining an initial coordinate of the renderer according to the position coordinate of the called second text file;
utilizing the called first index file, the called target resolution, the target position coordinate and a first text file in a target time period; a third text file of the target resolution and the target position coordinates is called by using the called third index file;
and loading the first text file, the second text file and the third text file into the renderer to obtain a visual three-dimensional model of the surrounding environment corresponding to the target sewage, and adjusting the height parameters of the three-dimensional model of the surrounding environment to make the three-dimensional model of the surrounding environment fit with the two-dimensional topographic map and the three-dimensional topographic map.
On the other hand, the invention provides a method for treating an urban sewage surrounding environment model, which comprises the following steps:
establishing three-dimensional models of the surrounding environment of the sewage corresponding to different time periods based on the image data of the surrounding environment of the target sewage collected in different time periods;
publishing a basic topographic map of the target sewage surrounding environment, wherein the basic topographic map comprises a two-dimensional topographic map and a three-dimensional topographic map;
tiling the three-dimensional model of the surrounding environment to obtain a plurality of three-dimensional submodels of the sewage surrounding environment with different resolutions, and respectively converting the three-dimensional submodels of the surrounding environment with different resolutions into corresponding first text files; correspondingly and respectively performing tiling treatment on the two-dimensional topographic map and the three-dimensional topographic map according to the resolution of the three-dimensional submodel of the sewage surrounding environment, and respectively converting the two-dimensional topographic map and the three-dimensional topographic map into a second text file and a third text file which correspond to each other;
and fusing the first text file, the second text file and the third text file with the same resolution ratio corresponding to the target time period to obtain a visual surrounding environment three-dimensional model corresponding to the target sewage.
Further, the method also comprises the steps of establishing a first index file, a second index file and a third index file corresponding to the first text file, the second text file and the third text file, and calling the text files with different resolutions by using the index files.
Compared with the prior art, the invention can realize at least one of the following beneficial effects:
1. the system and the method for processing the urban sewage surrounding environment model perform tiling processing on the sewage surrounding environment three-dimensional models in different time periods to obtain the surrounding environment three-dimensional submodels with different resolutions in different time periods, separately manage the sewage surrounding environment three-dimensional submodels and the basic topographic map, and obtain the visual sewage surrounding environment three-dimensional model by only calling the sewage surrounding environment three-dimensional submodel with the target resolution in the target time period to be fused with the two-dimensional topographic map and the three-dimensional topographic map when the surrounding environment of a black water body needs to be checked and analyzed, so that map service resources are saved and the efficiency is improved; secondly, the problems that the environmental factors around the sewage are inconvenient for fixed-period field investigation and measurement and the like are solved, and the urban sewage influence factors and the improvement progress of the fixed period can be analyzed through sewage periphery modeling and simulation of polluted water environment and evolution process.
2. The system and the method for treating the urban sewage surrounding environment model fuse the three-dimensional sub-model of the urban sewage surrounding environment with the two-dimensional topographic map and the three-dimensional topographic map, get rid of the limitations of the two-dimensional model and the two-dimensional map of the urban sewage surrounding environment for treating urban water pollution, can visually and accurately present geographic information and environmental information, and greatly improve the effective management of the urban water pollution information.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic diagram of a system for treating a model of a municipal sewage environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of creating a visual three-dimensional model of the sewage surrounding environment according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for processing the model of the surrounding environment of municipal sewage according to an embodiment of the invention.
Reference numerals:
110-a model building module; 120-basic topographic map publishing module; 130-a conversion module; 140-spatial database creation module; 150-spatial database; 160-fusion module.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
System embodiment
The invention discloses a treatment system of an urban sewage surrounding environment model. As shown in fig. 1, the system includes:
the model establishing module 110 is configured to establish three-dimensional models of the surrounding environment of sewage corresponding to different time periods based on the image data of the surrounding environment of the target sewage collected in different time periods.
And a basic topographic map publishing module 120, configured to publish a basic topographic map of the target sewage surrounding environment, where the basic topographic map includes a two-dimensional topographic map and a three-dimensional topographic map.
Illustratively, based on an ArcGIS software tool, the acquired multiprotch data (polyhedron element data) is added into Arcgis pro, and the whole scene of the sewage surrounding environment terrain is taken as a basic terrain map.
The conversion module 130 is configured to perform tiling processing on the three-dimensional model of the surrounding environment to obtain a plurality of three-dimensional submodels of the sewage surrounding environment with different resolutions, and respectively convert the three-dimensional submodels of the surrounding environment with different resolutions into corresponding first text files; and correspondingly and respectively performing tiling treatment on the two-dimensional topographic map and the three-dimensional topographic map according to the resolution of the three-dimensional submodel of the sewage surrounding environment, and respectively converting the two-dimensional topographic map and the three-dimensional topographic map into a second text file and a third text file which correspond to each other.
And the fusion module 160 is configured to fuse the first text file, the second text file, and the third text file with the same resolution within the target time period to obtain a three-dimensional model of the visual surrounding environment corresponding to the target sewage.
Specifically, a process of creating a visualized three-dimensional model of the sewage surrounding environment is shown in fig. 2.
Preferably, the model building module 110 builds three-dimensional models of the sewage surrounding environment in different time periods by:
in different time periods, the adaptive sensor size and the adaptive production area are selected based on the oblique photography technology to carry out shooting, and the image data of the target sewage surrounding environment is obtained, wherein the production area is the area to be shot by shooting, and therefore the shooting angle is determined.
And using Smart3D software, and carrying out modeling treatment on the collected sewage surrounding environment data by using a space-three calculation method to obtain corresponding sewage surrounding environment three-dimensional models in different time periods, wherein the three-dimensional models are files in osgb format.
Specifically, the three-dimensional model of the peripheral environment of the sewage in different time periods is established to analyze the evolution process of the three-dimensional model, so that the change trend of the urban sewage can be integrally known, the regulation and prevention can be carried out in time, and a data basis is provided for a later-stage sewage regulation and prevention strategy.
Preferably, the conversion module 130 is further configured to establish a first index file, a second index file, and a third index file corresponding to the first text file, the second text file, and the third text file.
Preferably, a spatial database 150 creating module 140 is further included for creating a spatial database 150 to store the first text file, the second text file, the third text file and the corresponding first index file, the second index file and the third index file in different time periods.
Preferably, the spatial database 150 creates a module 140, further for:
setting names and codes of a created spatial database 150 according to sewage and administrative areas to which the sewage belongs;
and setting the time attribute of the spatial database 150 according to the generation time of the three-dimensional model of the sewage surrounding environment.
Preferably, the three-dimensional model of the sewage surrounding environment is established in a space rectangular coordinate system; the conversion module 130 obtains the three-dimensional submodel copies of the sewage surrounding environment with different resolutions by the following method:
and taking the point with the maximum Z coordinate value in the space triangle contained by each three-dimensional object in the three-dimensional model of the sewage surrounding environment as the vertex of the first space triangle.
And determining the spatial positions of the vertexes of other spatial triangles contained in each three-dimensional object in the three-dimensional model of the sewage surrounding environment by taking the vertex of the first spatial triangle as a spatial reference, and further determining the spatial topological relation between the vertex of each spatial triangle and the corresponding spatial triangle in the three-dimensional model of the sewage surrounding environment, wherein the formed spatial topological relation comprises the vertex with the maximum Z coordinate value of the spatial triangle, the included angle between the corresponding two sides, the side length of the two sides and the position relation between the adjacent spatial triangles.
And setting the vertex sets to be called and the number of the space triangles to be rendered under each resolution, further obtaining three-dimensional sub-model copies of the sewage surrounding environment with different resolutions, and establishing a first index file. Illustratively, if a user needs to know the sewage surrounding environment in a large area, the user only needs to obtain a sewage surrounding environment three-dimensional sub-model with a lower resolution, and a small number of vertexes and space triangles need to be called; if a user needs to know a certain object in the sewage periphery in detail, the three-dimensional sub-model of the sewage periphery environment with higher resolution needs to be obtained, and a large number of vertexes and space triangles need to be called.
Preferably, the sewage surrounding environment three-dimensional sub-model copy with the same resolution ratio can be divided into a plurality of sewage surrounding environment three-dimensional sub-model copies. For example, when the wastewater body is too long, the three-dimensional sub-model copy of the wastewater surrounding environment with the same resolution can be divided into sub-copies for processing and storing.
Preferably, in the index file, different resolution indexes are set to correspond to text files with different resolutions, and in addition, if the three-dimensional sub-model copy of the sewage surrounding environment with the same resolution is divided into a plurality of sub-copies, the index file can call the text file corresponding to one or more of the sub-copies.
Preferably, the conversion module 130 is further configured to:
and acquiring attribute information of each three-dimensional object in the three-dimensional sub-model copies of the sewage surrounding environment with different resolutions based on the intersection point coordinates, the spatial topological relation and the image gray value. The intersection point coordinates are intersection points of two space triangles sharing one side, in addition, an image can be obtained according to the shot data, the image is processed to further obtain an image gray value, and the texture information of the space triangles can be determined according to the image gray value.
Specifically, the attribute information includes a vertex sequence (i.e., an ID of the three-dimensional object), a vertex coordinate (i.e., a coordinate of a vertex with a largest z-coordinate value), a spatial triangle index (i.e., a plurality of fragments of the modeling generation object), a normal vector (i.e., an inclination angle of each spatial triangle) corresponding to each spatial triangle, texture information (i.e., a pattern of each spatial triangle), a vertex coordinate (i.e., a coordinate of a vertex with a largest z-coordinate value), a generation time of the three-dimensional sewage surrounding environment sub-model, and a position coordinate of the three-dimensional sewage surrounding environment sub-model copy.
Storing the vertex sequence and the model generation time into an xml file, storing the vertex coordinates, the included space triangle indexes, the normal vectors, the texture information and the vertex coordinates of each three-dimensional object in the three-dimensional sub-model of the sewage surrounding environment into a data file, and storing the position coordinates of the copy of the three-dimensional sub-model of the sewage surrounding environment into the data file, thereby obtaining first text files corresponding to different resolutions, wherein the first text files are files in an xml + data format. And the Export Manager tool is used to import the first text file into the spatial database 150 for storage with the administrative district as an index.
And performing tiling processing on the two-dimensional topographic map and the three-dimensional topographic map in the same way to obtain a second text file and a third text file which correspond to the first text file in the same resolution.
Preferably, the merging module 160 merges the first text file, the second text file and the third text file by:
creating a three-dimensional model renderer; specifically, a Cesium renderer is created through a Viewer function, parameters are configured, and functional areas such as a time axis and an instrument panel are added to the Cesium renderer.
Calling a first index file, a second index file and a third index file which respectively correspond to a first text file, a second text file and a third text file of a target resolution ratio, and adding the first index file, the second index file and the third index file to a renderer; specifically, a ceium 3DTileset instance is created, a first index file is called from the spatial database 150 by an instance url attribute and added to the ceium renderer by the zoomTo method, and an arcgis mapserver imageprovider instance is created, a second index file and a third index file are called from the spatial database 150 by an instance url attribute and added to the ceium renderer by the addigmageylprovider method.
Calling a second text file with a target resolution according to the second index file, determining the resolution of the renderer according to the target resolution, and determining the initial coordinate of the renderer according to the position coordinate of the called second text file; specifically, a cesum.
Utilizing the called first index file, the called target resolution, the target position coordinate and the first text file in the target time period; and a third text file of the target resolution and the target position coordinates is called by using the called third index file. And selecting the target position coordinates based on the condition that the finally obtained two-dimensional topographic map, the three-dimensional topographic map and the three-dimensional model of the sewage surrounding environment are not coincident.
After the first text file, the second text file and the third text file are loaded into the renderer, a visual three-dimensional model of the surrounding environment corresponding to the target sewage can be obtained, and the height parameter (namely elevation) of the three-dimensional model of the surrounding environment is adjusted, so that the three-dimensional model of the surrounding environment is matched with the two-dimensional topographic map and the three-dimensional topographic map. Preferably, the adjustment range of the height parameter of the three-dimensional model of the surrounding environment is from the highest point to the highest point of the terrain elevation plus 100 m.
Preferably, the method further comprises web-side tool packaging, specifically, the web-side operation steps are packaged into configurable functions, and management of the use permission of the three-dimensional model of the sewage surrounding environment is enhanced through restriction on administrative divisions and time sequences, so that different researchers can view the three-dimensional model of the sewage surrounding environment in corresponding areas.
Method embodiment
The invention further discloses a method for processing the urban sewage surrounding environment model.
Since the principle of the embodiment of the method is the same as that of the embodiment of the system, the system embodiment can be referred to for the repeated points, and the detailed description is omitted here.
As shown in fig. 3, the method comprises the steps of:
and establishing three-dimensional models of the sewage surrounding environment corresponding to different time periods based on the image data of the target sewage surrounding environment acquired in different time periods.
And issuing a basic topographic map of the target sewage surrounding environment, wherein the basic topographic map comprises a two-dimensional topographic map and a three-dimensional topographic map.
Tiling the three-dimensional model of the surrounding environment to obtain a plurality of three-dimensional submodels of the sewage surrounding environment with different resolutions, and respectively converting the three-dimensional submodels of the surrounding environment with different resolutions into corresponding first text files; correspondingly and respectively performing tiling treatment on the two-dimensional topographic map and the three-dimensional topographic map according to the resolution of the three-dimensional submodel of the sewage surrounding environment, and respectively converting the two-dimensional topographic map and the three-dimensional topographic map into a second text file and a third text file which correspond to each other;
and fusing the first text file, the second text file and the third text file with the same resolution ratio corresponding to the target time period to obtain a visual surrounding environment three-dimensional model corresponding to the target sewage.
Preferably, the method further comprises establishing corresponding first index file, second index file and third index file for the first text file, the second text file and the third text file, and the text files with different resolutions can be called by using the index files.
Compared with the prior art, the system and the method for treating the urban sewage surrounding environment model have the advantages that on one hand, tiling treatment is carried out on the sewage surrounding environment three-dimensional models in different time periods, the surrounding environment three-dimensional sub-models in different time periods and different resolutions are obtained, the sewage surrounding environment three-dimensional sub-models and the basic topographic map are separately managed, when the surrounding environment of a black water body needs to be checked and analyzed, only the sewage surrounding environment three-dimensional sub-model with the target resolution in the target time period needs to be called to be fused with the two-dimensional topographic map and the three-dimensional topographic map, so that the visual sewage surrounding environment three-dimensional model is obtained, the three-dimensional topographic map and the two-dimensional topographic map do not need to be updated frequently, map service resources are saved, and the efficiency is improved; secondly, the problems that the environmental factors around the sewage are inconvenient for fixed-period on-site investigation and measurement and the like are solved, and the influence factors and the improvement progress of the urban sewage in the fixed period can be analyzed through modeling around the sewage, simulating the polluted water environment and the evolution process; on the other hand, the system and the method for treating the urban sewage surrounding environment model fuse the three-dimensional sub-model of the urban sewage surrounding environment with the two-dimensional topographic map and the three-dimensional topographic map, get rid of the limitations of the two-dimensional model and the two-dimensional map of the urban water pollution treatment, can visually and accurately present the geographic information and the environmental information, and greatly improve the effective management of the urban water pollution information.
Those skilled in the art will appreciate that all or part of the flow of the method implementing the above embodiments may be implemented by a computer program, which is stored in a computer readable storage medium, to instruct related hardware. The computer readable storage medium is a magnetic disk, an optical disk, a read-only memory or a random access memory.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (7)
1. A system for processing a model of the surrounding environment of urban sewage, comprising:
the model establishing module is used for establishing three-dimensional models of the peripheral sewage environment corresponding to different time periods based on the image data of the target peripheral sewage environment acquired in different time periods;
the basic topographic map publishing module is used for publishing a basic topographic map of the target sewage surrounding environment, wherein the basic topographic map comprises a two-dimensional topographic map and a three-dimensional topographic map;
the conversion module is used for performing tiling treatment on the surrounding environment three-dimensional model to obtain a plurality of sewage surrounding environment three-dimensional sub-models with different resolutions and respectively converting the surrounding environment three-dimensional sub-models with different resolutions into corresponding first text files; correspondingly and respectively performing tiling treatment on the two-dimensional topographic map and the three-dimensional topographic map according to the resolution of the three-dimensional submodel of the sewage surrounding environment, respectively converting the two-dimensional topographic map and the three-dimensional topographic map into a second text file and a third text file which correspond to each other, establishing a first index file, a second index file and a third index file which correspond to the first text file, the second text file and the third text file, and calling the text files with different resolutions by using the index files;
the three-dimensional model of the sewage surrounding environment is established in a space rectangular coordinate system; the conversion module is specifically configured to:
taking a point with the maximum Z coordinate value in a space triangle contained by each three-dimensional object in the three-dimensional model of the sewage surrounding environment as a vertex of a first space triangle;
determining the spatial position of the vertex of other spatial triangles contained in each three-dimensional object in the three-dimensional model of the sewage surrounding environment by taking the vertex of the first spatial triangle as a spatial reference, and further determining the spatial topological relation between the vertex of each spatial triangle in the three-dimensional model of the sewage surrounding environment and the corresponding spatial triangle;
setting a vertex set to be called and the number of space triangles to be rendered under each resolution, further obtaining three-dimensional sub-model copies of the sewage surrounding environment with different resolutions, and establishing a first index file;
and the fusion module is used for fusing the corresponding first text file, the second text file and the third text file with the same resolution ratio in the target time period to obtain a visual surrounding environment three-dimensional model corresponding to the target sewage.
2. The processing system of claim 1, further comprising a spatial database creation module to create a spatial database to store the first text file, the second text file, the third text file, and the corresponding first index file, second index file, and third index file over different time periods.
3. The processing system of claim 2, wherein the spatial database creation module is further configured to:
setting names and codes of the created spatial database according to the sewage and the administrative regions to which the sewage belongs;
and setting the time attribute of the spatial database according to the generation time of the three-dimensional model of the sewage surrounding environment.
4. The treatment system of claim 1, wherein the same resolution copy of the three-dimensional submodel of the polluted water surrounding environment can be divided into a plurality of sub-copies of the three-dimensional submodel of the polluted water surrounding environment.
5. The processing system of claim 4, wherein the conversion module is further configured to:
acquiring attribute information of each three-dimensional object in the three-dimensional sub-model copies of the sewage surrounding environment with different resolutions; the attribute information comprises a vertex sequence, vertex coordinates, included space triangle indexes, normal vectors, texture information and vertex coordinates corresponding to each space triangle, the generation time of the three-dimensional sewage surrounding environment sub-model and the position coordinates of the three-dimensional sewage surrounding environment sub-model;
and storing the vertex sequence and the model generation time into an xml file, storing the vertex coordinates, the included space triangle indexes, the normal vectors, the texture information and the vertex coordinates of each three-dimensional object in the three-dimensional sub-model of the sewage surrounding environment into a data file, and storing the position coordinates of the copy of the three-dimensional sub-model of the sewage surrounding environment into the data file, thereby obtaining first text files corresponding to different resolutions.
6. The processing system of claim 5, wherein the fusion module is further configured to:
creating a three-dimensional model renderer;
calling a first index file, a second index file and a third index file which respectively correspond to the first text file, the second text file and the third text file with target resolution, and adding the first index file, the second index file and the third index file to the renderer;
calling a second text file with a target resolution according to the second index file, determining the resolution of the renderer according to the target resolution, and determining an initial coordinate of the renderer according to the position coordinate of the called second text file;
utilizing the called first index file, the called target resolution, the target position coordinate and a first text file in a target time period; a third text file of the target resolution and the target position coordinates is called by using the called third index file;
and loading the first text file, the second text file and the third text file into the renderer to obtain a visual three-dimensional model of the surrounding environment corresponding to the target sewage, and adjusting the height parameters of the three-dimensional model of the surrounding environment to make the three-dimensional model of the surrounding environment fit with the two-dimensional topographic map and the three-dimensional topographic map.
7. A treatment method of a municipal sewage surrounding environment model is characterized by comprising the following steps:
establishing three-dimensional models of the surrounding environment of the sewage corresponding to different time periods based on the image data of the surrounding environment of the target sewage collected in different time periods;
publishing a basic topographic map of the target sewage surrounding environment, wherein the basic topographic map comprises a two-dimensional topographic map and a three-dimensional topographic map;
tiling the three-dimensional model of the surrounding environment to obtain a plurality of three-dimensional submodels of the sewage surrounding environment with different resolutions, and respectively converting the three-dimensional submodels of the surrounding environment with different resolutions into corresponding first text files; correspondingly and respectively performing tiling treatment on the two-dimensional topographic map and the three-dimensional topographic map according to the resolution of the three-dimensional submodel of the sewage surrounding environment, respectively converting the two-dimensional topographic map and the three-dimensional topographic map into a second text file and a third text file which correspond to each other, establishing a first index file, a second index file and a third index file which correspond to the first text file, the second text file and the third text file, and calling the text files with different resolutions by using the index files;
fusing a first text file, a second text file and a third text file which correspond to the target time period and have the same resolution ratio to obtain a visual surrounding environment three-dimensional model corresponding to the target sewage;
the three-dimensional model of the sewage surrounding environment is established in a space rectangular coordinate system; the method comprises the following steps of obtaining a plurality of sewage surrounding environment three-dimensional submodels with different resolutions:
taking a point with the maximum Z coordinate value in a space triangle contained by each three-dimensional object in the three-dimensional model of the sewage surrounding environment as a vertex of a first space triangle;
determining the spatial position of the vertex of other spatial triangles contained in each three-dimensional object in the three-dimensional model of the sewage surrounding environment by taking the vertex of the first spatial triangle as a spatial reference, and further determining the spatial topological relation between the vertex of each spatial triangle in the three-dimensional model of the sewage surrounding environment and the corresponding spatial triangle;
and setting the vertex sets to be called and the number of the space triangles to be rendered under each resolution, further obtaining three-dimensional sub-model copies of the sewage surrounding environment with different resolutions, and establishing a first index file.
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