A method and system for obtaining virtual sub-field boundary

Abstract

The present invention provides a method and system for obtaining virtual sub-field plot boundaries, including: based on the central meridian of the target plot, obtaining the point coordinates of each measurement point and performing point coding; the measurement point is determined according to the boundary of the sub-field plot in the target plot; and the sub-field plot boundary information of the target plot is obtained according to the point coordinates and point coding of all measurement points. The method and system for obtaining virtual sub-field plot boundaries provided by the present invention obtains the sub-field plot boundary information in the target plot by measuring, locating and coding the measurement points, and can use the sub-field plot boundary information to extract point coordinates when farmers request to withdraw from large-scale operations, thereby assisting in the accurate restoration of the sub-field plot boundaries.

Description

Technical Field

[0001] The present invention relates to the field of agricultural technology, and in particular to a method and system for acquiring virtual sub-field boundaries. Background Art

[0002] At present, large-scale operation of agricultural land has become an agricultural development trend. Sub-field blocks are small plots of farmland belonging to each farmer. The integration of sub-field block boundaries in agricultural land is directly related to the fundamental interests of farmers. Farmers are worried about how to protect their subsequent rights and interests after the sub-field block boundaries are eradicated. For example, they are worried about whether the original sub-field block boundaries can be accurately restored after withdrawing from large-scale operations in the future. Therefore, it is very important and necessary to accurately obtain the boundary information of sub-field blocks of existing agricultural land and scientifically manage the boundaries of virtual sub-field blocks after land preparation to ensure the accurate restoration of the sub-field block boundaries of farmers who have withdrawn from large-scale operations.

[0003] Since the high-precision measured coordinates of farmland plot boundaries in geographic coordinates are confidential data, it is difficult for farmers or contractors to obtain them. Therefore, the commonly used method is to extract farmland plot boundaries based on satellite and UAV remote sensing images. However, the accuracy of farmland plot boundaries extracted by the above method is low. Summary of the invention

[0004] In view of the problems existing in the prior art, an embodiment of the present invention provides a method and system for obtaining virtual sub-field boundaries.

[0005] The present invention provides a method for acquiring virtual sub-field plot boundaries, comprising: acquiring the point coordinates and point code of each measuring point based on the central meridian of the target plot; the measuring point is determined according to the boundaries of the sub-field plots in the target plot; and acquiring the sub-field plot boundary information of the target plot according to the point coordinates and point codes of all measuring points.

[0006] According to a virtual sub-field plot boundary acquisition method provided by the present invention, the sub-field plot boundary information of the target plot is obtained according to the point coordinates and point codes of all measurement points, including: determining the positioning point of each measurement point on the background map according to the point coordinates; connecting all the positioning points according to the point code to obtain the sub-field plot boundary information; the point code includes the measurement sequence information of the point coordinates; the sub-field plot boundary information includes the ownership information of each sub-field plot.

[0007] According to a method for acquiring virtual sub-field boundaries provided by the present invention, the point coordinates and point code of each measuring point are acquired based on the central meridian of the target plot, including: determining the plot numbers of all sub-fields; based on the central meridian, performing positioning measurement on the measuring points to acquire the measurement coordinates of all the measuring points; calibrating the measurement coordinates to determine the point coordinates; and determining the point code according to the plot number and the measurement sequence information of the positioning measurement.

[0008] According to a method for acquiring a virtual sub-field boundary provided by the present invention, the measured coordinates are calibrated to determine the point coordinates, including: obtaining a calculated distance based on the measured coordinates of any two adjacent measured points; determining the measurement error of the two adjacent measured points based on the calculated distance and the actual distance between the two adjacent measured points; if the measurement error is less than a preset threshold, determining the measured coordinates of the two adjacent measured points as the point coordinates; if the measurement error is not less than the preset threshold, re-positioning and measuring the measured points until the re-acquired measurement error is less than the preset threshold.

[0009] According to a method for obtaining a virtual sub-field boundary provided by the present invention, after determining the point code, it also includes: determining a boundary sketch of the sub-field according to the field number, and the point codes and point coordinates of all measurement points.

[0010] According to a method for obtaining a virtual sub-field boundary provided by the present invention, after determining the boundary sketch of the sub-field, all the positioning points are connected according to the point code to obtain the sub-field boundary information, including: according to the measurement sequence information, all the positioning points are sequentially connected according to the point code to determine the preliminary boundary of the sub-field; using the boundary sketch to correct the preliminary boundary to obtain the corrected boundary of the sub-field; according to the corrected boundary and the attribution information, the sub-field boundary information is obtained.

[0011] According to a virtual sub-field plot boundary acquisition method provided by the present invention, the sub-field plot boundary information is acquired according to the corrected boundary and the ownership information, including: determining the area information of each sub-field plot according to the point coordinates; and generating the sub-field plot boundary information according to the ownership information, the corrected boundary and the area information.

[0012] The present invention also provides a virtual sub-field plot boundary acquisition system, comprising: a first acquisition unit, used to acquire the point coordinates and point code of each measurement point based on the central meridian of the target plot; the measurement point is determined according to the boundary of the sub-field plot in the target plot; a second acquisition unit, used to acquire the sub-field plot boundary information of the target plot based on the point coordinates and point codes of all measurement points.

[0013] The present invention also provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any of the above-mentioned methods for acquiring the boundaries of virtual sub-field plots are implemented.

[0014] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the above-mentioned methods for obtaining virtual sub-field boundaries.

[0015] The virtual sub-field boundary acquisition method and system provided by the present invention obtains sub-field boundary information within the target plot by measuring, positioning and encoding the measurement points. When farmers request to withdraw from large-scale operations, the sub-field boundary information can be used to extract point coordinates, thereby assisting in the accurate restoration of the sub-field boundaries. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a flow chart of a method for obtaining virtual sub-field boundaries provided by the present invention;

[0018] Figure 2 It is a plan schematic diagram of a virtual sub-field boundary provided by the present invention;

[0019] Figure 3 It is a flow chart of a method for acquiring and restoring virtual sub-field boundaries provided by the present invention;

[0020] Figure 4 It is a structural schematic diagram of a virtual sub-field boundary acquisition system provided by the present invention;

[0021] Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that, in the description of the embodiments of the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] As my country's agricultural informationization, modernization and intelligence levels continue to improve, rural land is oriented to circulation and rural scale management, specialized agricultural service organizations continue to emerge, and the scale management area of ​​farmland is also expanding year by year. Sub-fields are small plots of farmland belonging to each farmer. In order to facilitate large-scale production and management of farmland, it is necessary to remove the sub-fields and organize them into large plots of farmland.

[0025] After the on-site measurement of the boundaries of farmland plots, the land title certificates obtained by farmers only mark the plot number, boundaries and area. After land consolidation, it is impossible to accurately restore the original sub-plot boundaries. Aiming at the management and restoration of sub-plot boundaries in large-scale agricultural operations, the present invention provides a method and system for obtaining virtual sub-plot boundaries.

[0026] Combine the following Figures 1 to 5 The present invention describes a method and system for obtaining virtual sub-field boundaries provided by an embodiment of the present invention.

[0027] Figure 1 FIG. 1 is a flow chart of a method for obtaining virtual sub-field boundaries provided by the present invention. Figure 1 As shown, including but not limited to the following steps:

[0028] First, in step S1, based on the central meridian of the target plot, the point coordinates and point code of each measuring point are obtained; the measuring point is determined according to the boundary of the sub-field in the target plot.

[0029] Since different sub-plots belong to different farmers, it is necessary to obtain accurate boundary information of the sub-plots to ensure the interests of each farmer and reduce disputes.

[0030] The measuring points can be set on the boundaries of the sub-field blocks. A certain number and positions of the measuring points are set, and the obtained point coordinates can at least completely define the shape, position and area of ​​each sub-field block on the map.

[0031] Specifically, with the central meridian of the target plot as a reference, a positioning device can be used to perform positioning measurement on each measuring point to obtain the point coordinates of each measuring point, and at the same time, each measuring point is encoded according to the measurement order to obtain a point code.

[0032] Before step S1, high-resolution remote sensing images can be used to obtain information such as the approximate geographical location, area size, and surrounding environment of the sub-fields in the target plot, preliminarily determine the boundaries of the sub-fields, and then obtain the approximate number and location of the measurement points, estimate the measurement time and number of equipment, and make preliminary preparations for the positioning measurement of the measurement points.

[0033] Furthermore, in step S2, the sub-field boundary information of the target plot is obtained according to the point coordinates and point codes of all the measurement points.

[0034] Specifically, according to the point coordinates and point codes of all measuring points, positioning is performed on the background map according to each point coordinate to obtain multiple positioning points; according to the point codes, the positioning points are connected in the measurement order of the corresponding point coordinates until the complete sub-field boundary is obtained, so as to obtain the sub-field boundary information of the target plot.

[0035] The virtual sub-field boundary acquisition method provided by the present invention obtains sub-field boundary information within the target plot by measuring, positioning and encoding the measurement points. When farmers request to withdraw from large-scale operations, the sub-field boundary information can be used to extract point coordinates, thereby assisting in the accurate restoration of the sub-field boundaries.

[0036] Optionally, based on the central meridian of the target plot, the point coordinates and point code of each measurement point are obtained, including:

[0037] Determine the field numbers of all sub-fields;

[0038] Based on the central meridian, positioning measurement is performed on the measurement points to obtain measurement coordinates of all measurement points; the measurement coordinates are calibrated to determine the point coordinates;

[0039] The point code is determined according to the field number and the measurement sequence information of the positioning measurement.

[0040] Before measuring, locating and coding the measuring points, the field number of each sub-field can be determined according to the arrangement of the sub-fields.

[0041] Among them, the positioning device used to measure the point coordinates can be a Global Positioning System (GPS) receiver, a Continuously Operating Reference Stations (CORS) account of the province where the target plot is located, or point correction using a base station.

[0042] During the positioning measurement process, the GPS receiver can be connected to the Qianxun account or CORS account to achieve real-time differentiation and obtain high-precision point data of the sub-field boundary, with an accuracy of up to centimeter level.

[0043] Taking the Qianxun account as an example, first create a project before measuring. To ensure the accuracy of the measured point coordinates, determine the central meridian at the actual location of the target plot. Then enter the Qianxun account name, password, source node and Internet Protocol (IP) as required, and select the port according to the coordinate system. The China Geodetic Coordinate System 2000 (CGCS2000) currently unified in the national surveying and mapping system is used, and the port is set to 8003.

[0044] Based on the central meridian, using the positioning and measurement function of the GPS receiver, in strict accordance with the measurement specifications of the GPS receiver, the measurement points in the actual sub-field edge are positioned and measured, the measurement coordinates of each measurement point are obtained, and then the measurement coordinates are calibrated to determine the coordinates of the point.

[0045] The measurement points are coded according to the field number to obtain the point code. Among them, all the point codes in the same sub-field include the same field number to determine that these point codes are in the same field.

[0046] According to the method for acquiring virtual sub-field boundaries provided by the present invention, positioning measurement and coding are performed on each measuring point, thereby providing a basis for acquiring sub-field boundaries.

[0047] Optionally, calibrating the measured coordinates to determine the point coordinates includes:

[0048] Obtain the calculated distance based on the measurement coordinates of any two adjacent measurement points;

[0049] Determining the measurement error of the two adjacent measurement points according to the calculated distance and the actual distance between the two adjacent measurement points;

[0050] If the measurement error is less than a preset threshold, determining the measurement coordinates of the two adjacent measurement points as the point coordinates;

[0051] If the measurement error is not less than the preset threshold, the measurement point is re-positioned and measured until the measurement error obtained again is less than the preset threshold.

[0052] While conducting GPS point measurement, two adjacent measurement points are randomly selected, and the actual distance between the two adjacent measurement points is measured using a laser rangefinder. The distance calculation function in the GPS receiver is used to calculate the calculated distance between the measurement coordinates corresponding to the two adjacent measurement points, and the measurement error between the actual distance and the calculated distance is obtained. According to the third-level accuracy requirements of land ownership boundary points in TD / T 1001-2012 "Cadastral Survey Regulations", the preset threshold is set to 10 centimeters (centimeter, cm). When the measurement error is less than 10 cm, the measurement accuracy requirements are met, and the measurement coordinates are determined to be the final point coordinates; when the measurement error is not less than 10 cm, the GPS receiver needs to be used again to re-position the two measurement points until the re-acquired measurement error is less than 10 cm.

[0053] The calculation formula for calculating the distance L is as follows:

[0054]

[0055] Among them, X1 and Y1 are the horizontal coordinate and vertical coordinate of one of the measurement points respectively; X2 and Y2 are the horizontal coordinate and vertical coordinate of the other measurement point respectively.

[0056] According to the method for acquiring virtual sub-field boundaries provided by the present invention, by calibrating the measurement coordinates of the measurement points, the measurement error can be reduced and the measurement accuracy can be further improved.

[0057] Optionally, after determining the point code, the method further includes:

[0058] The boundary sketch of the sub-field is determined based on the field number, the point codes and the point coordinates of all the measuring points.

[0059] While positioning the measurement points, a point distribution sketch is drawn for the GPS receiver based on the field number of the sub-field, the point code and the point coordinates of the measurement points. Based on the point distribution sketch, the boundary sketch of the sub-field is determined.

[0060] According to the method for obtaining virtual sub-field boundaries provided by the present invention, a boundary sketch is drawn as a reference for determining sub-field boundary information, thereby providing a basis for ensuring the accuracy and completeness of the sub-field boundaries.

[0061] Optionally, obtaining sub-field boundary information of the target plot according to the point coordinates and point codes of all measurement points includes:

[0062] Determine the location of each measuring point on the background map according to the point coordinates;

[0063] Connecting all the positioning points according to the point codes to obtain the sub-field boundary information;

[0064] The point code includes measurement sequence information of the point coordinates;

[0065] The sub-field boundary information includes ownership information of each sub-field.

[0066] Specifically, after obtaining the point coordinates and point codes of all measurement points in the target plot, first, export the measurement information in the GPS receiver. The measurement information may include three parts: field number, point coordinates (X, Y, Z) and point code. Save the exported data as files in digital audio tape (DAT) format and spreadsheet (Excel) format.

[0067] The measurement information is loaded using the virtual sub-field boundary software for agricultural land (hereinafter referred to as: software). The software will automatically classify the information according to the field number and point code, and then automatically map the sub-field boundary using the point coordinates.

[0068] The software can be developed based on Vue.js, Spring boot or MySQL, and is used to realize the information management, mapping and virtual sub-field boundary restoration guidance of agricultural land sub-fields. The main functions include the import of measurement information, sub-field boundary mapping, ownership information input, sub-field boundary export and plot information management. The ownership information at least includes: the name of the household owner of the sub-field and the contact information.

[0069] Among them, Vue.js is a progressive JavaScript framework for building user interfaces, and MySQL is a relational database management system.

[0070] By clicking the "Import Data" button on the web page, the data exported by the GPS receiver can be imported into the web page (abbreviated as: web). The web side will organize the data according to the corresponding file format, and then convert it into longitude and latitude and load it onto the background map of the web side to determine the location of each measurement point on the background map.

[0071] When using a GPS receiver for positioning measurement, the field number of each sub-field will be recorded and the measurement points will be encoded. The obtained point code includes the field number and the collection order of the point coordinates.

[0072] Figure 2 is a plan view of a virtual sub-field boundary provided by the present invention, such as Figure 2 As shown, the dots are the positioning points of each measuring point on the background map, totaling 11; the numbers (1 to 11) are the measurement sequence information, which represents the time sequence of each measuring point in the positioning measurement process; the letters (a to d) are the field numbers, totaling 4 sub-fields.

[0073] For example, Figure 2 The point code corresponding to a positioning point in the figure is 5(c, d). In the point code, 5 indicates that the measurement point corresponding to the positioning point is the fifth positioning measurement, and (c, d) indicates that the measurement point corresponding to the positioning point is located on the boundary of sub-field block c and sub-field block d at the same time.

[0074] After the data is imported into the web, the background algorithm of the software will connect the positioning points according to the measurement time sequence of each point code.

[0075] Assume that we need to determine the boundaries of sub-field b. The software automatically connects all points with the field number b according to the point coordinates in the order of measurement time. Specifically, 2(a, b) is first connected to 3(b, c), then 3(b, c) is connected to 9(b, c), and then 9(b, c) is connected to 10(a, b). The preliminary boundaries of sub-field b can be obtained. The same is true for other plots.

[0076] The sub-field block boundary information finally obtained also includes the ownership information of each sub-field block.

[0077] According to the method for obtaining virtual sub-field boundaries provided by the present invention, positioning is performed on a background map through point coordinates and point codes, which facilitates the operation and management of sub-fields and provides a basis for ultimately obtaining sub-field boundary information.

[0078] Optionally, after determining the boundary sketch of the sub-field block, connecting all the positioning points according to the point code to obtain the boundary information of the sub-field block includes:

[0079] According to the measurement sequence information, all the positioning points are sequentially connected according to the point codes to determine the preliminary boundaries of the sub-field blocks;

[0080] Correcting the preliminary boundary using the boundary sketch to obtain the corrected boundary of the sub-field block;

[0081] The sub-field boundary information is obtained according to the corrected boundary and the ownership information.

[0082] According to the measurement sequence information corresponding to the positioning points, all the positioning points are connected in the order of measurement time, and the preliminary boundaries of all sub-field blocks can be automatically generated.

[0083] According to the boundary sketch, check the accuracy of the preliminary boundary. If there are any connection errors or missing parts, manual modification and correction are required to ensure the integrity and accuracy of the corrected boundaries of the sub-fields within the target plot.

[0084] Specifically, first create a folder and name the folder. The naming principle is mainly based on the name of the village to which the target plot belongs. Then, the ownership information of each sub-plot is added to the folder.

[0085] The folder can also include the area information and boundaries of each sub-field block.

[0086] Associate the information in the folder with the corrected boundary and save it, and you can eventually get the sub-field boundary information.

[0087] According to the method for acquiring virtual sub-field boundaries provided by the present invention, the initially formed boundaries are corrected and supplemented by using boundary sketches to ensure the integrity and accuracy of the sub-field boundaries.

[0088] Optionally, obtaining the sub-field boundary information according to the corrected boundary and the ownership information includes:

[0089] According to the point coordinates, determining the area information of each sub-field block;

[0090] The sub-field boundary information is generated according to the ownership information, the corrected boundary and the area information.

[0091] The software can determine the area information of each sub-field plot based on the point coordinates, and then import the ownership information and area information into the correction boundary to generate the sub-field plot boundary information of the target plot.

[0092] According to the method for acquiring virtual sub-field boundaries provided by the present invention, ownership information and area information are imported into the corrected boundaries to generate complete sub-field boundary information, which facilitates subsequent management and restoration of sub-field boundaries and further provides protection for the rights and interests of farmers.

[0093] After the information is entered, the data acquisition part of the software system is completed. According to the sub-field boundary information and the background map, the agricultural sub-field boundary map of the target plot can be obtained for browsing or printing paper maps.

[0094] In order to facilitate land management, the target plot can be managed according to the sub-field boundary map of agricultural land. The original sub-field boundaries can be removed, leveled and prepared. At this time, the original sub-field boundaries disappear, and the sub-field boundary information of the target plot is retained in the software system. If necessary, the sub-field boundary information in the software system can be used to assist in agricultural planning and management.

[0095] If it is necessary to restore the boundaries of the sub-fields in the target plot, you can restore the location by calling the point coordinates and point codes in the system folder, or you can directly extract the point coordinates and point codes in the agricultural land sub-field boundary map for restoration.

[0096] Among them, the point coordinates and point codes corresponding to each positioning point can be queried by extracting them from the sub-field boundary map of the agricultural land, without having to look for the original data. The extracted point coordinates and point codes can be saved in an Excel file in a certain format.

[0097] Import the sorted point coordinates and point codes into the GPS, and then use the point stakeout function in the GPS to stake out one by one according to the point coordinates. Finally, all the points to be staked out are staked out on site to complete the accurate restoration of the sub-field boundary.

[0098] Figure 3 FIG. 1 is a flow chart of a method for obtaining and restoring virtual sub-field boundaries provided by the present invention. Figure 3 As shown, first, based on remote sensing images, the sub-field boundaries within the target plot are preliminarily determined; further, the point coordinates and point codes of the measurement points are obtained using a high-precision GPS receiver; further, the point coordinates are verified and corrected; further, the sub-field boundaries within the target plot are mapped using the point codes and the verified and corrected point coordinates; further, the ownership information is entered into the sub-field boundary map; further, the sub-field boundaries are managed and mapped; further, after exiting large-scale operations, the sub-field boundaries are accurately restored.

[0099] Figure 4 Schematic diagram of the structure of the virtual sub-field boundary acquisition system provided by the present invention. Figure 4 As shown, including:

[0100] The first acquisition unit 401 is used to acquire the point coordinates and point code of each measurement point based on the central meridian of the target plot; the measurement point is determined according to the boundary of the sub-field in the target plot;

[0101] The second acquisition unit 402 is used to acquire the sub-field boundary information of the target plot according to the point coordinates and point codes of all the measurement points.

[0102] During the operation of the system, the first acquisition unit 401 acquires the point coordinates and point code of each measuring point based on the central meridian of the target plot; the measuring point is determined according to the boundary of the sub-field block within the target plot; the second acquisition unit 402 acquires the sub-field block boundary information of the target plot based on the point coordinates and point codes of all measuring points.

[0103] First, the first acquisition unit 401 acquires the point coordinates and point code of each measurement point based on the central meridian of the target plot; the measurement point is determined according to the boundary of the sub-field in the target plot.

[0104] Since different sub-plots belong to different farmers, it is necessary to obtain accurate boundary information of the sub-plots to reduce disputes and ensure the interests of each farmer.

[0105] The measurement points can be set on the boundaries of the sub-field blocks. The number and positions of the measurement points can be set, and the obtained point coordinates can at least completely define the shape and position of each sub-field block on the map.

[0106] Specifically, with the central meridian of the target plot as a reference, a positioning device can be used to perform positioning measurement on each measuring point to obtain the point coordinates of each measuring point, and at the same time, each measuring point is encoded according to the measurement order to obtain a point code.

[0107] Before processing by the first acquisition unit 401, high-resolution remote sensing images can also be used to obtain information such as the approximate geographical location, area size, and surrounding environment of the sub-field blocks in the target plot, preliminarily determine the boundaries of the sub-field blocks, and then estimate the approximate number and location of the measuring points, estimate the measurement time and number of equipment, and make preliminary preparations for the positioning measurement of the measuring points.

[0108] Furthermore, the second acquisition unit 402 acquires the sub-field boundary information of the target plot according to the point coordinates and point codes of all the measurement points.

[0109] Specifically, according to the point coordinates and point codes of all measuring points, positioning is performed on the background map according to each point coordinate to obtain multiple positioning points; according to the point codes, the positioning points corresponding to the point codes are connected in the measurement order of the point coordinates until the complete sub-field boundary is obtained, so as to obtain the sub-field boundary information of the target plot.

[0110] The virtual sub-field plot boundary acquisition system provided by the present invention obtains sub-field plot boundary information within the target plot by measuring, locating and encoding the measurement points. When farmers request to withdraw from large-scale operations, the sub-field plot boundary information can be used to extract point coordinates, thereby assisting in the accurate restoration of the sub-field plot boundaries.

[0111] It should be noted that the virtual sub-field boundary acquisition system provided in the embodiment of the present invention can be implemented based on the virtual sub-field boundary acquisition method described in any of the above embodiments during specific execution, which will not be elaborated in this embodiment.

[0112] Figure 5 is a schematic diagram of the structure of the electronic device provided by the present invention, such as Figure 5 As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530 and a communication bus 540, wherein the processor 510, the communication interface 520 and the memory 530 communicate with each other through the communication bus 540. The processor 510 may call the logic instructions in the memory 530 to execute the virtual sub-field boundary acquisition method, which includes: based on the central meridian of the target plot, acquiring the point coordinates and point code of each measurement point; the measurement point is determined according to the boundary of the sub-field in the target plot; and acquiring the sub-field boundary information of the target plot according to the point coordinates and point codes of all the measurement points.

[0113] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0114] On the other hand, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the virtual sub-field boundary acquisition method provided by the above-mentioned methods, the method including: based on the central meridian of the target plot, obtaining the point coordinates and point code of each measuring point; the measuring point is determined according to the boundary of the sub-field block in the target plot; according to the point coordinates and point codes of all measuring points, the sub-field boundary information of the target plot is obtained.

[0115] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the virtual sub-field block boundary acquisition method provided in the above-mentioned embodiments, the method comprising: based on the central meridian of the target plot, acquiring the point coordinates and point code of each measuring point; the measuring point is determined according to the boundary of the sub-field block in the target plot; and acquiring the sub-field block boundary information of the target plot according to the point coordinates and point codes of all measuring points.

[0116] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0117] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for obtaining virtual sub-field boundaries, characterized in that: include: Based on the central meridian of the target plot, obtain the point coordinates and point code of each measurement point; The measurement point is determined according to the boundary of the sub-field in the target plot; According to the point coordinates and point codes of all the measuring points, the sub-field boundary information of the target plot is obtained; Based on the central meridian of the target plot, obtain the point coordinates and point code of each measurement point, including: Determine the field numbers of all sub-fields; Based on the central meridian, positioning measurement is performed on the measurement points to obtain measurement coordinates of all measurement points; the measurement coordinates are calibrated to determine the point coordinates; Determining the point code according to the field number and the measurement sequence information of the positioning measurement; Calibrating the measured coordinates to determine the point coordinates includes: Obtain the calculated distance based on the measurement coordinates of any two adjacent measurement points; Determining the measurement error of the two adjacent measurement points according to the calculated distance and the actual distance between the two adjacent measurement points; If the measurement error is less than a preset threshold, determining the measurement coordinates of the two adjacent measurement points as the point coordinates; If the measurement error is not less than the preset threshold, re-positioning the measurement point until the measurement error obtained again is less than the preset threshold; The calculation formula for calculating the distance L is as follows: Among them, X1 and Y1 are the horizontal coordinate and vertical coordinate of one of the measurement points respectively; X2 and Y2 are the horizontal coordinate and vertical coordinate of another measurement point respectively; The preset threshold is 10CM.

2. The method for obtaining virtual sub-field boundaries according to claim 1, characterized in that: According to the point coordinates and point codes of all the measurement points, the sub-field boundary information of the target plot is obtained, including: Determine the location of each measuring point on the background map according to the point coordinates; Connecting all the positioning points according to the point codes to obtain the sub-field boundary information; The point code includes measurement sequence information of the point coordinates; The sub-field boundary information includes ownership information of each sub-field.

3. The method for obtaining virtual sub-field boundaries according to claim 1, characterized in that: After determining the point code, the method further includes: The boundary sketch of the sub-field is determined based on the field number, the point codes and the point coordinates of all the measuring points.

4. The method for obtaining virtual sub-field boundaries according to claim 2, characterized in that: After determining the boundary sketch of the sub-field block, connecting all the positioning points according to the point code to obtain the boundary information of the sub-field block includes: According to the measurement sequence information, all the positioning points are sequentially connected according to the point codes to determine the preliminary boundaries of the sub-field blocks; Correcting the preliminary boundary using the boundary sketch to obtain the corrected boundary of the sub-field block; The sub-field boundary information is obtained according to the corrected boundary and the ownership information.

5. The method for obtaining virtual sub-field boundaries according to claim 4, characterized in that: According to the corrected boundary and the ownership information, the sub-field boundary information is obtained, including: According to the point coordinates, determining the area information of each sub-field block; The sub-field boundary information is generated according to the ownership information, the corrected boundary and the area information.

6. A virtual sub-field boundary acquisition system, characterized in that: include: A first acquisition unit is used to acquire the point coordinates and point code of each measurement point based on the central meridian of the target land parcel;The measurement point is determined according to the boundary of the sub-field in the target plot; A second acquisition unit is used to acquire sub-field boundary information of the target plot according to the point coordinates and point codes of all measurement points; Based on the central meridian of the target plot, obtain the point coordinates and point code of each measurement point, including: Determine the field numbers of all sub-fields; Based on the central meridian, positioning measurement is performed on the measurement points to obtain measurement coordinates of all measurement points; the measurement coordinates are calibrated to determine the point coordinates; Determining the point code according to the field number and the measurement sequence information of the positioning measurement; Calibrating the measured coordinates to determine the point coordinates includes: Obtain the calculated distance based on the measurement coordinates of any two adjacent measurement points; Determining the measurement error of the two adjacent measurement points according to the calculated distance and the actual distance between the two adjacent measurement points; If the measurement error is less than a preset threshold, determining the measurement coordinates of the two adjacent measurement points as the point coordinates; If the measurement error is not less than the preset threshold, re-positioning the measurement point until the measurement error obtained again is less than the preset threshold; The calculation formula for calculating the distance L is as follows: Among them, X1 and Y1 are the horizontal coordinate and vertical coordinate of one of the measurement points respectively; X2 and Y2 are the horizontal coordinate and vertical coordinate of another measurement point respectively; The preset threshold is 10CM.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for obtaining the virtual sub-field boundary as described in any one of claims 1 to 5 are implemented.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for obtaining the virtual sub-field boundary as described in any one of claims 1 to 5 are implemented.

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