Ground object fitting repair method, device, computer terminal and storage medium

Abstract

The embodiment of the present invention discloses a method for repairing the overlap of land features, which includes analyzing cadastral data that need to be overlapped to obtain a table of elements to be processed, wherein the cadastral data includes line elements and surface elements of the original land parcel and line elements and surface elements of the original land features, and according to the data recorded in the table of elements to be processed, the surface elements of the original land parcel are converted to obtain land parcel lines, and the surface elements of the original land features are converted to obtain land feature lines. Within a preset tolerance value, the intersection of the land parcel lines that are adjacent to and closest to the land feature lines is found. When the land parcel lines and the land feature lines do not overlap, the intersection of the land feature lines and the land parcel lines is used as a capture. The overlap of the land feature lines and the land parcel lines is achieved by using the added capture points and land feature nodes, and the land feature nodes are the intersection points of the land feature lines. The above scheme repairs the unreasonable errors caused by the misalignment of the land parcels and their related land features, reduces the repair time and ensures the repair quality.

Description

Technical Field

[0001] The present invention relates to the field of data processing and surveying technology, and in particular to a method, device, computer terminal and storage medium for fitting and repairing ground objects. Background Art

[0002] In recent years, in order to safeguard the legitimate rights and interests of farmers, promote the harmony and stability of rural social order, deepen rural reforms, and promote coordinated urban and rural development, all districts and counties are accelerating the registration of rural homesteads and collective construction land in accordance with the relevant requirements and arrangements of the central, provincial and municipal governments on the registration and certification of rural homesteads and collective construction land. Many regions and technical units still use AutoCAD, Southern Cass, and DGN to edit and produce cadastral maps. Due to the measurement methods, measurement means, and measurement errors of land parcels, houses and their ancillary facilities, as well as the non-standard editing and processing of operators, the land parcels and their related features do not fit together, and there are unreasonable errors such as overlaps, gaps, and suspensions. Summary of the invention

[0003] The present invention provides a method for repairing ground objects by fitting, and the specific steps include:

[0004] Analyze the cadastral data that need to be matched and obtain a table of elements to be processed; the cadastral data includes line elements and surface elements of the original land parcel and line elements and surface elements of the original land features;

[0005] According to the data recorded in the table of elements to be processed, the surface elements of the original land parcels are converted to obtain land parcel lines, and the surface elements of the original features are converted to obtain feature lines;

[0006] Determine the intersection point of the land parcel line adjacent to and closest to the feature line within a preset tolerance value;

[0007] When the land parcel line and the feature line do not overlap, the intersection of the feature line and the land parcel line is used as a capture point;

[0008] The feature line and the plot line are overlapped by using the capture point and the feature node, and the feature node is the intersection point of the feature line and the feature line.

[0009] Furthermore, the table of elements to be processed includes:

[0010] The layers, colors, line types, extended codes, area elements and line elements of both the original parcel and the original features.

[0011] Furthermore, the plot lines and feature lines are multiple line segments connected end to end.

[0012] Further, the tolerance value range is 1 to 5 centimeters;

[0013] Further, the determining of the intersection point of the plot line adjacent to and closest to the feature line includes:

[0014] Determining the intersection point of the land parcel line adjacent to and closest to the feature line within a preset tolerance value includes:

[0015] When the feature line and the plot line do not intersect, the feature line is extended within the tolerance value range so that the extended line of the feature line intersects with the closest and adjacent plot line to obtain an intersection point.

[0016] Furthermore, the situation that the land parcel line and the feature line do not overlap includes an overlap, gap or hanging relationship between the land parcel line and the feature line;

[0017] When the land plot line and the feature line do not overlap, taking the intersection of the feature line and the land plot line as a capture point comprises:

[0018] When the land parcel line and the feature line do not overlap, a capture point is obtained by using a topological intersection rule;

[0019] The capture point includes the intersection point of the plot line and the extension line of the feature line and the endpoint of the plot line.

[0020] Furthermore, the method of realizing the alignment of the feature line and the plot line by using the added capture points and feature nodes includes:

[0021] The feature line is moved so that the feature node coincides with the capture point closest to the feature line, so that the original feature surface and line elements where the feature node is located coincide with the plot line where the capture point is located.

[0022] Furthermore, an embodiment of the present application also provides a ground feature fitting repair device, comprising:

[0023] An element processing module is used to analyze the cadastral data that needs to be matched and processed to obtain an element table to be processed, wherein the cadastral data includes line elements and surface elements of the original land parcel and line elements and surface elements of the original land features;

[0024] An element conversion module is used to convert the surface elements of the original land parcels to obtain land parcel lines, and to convert the surface elements of the original features to obtain feature lines according to the data recorded in the table of elements to be processed;

[0025] A search module, used to determine the intersection point of the parcel line adjacent to and closest to the feature line within a preset tolerance value;

[0026] A capture module, used for taking the intersection of the land feature line and the land parcel line as a capture point when the land parcel line and the land feature line do not overlap;

[0027] A repair module is used to use the capture points and feature nodes to achieve the overlap of the feature lines and the plot lines, and the feature nodes are the intersection points of the feature lines.

[0028] Furthermore, an embodiment of the present application also provides a computer terminal, which includes a processor and a memory, wherein the memory stores a computer program, and when the computer program runs on the processor, it executes the ground feature fitting and repair method described in any of the above embodiments.

[0029] Furthermore, an embodiment of the present application also provides a readable storage medium storing a computer program, which executes the ground feature fitting and repairing method described in any one of the above embodiments when running on a processor.

[0030] The technical solution of the present application uses the land parcel as the standard to determine the image elements in the cadastral map that need to be fitted and repaired, then converts the original surface elements of the land features and the land parcel into line elements, organizes their various attribute data and stores them in the table of elements to be processed to ensure that normal patterns are not processed, and then extends the intersection of the land feature lines and the land parcel lines within the preset tolerance value range to obtain capture points, and adsorbs the land feature nodes through the capture points, and adsorbs the land feature lines where the land feature nodes are located to the corresponding land parcel lines, so that the land features that originally did not fit will eventually fit with the land parcel, solving the non-fitting errors caused by various mistakes or errors in the drawing, and the entire repair process ensures that the shape of the land features will not change and the land parcel will not be modified, effectively ensuring the quality of the repaired results. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope of protection of the present invention. In each of the drawings, similar components are numbered similarly.

[0032] Figure 1 A schematic diagram of the process of a method for fitting and repairing ground features of the present application is shown;

[0033] Figure 2A It shows a schematic diagram of the cadastral map mismatch error of this application;

[0034] Figure 2B A schematic diagram of the steps of fitting and repairing features in the present application is shown;

[0035] Figure 2C A schematic diagram showing another step of the ground feature fitting repair of the present application is shown;

[0036] Figure 2D A schematic diagram showing another step of the ground feature fitting repair of the present application is shown;

[0037] Figure 3 A schematic diagram of a land feature fitting and repairing device according to the present application is shown. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0040] Hereinafter, the terms "including", "having" and their cognates, which may be used in various embodiments of the present invention, are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing items or adding the possibility of one or more features, numbers, steps, operations, elements, components or combinations of the foregoing items.

[0041] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0042] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as those generally understood by those skilled in the art to which the various embodiments of the present invention belong. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meanings as the contextual meanings in the relevant technical field and will not be interpreted as having idealized meanings or overly formal meanings unless clearly defined in the various embodiments of the present invention.

[0043] Example 1

[0044] In cadastral maps, due to errors in the measurement and mapping process, the plots and features do not match each other, such as Figure 2AThe cadastral partial map shown has thick lines as plot lines and thin lines as feature lines. As shown in the figure, the feature lines should coincide with the plot lines, but the first feature line does not coincide with the plot lines, so there is a gap problem. The second feature line intersects with the first feature line. Because the first feature line does not coincide with the plot lines, the second feature line, which should theoretically intersect with the plot lines vertically, does not intersect with the plot lines either, so there is a hanging problem. Therefore, a fitting repair operation is required.

[0045] In addition, if Figure 2A The plot line in the figure is shifted to the lower right so that there is still a gap between the plot line and the first feature line, but it intersects with the second feature line. At this time, there is an overlap problem between the plot line and the second feature line.

[0046] refer to Figure 1 Schematic diagram of the fit repair process shown.

[0047] Step S100, analyzing the cadastral data to be fitted to obtain a table of elements to be processed.

[0048] In order to avoid other problems arising during the repair process, it is necessary to limit the data range and various data types to be processed next, so as not to damage the original cadastral data without problems. In this embodiment, the elements that need to be processed include the layers, colors, line types, extended codes and original features of the land parcel and its related objects, as well as the surface and line feature data of the land parcel, so as to form a table of elements to be processed, which is convenient for subsequent fitting operations. If there are no areas with fitting errors, the image elements in those areas will not be stored in the table.

[0049] The table of elements to be processed is shown in Table 1, where the house walls recorded are land features.

[0050] Table 1

[0051]

[0052] Step S200, according to the data recorded in the table of elements to be processed, the surface elements of the original land parcel are converted to obtain land parcel lines, and the surface elements of the original features are converted to obtain feature lines.

[0053] In this embodiment, this step is used to reconstruct the surface elements of the plots and features and convert them into line elements. This is because in the cadastral map, generally speaking, there are errors such as gaps, overlaps and hangings. Such errors only require changing the position of the line segment, translating or extending it. Therefore, it is necessary to convert the data that was originally a surface element into a line element to make the subsequent repair operation possible. Therefore, before performing the overlay repair, it is necessary to convert all the surface elements into line elements, that is, to segment the surface originally stored in an integrated manner and convert it into corresponding line segments. For example, a rectangle belongs to a surface element in the cadastral map. In this step, it is converted into four sides through segmentation and identification. These four sides are the converted line elements, which facilitates subsequent processing.

[0054] Step S300, determining the intersection point of the plot line adjacent to and closest to the feature line within a preset tolerance value.

[0055] After the processing of step S200, only the relationship between lines and points needs to be processed, which simplifies the problems to be processed next. Generally speaking, errors are inevitable when making cadastral maps. The error range is the preset tolerance value in this embodiment. The tolerance value is related to the cadastral measurement specification and generally ranges from 1 to 5 cm. The plot line within the tolerance value range adjacent to the feature line is the correct position of the feature line, so it is necessary to find the intersection of the feature line and its closest adjacent plot line.

[0056] When the feature line itself intersects with the plot line, there is naturally an intersection. When the plot line and the feature line are in a non-connected and non-intersecting state, the feature line and the plot line are extended to intersect and the intersection is found. The length of the extended line is within the above tolerance value range. The plot lines outside the tolerance value range are not considered. Here, finding the intersection by extending the line can ensure that the shape of the feature will not be changed after repair, thereby ensuring the quality of the repair.

[0057] like Figure 2B As shown, continue to use Figure 2A The mark in , after the feature lines are extended in this step, it can be seen that the extension line of the first feature line does not find a plot line that can intersect with it, that is to say, there is no mapping error in the feature line in this direction. The extension line of the second feature line intersects with the plot line, so the plot line is the error of the second feature line in the direction of the extension line. The range of the extension line here does not exceed the preset tolerance value. Because it exceeds the range of the tolerance value, even if it intersects with the plot line, it is a plot line unrelated to the feature.

[0058] Step S400, when the land parcel line and the feature line do not overlap, taking the intersection of the feature line and the land parcel line as a capture point;

[0059] According to the topological intersection rules, the points where the plot lines and feature lines intersect are added to the plot lines as snap points. Similarly, the endpoints of the plot lines are also snap points.

[0060] like Figure 2C As shown, a snap point is added at the intersection of the second feature line extension line and the plot line. This snap point serves as the base point for the subsequent repair process.

[0061] Step S500, using the capture points and feature nodes to realize the overlay of the feature lines and the plot lines, the feature nodes being the intersection points of the feature lines.

[0062] In the application scenario of the present application, all problems of mismatching of plots and features will occur where there are feature nodes. Feature nodes are the intersection points of feature lines and the endpoints of feature lines. Regardless of the gaps, suspensions or overlapping fit problems mentioned above, by extending the feature lines, the plot lines can be found within the tolerance range to obtain capture points. The capture points are the repair points relative to the feature nodes. Within the above tolerance range, find the capture point closest to the feature node, translate the feature node to the capture point, and then perform the same translation or extension processing on the feature elements around the feature node.

[0063] Still refer to Figure 2C There is a point where the feature lines intersect, which is the feature node. In this step, the feature node will be translated to the location of the capture point, so the feature line where the feature node is located will also move accordingly. In this embodiment, the feature node is located on the first feature line and the second feature line. Therefore, here the first feature line is translated to the location of the plot line to make it overlap, and the second feature line is extended to the location of the capture point. The final fit repair result is as follows: Figure 2D As shown, there are no gaps in the repaired image, the second feature line also intersects with the plot line, there is no hanging problem, the feature and the plot fit together, and the repair is completed.

[0064] Because the technical solution of the present application is to add capture points by extending the lines, the program avoids modifying the plots and will not modify other parts that do not have fitting problems, ensuring that the features are not deformed after fitting repair. Secondly, by setting the tolerance value, the feature lines are reasonably extended and capture points that exceed the range are not added, ensuring that the repair range is within a reasonable error range and the repair accuracy is guaranteed.

[0065] In addition, assuming that there is another plot line that intersects with the extension line of the first feature line, then there are two capture points around the above-mentioned feature node. At this time, the feature node will only select the nearest capture point as the basis for the fit repair, and the other capture point does not participate in the fit repair here and can be regarded as an irrelevant capture point.

[0066] The embodiment of the present application also provides an automatic sleeve repair device, such as Figure 3 As shown, it includes an element processing module 10, an element conversion module 20, a search module 30, a capture module 40 and a repair module 50.

[0067] The element processing module 10 is used to analyze the cadastral data that needs to be matched and obtain a table of elements to be processed, wherein the cadastral data includes line elements and surface elements of the original land parcel and line elements and surface elements of the original land features;

[0068] The element conversion module 20 is used to convert the surface elements of the original land parcels to obtain land parcel lines, and convert the surface elements of the original features to obtain feature lines according to the data recorded in the table of elements to be processed;

[0069] A search module 30, for determining the intersection point of the parcel line adjacent to and closest to the feature line within a preset tolerance value;

[0070] A capture module 40, used for taking the intersection of the feature line and the land parcel line as a capture point when the land parcel line and the feature line do not overlap;

[0071] The repair module 50 is used to use the capture points and feature nodes to realize the overlap of the feature lines and the plot lines, and the feature nodes are the intersection points of the feature lines.

[0072] The present invention also provides a computer terminal, which includes a processor and a memory. The memory stores a computer program. When the computer program runs on the processor, the method for fitting and repairing ground objects in the above embodiment is executed.

[0073] The present invention also provides a readable storage medium storing a computer program. When the computer program is run on a processor, the method for fitting and repairing ground features in the above embodiment is executed.

[0074] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and structure diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in an alternative implementation, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the structure diagram and / or the flow chart, and the combination of boxes in the structure diagram and / or the flow chart, can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0075] In addition, the functional modules or units in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0076] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, 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, which is stored in a storage medium and includes several instructions for a computer device (which can be a smart phone, a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0077] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for repairing ground objects by fitting, characterized in that: include: Analyze the cadastral data that need to be matched and obtain the element table to be processed; The cadastral data includes line elements and surface elements of the original land parcel and line elements and surface elements of the original land features; According to the data recorded in the table of elements to be processed, the surface elements of the original land parcels are converted to obtain land parcel lines, and the surface elements of the original features are converted to obtain feature lines; Determine the intersection point of the land parcel line adjacent to and closest to the feature line within a preset tolerance value; When the land parcel line and the feature line do not overlap, the intersection of the feature line and the land parcel line is used as a capture point; Move the feature line so that the feature node coincides with the capture point closest to the feature line, so that the original feature surface and line element where the feature node is located coincides with the plot line where the capture point is located, and the feature node is the intersection point of the feature line and the feature line; The situation that the land parcel line and the feature line do not overlap includes that there is an overlap, gap or hanging relationship between the land parcel line and the feature line; When the land plot line and the feature line do not overlap, taking the intersection of the feature line and the land plot line as a capture point comprises: When the land parcel line and the feature line do not overlap, a capture point is obtained by using a topological intersection rule; The capture point includes the intersection point of the plot line and the extension line of the feature line and the endpoint of the plot line.

2. The method for repairing ground objects according to claim 1, characterized in that: The table of elements to be processed includes: The layers, colors, line types, extended codes, area elements and line elements of both the original parcel and the original features.

3. The method for repairing ground objects according to claim 1, characterized in that: The plot lines and feature lines are multiple line segments connected end to end.

4. The method for repairing ground objects according to claim 1, characterized in that: The tolerance value ranges from 1 to 5 centimeters.

5. The method for repairing ground objects according to claim 1, characterized in that: Determining the intersection point of the plot line adjacent to and closest to the feature line comprises: When the feature line and the plot line do not intersect, the feature line is extended within the tolerance value range so that the extended line of the feature line intersects with the closest and adjacent plot line to obtain an intersection point.

6. A ground feature fitting repair device, characterized in that: include: An element processing module is used to analyze the cadastral data that needs to be matched and processed to obtain an element table to be processed, wherein the cadastral data includes line elements and surface elements of the original land parcel and line elements and surface elements of the original land features; An element conversion module is used to convert the surface elements of the original land parcels to obtain land parcel lines, and to convert the surface elements of the original features to obtain feature lines according to the data recorded in the table of elements to be processed; A search module, used to determine the intersection point of the parcel line adjacent to and closest to the feature line within a preset tolerance value; A capture module, used for taking the intersection of the land feature line and the land parcel line as a capture point when the land parcel line and the land feature line do not overlap; A repair module is used to move the feature line so that the feature node coincides with the capture point closest to the feature line, so that the original feature surface and line element where the feature node is located coincides with the plot line where the capture point is located, and the feature node is the intersection point between the feature lines; The situation that the land parcel line and the feature line do not overlap includes that there is an overlap, gap or hanging relationship between the land parcel line and the feature line; When the land plot line and the feature line do not overlap, taking the intersection of the feature line and the land plot line as a capture point comprises: When the land parcel line and the feature line do not overlap, a capture point is obtained by using a topological intersection rule; The capture point includes the intersection point of the plot line and the extension line of the feature line and the endpoint of the plot line.

7. A computer terminal, characterized in that: The computer terminal comprises a processor and a memory, wherein the memory stores a computer program, and when the computer program is run on the processor, the method for fitting and repairing ground features according to any one of claims 1 to 5 is executed.

8. A readable storage medium, characterized in that: The device stores a computer program, which, when running on a processor, executes the method for fitting and repairing ground features as claimed in any one of claims 1 to 5.

Images