National land change survey national level field verification whole process closed loop management method
Patent Information
- Application Number
- CN202610518121.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-20
- Publication Date
- 2026-08-18
AI Technical Summary
[0005]信息化支撑不足，智能化程度低：外业核查仍以纸质记录、离线拍照、人工录入为主，数据上传滞后、易出错、效率低
获取国家级技术单位对省级上报的国土变更调查成果进行内业全面复核的复核结果；通过图像识别地类、边界、属性信息存疑的图斑，以及识别耕地保护、建设用地图斑，确定国家级外业核查对象；外业核查终端根据接收的国家级外业核查对象生成具体核查图斑清单、地理位置及核查要求；通过外业核查终端上的外业核查系统进行实时定位与拍照；通过外业核查终端上的外业核查系统将采集的数据回传至国家级管理平台，与内业数据库同步；根据外业核查系统采集的数据与所述图斑的信息进行对比，确认所述图斑的信息是否准确；将对比得到的结果进行分类并标注得到需要复核的图斑清单；将所述图斑清单发送至国家级管理平台；国家级管理平台生成异常清单及核查意见，并反馈至相关省级自然资源主管部门；省级自然资源主管部门在接到反馈的问题图斑后，负责组织市、县级自然资源部门进行整改；整改单位上传整改成果；根据所述整改成果确认是否整改合格，如果否，则向整改单位发送审核不通过的信息，进行新一轮的整改，直至问题彻底解决。在一种可能的实现方式中，通过外业核查终端上的外业核查系统的界面包括如下功能模块：任务总览模块：用于对外业核查图斑的情况进行总览，包括核查图斑的数量、各类图斑的分布情况、图斑位置总体分布；图斑信息查询模块：用于查看图斑的具体信息，包括图斑类型、地理位置、影像信息；图斑定位模块：用于确认图斑的实际地理位置，并将坐标信息写入系统；图斑位置导航模块：用于调用地图软件，实现从当前位置到图斑位置的路径规划及导航；图斑信息编辑模块：用于到达图斑的实地位置后，根据实际情况填写核查信息；照片拍摄模块：用于在图斑位置的内部及周边，按照要求拍摄实地照片，并自动记录拍 照角度；在线指导模块：用于当外业人员在外业核查工作中遇到技术性难题时，通过视频通话功能请求专家的在线指导；数据加密模块：用于在向外业人员下发数据及外业任务完成后向内业人员提交数据时，需要对数据进行加密处理成果提交外业核查任务完成后，需要进行任务的提交。在一种可能的实现方式中，外业核查系统的功能流程包括：接收数据；任务总览；选择核查图斑；显示图斑详情；图斑位置导航；图斑信息编辑；判断是否需要专家指导，如果是，进行指导后的图斑信息编辑，如果否，则存储编辑后的结果；判断是否所有图斑均已核查，如果是，对核查成果加密后提交，如果否继续进行下一图斑的核查。在一种可能的实现方式中，外业核查系统的底层包括如下功能模块：数据处理模块、图斑影像处理模块、导航模块、核查业务模块以及成果数据处理模块；数据处理模块，用于对外业核查任务发布方提供的数据进行解析，并将解析后的核查数据加载到相应的图斑信息中，该模块用于将图斑影像数据加载并呈现在界面上；图斑影像处理模块，用于实现图斑展示、手势缩放、面积量测；当外业核查人员到达某块图斑的实地位置时，对实地情况进行拍照，并对图斑的实地情况进行分析，判断实地范围与遥感影像图斑显示范围是否一致，若一致，则填写核查记录，若不一致，则需要绘制不一致部分的形状，系统则会根据绘制的形状，自动计算不一致范围的面积，并进行记录。在一种可能的实现方式中，导航模块，用于根据核查的图斑的实际地理位置调用百度地图，进行路线规划，进而实现导航功能；核查业务模块，用于进行核查图斑的实际土地利用情况的编辑与记录，并保存到数据库，完成实地拍照及照片附件的整理和保存功能；成果数据处理模块，用于将完成核查后的数据进行保存，生成加密成果文件，并将成果数据进行提交。与现有技术相比，本发明的有益效果是：
Smart Images
Figure CN122596710A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of natural resource survey technology, specifically to a closed-loop management method for the entire process of national-level field verification of land change surveys. Background Technology
[0002] The national land use change survey is a legally mandated foundational task for understanding the current state of land use nationwide, protecting arable land, and supporting national spatial planning and natural resource management. National-level field verification, as the final quality checkpoint to ensure the authenticity, accuracy, and timeliness of the survey results, undertakes the core functions of sampling and verifying the results reported by provincial authorities, identifying problems, conducting rectification reviews, and storing the results in the database.
[0003] The shortcomings of existing technology are as follows: Fragmented processes and lack of closed-loop management: Task assignment, on-site verification, internal review, rectification, re-verification, warehousing, and archiving all operate independently, creating information silos and lacking a unified platform for connection. There is no unified tracking mechanism for problem discovery, rectification, re-verification, and resolution, easily leading to "missed problems, incomplete rectification, and repeated rework." Poor coordination between internal and external operations: Long waiting periods for provincial-level reporting and national-level verification, inconsistent data versions, duplicate submissions, and overall low efficiency.
[0004] Quality control is lax and traceability is poor: the verification process lacks a unified record and binding of the entire process trajectory, timestamps, personnel, equipment, and supporting evidence, making it impossible to quantify responsibility and trace the source of problems. Quality judgment relies on human experience and lacks unified quantitative standards (such as error rate, evidence standards, and boundary accuracy), resulting in strong subjectivity in judgment. Multi-level verification (county-level self-inspection, provincial review, and national verification) lacks strong binding quality control at each stage, making it easy for problems from previous stages to carry over to the next.
[0005] Insufficient information technology support and low level of intelligence: Field verification still mainly relies on paper records, offline photography, and manual data entry, resulting in delayed data uploads, errors, and low efficiency.
[0006] The lack of a unified national-level verification cloud platform, mobile verification terminal, and evidence submission APP makes it impossible to achieve real-time task reception, trajectory monitoring, instant evidence uploading, remote guidance, and progress visualization.
[0007] The integration of multi-source data (remote sensing images, land survey database, planning, approval, and satellite imagery) is insufficient, and the location of land parcels, determination of land types, and change analysis rely on manual labor, resulting in a low level of intelligence. Summary of the Invention
[0008] This invention provides a closed-loop management method for the entire process of national-level field verification of land change surveys, applicable to national-level verification work such as annual land change surveys, satellite imagery enforcement, farmland protection, and dynamic monitoring of land use.
[0009] According to one aspect of this disclosure, a closed-loop management method for the entire process of national-level field verification in land change surveys is provided, the method comprising: The process involves obtaining the review results of a comprehensive internal review of the land change survey results reported by provincial-level units by national-level technical institutions; identifying land parcels with questionable land categories, boundaries, and attribute information through image recognition, as well as identifying farmland protection and construction land parcels, to determine national-level field verification targets; the field verification terminal generating a specific list of verification parcels, their geographical locations, and verification requirements based on the received national-level field verification targets; real-time positioning and photography using the field verification system on the field verification terminal; transmitting the collected data back to the national-level management platform through the field verification system on the field verification terminal, synchronizing it with the internal database; and comparing the data collected by the field verification system with the aforementioned... The information of the map features is compared to confirm their accuracy; the comparison results are categorized and labeled to obtain a list of map features requiring review; this list is sent to the national management platform; the national management platform generates an anomaly list and verification opinions, and feeds them back to the relevant provincial natural resources authorities; upon receiving feedback on the problematic map features, the provincial natural resources authorities are responsible for organizing municipal and county-level natural resources departments to rectify them; the rectification units upload the rectification results; based on the rectification results, it is confirmed whether the rectification is qualified; if not, a message of failure to pass the review is sent to the rectification units, and a new round of rectification is initiated until the problem is completely resolved. In one possible implementation, the interface of the field verification system on the field verification terminal includes the following functional modules: Task Overview Module: used to provide an overview of the field verification status, including the number of verified map features, the distribution of various types of map features, and the overall location distribution of map features; Map Feature Information Query Module: used to view specific information about map features, including map feature type, geographical location, and image information; Map Feature Location Module: used to confirm the actual geographical location of the map feature and write the coordinate information into the system; Map Feature Location Navigation Module: used to call map software to realize path planning and navigation from the current location to the location of the map feature. The system comprises the following modules: Navigation; Map Patch Information Editing Module: Used to fill in verification information based on the actual situation after arriving at the actual location of the map patch; Photo Taking Module: Used to take on-site photos of the map patch location and its surroundings as required, and automatically record the shooting angle; Online Guidance Module: Used to request online guidance from experts via video call when field personnel encounter technical difficulties during field verification work; Data Encryption Module: Used to encrypt data when distributing data to field personnel and submitting data to office personnel after the completion of field tasks. Submission of Results: After the completion of the field verification task, the task needs to be submitted. In one possible implementation, the functional flow of the field verification system includes: receiving data; task overview; selecting map patches for verification; displaying map patch details; map patch location navigation; map patch information editing; determining whether expert guidance is needed, and if so, editing the map patch information after guidance, otherwise storing the edited result; determining whether all map patches have been verified, and if so, encrypting the verification results and submitting them, otherwise continuing to the next map patch for verification.In one possible implementation, the underlying layer of the field verification system includes the following functional modules: a data processing module, a map patch image processing module, a navigation module, a verification business module, and a result data processing module. The data processing module parses the data provided by the field verification task issuer and loads the parsed verification data into the corresponding map patch information. This module loads and displays the map patch image data on the interface. The map patch image processing module enables map patch display, gesture zooming, and area measurement. When field verification personnel arrive at the actual location of a map patch, they take photos of the actual situation and analyze the actual situation to determine whether the actual area matches the remote sensing image patch display area. If they match, a verification record is filled out; if they do not match, the shape of the inconsistent part needs to be drawn. The system will automatically calculate the area of the inconsistent area based on the drawn shape and record it. In one possible implementation, a navigation module is used to call Baidu Maps based on the actual geographical location of the verified map features to perform route planning and thus realize navigation functionality; a verification business module is used to edit and record the actual land use status of the verified map features and save it to the database, and to complete the organization and saving of on-site photography and photo attachments; a results data processing module is used to save the data after verification, generate encrypted results files, and submit the results data. Compared with the prior art, the beneficial effects of this invention are: The national-level field verification method for land use change surveys employs a closed-loop management approach that leverages a digital platform and a professional team for execution. Through a rigorous process of "internal screening and identification - on-site verification - precise feedback on issues - rectification and implementation within a specified timeframe - result review and confirmation," the method ensures the authenticity of the original survey data and forms a complete management loop of "survey discovery, rectification and implementation, and results feedback," providing a solid and reliable data foundation for natural resource management. Attached Figure Description
[0010] Figure 1 This invention discloses a flowchart illustrating a closed-loop management method for the entire process of national-level field verification of land change surveys, according to an embodiment of the present disclosure. Detailed Implementation
[0011] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.
[0012] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.
[0013] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.
[0014] The closed-loop management method for the entire process of national-level field verification of land change surveys is applicable to national-level verification work such as annual land change surveys, satellite imagery enforcement, farmland protection, and dynamic monitoring of land use.
[0015] According to one aspect of this disclosure, a closed-loop management method for the entire process of national-level field verification in land change surveys is provided, the method comprising: The process involves obtaining the review results of a comprehensive internal review of the land change survey results reported by provincial-level units by national-level technical institutions; identifying land parcels with questionable land categories, boundaries, and attribute information through image recognition, as well as identifying farmland protection and construction land parcels, to determine national-level field verification targets; the field verification terminal generating a specific list of verification parcels, their geographical locations, and verification requirements based on the received national-level field verification targets; real-time positioning and photography using the field verification system on the field verification terminal; transmitting the collected data back to the national-level management platform through the field verification system on the field verification terminal, synchronizing it with the internal database; and comparing the data collected by the field verification system with the aforementioned... The information of the map features is compared to confirm their accuracy. The comparison results are categorized and labeled to obtain a list of map features requiring review. This list is then sent to the national management platform. The national management platform generates an anomaly list and verification opinions, which are then fed back to the relevant provincial natural resources authorities. Upon receiving feedback on the problematic map features, the provincial natural resources authorities are responsible for organizing municipal and county-level natural resources departments to rectify them. The rectification units upload the rectification results. Based on the rectification results, it is confirmed whether the rectification is qualified. If not, a message indicating failure to pass the review is sent to the rectification unit, and a new round of rectification is initiated until the problem is completely resolved. This method, organized and implemented at the national level, addresses questionable map features in locally reported change survey results. It employs a series of interconnected and progressively advancing steps, including on-site spot checks, problem feedback, rectification supervision, and result review, to ensure the accuracy of survey data, the thorough rectification of problems, and the reliability of the results. The core of this method lies in constructing a complete chain of "verification-feedback-rectification-review," achieving a dynamic cycle of problem discovery and resolution.
[0016] Key aspects of its closed-loop management throughout the entire process: Verification task triggering and map feature locking: The national-level field verification is not a comprehensive rollout, but rather triggered by a rigorous preliminary results review process. First, national-level technical units conduct a comprehensive internal review of the land change survey results reported by the provincial-level units.
[0017] For questionable map patches whose land type, boundary, and attribute information cannot be confirmed through image interpretation or logical analysis during the internal review, as well as key map patches involving critical land types such as farmland protection and construction land, they will be screened and locked as national-level field verification targets.
[0018] Verification tasks are usually organized and deployed by the national-level natural resources authorities, who also specify the scope, focus, and technical requirements of the verification.
[0019] Establishment and task assignment of a specialized verification team: To ensure the professionalism and efficiency of the verification work, a professional field verification team is usually formed by selecting or entrusting experienced technical personnel. The team must be familiar with the survey procedures, land category identification standards, and on-site verification methods. Verification tasks are assigned through a unified digital survey operation platform, clearly defining the specific list of verification plots, geographical locations, and verification requirements for each verification team or individual, thereby achieving accurate task assignment and full-process digital tracking and management. On-site field inspections and verifications and information collection: Based on the task list, the inspection team went deep into the field using methods such as "four no's and two direct approaches" (no prior notice, no advance warning, no reports, no accompanying reception, going directly to the grassroots level and directly to the site); Strictly adhering to the principle of "identifying land types based on the actual situation on the ground," on-site verification was conducted of the boundaries, actual land types, areas, attributes, and reasons for changes of the locked map patches. During the verification process, mobile devices equipped with satellite positioning and orientation sensors were used to take photos of the current status of the map patches from multiple angles and record detailed verification information to form a standardized on-site verification record. The collected data and photos can be transmitted back to the national management platform in real time or promptly, synchronized with the internal database, and provide first-hand evidence for subsequent analysis and judgment.
[0020] Problem assessment, feedback, and handover: After the field verification is completed, the verification team or national-level technical unit will conduct a comprehensive assessment of the on-site verification results to confirm the accuracy of information such as land use classification for map patches. Problematic map patches discovered during the verification (such as incorrect land use classification, inaccurate boundaries, or inconsistent attribute reporting) will be categorized, organized, and clearly marked.
[0021] Subsequently, the list of issues and verification opinions were promptly fed back to the relevant provincial-level natural resources authorities through official channels, and they were instructed to organize rectification. For some problematic land parcels involving illegal land use or requiring law enforcement intervention, a joint mechanism of "investigation discovery - law enforcement notification" can be established simultaneously to transfer problem clues to law enforcement departments and promote the connection between investigation and law enforcement.
[0022] Local rectification implementation and results reporting: Upon receiving feedback on problematic map features from the national level, the provincial-level natural resources authorities are responsible for organizing municipal and county-level natural resources departments to carry out rectification. The rectification work must be completed within the specified time limit (for example, if there is no objection to the problem, the rectification results must be reported within 7 days; if there is an objection, the coordination and review must be completed within the specified time). County-level units need to conduct on-site verification and correct the data again based on the verification opinions, update the land change survey database, and generate the rectified incremental data package; After the rectification results are supervised and guided by the municipal level and reviewed by the provincial level, they are submitted again to the national competent authority. This step constitutes a key step in the "rectification implementation".
[0023] National-level review and closed-loop confirmation: National-level competent authorities or technical units will review and verify the rectification results reported by local authorities. The review will focus on the previously identified problematic land parcels, checking whether they have been rectified as required. Land parcels that pass the review will have their data included in the final land change survey results database; if the review still fails, a new round of feedback and rectification procedures may be initiated until the problem is completely resolved. Ultimately, all results that pass the national-level verification (including field spot checks and subsequent rectification and review) form authoritative data for the annual land change survey, which are applied to various management tasks such as the assessment of farmland protection responsibility targets and the supervision of the implementation of territorial spatial planning.
[0024] In one possible implementation, the interface of the field verification system on the field verification terminal includes the following functional modules: Task Overview Module: used to provide an overview of the field verification status, including the number of verified map features, the distribution of various types of map features, and the overall location distribution of map features; Map Feature Information Query Module: used to view specific information about map features, including map feature type, geographical location, and image information; Map Feature Location Module: used to confirm the actual geographical location of the map feature and write the coordinate information into the system; Map Feature Location Navigation Module: used to call map software to realize path planning and navigation from the current location to the location of the map feature. The system comprises the following modules: Map Patch Information Editing Module: Used to fill in verification information based on the actual situation after arriving at the map patch's location; Photo Taking Module: Used to take on-site photos of the map patch's interior and surrounding area according to requirements, and automatically record the shooting angle; Online Guidance Module: Used for field personnel to request online expert guidance via video call when encountering technical difficulties during field verification work; Data Encryption Module: Used to encrypt data when distributing data to field personnel and submitting data to office personnel after completing field tasks. Submission of Results: After the field verification task is completed, the task needs to be submitted. First, import the field verification data to the designated location on the mobile device. The system should have a task overview function, enabling a comprehensive view of the map patches in the field verification work area. The system should have a map patch information query function, enabling users to view detailed information of the map patches to be verified, determine their geographical location, and perform route planning and navigation. After arriving at the map patch's location, the system should edit the map patch information according to relevant operating specifications, fill in the verification record, and save the verification results. If you encounter unsolvable technical problems during the verification process, you can request guidance from online experts. The system should also have the function of determining the verification status of map features; if there are still map features that have not been verified, data cannot be submitted. Once all map features have been verified, the system should encrypt the results and submit them.
[0025] In one possible implementation, the functional flow of the field verification system includes: receiving data; task overview; selecting verification patches; displaying patch details; patch location navigation; patch information editing; determining whether expert guidance is needed, and if so, editing the patch information after guidance, and if not, storing the edited result; determining whether all patches have been verified, and if so, encrypting and submitting the verification results, and if not, continuing to verify the next patch. In one possible implementation, the underlying layer of the field verification system includes the following functional modules: a data processing module, a map patch image processing module, a navigation module, a verification business module, and a result data processing module. The data processing module parses the data provided by the field verification task issuer and loads the parsed verification data into the corresponding map patch information. This module loads and displays the map patch image data on the interface. The map patch image processing module enables map patch display, gesture zooming, and area measurement. When field verification personnel arrive at the actual location of a map patch, they take photos of the actual situation and analyze the actual situation to determine whether the actual area matches the remote sensing image patch display area. If they match, a verification record is filled out; if they do not match, the shape of the inconsistent part needs to be drawn. The system will automatically calculate the area of the inconsistent area based on the drawn shape and record it. In one possible implementation, the navigation module is used to call Baidu Maps based on the actual geographical location of the verified map features to perform route planning and thus realize navigation functionality; the verification business module is used to edit and record the actual land use status of the verified map features and save it to the database, completing the functions of organizing and saving on-site photos and photo attachments; the result data processing module is used to save the data after verification, generate encrypted result files, and submit the result data. The database of the land change survey field verification system is a spatial database, which stores various information such as the coordinates, area, land type, and ownership nature of the field-verified map features. Therefore, during the database construction process, the database construction work should be carried out in a standardized manner according to the above-mentioned database construction principles to facilitate the system's organization, management, and use of data. The field verification work mainly targets four types of map feature data for verification: facility agricultural land features, temporary land features, demolition land features, and pseudo-change land features. These four types of map features are introduced below.
[0026] Agricultural facility land refers to land used directly for commercial livestock and poultry sheds, factory-style crop cultivation, or aquaculture production facilities and their corresponding ancillary land, as well as agricultural facility land such as drying yards outside rural residential land. Demolition land refers to land that, due to the presence of illegal buildings within its boundaries, is deemed by the local land resources department to be subject to demolition. False change patches refer to land where the topography and landforms reflected in remote sensing images have changed due to various reasons, but the actual land use and the actual status of mineral resource exploration and mining have not changed during the monitoring period.
[0027] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A closed-loop management method for the entire process of national-level field verification in land use change surveys, characterized by: The method includes: Obtain the review results of the comprehensive internal review of the land change survey results reported by the provincial level by the national-level technical unit; By identifying land parcels with questionable land use, boundaries, and attribute information through image recognition, as well as identifying farmland protection and construction land parcels, the national-level field verification targets are determined; The field verification terminal generates a specific list of verification patches, their geographical locations, and verification requirements based on the national-level field verification targets received. Real-time location tracking and photo taking are performed using the field verification system on the field verification terminal; The collected data is transmitted back to the national management platform through the field verification system on the field verification terminal, and synchronized with the internal database. The accuracy of the map feature information is confirmed by comparing the data collected by the field verification system with the map feature information. The comparison results are categorized and labeled to obtain a list of map features that need to be reviewed; Send the list of map features to the national-level management platform; The national-level management platform generates an anomaly list and verification opinions, and feeds them back to the relevant provincial-level natural resources authorities. After receiving the feedback on the problematic map patches, the provincial-level natural resources authorities are responsible for organizing the municipal and county-level natural resources departments to carry out rectification. The rectification unit uploads the rectification results; Based on the rectification results, confirm whether the rectification is qualified. If not, send a message of failure to the rectification unit and carry out a new round of rectification until the problem is completely resolved.
2. The closed-loop management method for the entire process of national-level field verification of land change surveys as described in claim 1, characterized in that, The interface of the field verification system on the field verification terminal includes the following functional modules: Task Overview Module: Used to provide an overview of the field verification of map features, including the number of map features verified, the distribution of various types of map features, and the overall distribution of map feature locations; Image patch information query module: used to view specific information about image patches, including image patch type, geographical location, and image information; Map patch positioning module: used to confirm the actual geographical location of map patches and write the coordinate information into the system; Map location navigation module: used to call map software to realize path planning and navigation from the current location to the map location; Map patch information editing module: used to fill in verification information according to the actual situation after arriving at the actual location of the map patch; Photo capture module: Used to take real-world photos of the area inside and around the image patch as required, and automatically record the shooting angle; Online guidance module: This module allows field personnel to request online guidance from experts via video call when they encounter technical difficulties during field verification work. Data encryption module: This module is used to encrypt data when distributing data to field personnel and submitting data to office personnel after the completion of field tasks. The results are submitted after the field verification task is completed.
3. The closed-loop management method for the entire process of national-level field verification of land change surveys as described in claim 1, characterized in that, The functional workflow of the field verification system includes: Receive data; Mission Overview; Select the image patch for verification; Show details of the image patch; Map location navigation; Image information editing; Determine whether expert guidance is needed. If so, edit the map information after guidance; otherwise, save the edited result. Determine whether all map features have been verified. If yes, encrypt the verification results and submit them. If no, proceed to verify the next map feature.
4. The closed-loop management method for the entire process of national-level field verification of land change surveys as described in claim 1, characterized in that, The underlying structure of the field verification system includes the following functional modules: The system includes a data processing module, a map image processing module, a navigation module, a verification business module, and a results data processing module. The data processing module is used to parse the data provided by the field verification task issuer and load the parsed verification data into the corresponding map patch information. This module is used to load the map patch image data and display it on the interface. The image processing module is used to display image patches, zoom in / out using gestures, and measure the area. When field inspectors arrive at the actual location of an image patch, they take photos of the actual situation and analyze the actual situation to determine whether the actual area matches the area displayed in the remote sensing image patch. If they match, an inspection record is filled out. If they do not match, the shape of the inconsistent part needs to be drawn, and the system will automatically calculate the area of the inconsistent area based on the drawn shape and record it.
5. The closed-loop management method for the entire process of national-level field verification of land change surveys according to claim 4, characterized in that, The navigation module is used to call Baidu Maps based on the actual geographical location of the verified map features, perform route planning, and thus realize the navigation function; The verification business module is used to edit and record the actual land use of the verified map plots and save them to the database. It also completes the functions of organizing and saving on-site photos and photo attachments. The results data processing module is used to save the data after verification, generate encrypted results files, and submit the results data.