A natural resource remote collaborative survey method, system, device and medium thereof

Abstract

The present application discloses a method, system, device and medium for remote collaborative investigation of natural resources. The method comprises constructing a three-dimensional basic topographic map in a three-dimensional natural resource management platform; performing format conversion and monomer processing on an initial oblique photography model to obtain an oblique photography model; constructing an initial target real-scene three-dimensional model according to the three-dimensional basic topographic map, vector data, vector slicing rules and the oblique photography model, performing model optimization, scene optimization processing and rendering optimization processing on the initial target real-scene three-dimensional model to obtain an optimized target real-scene three-dimensional model; in the three-dimensional natural resource management platform, performing a remote collaborative investigation based on an acquired remote collaborative investigation request, and collaboratively modifying a corresponding scene of the target real-scene three-dimensional model based on an acquired scene data modification instruction; the present application has the effect of improving the scene realism of the real-scene three-dimensional model of the natural resource management platform, and improves the implementation efficiency of the investigation and verification of natural resources.

Description

Technical Field

[0001] The present application relates to the technical field of natural resource survey, and in particular to a natural resource remote collaborative survey method, system, equipment and medium thereof. Background Art

[0002] The traditional cadastral survey of natural resources requires the survey unit to first collect existing multi-source data, generate the required working drawings and preliminary cadastral survey forms, and then contact the relevant government departments in the location of the natural resources for on-site demarcation and verify whether the registration unit boundaries, ownership status and other information of the natural resources are correct. If there are any errors, they need to be recorded on the working drawings, subsequently entered into the natural resources management system for update, and then the working drawings are re-output and the relevant government departments in the location of the natural resources are contacted for signature confirmation. The entire survey and verification process is complicated, involving multiple on-site communication work, and the implementation efficiency is low.

[0003] With the development and progress of photogrammetry technology, natural resource cadastral survey and verification scenes can gradually be restored more accurately and realistically. Therefore, there has been research on methods for collaborative natural resource surveys based on real-life 3D models. Although the 3D natural resource management platforms currently on the market can load real-life 3D models, most of them use Cesium's 3D engine framework. Although they can realize the visualization and rendering of various 3D geographic spatial information, their scenes still lack a sense of hierarchy and the scene realism is low, so there is room for improvement. Summary of the invention

[0004] In order to improve the scene realism of the real-life three-dimensional model of the natural resource management platform and improve the implementation efficiency of the investigation and verification of natural resources, the present application provides a natural resource remote collaborative investigation method, system, equipment and medium thereof.

[0005] In the first aspect, the invention objective of the present application is achieved by adopting the following technical solutions:

[0006] A natural resource remote collaborative survey method, comprising:

[0007] In the three-dimensional natural resource management platform, a three-dimensional basic topographic map is constructed based on the acquired digital elevation model data of the target resource registration area; vector data of the target resource registration area and corresponding vector slicing rules are collected;

[0008] Acquire an initial oblique photography model of the target resource registration area, perform format conversion and monomer processing on the initial oblique photography model, and obtain an oblique photography model;

[0009] Constructing an initial target real-scene 3D model according to the 3D basic topographic map, vector data, corresponding vector slicing rules, and the oblique photography model, and optimizing the initial target real-scene 3D model; performing scene optimization processing and rendering optimization processing on the initial target real-scene 3D model in sequence to obtain an optimized target real-scene 3D model;

[0010] In the three-dimensional natural resource management platform, based on the obtained remote collaborative investigation request, a remote collaborative investigation is performed in combination with the scene in the target real-life three-dimensional model, and based on the obtained scene data modification instruction, the corresponding scene of the target real-life three-dimensional model is collaboratively modified.

[0011] By adopting the above technical solution, natural resource survey units integrate existing multi-source data, construct real-life three-dimensional natural resource survey scenes, and optimize rendering effects and performance to build more lifelike three-dimensional scenes, allowing relevant government departments in the location of natural resources to intuitively experience the actual environment as if they were there, so that online surveys can be carried out smoothly, which is conducive to improving the implementation efficiency of natural resource surveys and verifications; specifically, in order to improve the scene realism of the real-life three-dimensional model of the natural resource management platform, a more realistic target real-life three-dimensional model is obtained.

[0012] This application first constructs a three-dimensional basic topographic map through digital elevation model data to improve the quality of terrain data, and then collects vector data and corresponding vector slicing rules of the target resource registration area to facilitate the subsequent efficient loading and rendering of the real scene. The next step is to convert the format and monomerize the initial oblique photography model. The format conversion is to enhance the system compatibility of the target real-life three-dimensional model. The monomerization processing can obtain a three-dimensional model monomer, and construct a three-dimensional model monomer that can be independently analyzed and expressed based on independent objects of geographic entities; then, after constructing the initial target real-life three-dimensional model corresponding to the target resource registration area, continue to perform scene optimization and rendering optimization processing. Scene optimization improves the visualization effect of various three-dimensional geographic spatial information of the initial target real-life three-dimensional model and the subsequent rendering efficiency, and enables the target real-life three-dimensional model to better present the terrain and landform conditions. Rendering optimization further By simulating the environmental rendering effects (such as water surface rendering effects and atmospheric rendering effects) in the natural resource survey scene, the purpose of improving the scene realism of the target real-scene three-dimensional model of the natural resource management platform is achieved; further, in the three-dimensional natural resource management platform, the business data in the investigation and verification process can be integrated with the real-scene of the target real-scene three-dimensional model for display and scene sharing, and remote collaborative investigation operations can be carried out through online interactive remote online collaboration. When the on-site investigators verify that the information such as the registration unit boundary and ownership status is incorrect, the real-scene data representing the target real-scene three-dimensional model is incorrect. At this time, the corresponding scene is collaboratively modified through the scene data modification instruction. Through the collaborative modification method, the relevant government departments in the location of the natural resources will make final confirmation of the modified data and scene. After confirmation, they can also use the system to perform online electronic signature to complete the entire investigation process, which is more convenient to operate.

[0013] In a preferred example of the present application, in the three-dimensional natural resource management platform, a three-dimensional basic topographic map is constructed according to the acquired digital elevation model data of the target resource registration area, including:

[0014] Based on the acquired video photography information, satellite remote sensing data or the database of the three-dimensional natural resource management platform, initial digital elevation model data is obtained, and data preprocessing is performed on the initial digital elevation model data to obtain digital elevation model data;

[0015] Importing the digital elevation model data into a three-dimensional natural resource management platform through a three-dimensional visualization plug-in, and obtaining a terrain height map based on the digital elevation model data;

[0016] A three-dimensional basic topographic map is constructed based on the digital elevation model data and the topographic elevation map.

[0017] By adopting the above technical solution, the video photography information is video image data such as aerial camera images or surveillance videos, the satellite remote sensing data is the information of the target resource registration area obtained by satellite remote sensing technology, and the initial digital elevation model data is also called DEM data (Digital Elevation Model); the three-dimensional visualization plug-in includes the Cesium forUnreal plug-in. The three-dimensional visualization plug-in can effectively render and analyze multi-source, massive geographic spatial data. It has obvious advantages in combining real-world geographic information with high-quality three-dimensional rendering capabilities, and is suitable for application scenarios that require high realism and large-scale geospatial data processing, thereby improving the scene realism of the real-life three-dimensional model of the natural resource management platform; the data preprocessing of the initial digital elevation model data includes data processing methods such as cropping, smoothing and interpolation to improve the data quality of the digital elevation model data; the terrain height map and the three-dimensional basic terrain map facilitate subsequent scene rendering and improve the scene realism of the real scene of the natural resource survey.

[0018] In a preferred example of the present application, the collecting of vector data of the target resource registration area and the corresponding vector slicing rules includes:

[0019] Acquire a plurality of natural resource registration units in the target resource registration area, and based on the plurality of natural resource registration units, acquire vector data corresponding to each of the natural resource registration units, wherein the vector data includes resource survey business data of the natural resource registration unit;

[0020] Publishing the vector data through a spatial geographic information sharing server, wherein the vector data is published as a network element service or a vector data service, and the spatial geographic information sharing server adds the vector data as a data source of a database;

[0021] Based on the obtained vector slicing setting instruction, a vector slicing rule for the vector data is obtained.

[0022] By adopting the above technical solution, vector data can accurately express the spatial position of geographic entities (referring to the target resource registration area) as much as possible by recording coordinates, and the accuracy and precision of data recording and data presentation are high; the spatial geographic information sharing server includes a GeoServer server; the network feature service is also called WMS service (web map service), and the vector data service is also called WFS service (Walmart fulfilment service). The vector slicing rules can be defined and pre-set according to the needs of investigators. By using the spatial geographic information sharing server to publish vector data and vector slices of the target resource registration area, it is convenient to efficiently load the oblique photography model and the target real-life three-dimensional model, and to improve the subsequent rendering efficiency and loading and rendering effect of the target real-life three-dimensional model.

[0023] In a preferred example of the present application, the initial oblique photography model of the target resource registration area is obtained, and the initial oblique photography model is format converted and singulated to obtain the oblique photography model, including:

[0024] Acquire an initial oblique photography model of the target resource registration area, and convert the format of the initial oblique photography model by using a three-dimensional modeling tool or a format conversion tool;

[0025] In the three-dimensional modeling tool, the initial oblique photography model is segmented into a plurality of independent model entities; a plurality of the independent model entities are associated with model entity identifiers to obtain model entity attribute information.

[0026] By adopting the above technical solution, since in actual application, the initial oblique photography model is a binary stream type data structure of a three-dimensional model, such as the OSGB format, in order to improve the system compatibility of the initial oblique photography model and facilitate browsing in the browser, it is necessary to convert it into a standard format that complies with relevant standards (such as the Open Geographic Information Consortium, OGC), such as converting the OSGB format into the 3D Tiles format, and monomerizing the initial oblique photography model through a three-dimensional modeling tool, so as to effectively ensure that each three-dimensional model monomer in the initial oblique photography model can accurately display its corresponding attribute information, so as to construct the geographic entity (referring to the natural resource registration unit) into an independent object in three-dimensional form, which can independently express, attach attributes, query statistics and analysis, etc., thereby improving the true restoration of the initial oblique photography model.

[0027] In a preferred example of the present application, the initial target real-scene 3D model is subjected to scene optimization processing and rendering optimization processing in sequence to obtain an optimized target real-scene 3D model, including:

[0028] Performing mesh optimization processing on the initial target real-scene three-dimensional model according to a preset mesh optimization algorithm;

[0029] The texture of the initial target real-scene three-dimensional model is optimized by using a texture merging algorithm, an acquired camera sensing distance, and a texture processing priority strategy;

[0030] Acquire the water depth and transparency of the water surface in the target resource registration area, simulate the water wave normal of the water surface, simulate the water surface reflection and refraction through the water wave normal, water depth and transparency, and optimize the water body rendering of the initial target real-scene three-dimensional model based on the acquired rendering material;

[0031] Based on a preset volume light approximation simulation algorithm and the acquired volume cloud patch information, atmospheric rendering optimization is performed in the initial target real-scene three-dimensional model to obtain an optimized target real-scene three-dimensional model.

[0032] By adopting the above technical solutions, scene optimization processing includes mesh optimization and texture optimization processing. Scene optimization is conducive to improving model rendering efficiency, and can dynamically adjust texture loading and unloading behaviors based on camera sensing distance (also known as camera distance) and texture processing priority strategy, thereby reducing the memory usage of the three-dimensional natural resource management platform and speeding up texture loading speed; rendering optimization includes water body rendering optimization and atmospheric rendering optimization. Water body rendering optimization can simulate realistic water surface ripple effects, while atmospheric rendering optimization can simulate a three-dimensional volumetric cloud effect in the sky area of ​​the target real-life three-dimensional model, thereby improving the rendering effect and scene restoration of the target real-life three-dimensional model.

[0033] In a preferred example of the present application, the initial target real-scene 3D model is constructed based on the 3D basic topographic map, vector data, corresponding vector slicing rules and the oblique photography model, and the initial target real-scene 3D model is optimized, including:

[0034] By means of a preset 3D visualization plug-in, an initial target real-scene 3D model is constructed according to the 3D basic topographic map, vector data, corresponding vector slicing rules and the oblique photography model;

[0035] Optimizing the texture resolution of the initial target real-scene 3D model based on a physically rendered material, and loading the initial target real-scene 3D model with different details based on the acquired camera sensing distance and multi-level-of-detail rendering instructions;

[0036] The initial target real-scene three-dimensional model is mesh optimized using a preset mesh simplification tool.

[0037] By adopting the above technical solution, physical rendering materials such as PBR materials (Physically Based Rendering) are used based on the acquired camera sensing distance and the initial target real-life 3D model with different details loaded, and the multi-level-of-detail rendering technology of the multi-level-of-detail rendering instructions is used to achieve the effect of art optimization. Furthermore, the mesh simplification tool is used to optimize the mesh of the initial target real-life 3D model to optimize the model topology result and improve rendering efficiency.

[0038] In a preferred example of the present application: after constructing the three-dimensional basic topographic map according to the digital elevation model data and the topographic elevation map, the present application further includes:

[0039] Based on a preset terrain cascade processing component and an acquired terrain component resolution setting instruction, the terrain of the three-dimensional basic terrain map is divided into a plurality of terrain components with different resolution levels, and the plurality of terrain components display corresponding resolution levels based on the acquired terrain component parameter setting instruction and corresponding visual positioning information.

[0040] By adopting the above technical solution, in actual applications, on the basis of meeting the purpose of remote collaborative investigation and registration of natural resources, for the sake of economic cost and visual effect, this application also uses a terrain cascade processing component to divide the constructed three-dimensional basic topographic map into multiple resolution levels, so that different terrain components have different resolution levels according to their importance or actual investigation needs. For example, key locations such as river embankments require high resolution and real scenes for investigation, while housing areas can be loaded at low resolution. When viewing terrain components, investigators can also load appropriate levels of details based on the actual viewing angle and the actual position of the terrain components, which is conducive to the efficient loading of three-dimensional basic topographic maps.

[0041] In the second aspect, the invention objective of the present application is achieved by adopting the following technical solutions:

[0042] A natural resources remote collaborative survey system, used to execute the natural resources remote collaborative survey method as described above, the system comprises:

[0043] The three-dimensional terrain construction and vector data processing module is used to construct a three-dimensional basic terrain map based on the acquired digital elevation model data of the target resource registration area; collect the vector data of the target resource registration area and the corresponding vector slicing rules;

[0044] The oblique photography model processing module is used to obtain the initial oblique photography model of the target resource registration area, perform format conversion and monomer processing on the initial oblique photography model, and obtain the oblique photography model;

[0045] A target real-scene 3D model optimization module is used to construct an initial target real-scene 3D model based on the 3D basic topographic map, vector data, corresponding vector slicing rules, and an oblique photography model, and to optimize the initial target real-scene 3D model; and to sequentially perform scene optimization processing and rendering optimization processing on the initial target real-scene 3D model to obtain an optimized target real-scene 3D model;

[0046] A remote collaborative investigation and collaborative modification module is used to conduct a remote collaborative investigation in the three-dimensional natural resource management platform based on the acquired remote collaborative investigation request and in combination with the scene in the target real-life three-dimensional model, and to collaboratively modify the corresponding scene of the target real-life three-dimensional model based on the acquired scene data modification instructions.

[0047] By adopting the above technical scheme, in order to improve the scene realism of the real-life three-dimensional model of the natural resource management platform and obtain a target real-life three-dimensional model with stronger realism, the present application first constructs a three-dimensional basic topographic map through digital elevation model data to improve the quality of terrain data, and then collects vector data and corresponding vector slicing rules of the target resource registration area to facilitate the subsequent efficient loading and rendering of the real scene. The next step is to perform format conversion and monomerization on the initial oblique photography model. The format conversion is to enhance the system compatibility of the target real-life three-dimensional model. The monomerization processing can obtain a three-dimensional model monomer, and construct a three-dimensional model monomer that can be independently analyzed and expressed based on an independent object of a geographic entity; then, after constructing the initial target real-life three-dimensional model corresponding to the target resource registration area, continue to perform scene optimization and rendering optimization processing. The scene optimization improves the visualization effect and subsequent rendering efficiency of various three-dimensional geographic spatial information of the initial target real-life three-dimensional model, and makes the target real-life three-dimensional The model can better present the terrain and landform conditions, and the rendering optimization further simulates the environmental rendering effects (such as water surface rendering effects and atmospheric rendering effects) in the natural resource survey scene, thereby achieving the purpose of improving the scene realism of the target real-scene three-dimensional model of the natural resource management platform; further, in the three-dimensional natural resource management platform, the business data in the investigation and verification process can be integrated with the real-scene scene of the target real-scene three-dimensional model for display and scene sharing, and remote collaborative investigation operations can be carried out through online interactive remote online collaboration. When the on-site investigators verify that the registration unit boundaries, ownership status and other information are incorrect, the real-scene data representing the target real-scene three-dimensional model is incorrect. At this time, the corresponding scene is collaboratively modified through the scene data modification instructions. Through the collaborative modification method, the relevant government departments in the location of the natural resources will make final confirmation of the modified data and scenes. After confirmation, they can also use the system to perform online electronic signatures to complete the entire investigation process, which is more convenient to operate.

[0048] In the third aspect, the invention objective of the present application is achieved by adopting the following technical solutions:

[0049] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the above-mentioned natural resource remote collaborative investigation method are implemented.

[0050] In a fourth aspect, the invention objective of the present application is achieved by adopting the following technical solutions:

[0051] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the above-mentioned natural resource remote collaborative investigation method.

[0052] In summary, the present application includes at least one of the following beneficial technical effects:

[0053] 1. In order to improve the scene realism of the real-life 3D model of the natural resource management platform and obtain a target real-life 3D model with a stronger sense of reality, this application first constructs a 3D basic topographic map through digital elevation model data to improve the quality of terrain data, and then collects vector data and corresponding vector slicing rules of the target resource registration area to facilitate the subsequent efficient loading and rendering of the real scene. The next step is to perform format conversion and monomerization on the initial oblique photography model. The format conversion is to enhance the system compatibility of the target real-life 3D model. The monomerization can obtain a 3D model monomer, and construct a 3D model monomer that can be independently analyzed and expressed based on an independent object of a geographic entity; then, after constructing the initial target real-life 3D model corresponding to the target resource registration area, continue to perform scene optimization and rendering optimization processing. The scene optimization improves the visualization effect of various 3D geographic spatial information of the initial target real-life 3D model and the subsequent rendering efficiency, and enables the target real-life 3D model to be more The rendering optimization further simulates the environmental rendering effects (such as water surface rendering effects and atmospheric rendering effects) in the natural resource survey scene, thereby achieving the purpose of improving the scene realism of the target real-scene 3D model of the natural resource management platform; further, in the 3D natural resource management platform, the business data in the survey and verification process can be integrated with the real-scene scene of the target real-scene 3D model for display and scene sharing, and remote collaborative survey operations can be carried out through online interactive remote online collaboration. When the on-site investigators verify that the information such as the boundary of the registration unit and the ownership status is incorrect, the real-scene data representing the target real-scene 3D model is incorrect. At this time, the corresponding scene is collaboratively modified through the scene data modification instruction. Through the collaborative modification method, the relevant government departments in the location of the natural resources will finally confirm the modified data and scene. After confirmation, the system can also be used to perform online electronic signatures to complete the entire survey process, which is more convenient to operate;

[0054] 2. Vector data uses coordinates to accurately represent the spatial location of geographic entities (referring to the target resource registration area) as much as possible, and the data recording and presentation are accurate and precise; the spatial geographic information sharing server includes the GeoServer server; the network feature service is also called the WMS service (web map service), the vector data service is also called the WFS service (Walmart fulfilment service), and the vector slicing rules can be defined and pre-set according to the needs of the investigators. By using the spatial geographic information sharing server to publish the vector data and vector slices of the target resource registration area, it is convenient to efficiently load the oblique photography model and the target real-scene 3D model, and to improve the subsequent rendering efficiency and loading rendering effect of the target real-scene 3D model;

[0055] 3. In practical applications, on the basis of meeting the purpose of remote collaborative investigation and registration of natural resources, for the sake of economic cost and visual effect, this application also uses terrain cascade processing components to divide the constructed three-dimensional basic topographic map into multiple resolution levels, so that different terrain components have different resolutions according to their importance or actual investigation needs. For example, key locations such as river embankments require high resolution and real scenes for investigation, while housing areas can be loaded at low resolution. When viewing terrain components, investigators can also load appropriate levels of details based on the viewing angle and the actual position of the terrain components, which is conducive to the efficient loading of three-dimensional basic topographic maps. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a flow chart of a natural resource remote collaborative survey method in one embodiment of the present application;

[0057] Figure 2 It is a flow chart of step S1 in a natural resource remote collaborative survey method in one embodiment of the present application;

[0058] Figure 3 is another flow chart of step S1 in a natural resource remote collaborative survey method in one embodiment of the present application;

[0059] Figure 4 It is a flow chart of step S3 in a natural resource remote collaborative survey method in one embodiment of the present application;

[0060] Figure 5 is another flow chart of step S3 in a natural resource remote collaborative survey method in one embodiment of the present application;

[0061] Figure 6 It is a schematic diagram of a device in an embodiment of the present application. DETAILED DESCRIPTION

[0062] The present application is further described in detail below in conjunction with the accompanying drawings.

[0063] In one embodiment, if Figure 1 As shown, the present application discloses a natural resources remote collaborative survey method, which specifically includes the following steps:

[0064] S1: In the three-dimensional natural resource management platform, a three-dimensional basic topographic map is constructed based on the digital elevation model data of the target resource registration area; vector data of the target resource registration area and the corresponding vector slicing rules are collected.

[0065] In this embodiment, the digital elevation model data is also called DEM data; the vector data includes business data such as boundary lines, boundary point locations, natural resource type information, ownership information of natural resource patches, land type information and ownership data of natural resource registration units, wherein the target resource registration area includes multiple independently divided natural resource registration units; the three-dimensional basic topographic map is created using the Landscape component.

[0066] The three-dimensional natural resource management platform enables the relevant government departments in the location of natural resources to intuitively experience the actual environment as if they were there, allowing online surveys to be carried out smoothly. It can also assist the relevant government departments and survey units in the location of natural resources to complete remote collaborative surveys and resource registration work, such as online data confirmation and online electronic signatures. Through the three-dimensional natural resource management platform of this application, the entire operation process of natural resource surveys and natural resource registration can be completed online and automated, reducing tedious on-site surveys and paper material processing, and realizing the efficiency and digitization of survey work.

[0067] Specifically, in order to improve the scene realism of the real-life three-dimensional model of the natural resource management platform and obtain a more realistic target real-life three-dimensional model, this application first constructs a three-dimensional basic topographic map through digital elevation model data to improve the quality of terrain data, and then collects vector data and corresponding vector slicing rules of the target resource registration area to facilitate subsequent efficient loading and rendering of the real scene. The vector slicing rules can be customized according to the investigators' own practical needs and the server performance of the natural resource management platform.

[0068] S2: Obtain an initial oblique photography model of the target resource registration area, perform format conversion and monomer processing on the initial oblique photography model, and obtain an oblique photography model.

[0069] In this embodiment, the format conversion is to enhance the system compatibility of the target real-scene 3D model, and convert the 3D initial oblique photography model into a mode compatible with ordinary browsers. Since the initial oblique photography model is a binary stream type data structure of the 3D model, that is, the OSGB format, it is converted into a standard format that complies with relevant standards (such as the Open Geographic Information Consortium, OGC). This application converts the OSGB format into the 3D Tiles format. The monomerization process can obtain a 3D model monomer, and construct a 3D model monomer that can be independently analyzed and expressed based on an independent object of a geographic entity.

[0070] S3: construct an initial target real-scene three-dimensional model based on the three-dimensional basic topographic map, vector data and corresponding vector slicing rules and the oblique photography model, and optimize the initial target real-scene three-dimensional model; perform scene optimization processing and rendering optimization processing on the initial target real-scene three-dimensional model in turn to obtain an optimized target real-scene three-dimensional model.

[0071] In this embodiment, model optimization includes art optimization and mesh optimization, wherein art optimization includes improving texture resolution and optimizing multiple levels of detail, and mesh optimization includes reducing the number of network polygons and optimizing the topological structure. Model optimization can improve the realism of model scenes and scene rendering efficiency.

[0072] Specifically, scene optimization improves the visualization effect and subsequent rendering efficiency of various three-dimensional geographic spatial information of the initial target real-scene three-dimensional model, and enables the target real-scene three-dimensional model to better present the terrain and landform conditions. Rendering optimization further simulates the environmental rendering effects (such as water surface rendering effects and atmospheric rendering effects) in the natural resource survey scene, thereby achieving the purpose of improving the scene realism of the target real-scene three-dimensional model of the natural resource management platform.

[0073] S4: In the three-dimensional natural resource management platform, based on the remote collaborative investigation request obtained, a remote collaborative investigation is conducted in combination with the scene in the target real-life three-dimensional model, and the corresponding scene of the target real-life three-dimensional model is collaboratively modified based on the obtained scene data modification instructions.

[0074] In this embodiment, the survey unit modifies the data (including business data and scenario data) in the three-dimensional natural resource management platform based on the feedback from the relevant government departments in the location of the natural resources to solve the problems found. The modified scenario data and scenarios are updated instantly without waiting for the modification and re-output of paper maps.

[0075] Specifically, the present application provides a remote collaborative survey method for natural resources based on Cesium for Unreal, that is, the three-dimensional natural resource management platform and the target real-life three-dimensional model are implemented based on the three-dimensional earth visualization plug-in of Cesium for Unreal. Cesium for Unreal can meet the rendering and processing requirements of highly realistic and massive geographic spatial data and business data of survey units, so that the target real-life three-dimensional model can present a more realistic and dynamic visual effect on the three-dimensional natural resource management platform than the traditional geographic space.

[0076] In this embodiment, in the three-dimensional natural resource management platform, the business data in the investigation and verification process can also be integrated with the real-life scene of the target real-life three-dimensional model for display and scene sharing. Through online interactive remote online collaboration, remote collaborative investigation operations can be carried out. When the on-site investigators verify that the registration unit boundaries, ownership status and other information are incorrect, the real-life data representing the target real-life three-dimensional model is incorrect. At this time, the corresponding scene is collaboratively modified through scene data modification instructions. Through the collaborative modification method, the relevant government departments in the location of the natural resources will make final confirmation of the modified data and scene. After confirmation, the system can also be used to perform online electronic signatures to complete the entire investigation process, which is more convenient to operate.

[0077] In one embodiment, if Figure 2 As shown, in step S1, in the three-dimensional natural resource management platform, a three-dimensional basic topographic map is constructed according to the acquired digital elevation model data of the target resource registration area, including:

[0078] S11: obtaining initial digital elevation model data based on acquired video photography information, satellite remote sensing data or a database of a three-dimensional natural resource management platform, and performing data preprocessing on the initial digital elevation model data to obtain digital elevation model data.

[0079] In this embodiment, the video photography information is aerial camera images or surveillance videos, and the satellite remote sensing data is information on the target resource registration area obtained through satellite remote sensing technology; data preprocessing of the initial digital elevation model data includes using GIS software to perform cropping, smoothing and interpolation processing to improve data quality.

[0080] S12: Import the digital elevation model data into the three-dimensional natural resource management platform through the three-dimensional visualization plug-in, and obtain the terrain height map based on the digital elevation model data.

[0081] In this embodiment, the three-dimensional visualization plug-in is a Cesium for Unreal plug-in, which imports the digital elevation model data into the three-dimensional natural resource management platform through the Landscape component, and converts the digital elevation model data into a grayscale image, such as converting it into DOM data, and setting it as a terrain height map.

[0082] S13: Construct a three-dimensional basic topographic map based on the digital elevation model data and the topographic elevation map.

[0083] In this embodiment, the Landscape component is used to construct a three-dimensional basic terrain map, and the size and segmentation of the terrain component are set in the constructed three-dimensional basic terrain map to match the actual geographical range.

[0084] Specifically, the terrain height map and the three-dimensional basic terrain map facilitate subsequent scene rendering and improve the scene realism of the natural resource survey scene.

[0085] In one embodiment, if Figure 3 As shown, in step S1, vector data of the target resource registration area and corresponding vector slicing rules are collected, including:

[0086] S101: Acquire a number of natural resource registration units in a target resource registration area, and based on the number of natural resource registration units, acquire vector data corresponding to each natural resource registration unit, wherein the vector data includes resource survey business data of the natural resource registration unit.

[0087] In this embodiment, vector data records coordinates to accurately represent the spatial location of geographic entities (referring to target resource registration areas) as much as possible, and data recording and presentation are highly precise and accurate; the spatial geographic information sharing server is a GeoServer server.

[0088] Specifically, vector data such as boundary lines, boundary points, etc. of all natural resource registration units are collected.

[0089] S102: Publishing vector data through a spatial geographic information sharing server. The vector data is published as a network feature service or a vector data service. The spatial geographic information sharing server adds the vector data as a data source of a database.

[0090] In this embodiment, the network feature service is also called WMS service (web map service), and the vector data service is also called WFS service (Walmart fulfilment service).

[0091] S103: Based on the obtained vector slicing setting instruction, obtain vector slicing rules of the vector data.

[0092] In this embodiment, the vector slice setting instructions are for investigators through the three-dimensional natural resource management platform; the vector slice rules can be defined and preset according to the needs of the investigators, and the vector data and vector slices of the target resource registration area are published by using the spatial geographic information sharing server to facilitate the efficient loading of the oblique photography model and the target real-life three-dimensional model, and to facilitate the improvement of the subsequent rendering efficiency and loading and rendering effect of the target real-life three-dimensional model.

[0093] In one embodiment, in step S2, an initial oblique photography model of the target resource registration area is obtained, and the initial oblique photography model is format converted and singulated to obtain an oblique photography model, including:

[0094] S21: Acquire an initial oblique photography model of the target resource registration area, and convert the format of the initial oblique photography model using a three-dimensional modeling tool or a format conversion tool.

[0095] In this embodiment, since in actual application, the initial oblique photography model is a binary stream type data structure of a three-dimensional model, such as the OSGB format, in order to improve the system compatibility of the initial oblique photography model, it is necessary to convert its format into a standard format that complies with relevant standards (such as the Open Geographic Information Consortium, OGC), such as converting the OSGB format into the 3D Tiles format.

[0096] S22: In the three-dimensional modeling tool, the initial oblique photography model is divided into a plurality of independent model entities; the plurality of independent model entities are associated with model entity identifiers to obtain model entity attribute information.

[0097] In this embodiment, the three-dimensional modeling tool is a three-dimensional modeling software, and the entity identifier is a unique natural resource information identifier of the building model entity, and multiple model entities are distinguished by the entity identifier.

[0098] Specifically, the initial oblique photography model is monomerized through 3D modeling tools to effectively ensure that each 3D model monomer in the initial oblique photography model can accurately display its corresponding attribute information, so as to construct the geographic entity (referring to the natural resource registration unit) into an independent object in three-dimensional form, which can independently express, attach attributes, query statistics and analysis, etc., thereby improving the authenticity of the initial oblique photography model.

[0099] In one embodiment, if Figure 4 As shown, in step S3, the initial target real-scene 3D model is sequentially subjected to scene optimization processing and rendering optimization processing to obtain an optimized target real-scene 3D model, including:

[0100] S31: performing mesh optimization processing on the initial target real-scene 3D model according to a preset mesh optimization algorithm.

[0101] In this embodiment, the mesh optimization algorithm is the MeshOpt algorithm. Compared with the traditional MeshQuan algorithm and Draco algorithm, the MeshOpt algorithm has a higher compression rate while taking into account the model quality, and has a better overall effect. The MeshQuan algorithm has a high compression rate but will affect the model quality, and the Draco algorithm may change the order and number of vertices in the mesh, causing the model to be distorted.

[0102] S32: Optimizing the texture of the initial target real-scene 3D model through a texture merging algorithm, the acquired camera sensing distance, and a texture processing priority strategy.

[0103] Specifically, the texture merging algorithm is also called texture merging technology. The present application uses texture merging and texture streaming technology to optimize textures. The texture merging technology combines multiple textures into a large texture atlas, thereby reducing the number of textures to improve rendering performance and memory utilization. When merging textures, attention should be paid to edge processing at the boundaries to ensure that the merged textures are seamlessly connected. The texture streaming technology uses a strategy based on camera sensing distance (also called camera distance) and texture processing priority to dynamically adjust the loading and unloading behavior of textures, reduce memory usage and speed up texture loading.

[0104] S33: Obtain the water depth and transparency of the water surface in the target resource registration area, simulate the water wave normal of the water surface, simulate the water surface reflection and refraction through the water wave normal, water depth and transparency, and optimize the water body rendering of the initial target real-scene three-dimensional model based on the acquired rendering material.

[0105] In this embodiment, the water wave normal lines are arranged in multiple layers on the water surface of the target resource registration area, and each layer is arranged with multiple lines.

[0106] Specifically, since the transparency of the water body is related to the depth, the greater the depth, the lower the transparency; at the same time, the increase in the Fresnel coefficient will also reduce the transparency. This application uses the depth of the water body plus the Fresnel coefficient multiplied by DepthFade as the corrected opacity of the water body, thereby realizing a dynamic transparent water body that changes with the depth of the water body and the refraction effect; then the water surface ripple effect of the water surface in the target resource registration area is simulated by means of a water wave normal map. The normal map combined with UV animation can make the ripples on the water surface move, thereby realizing the flow effect of the water body; and because a layer of water wave normals moving in a fixed direction looks a bit dull and repetitive, and the real waves are the product of multiple waves superimposed, this application also performs multiple different scaling and offsets in different directions on the water wave normals, and then mixes the multiple sampling results to simulate the effect of superimposing waves of different frequencies and directions, thereby realizing realistic water surface ripples.

[0107] Finally, the reflection and refraction effects of the water surface in the target resource registration area are realized: first, the reflection effect is realized through the reflection probe, then a material is rendered below the horizontal plane, and its UV animation is disturbed by the water wave normal or noise texture, and then the rendered material is resampled to make it show the refraction effect. Finally, Fresnel material is added to the water body to achieve the fusion companion effect of reflection and refraction in the transparent material, thereby achieving the effect of water body rendering optimization.

[0108] S34: Based on a preset volume light approximation simulation algorithm and the obtained volume cloud patch information, an atmospheric rendering optimization is performed in the initial target real scene three-dimensional model to obtain an optimized target real scene three-dimensional model.

[0109] Specifically, a relatively large patch is first arranged in a designated aerial area, and the patch is divided and pushed outward according to a shadow map in the direction of the light source, so as to obtain a volumetric light effect of a desired shape.

[0110] In this embodiment, the volume light approximation simulation algorithm uses the Raymarching method to achieve the volume cloud effect. In order to improve performance, the corresponding shadow can be calculated through the RaymarchHeightMap and the parallel light direction, and then the shadow is parallax mapped to quickly obtain a three-dimensional cloud map, thereby achieving the purpose of atmospheric rendering optimization.

[0111] In one embodiment, if Figure 5 As shown, in step S3, an initial target real scene 3D model is constructed based on the 3D basic topographic map, vector data, corresponding vector slicing rules and the oblique photography model, and the initial target real scene 3D model is optimized, specifically including:

[0112] S301: Using a preset 3D visualization plug-in, an initial target real-scene 3D model is constructed based on a 3D basic topographic map, vector data, corresponding vector slicing rules, and an oblique photography model.

[0113] In this embodiment, the three-dimensional basic topographic map, vector data and corresponding vector slicing rules are integrated into the Unreal Engine of the three-dimensional natural resource management platform, and the 3D Tiles data of the oblique photography model are imported using the TileMap component, and then the initial target real-scene three-dimensional model is constructed.

[0114] S302: Optimizing the texture resolution of the initial target real-scene 3D model based on the physically rendered material, and loading the initial target real-scene 3D model with different details based on the acquired camera sensing distance and multi-level-of-detail rendering instructions.

[0115] In this embodiment, a physical rendering material such as a PBR material (Physically Based Rendering), a camera sensor distance is also called a camera distance, and a multi-level of detail rendering instruction is input by creating an LOD to dynamically load an initial target real-scene 3D model of different details according to the camera sensor distance.

[0116] Specifically, based on the acquired camera sensing distance, an initial target real-scene three-dimensional model with different details is loaded, and the effect of art optimization is achieved through multi-level-of-detail rendering instructions.

[0117] S303: Use a preset mesh simplification tool to perform mesh optimization on the initial target real-scene 3D model.

[0118] Specifically, a mesh simplification tool is used to perform mesh optimization on the initial target real-scene 3D model to optimize the model topology results and improve rendering efficiency.

[0119] In one embodiment, after step S13, a natural resource remote collaborative survey method further includes:

[0120] S14: Based on the preset terrain cascade processing component and the obtained terrain component resolution setting instruction, the terrain of the three-dimensional basic terrain map is divided into multiple terrain components with different resolution levels, and the multiple terrain components display corresponding resolution levels based on the obtained terrain component parameter setting instruction and the corresponding visual positioning information.

[0121] In this embodiment, the three-dimensional basic terrain map is divided into multiple resolution levels through the terrain cascade processing component, and the terrain component details of appropriate levels are loaded in the three-dimensional natural resource management platform according to the viewing angle and position, so as to achieve the effect of efficient loading of terrain components.

[0122] Specifically, in actual applications, in addition to meeting the purpose of remote collaborative investigation and registration of natural resources, the requirements of economic cost and visual effect must be met. Therefore, the present application also uses a terrain cascade processing component to divide the constructed three-dimensional basic topographic map into multiple resolution levels, so that different terrain components have different resolutions according to their importance or actual investigation needs. For example, key locations such as river embankments require high resolution and real scenes for investigation, while housing areas can be loaded at a low resolution. When viewing terrain components, investigators can also load appropriate levels of details based on the viewing angle and the actual position of the terrain components, which is conducive to the efficient loading of three-dimensional basic topographic maps.

[0123] For example, the three-dimensional model of terrain in the three-dimensional basic topographic map is mainly constructed using 0.2-meter resolution downward high-resolution downward images; the three-dimensional model of concentrated housing areas is mainly based on the 5-cm tilt of aerial flight, while key locations such as river embankments require higher resolution.

[0124] It should be understood that the serial numbers of the steps in the above embodiments do not imply a sequence of execution. The execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0125] In one embodiment, a natural resource remote collaborative investigation system is provided, and the natural resource remote collaborative investigation system corresponds to a natural resource remote collaborative investigation method in the above-mentioned embodiment.

[0126] A natural resource remote collaborative survey system includes a 3D terrain construction and vector data processing module, an oblique photography model processing module, a target real scene 3D model optimization module, and a remote collaborative survey and collaborative modification module. The detailed description of each functional module is as follows:

[0127] The three-dimensional terrain construction and vector data processing module is used to construct a three-dimensional basic terrain map based on the digital elevation model data of the target resource registration area; collect the vector data of the target resource registration area and the corresponding vector slicing rules;

[0128] The oblique photography model processing module is used to obtain the initial oblique photography model of the target resource registration area, perform format conversion and monomer processing on the initial oblique photography model, and obtain the oblique photography model;

[0129] The target real-scene 3D model optimization module is used to construct an initial target real-scene 3D model based on the 3D basic topographic map, vector data and corresponding vector slicing rules and the oblique photography model, and optimize the initial target real-scene 3D model; the initial target real-scene 3D model is sequentially subjected to scene optimization processing and rendering optimization processing to obtain an optimized target real-scene 3D model;

[0130] The remote collaborative investigation and collaborative modification module is used in a three-dimensional natural resource management platform to conduct remote collaborative investigations based on the acquired remote collaborative investigation requests and in combination with the scenes in the target real-life three-dimensional model, and to collaboratively modify the corresponding scenes of the target real-life three-dimensional model based on the acquired scene data modification instructions.

[0131] For the specific limitations of a natural resource remote collaborative investigation system, please refer to the limitations of a natural resource remote collaborative investigation method mentioned above, which will not be repeated here; each module in the above-mentioned natural resource remote collaborative investigation system can be implemented in whole or in part through software, hardware and a combination thereof; each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0132] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 6As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store digital elevation model data, vector data, oblique photography models and target real-life three-dimensional models, etc. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for remote collaborative investigation of natural resources is implemented.

[0133] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0134] S1: In the 3D natural resource management platform, a 3D basic topographic map is constructed based on the acquired digital elevation model data of the target resource registration area; vector data of the target resource registration area and the corresponding vector slicing rules are collected;

[0135] S2: obtaining an initial oblique photography model of the target resource registration area, performing format conversion and monomer processing on the initial oblique photography model, and obtaining an oblique photography model;

[0136] S3: constructing an initial target real-scene 3D model based on the 3D basic topographic map, vector data, corresponding vector slicing rules, and the oblique photography model, and optimizing the initial target real-scene 3D model; performing scene optimization processing and rendering optimization processing on the initial target real-scene 3D model in turn to obtain an optimized target real-scene 3D model;

[0137] S4: In the three-dimensional natural resource management platform, based on the remote collaborative investigation request obtained, a remote collaborative investigation is conducted in combination with the scene in the target real-life three-dimensional model, and the corresponding scene of the target real-life three-dimensional model is collaboratively modified based on the obtained scene data modification instructions.

[0138] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0139] S1: In the 3D natural resource management platform, a 3D basic topographic map is constructed based on the acquired digital elevation model data of the target resource registration area; vector data of the target resource registration area and the corresponding vector slicing rules are collected;

[0140] S2: obtaining an initial oblique photography model of the target resource registration area, performing format conversion and monomer processing on the initial oblique photography model, and obtaining an oblique photography model;

[0141] S3: constructing an initial target real-scene 3D model based on the 3D basic topographic map, vector data, corresponding vector slicing rules, and the oblique photography model, and optimizing the initial target real-scene 3D model; performing scene optimization processing and rendering optimization processing on the initial target real-scene 3D model in turn to obtain an optimized target real-scene 3D model;

[0142] S4: In the three-dimensional natural resource management platform, based on the remote collaborative investigation request obtained, a remote collaborative investigation is conducted in combination with the scene in the target real-life three-dimensional model, and the corresponding scene of the target real-life three-dimensional model is collaboratively modified based on the obtained scene data modification instructions.

[0143] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0144] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0145] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some of the features thereof may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A natural resource remote collaborative survey method, characterized in that: include: In the 3D natural resource management platform, a 3D basic topographic map is constructed based on the acquired digital elevation model data of the target resource registration area; Collecting vector data of the target resource registration area and corresponding vector slicing rules; Acquire an initial oblique photography model of the target resource registration area, perform format conversion and monomer processing on the initial oblique photography model, and obtain an oblique photography model; Constructing an initial target real-scene 3D model according to the 3D basic topographic map, vector data, corresponding vector slicing rules, and the oblique photography model, and optimizing the initial target real-scene 3D model; performing scene optimization processing and rendering optimization processing on the initial target real-scene 3D model in sequence to obtain an optimized target real-scene 3D model; In the three-dimensional natural resource management platform, based on the acquired remote collaborative survey request, a remote collaborative survey is performed in combination with a scene in the target real-scene three-dimensional model, and based on the acquired scene data modification instruction, a corresponding scene of the target real-scene three-dimensional model is collaboratively modified; The method of constructing an initial target real-scene 3D model based on the 3D basic topographic map, vector data, corresponding vector slicing rules and the oblique photography model, and optimizing the initial target real-scene 3D model includes: By means of a preset 3D visualization plug-in, an initial target real-scene 3D model is constructed according to the 3D basic topographic map, vector data, corresponding vector slicing rules and the oblique photography model; Optimizing the texture resolution of the initial target real-scene 3D model based on a physically rendered material, and loading the initial target real-scene 3D model with different details based on the acquired camera sensing distance and multi-level-of-detail rendering instructions; The initial target real-scene three-dimensional model is mesh optimized using a preset mesh simplification tool.

2. A natural resource remote collaborative survey method according to claim 1, characterized in that: In the three-dimensional natural resource management platform, a three-dimensional basic topographic map is constructed according to the acquired digital elevation model data of the target resource registration area, including: Based on the acquired video photography information, satellite remote sensing data or the database of the three-dimensional natural resource management platform, initial digital elevation model data is obtained, and data preprocessing is performed on the initial digital elevation model data to obtain digital elevation model data; Importing the digital elevation model data into a three-dimensional natural resource management platform through a three-dimensional visualization plug-in, and obtaining a terrain height map based on the digital elevation model data; A three-dimensional basic topographic map is constructed based on the digital elevation model data and the topographic elevation map.

3. A natural resource remote collaborative survey method according to claim 1, characterized in that: The collecting of vector data of the target resource registration area and corresponding vector slicing rules includes: Acquire a plurality of natural resource registration units in the target resource registration area, and based on the plurality of natural resource registration units, acquire vector data corresponding to each of the natural resource registration units, wherein the vector data includes resource survey business data of the natural resource registration unit; Publishing the vector data through a spatial geographic information sharing server, wherein the vector data is published as a network element service or a vector data service, and the spatial geographic information sharing server adds the vector data as a data source of a database; Based on the obtained vector slicing setting instruction, a vector slicing rule for the vector data is obtained.

4. A natural resource remote collaborative survey method according to claim 1, characterized in that: The step of obtaining an initial oblique photography model of the target resource registration area, performing format conversion and monomer processing on the initial oblique photography model to obtain an oblique photography model includes: Acquire an initial oblique photography model of the target resource registration area, and convert the format of the initial oblique photography model by using a three-dimensional modeling tool or a format conversion tool; In the three-dimensional modeling tool, the initial oblique photography model is segmented into a plurality of independent model entities; a plurality of the independent model entities are associated with model entity identifiers to obtain model entity attribute information.

5. A natural resource remote collaborative survey method according to claim 1, characterized in that: The step of sequentially performing scene optimization processing and rendering optimization processing on the initial target real-scene 3D model to obtain an optimized target real-scene 3D model includes: Performing mesh optimization processing on the initial target real-scene three-dimensional model according to a preset mesh optimization algorithm; The texture of the initial target real-scene three-dimensional model is optimized by using a texture merging algorithm, an acquired camera sensing distance, and a texture processing priority strategy; Acquire the water depth and transparency of the water surface in the target resource registration area, simulate the water wave normal of the water surface, simulate the water surface reflection and refraction through the water wave normal, water depth and transparency, and optimize the water body rendering of the initial target real-scene three-dimensional model based on the acquired rendering material; Based on a preset volume light approximation simulation algorithm and the acquired volume cloud patch information, atmospheric rendering optimization is performed in the initial target real-scene three-dimensional model to obtain an optimized target real-scene three-dimensional model.

6. A natural resource remote collaborative survey method according to claim 2, characterized in that: After constructing the three-dimensional basic topographic map according to the digital elevation model data and the topographic elevation map, the method further includes: Based on a preset terrain cascade processing component and an acquired terrain component resolution setting instruction, the terrain of the three-dimensional basic terrain map is divided into a plurality of terrain components with different resolution levels, and the plurality of terrain components display corresponding resolution levels based on the acquired terrain component parameter setting instruction and corresponding visual positioning information.

7. A natural resources remote collaborative survey system, characterized in that: A system for executing a natural resource remote collaborative survey method as claimed in any one of claims 1 to 6, comprising: The three-dimensional terrain construction and vector data processing module is used to construct a three-dimensional basic terrain map based on the acquired digital elevation model data of the target resource registration area; collect the vector data of the target resource registration area and the corresponding vector slicing rules; The oblique photography model processing module is used to obtain the initial oblique photography model of the target resource registration area, perform format conversion and monomer processing on the initial oblique photography model, and obtain the oblique photography model; A target real-scene 3D model optimization module is used to construct an initial target real-scene 3D model based on the 3D basic topographic map, vector data, corresponding vector slicing rules, and an oblique photography model, and to optimize the initial target real-scene 3D model; and to sequentially perform scene optimization processing and rendering optimization processing on the initial target real-scene 3D model to obtain an optimized target real-scene 3D model; A remote collaborative investigation and collaborative modification module, which is used to perform a remote collaborative investigation in the three-dimensional natural resource management platform based on the acquired remote collaborative investigation request and in combination with the scene in the target real-scene three-dimensional model, and to collaboratively modify the corresponding scene of the target real-scene three-dimensional model based on the acquired scene data modification instruction; The method of constructing an initial target real-scene 3D model based on the 3D basic topographic map, vector data, corresponding vector slicing rules and the oblique photography model, and optimizing the initial target real-scene 3D model includes: By means of a preset 3D visualization plug-in, an initial target real-scene 3D model is constructed according to the 3D basic topographic map, vector data, corresponding vector slicing rules and the oblique photography model; Optimizing the texture resolution of the initial target real-scene 3D model based on a physically rendered material, and loading the initial target real-scene 3D model with different details based on the acquired camera sensing distance and multi-level-of-detail rendering instructions; The initial target real-scene three-dimensional model is mesh optimized using a preset mesh simplification tool.

8. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of a natural resource remote collaborative investigation method as described in any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of a natural resource remote collaborative investigation method as described in any one of claims 1 to 6 are implemented.

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