Topographic map and survey delimitation service data fusion and integrated area processing system and method

Abstract

The invention discloses a topographic map and survey delimitation service data fusion and integrated area processing system and method, and the efficiency and accuracy of data processing are remarkably improved through the modular design of data collection, preprocessing, association, storage management and area calculation adjustment. Through the scheme, the topographic map data and the survey delimiting data can be subjected to automatic format conversion, coordinate projection unification and accurate data association, errors caused by manual operation are eliminated, efficient integration and sharing of the data are achieved, and high consistency and high precision of the data are ensured. Besides, the area calculation and adjustment module provides flexible calculation modes and precision setting options, and especially under the support of multiple adjustment modes, the precision and efficiency of area calculation are greatly improved. And through a real-time feedback mechanism, the user can know the calculation progress and errors in time, and repeated labor and low-efficiency operation are avoided. The implementation of the system not only optimizes the data processing flow, but also improves the data reusability and expandability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of topographic survey demarcation, in particular to a topographic map and survey demarcation business data fusion and integrated area processing system and method. BACKGROUND

[0002] With the development of geographic information systems (GIS) and survey demarcation technology, the demand for accurate topographic data and survey demarcation data in the fields of land management, urban planning, project approval, etc. is increasing. The integration and efficient processing of topographic map and survey demarcation business data has become a key problem in this field. Although traditional surveying and mapping methods and geographic data processing techniques have been widely used, there are still certain technical challenges in data fusion, area calculation, etc. In order to improve the efficiency, accuracy and reusability of data processing, innovative technical solutions are urgently needed.

[0003] Currently, topographic map data and survey demarcation data are collected by different teams and stored in separate databases. Topographic map data is mainly used to describe topography and spatial distribution, using traditional surveying instruments such as total station and level. Survey demarcation business data focuses on the record of land ownership, boundary points and land use status, usually obtained through GPS and remote sensing image technology. Although both types of data are core data in the field of geographic information, due to differences in collection methods and storage formats, they cannot be directly connected and efficiently integrated in actual applications. In the existing technology, manual data integration is usually used to associate the two types of data through spatial matching. This process is not only tedious but also prone to errors, especially when dealing with large-scale data or complex terrain, the difficulty and error rate of data integration are higher.

[0004] Therefore, in the fusion of topographic map and survey demarcation business data and the process of topographic map and survey demarcation business data fusion and integrated area processing, the traditional data integration method is complex, with more manual intervention and prone to errors, lacking intelligent and automated solutions, making it difficult to guarantee data accuracy and consistency. The existing area calculation method also generally has the problems of insufficient calculation accuracy and inflexible operation, especially when dealing with complex shape polygons or conducting multi-level, multi-angle statistical analysis, the existing software functions are single and inefficient. Therefore, in the fields of land planning and resource management, how to improve data fusion efficiency, ensure data accuracy, and optimize area calculation and adjustment process, has become a problem to be solved. SUMMARY

[0005] The application provides a topographic map and survey demarcation business data fusion and integrated area processing system and method, aiming to solve the problems of complex data integration mode, multiple manual intervention and easy error in the prior art, lack of intelligent and automatic solution, and difficulty in guaranteeing data accuracy and consistency.

[0006] In a first aspect, a topographic map and survey demarcation business data fusion and integrated area processing system is provided, the system comprising:

[0007] A data acquisition module is configured to acquire topographic map data and survey demarcation business data, wherein the topographic map data is acquired by high-precision total station, aerial photography technology and level, and a digital elevation model and a digital orthophoto map are generated by using aerial image equipment combined with photogrammetry software; the survey demarcation business data is acquired by combining a GPS receiver, remote sensing image interpretation technology and field investigation to obtain boundary point coordinates, land use status and land ownership information;

[0008] A data preprocessing module is configured to convert the acquired data in different formats and projection coordinate systems into a unified data format and a target coordinate system supported by a CASS platform through a format conversion tool, a secondary development interface and a coordinate conversion function, and perform precision correction and quality inspection;

[0009] A data association module is configured to associate the topographic map data and the survey demarcation business data in space and attributes based on spatial relationships, attribute information and geographical features by using an automatic algorithm to ensure consistency and accuracy of the data, and store the associated data in a unified library system;

[0010] A data storage and management module is configured to store and manage geographic spatial data by using a relational database management system combined with a PostGIS extension module to support efficient spatial indexing, querying and data retrieval functions;

[0011] An area calculation and adjustment module is configured to provide multiple area calculation methods, including area summation, area difference calculation and area proportion calculation, and support adjustment modes such as weighted average method and least squares method, and provide real-time progress feedback, error analysis and calculation precision control functions according to the calculation results.

[0012] In the above scheme, the data acquisition module is configured to acquire high-precision total station, level and aerial image equipment for acquiring topographic map data, and acquire three-dimensional coordinate information through ground control points and aerial photography technology; and the GPS receiver and remote sensing image interpretation technology are used to acquire survey demarcation business data, and land ownership and boundary point coordinates are accurately acquired by combining field investigation.

[0013] In the above scheme, the data preprocessing module comprises:

[0014] A format conversion sub-module is configured to convert data formats derived from different surveying and mapping software into a format supported by the CASS platform through a program calling geographic information processing library;

[0015] A coordinate projection unification sub-module is configured to convert data in different projection coordinate systems into a unified target coordinate system according to known conversion parameters by using a coordinate conversion function of the CASS platform, and perform precision checking.

[0016] In the above scheme, optionally, the data association module adopts an automatic data association algorithm based on a geographic information system, combines geographic features and attribute relationships, and automatically processes by a programming language in combination with a geographic information library to ensure accurate spatial and attribute matching of topographic map data and surveying and delimiting data.

[0017] In the above scheme, optionally, the data storage and management module adopts a relational database management system in combination with a PostGIS spatial extension module, designs a multi-table data storage structure including a topographic map feature table, a surveying and delimiting feature table and an associated table, and accelerates geographic data query through spatial indexing to support complex query and analysis based on spatial relationships.

[0018] In the above scheme, optionally, the area calculation and adjustment module includes:

[0019] An area calculation module supports area summation, difference calculation and proportion calculation of selected polygons, and can select different calculation modes according to user needs;

[0020] An adjustment calculation module supports multiple adjustment modes, specifically including weighted average method and least square method, sets adjustment precision according to project needs, and dynamically adjusts error correction strategy in the calculation process.

[0021] In the above scheme, optionally, the area calculation and adjustment module includes:

[0022] A precision setting sub-module is configured to set precision requirements for different regions by a user and dynamically adjust precision through a calculation mode;

[0023] A real-time feedback module displays calculation progress in real time through a progress bar, provides estimated remaining time, and is used for a user to timely understand calculation status.

[0024] In the above scheme, optionally, the data storage and management module includes a regular backup mechanism, adopts a combination of full backup and incremental backup to guarantee safety of system data, and regularly performs database performance optimization including index reconstruction and cleaning of expired data to ensure efficient operation of the system.

[0025] In the above scheme, optionally, the system comprises a user interaction module, which provides a user-friendly operation interface through a graphical user interface, for displaying data processing progress, calculation results and error analysis report, for the user to view real-time feedback on the interface and directly adjust the calculation parameters and precision settings.

[0026] In a second aspect, a method for integrating topographic map and survey demarcation business data and processing area, comprising the following steps:

[0027] Collecting topographic map data and survey demarcation business data;

[0028] Converting and projecting the collected data of different formats and coordinate systems to the same format and coordinate system;

[0029] Based on the set data association rules, automatically associating the topographic map data and the survey demarcation data in space and attributes;

[0030] Storing the associated data in a unified database and obtaining the required data through spatial query;

[0031] Calculating and adjusting the selected area, providing real-time calculation progress and error feedback;

[0032] Generating area calculation results and error analysis report for user to view and decision.

[0033] Compared with the prior art, the present application has at least the following beneficial effects:

[0034] The present application is based on further analysis and research of the problems in the prior art, and realizes that the prior art data integration method is complex, manual intervention is multiple and prone to errors, lacks intelligent and automated solutions, and the data accuracy and consistency are difficult to guarantee. Through the modular design of data acquisition, preprocessing, correlation, storage management and area calculation adjustment, the efficiency and accuracy of data processing are significantly improved. Traditional topographic map and survey boundary data processing often has a complex and error-prone data integration process due to scattered data acquisition methods, inconsistent formats and manual integration, which affects the consistency and accuracy of the data. Through the technical scheme of the present application, the topographic map data and survey boundary data can be automatically converted, the coordinates are projected and unified, and the data correlation is accurate, which eliminates the errors caused by manual operation, and realizes efficient integration and sharing of data, ensuring high consistency and high precision of data. In addition, the area calculation and adjustment module provides flexible calculation mode and precision setting options, solving the problem of complex shape plot calculation and insufficient precision in traditional methods. Especially with the support of multiple adjustment modes, the accuracy and efficiency of area calculation are greatly improved. Through the real-time feedback mechanism, users can timely understand the calculation progress and errors, avoiding repeated labor and inefficient operation. The implementation of the system not only optimizes the data processing process, but also improves the data reusability and scalability, significantly improves the work efficiency in land planning, project approval and other business scenarios, provides reliable support for decision-making, and solves many problems in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A module architecture block diagram of a topographic map and survey boundary business data fusion and integrated area processing system is provided for an embodiment of the present application.

[0036] Figure 2 A data fusion process diagram of a topographic map and survey boundary business data fusion and integrated area processing method is provided for an embodiment of the present application.

[0037] Figure 3 A processing flowchart of a topographic map and survey boundary business data fusion and integrated area processing method is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present application more clear and understandable, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0039] In one embodiment, a topographic map and survey boundary business data fusion and integrated area processing system is provided, which comprises:

[0040] The data collection module is used for collecting topographic map data and surveying and demarcating service data, wherein the topographic map data is collected by a high-precision total station, aerial photography technology and a level, and a digital elevation model and a digital orthographic image map are generated by using an aerial image device in combination with photogrammetry software; the surveying and demarcating service data is obtained by combining a GPS receiver, remote sensing image interpretation technology and field investigation to obtain coordinates of boundary points, land use status and land ownership information;

[0041] The data preprocessing module is used for converting the collected data in different formats and projection coordinate systems into a unified data format and a target coordinate system supported by the CASS platform by using a format conversion tool, a secondary development interface and a coordinate conversion function, and performing precision correction and quality inspection;

[0042] The data association module is used for associating the topographic map data and the surveying and demarcating service data in space and attributes based on spatial relationships, attribute information and geographical features by using an automatic algorithm to ensure consistency and accuracy of the data, and the associated data is stored in a unified gallery system.

[0043] The data storage and management module is used for storing and managing geographic spatial data by using a relational database management system in combination with a PostGIS extension module to support efficient spatial indexing, query and data retrieval functions.

[0044] The area calculation and adjustment module provides multiple area calculation methods, including area summation, area difference calculation and area proportion calculation, and supports adjustment modes such as weighted average method and least square method, and provides real-time progress feedback, error analysis and calculation precision control functions according to the calculation results.

[0045] In the embodiment, the data collection module is used for collecting a high-precision total station, a level and an aerial image device of the topographic map data, and obtaining three-dimensional coordinate information by using ground control points and aerial photography technology; and is used for collecting a GPS receiver and remote sensing image interpretation technology of the surveying and demarcating service data, and accurately obtaining land ownership and boundary point coordinates in combination with field investigation.

[0046] In the embodiment, the data preprocessing module comprises:

[0047] The format conversion submodule is used for converting data formats exported by different surveying and mapping software into formats supported by the CASS platform by writing programs to call geographic information processing libraries;

[0048] The coordinate projection unification submodule converts data in different projection coordinate systems into a unified target coordinate system by using a coordinate conversion function of the CASS platform according to known conversion parameters, and performs precision inspection.

[0049] In the embodiment, the data association module adopts an automatic data association algorithm based on a geographic information system, combines geographic features and attribute relationships, and automatically processes by a programming language in combination with a geographic information library to ensure accurate spatial and attribute matching of topographic map data and surveying and delimiting data.

[0050] In the embodiment, the data storage and management module adopts a relational database management system in combination with a PostGIS spatial extension module, designs a multi-table data storage structure including a topographic map element table, a surveying and delimiting element table, and an associated table, and accelerates geographic data query through spatial indexing to support complex query and analysis based on spatial relationships.

[0051] In the embodiment, the area calculation and adjustment module includes:

[0052] The area calculation module supports area summation, difference calculation, and proportion calculation of selected polygons, and can select different calculation modes according to user needs;

[0053] The adjustment calculation module supports multiple adjustment modes, specifically including weighted average method and least square method, sets adjustment accuracy according to project needs, and dynamically adjusts error correction strategy in the calculation process.

[0054] In the embodiment, the area calculation and adjustment module includes:

[0055] The precision setting submodule is used for a user to set precision requirements for different regions and dynamically adjust precision through a calculation mode;

[0056] The real-time feedback module displays calculation progress in real time through a progress bar, provides predicted remaining time, and is used for a user to understand calculation status in time.

[0057] In the embodiment, the data storage and management module includes a periodic backup mechanism, adopts a combination of full backup and incremental backup to guarantee system data security, and periodically performs database performance optimization including index reconstruction and expired data cleaning to ensure efficient system operation.

[0058] In the embodiment, the system includes a user interaction module, provides a user-friendly operation interface through a graphical user interface, displays data processing progress, calculation results, and error analysis report, and is used for a user to view real-time feedback on the interface and directly adjust calculation parameters and precision settings.

[0059] The embodiment provides a topographic map and survey demarcation business data fusion and topographic map and survey demarcation business data fusion and integrated area processing system based on a CASS platform. The system realizes integrated and automatic processing from data acquisition, preprocessing, correlation, storage to area calculation and adjustment through modular design. The specific implementation mode comprises the following steps:

[0060] The data acquisition module completes the acquisition of topographic map data by combining high-precision surveying and mapping tools (such as total station, level, etc.) with aerial photogrammetry technology. The total station and the level are used to obtain accurate coordinates and elevation data of the terrain data, so as to ensure the spatial accuracy of the topographic map and the accuracy of the elevation information. In addition, a digital elevation model (DEM) and a digital orthographic image map (DOM) are generated through aerial image equipment and photogrammetry software, which greatly improves the acquisition efficiency of large-scale topographic maps.

[0061] The acquisition of survey demarcation business data is realized by combining GPS receivers, remote sensing image interpretation technology and field investigation to obtain boundary points, land use status, land ownership and other data. Through the high-precision positioning technology of the GPS equipment, the coordinates of the boundary points and the accuracy of the land boundaries are ensured.

[0062] In order to ensure that data of different sources and different formats can be seamlessly connected on the CASS platform, the data preprocessing module first converts the format of the collected topographic map data and survey demarcation business data. Through the developed data conversion tool or secondary development interface, the system can convert the collected data into the standard format (such as DWG format) supported by the CASS platform. After format conversion, the system will further unify the projection coordinate system of the data, adopt the coordinate conversion function of the CASS platform, and use the known conversion parameters to convert the different projection coordinate system data into the target coordinate system (such as CGCS2000). In this process, the system will also perform precision correction to ensure the spatial accuracy and coordinate consistency of the converted data.

[0063] The data correlation module is one of the key technologies of the system. According to the spatial and attribute relationship between the topographic map data and the survey demarcation business data, the system realizes automatic correlation through programming technology (such as Python language combined with Shapely library). The system automatically matches the nearest ground feature point on the topographic map according to the coordinate information of the boundary point, and establishes the correlation between the two. In addition, the system will also intelligently match the ground feature characteristics (such as land use type, land type, etc.) with the ground feature classification in the topographic map to ensure the efficient fusion and consistency of the topographic map and the survey demarcation data.

[0064] All collected and associated data will be stored in a relational database management system (such as PostgreSQL) and managed with the PostGIS extension module for spatial data. The PostGIS extension provides rich spatial query functions for the database, supporting spatial indexing and efficient data retrieval. The system's storage structure design uses a multi-table structure, including topographic feature tables, survey and boundary feature tables, and association tables, to ensure data integrity and consistency. The storage structure design supports efficient querying and analysis of large-scale data.

[0065] After data association and storage are completed, the system can perform area calculation and precision adjustment. The area calculation module supports multiple calculation methods, including area summation, difference calculation, and proportional calculation, to meet different business needs. Users can select specific areas or land classes for area statistics as needed. The adjustment calculation module provides multiple adjustment modes, such as weighted average and least squares. Users can select the appropriate adjustment method based on the project's precision requirements. The module also provides real-time feedback, displaying the calculation progress in real time through a progress bar and providing an estimated remaining time. In addition, after the calculation is complete, the system will automatically generate an error analysis report to help users identify and solve data error sources.

[0066] This system greatly improves the accuracy and efficiency of data collection by combining modern surveying and mapping techniques (such as total station, level, aerial photogrammetry) with GPS and remote sensing image interpretation technology. Especially in the process of obtaining large-scale topographic map and survey and boundary business data, traditional methods often rely on manual operation, which is prone to errors. The use of aerial images and high-precision equipment not only reduces the need for manual intervention, but also improves the overall accuracy of the data. Traditional topographic map data and survey and boundary business data often have errors due to inconsistent formats and coordinate system mismatches during manual integration. Through the data preprocessing module and data association module of this invention, the system realizes format conversion, projection unification, and automatic association, ensuring efficient integration of data from different sources. The system's automated data association and verification functions greatly reduce errors introduced by manual operations, thereby improving the accuracy and consistency of the integrated data. Traditional area calculation methods often have poor results for complex graphics and require a lot of manual operation. Through the area calculation and adjustment module of this system, users can quickly and accurately calculate the area of a graphic patch and set the precision according to their needs. The automated implementation of adjustment algorithms, especially the introduction of least squares and weighted average methods, makes area calculation in complex regions more accurate. At the same time, real-time progress feedback and error analysis report generation allow users to identify problems and adjust calculation parameters in a timely manner, avoiding the repetitive labor and low efficiency of traditional methods.

[0067] The embodiment breaks the limitations of different data sources and storage formats through a unified gallery system, ensures that data can be reused in multiple business scenarios. The data collected once can be reused in different land planning, project approval and resource management, significantly improving work efficiency and resource utilization. At the same time, the open design of the system makes it easy for new data sources and measurement devices to access the platform, enhancing the scalability and flexibility of the system.

[0068] Through the system of the application, a plurality of technical problems existing in the processing of traditional topographic maps and surveying and demarcation data are solved. Especially in the aspect of data fusion, the application realizes the optimization of multiple steps such as data format unification, coordinate system conversion and automatic data association, greatly reducing the error in the process of manual intervention and format conversion. In the aspects of area calculation and adjustment, the system improves the calculation accuracy and work efficiency through flexible algorithm selection and real-time feedback mechanism, and solves the problems of insufficient calculation accuracy and large workload in the prior art.

[0069] In one embodiment, a topographic map and surveying and demarcation business data fusion and topographic map and surveying and demarcation business data fusion and integrated area processing system based on a CASS platform is provided. In the field of geographic information systems (GIS) and surveying and mapping, the traditional topographic map and surveying and demarcation business processing method is as follows:

[0070] Data collection and management: topographic map data and surveying and demarcation business data are collected by different teams or personnel based on different purposes. Topographic map data collection focuses on comprehensively depicting the spatial distribution and attribute information of terrain and features, and uses surveying and mapping instruments such as total stations and levels to operate in accordance with topographic surveying and mapping specifications. Surveying and demarcation business data collection focuses on information such as land use range, boundary point and land use status, and is mainly obtained through field investigation and property data review.

[0071] In data management, topographic map data is generally stored in a dedicated topographic database and is organized and managed in the form of layers and feature classes, emphasizing the geometric expression of spatial data and the overall presentation of terrain and landscape. Surveying and demarcation business data is stored in the form of documents and tables in a business database, mainly recording boundary information and land property attributes.

[0072] Data integration and application: when topographic maps and surveying and demarcation business data need to be used comprehensively, manual integration is usually adopted. The staff first extracts relevant data from their respective databases, and then matches and associates them according to spatial position and attribute characteristics. For example, when drawing a surveying and demarcation map, boundary point data needs to be superimposed on the topographic map. Due to the inconsistency of data formats and coordinate systems, complex format conversion and coordinate correction are often required.

[0073] In data applications, topographic map data and surveying and demarcation business data are mainly used in land planning and project approval respectively. However, due to the lack of effective fusion mechanism, the two types of data cannot complement and support each other.

[0074] Area calculation function: In existing surveying and demarcation business, area calculation mainly relies on professional surveying and mapping software or general GIS software. These software provide basic area calculation tools, such as area calculation function for simple geometric figures (polygon, rectangle, etc.). When calculating the area of a figure, the software calculates according to the preset algorithm (such as the polygon area calculation formula based on coordinates) based on the manually drawn or selected figure boundary.

[0075] Area statistics and adjustment: The area statistics function is relatively simple, and is mainly the simple summation or classification summary of the area of the selected figure. In terms of area adjustment, the existing methods mainly use traditional manual adjustment or simple computer-aided adjustment method. Manual adjustment relies on manual adjustment of the calculation results according to experience and certain adjustment principles. Although computer-aided adjustment uses software calculation, it often lacks intelligence and automation, and requires manual intervention and parameter adjustment.

[0076] The existing technology has the following deficiencies in the fusion of topographic map data and surveying and demarcation business data and area processing:

[0077] Data collection and management: The lack of unified planning and coordination of two sets of data collection leads to a lot of repetitive work. For example, for the same area, both topographic map and surveying and demarcation business collect relevant feature information.

[0078] The separated storage mode makes the two types of data physically independent, difficult to directly associate and share, and increases the difficulty of data integration.

[0079] Data integration and application: Manual integration method is time-consuming and laborious, and in the processing of large-scale data or complex terrain area, errors are easy to occur, which makes it difficult to ensure the accuracy and consistency of the data.

[0080] Due to the lack of effective fusion mechanism, topographic map data and surveying and demarcation business data cannot complement and support each other, which limits their deep application in land planning, project approval and other businesses, and affects the scientificity and efficiency of planning decision-making.

[0081] Area calculation function: For complex shape figures or combined figures, the calculation process is tedious and manual operation is prone to errors, resulting in inaccurate results. The software has limited support for data format and projection coordinate system, and when the data format is incompatible or the projection coordinate system is inconsistent, the conversion processing increases the operation complexity and error probability, and may introduce precision loss.

[0082] Area statistics and adjustment: The area statistics function is difficult to meet the complex business needs and cannot flexibly perform multi-level and multi-angle statistical analysis according to custom classification standards.

[0083] In the area adjustment process, manual adjustment is inefficient and subjective, and computer-aided adjustment lacks intelligence and automation, requiring manual intervention multiple times. At the same time, the entire area calculation, statistics, and adjustment process lacks real-time feedback mechanisms, and if the operation results do not meet expectations, it needs to be re-operated, wasting time and effort.

[0084] In summary, the existing technology has many shortcomings in the fusion of topographic map and surveying and delimitation business data and area processing, and it is difficult to meet the requirements of efficiency, accuracy, and comprehensiveness of data processing in the fields of current surveying and land management.

[0085] The present embodiment can solve the following technical problems: Eliminate repetitive work and reduce costs: In view of the large amount of repetitive work in the process of collecting topographic map data and surveying and delimitation business data in the prior art, a unified collection and management system is constructed by deeply fusing the data of the two, realizing one-time collection and multiple reuse, thereby reducing the cost of manpower, material resources and time.

[0086] Improve data accuracy and consistency: Solve the problem that traditional manual data integration method is prone to errors, resulting in difficulty in ensuring data accuracy and consistency. By establishing scientific data correlation rules and automatic integration process, the error accumulation in data conversion link is reduced, ensuring the high precision and consistency of data in the fusion process, and providing a reliable data basis for subsequent business operations.

[0087] Enhance data correlation and reusability: Break the situation that topographic map data and surveying and delimitation business data are stored independently and cannot be directly associated and shared. By constructing a unified gallery system, the effective association and integration of the two types of data are realized, the data reusability is improved, and the data can be mutually supplemented and supported in various business scenarios such as land planning and project approval, fully realizing the value of data.

[0088] Improve the diversity and flexibility of area calculation: Overcome the problem that the existing area calculation function is complicated for complex graphics processing, and the support for data format and projection coordinate system is limited. Provide diversified area calculation methods to meet the needs of different shape polygons and complex business scenarios, while fully supporting multiple data formats and projection coordinate systems, reducing the complexity of data conversion, and improving calculation efficiency and accuracy.

[0089] Meet the needs of complex statistical analysis: Solve the problem that the existing area statistics function is single and cannot flexibly perform multi-level and multi-angle statistical analysis according to custom classification standards. Realize flexible classification statistics of polygon area according to different business needs, generate detailed statistical reports, and provide more comprehensive data support for land resource management and decision-making.

[0090] Optimize the area adjustment process: improve the existing area adjustment method, which is inefficient, subjective, and lacks intelligence and automation. Provide multiple flexible adjustment calculation modes and precision setting options, realize the automatic adjustment calculation process, and provide real-time feedback on the calculation progress, improve the efficiency and accuracy of the adjustment calculation, and reduce manual intervention and operation errors.

[0091] Establish a real-time feedback mechanism: In view of the lack of real-time feedback mechanism in the area calculation, statistics and adjustment process, a real-time feedback system is built to let users know the calculation progress and results in time during the operation process. If there is a problem, it can be adjusted in time to avoid repeated work and improve the efficiency of the entire area processing business process.

[0092] This embodiment is divided into two parts, data fusion and integrated area, and the specific implementation is as follows:

[0093] Data fusion implementation: Data collection: topographic map data collection: use high-precision total station, adopt polar coordinate method, intersection method and other measurement means to measure terrain and objects in detail, obtain their three-dimensional coordinate information. At the same time, use level gauge to measure elevation data to ensure accurate collection of terrain fluctuation information. For large area, combined with aerial photogrammetry technology, through unmanned aerial vehicle or manned aircraft carrying high-resolution camera to obtain aerial image, use photogrammetry software to process, generate digital elevation model (DEM) and digital orthophoto map (DOM), provide rich data basis for topographic map drawing.

[0094] Survey and boundary business data collection: through field investigation, use GPS receiver to accurately determine the coordinates of boundary points, and clearly define the land use range. At the same time, collect land ownership data such as land certificate, contract, etc., and record the land use status information in detail, including land use, land type, etc. With the help of remote sensing image interpretation technology, the land use type is preliminarily interpreted, and the results are verified with the field investigation results to ensure the accuracy and integrity of the data.

[0095] Data preprocessing: format conversion: on the CASS platform, use its data conversion tool or secondary development interface to convert the collected data of different formats into the format supported by the CASS platform. For example, the Shapefile format data exported from other surveying and mapping software is converted into the DWG format commonly used by the CASS platform by writing Python scripts to call relevant geographic information processing libraries (such as GeoPandas), to ensure that the data can be processed on the CASS platform.

[0096] Projection unification: According to project requirements, select appropriate projection coordinate systems, such as CGCS2000 projection coordinate system. Use the coordinate conversion function of CASS platform, combined with known coordinate conversion parameters (such as seven parameters, three parameters, etc.), unify the data of different projection coordinate systems into the target coordinate system. In the conversion process, strictly check the quality of the data to ensure the accuracy of the coordinate conversion and avoid the position deviation caused by inconsistent projection.

[0097] Data association and integration: Develop association rules: In-depth analysis of the attribute characteristics and spatial relationship of topographic map data and surveying and delimitation business data, and develop detailed data association rules. For example, for cadastral points, match them according to their coordinate information and the distance and direction relationship with the nearest feature point on the topographic map; for land use types, associate them according to the characteristics of the features (such as vegetation coverage, building type, etc.) and the feature classification in the topographic map.

[0098] Write association program: Use object-oriented programming language (such as Python) combined with geographic information processing library (such as Shapely) to write data association program. The program traverses the elements of topographic map data and surveying and delimitation business data, and matches and associates them according to the set association rules. For example, for each cadastral point, search for the nearest feature point in the topographic map data that meets certain conditions (such as distance threshold, direction angle range, etc.), and establish the association relationship between them.

[0099] Data integration into database: Use the data hanging function of CASS platform to integrate the associated data into a unified map database system. In the integration process, check the integrity and consistency of the data to ensure that each element is correctly associated and there is no duplication or omission. Import the integrated data into the database of CASS platform, establish reasonable data table structure, including topographic map element table, surveying and delimitation element table and association relationship table, etc., in order to facilitate subsequent data management and query.

[0100] Data storage and management: Select database management system: Choose a powerful relational database management system, such as PostgreSQL combined with PostGIS extension, to store and manage the data in the unified map database system. PostgreSQL provides reliable data storage and transaction processing functions, and PostGIS provides rich support for geographic spatial data, including spatial index, spatial query, etc.

[0101] Data storage structure design: According to the type and relationship of data, design reasonable data table structure. For example, the topographic feature table stores the geometric information and attribute information of terrain and features, the survey boundary feature table stores the information of boundary points and land use status, and the association table records the association between topographic data and survey boundary business data. At the same time, create index for the key field of each table to improve the efficiency of data query and retrieval.

[0102] Data backup and maintenance: Establish regular data backup mechanism, adopt full backup and incremental backup combination. Full backup is carried out regularly (such as once a week), and the whole database is completely backed up; incremental backup records the changed part of the database between two full backups (such as once a day). At the same time, regularly optimize the performance of the database, such as cleaning up expired data, rebuilding index, etc., to ensure the efficient operation of the database.

[0103] Topographic map and survey boundary business data fusion and integrated area processing implementation: clipping statistical analysis: data selection: users can select the data to be processed on the operation interface of CASS platform through various ways. You can draw the area range directly on the map, and the system can automatically identify the polygons within the range; you can also input the polygon number to accurately select a specific polygon; you can also filter according to the attribute conditions such as land use type and ownership to quickly locate the data that meets the requirements.

[0104] Various calculations: the system provides rich area calculation methods. For the selected polygons, you can perform area summation calculation to get the total area of the selected region; you can also perform area difference calculation to compare the area difference between different regions or different land types; you can also support area proportion calculation to understand the proportion of a certain land type area in the total area.

[0105] Projection and format processing: before area calculation, the system automatically identifies the projection coordinate system and data format of the data. If the data format is incompatible, the system can automatically convert it to ensure that common Shapefile, DXF, DWG, etc. can be processed. For the case of inconsistent projection coordinate system, the system will convert the data to the appropriate coordinate system according to the preset projection conversion parameters to ensure the accuracy of area calculation.

[0106] Classification statistics and report generation: according to the classification standard set by the user, such as land use status classification and ownership classification, the system classifies and counts the area of the polygons. For example, according to the land use status classification standard, the area of each land type such as agricultural land, construction land and unused land is counted, and detailed classification area statistics report is generated. The report not only contains area values, but also provides analysis information such as proportion and change trend, which is displayed to the user in the form of charts and tables, making it easy for users to analyze data and make decisions.

[0107] Marking assistance function: Users can mark specific patches or areas on the map, add text annotations, draw special symbols, etc. This marking information is closely related to the patch data and accompanies the patch display throughout the area calculation, statistical analysis, and results presentation processes, helping users better identify and analyze the data. For example, users can mark areas of key interest, and the system will highlight the relevant data for these areas when generating reports.

[0108] Area Calculation and Adjustment: Mode and Precision Settings: In the area calculation and adjustment interface, users can select the appropriate calculation mode and precision settings according to the actual project requirements. Calculation modes offer multiple options, such as weighted average method and least squares method. For example, in projects with high precision requirements and large data volumes, users can choose the least squares method for adjustment calculations. This method finds the best function match for the data by minimizing the sum of squared errors, effectively improving the accuracy of area calculations. In projects with higher requirements for calculation speed and relatively less stringent precision requirements, the weighted average method can be selected, assigning appropriate weights based on the importance or reliability of different map features, thereby quickly obtaining a more reasonable adjustment result. Users can also set detailed calculation precision settings according to actual needs, such as setting the number of decimal places to retain.

[0109] Calculation and Progress Feedback: The system uses the results of the clipping statistical analysis as input data and, according to the user-defined calculation mode and accuracy requirements, calls professional adjustment algorithms to perform area calculation and adjustment processing. During the calculation process, the system monitors the calculation progress in real time through a background thread and provides progress information to the user interface. For example, by displaying the completed calculation percentage on a progress bar, users can understand the calculation status in real time. Simultaneously, the system can also provide information such as the estimated remaining time to help users manage their time effectively.

[0110] Results Display and Error Analysis: After the calculation is completed, the system automatically displays detailed calculation results on the interface, including the adjusted area value and an error analysis report. The error analysis report details the source and magnitude of the error, as well as its impact on the final result, helping users assess the reliability of the calculation results. For example, the report will indicate whether the error is caused by data acquisition error, projection transformation error, or limitations of the calculation method itself, and provide corresponding improvement suggestions.

[0111] Cooperative mechanism: Function connection: Seamless cooperation between the clipping statistical analysis function and the area calculation and adjustment function. When the user completes the preliminary calculation and statistics of the area of the graphic patch in the clipping statistical analysis function, the system automatically transfers these results as input data to the area calculation and adjustment function. Based on the received data, the area calculation and adjustment function further performs adjustment processing according to the user's set calculation mode and precision requirements, reducing errors that may occur during manual intervention and data conversion.

[0112] Data sharing and interaction: The two functional modules share data in the unified map library system and interact through internal data interfaces. During the cooperative operation process, if the user finds problems in the data in the area calculation and adjustment function, they can directly return to the clipping statistical analysis function to adjust the data and then perform the calculation again, without the need to reselect and import the data, improving work efficiency. At the same time, the system records the user's operation process and parameter settings between the two functional modules, facilitating traceability and review.

[0113] The embodiment based on the topographic map and survey demarcation business data fusion and integration and the topographic map and survey demarcation business data fusion and integration and integrated area processing system of the CASS platform has many beneficial technical effects:

[0114] In terms of data fusion, improve data reusability: Build a unified map library system to realize multiple reuse of once collection, greatly reduce repeated surveying and mapping work, and save manpower, material resources and time cost, such as directly calling collected data in different projects to improve work efficiency.

[0115] Enhance data accuracy and consistency: Through the automatic data association and integration process, reduce errors caused by manual operation, reduce error accumulation in the data conversion link, and ensure high precision and consistency of data in the entire business process, providing reliable data support for decision-making.

[0116] Optimize data management and analysis: The unified map library system facilitates centralized storage, management and query of data, making it easy for staff to quickly obtain the required data. At the same time, it is conducive to comprehensive analysis of data, mining of potential data value, and auxiliary land resource dynamic monitoring and scientific decision-making.

[0117] In terms of area processing, the function is diverse and flexible: Provide a variety of area calculation methods, multiple data selection forms, support multiple projection coordinate systems and data formats, meet the diversified area processing needs in different business scenarios, and can easily handle complex land planning and simple land class statistics.

[0118] Improve calculation accuracy and efficiency: multiple adjustment calculation modes and precision setting options, combined with real-time progress feedback, ensure high precision of area calculation and improve calculation efficiency. At the same time, reduce manual intervention, reduce error, and ensure the accuracy and reliability of the area processing results.

[0119] Integrate efficient operation: statistical analysis and area calculation adjustment functions are closely coordinated to realize integrated operation from data processing to area calculation and adjustment, reduce intermediate links, avoid manual data conversion errors, and significantly improve the overall efficiency and data quality of the business process.

[0120] In the process of implementing the topographic map and survey demarcation business data fusion and integration area processing based on the CASS platform, the following key technical points are provided:

[0121] Unified gallery system construction technology: multi-source data preprocessing technology: to solve the problem of diverse sources, inconsistent formats and projection coordinate systems of topographic map data and survey demarcation business data, a set of efficient format conversion and projection unification technology on the CASS platform is invented. This technology uses platform tools and secondary development interfaces to quickly and accurately convert various non-standard format data into CASS compatible format, and realizes the unification of projection coordinate systems according to project requirements through accurate coordinate conversion parameters, ensuring data consistency and compatibility, and laying a solid foundation for subsequent fusion.

[0122] Precise data association technology: by analyzing the characteristics of the two types of data, developing scientific data association rules, and using programming technology to realize automatic association, the unique association algorithm can accurately match and associate topographic map and survey demarcation business data according to the spatial relationship between boundary points and topographic map features, and the corresponding relationship between land use types and feature characteristics, greatly improving the accuracy and efficiency of data fusion.

[0123] Through detailed classification storage and accurate labeling of data in the unified gallery system, an efficient data reuse mechanism is constructed. This mechanism breaks through the limitations of traditional data use, realizes the reuse of data collected once in different business scenarios, significantly saves data collection cost, and improves work efficiency, which is one of the core innovations of the invention in data utilization.

[0124] Diversified calculation and selection technology: a variety of area calculation methods are integrated, including area summation, difference calculation, and proportion calculation, while supporting flexible data selection forms such as plot number, area range, and land use type. This technology meets the diverse needs of area calculation and data filtering in different business scenarios, providing great convenience for users.

[0125] Multi-format and projection support technology: It has comprehensive support capabilities for multiple projection coordinate systems and common data formats such as Shapefile, DXF, DWG, etc. Through automatic recognition and conversion technology, the system can seamlessly process data from different sources without the need for users to manually perform complex data preprocessing, effectively improving the versatility and efficiency of area processing.

[0126] Intelligent classification statistics and labeling technology: It realizes intelligent area classification statistics according to user-defined classification standards and automatically generates detailed reports. At the same time, it provides intuitive labeling assistance, users can mark specific polygons or areas, and the marking information is closely related to the polygon data, facilitating data identification and analysis, enhancing the pertinence and convenience of data analysis.

[0127] Flexible mode and precision control technology: It provides multiple flexible area calculation and adjustment modes such as weighted average method, least squares method, etc., and allows users to accurately set the calculation precision according to the actual project requirements. This technology can meet the differentiated requirements of different projects for area calculation precision and efficiency, improving the accuracy and reliability of area processing results.

[0128] Real-time feedback and intelligent processing technology: During area calculation and adjustment, real-time feedback technology is used to monitor the calculation progress in real time through background threads, and to feedback to users in an intuitive way such as progress bar. After calculation is completed, a detailed error analysis report is automatically generated to help users fully understand the reliability of the calculation results, realizing intelligent and efficient area processing.

[0129] This embodiment designs a unique collaborative working mechanism to realize seamless connection between the clipping statistical analysis function and the area calculation and adjustment function. Through the internal data interface and automatic data transmission process of the system, the two function modules can work closely, reducing manual intervention and data conversion links, reducing errors, and significantly improving the overall efficiency and data quality of the integration of topographic map and surveying and delineation business data and integrated area processing.

[0130] The system architecture diagram is shown in Figure 3 : It shows the architecture composition of the data fusion module based on the CASS platform and the integration of topographic map and surveying and delineation business data and integrated area processing module. It includes data acquisition equipment and software interface, data processing core of CASS platform, database storage structure, and interface for user interaction, etc.

[0131] In one embodiment, as shown in Figure 2 and Figure 3 , a topographic map and surveying and delineation business data integration and integrated area processing method is provided, including the following steps:

[0132] Collect topographic map data and surveying and delineation business data;

[0133] Format conversion and projection coordinate system are performed on the collected data in different formats and coordinate systems;

[0134] Based on the set data association rules, the topographic map data and survey boundary data are automatically associated in space and attributes;

[0135] The associated data are stored in a unified database, and the required data are obtained through spatial query;

[0136] Area calculation and adjustment processing are performed on the selected polygons, and real-time calculation progress and error feedback are provided;

[0137] Area calculation results and error analysis reports are generated for users to view and make decisions.

[0138] The data fusion flowchart is shown in Figure 2 The entire process from data collection, format conversion, projection unification, data association according to association rules, to the formation of a unified map library system is shown in detail.

[0139] The topographic map and survey boundary business data fusion and integrated area processing flowchart is shown in Figure 3 The entire process from user selection of data on the CASS platform, to polygon area calculation and report generation by the cutting statistical analysis function, to adjustment processing by the area calculation and adjustment function according to the set mode and precision, and real-time progress feedback and result display is shown.

[0140] The present embodiment is based on the operation method of topographic map and survey boundary business data fusion and integrated area processing on the CASS platform. First, the user obtains topographic map data and survey boundary business data through the data acquisition module. After data acquisition, the system will perform format conversion on data in different formats through the data preprocessing module, and unify the coordinate system to ensure that the data can be effectively processed on the CASS platform. Next, the data association module automatically matches the topographic map data and survey boundary data in space and attributes according to the set association rules, ensuring efficient data fusion.

[0141] After data processing is completed, the user can perform area calculation and adjustment on the selected plot through the area calculation and adjustment module, and perform adjustment processing according to the project requirements. The system will provide real-time feedback on the calculation progress, and generate area calculation results and error analysis reports after the calculation is completed, for the user to view and further decision. The real-time feedback and flexible precision setting function of the system can ensure the efficiency and accuracy of the calculation. Through this method, the entire data processing process from acquisition to calculation, from data integration to result generation, realizes fully automated processing. Data format conversion and coordinate system unification eliminate the error problems caused by format incompatibility and different coordinate systems in traditional methods. Automatic data association further improves the efficiency and accuracy of data integration, avoiding errors caused by manual intervention. The area calculation and adjustment module provides an efficient and accurate calculation method, and the user can adjust the calculation parameters in real time through real-time feedback to ensure the accuracy and efficiency of the calculation results. This method solves the problems of complex processing of multiple data sources, manual operation, low calculation efficiency and other problems in the background technology, and improves the overall system efficiency and data processing capacity.

[0142] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

Claims

1. A system for fusing and integrating topographic map and survey demarcation business data and area processing, characterized by, The system comprises: a data acquisition module for acquiring topographic map data and surveying and demarcating service data, wherein the topographic map data is acquired by high-precision total station, aerial photography technology and level, and a digital elevation model and a digital orthographic image map are generated by using aerial image equipment combined with photogrammetry software; the surveying and demarcating service data is acquired by combining a GPS receiver, remote sensing image interpretation technology and field investigation to obtain coordinate of boundary point, land use status and land ownership information; a data preprocessing module for converting the acquired data in different formats and projection coordinate systems into a unified data format and a target coordinate system supported by a CASS platform through a format conversion tool, a secondary development interface and a coordinate conversion function, and performing precision correction and quality inspection; a data association module for associating the topographic map data and the surveying and demarcating service data in space and attributes based on spatial relationship, attribute information and geographical features by using an automatic algorithm to ensure consistency and accuracy of the data, and storing the associated data in a unified gallery system; a data storage and management module for storing and managing geographic spatial data by using a relational database management system combined with a PostGIS extension module to support efficient spatial indexing, query and data retrieval functions; an area calculation and adjustment module for providing multiple area calculation methods including area summation, area difference calculation and area proportion calculation, while supporting adjustment modes such as weighted average method and least square method, and providing real-time progress feedback, error analysis and calculation precision control functions according to the calculation results.

2. The system of claim 1, wherein, The data acquisition module is used for acquiring high-precision total station, level and aerial image equipment for acquiring topographic map data, and acquiring three-dimensional coordinate information through ground control points and aerial photography technology; and is used for acquiring GPS receiver and remote sensing image interpretation technology for acquiring surveying and demarcating service data, and accurately acquiring land ownership and coordinate of boundary point in combination with field investigation.

3. The system of claim 1, wherein, The data preprocessing module comprises: a format conversion submodule for converting data formats exported by different surveying and mapping software into formats supported by the CASS platform by writing programs to call geographic information processing libraries; a coordinate projection unification submodule for converting data in different projection coordinate systems into a unified target coordinate system by using coordinate conversion functions of the CASS platform according to known conversion parameters, and performing precision inspection.

4. The system of claim 1, wherein, The data association module adopts an automatic data association algorithm based on geographic information system, combines geographical features and attribute relationships, and automatically processes by using programming language combined with geographic information library to ensure accurate spatial and attribute matching of the topographic map data and the surveying and demarcating data.

5. The system of claim 1, wherein, The data storage and management module adopts a relational database management system combined with a PostGIS spatial extension module, designs a multi-table data storage structure including a topographic map element table, a surveying and demarcating element table and an associated table thereof, and accelerates geographic data query through spatial indexing to support complex query and analysis based on spatial relationship.

6. The system of claim 1, wherein, The area calculation and adjustment module comprises: an area calculation module for supporting area summation, difference calculation and proportion calculation of selected graph, and being capable of selecting different calculation modes according to user's needs; The adjustment calculation module supports multiple adjustment modes, specifically including weighted average method and least squares method, sets adjustment accuracy according to project requirements, and dynamically adjusts error correction strategy in the calculation process.

7. The system of claim 1, wherein, The area calculation and adjustment module includes: The precision setting submodule is used for users to set precision requirements for different regions and dynamically adjusts precision through the calculation mode; The real-time feedback module displays the calculation progress in real time through a progress bar, provides the estimated remaining time, and is used for users to understand the calculation state in time.

8. The system of claim 1, wherein, The data storage and management module includes a periodic backup mechanism, adopts a combination of full backup and incremental backup, guarantees the safety of system data, and periodically optimizes database performance, including index reconstruction and cleaning of expired data, to ensure efficient operation of the system.

9. The system of claim 1, wherein, The system includes a user interaction module, which provides a user-friendly operation interface through a graphical user interface, displays data processing progress, calculation results and error analysis report, and is used for users to view real-time feedback on the interface and directly adjust calculation parameters and precision settings.

10. A method for fusing and integrating topographic map and survey demarcation business data and area processing, characterized by, The method includes the following steps: Collect topographic map data and surveying and delimiting business data; Format conversion and projection coordinate system of the collected data in different formats and coordinate systems are unified; Based on the set data association rules, automatically associate the topographic map data and the surveying and delimiting data in space and attribute; Store the associated data in a unified database, and obtain the required data through spatial query; Area calculation and adjustment processing are performed on the selected plot, and real-time calculation progress and error feedback are provided; Generate area calculation results and error analysis report for users to view and make decisions.

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