CN108304660B - Automatic processing method for mapping real estate - Google Patents
Automatic processing method for mapping real estate Download PDFInfo
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- CN108304660B CN108304660B CN201810110187.9A CN201810110187A CN108304660B CN 108304660 B CN108304660 B CN 108304660B CN 201810110187 A CN201810110187 A CN 201810110187A CN 108304660 B CN108304660 B CN 108304660B
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Abstract
The invention relates to an automatic processing method for mapping real estate, which completes the processing of cadastre data and house data in the real estate data processing process and realizes the automatic falling of houses. The invention comprises cadastral data processing and house data processing; during cadastral data processing, original cadastral data are converted into dwg format, land parcel and house are generated in batches, and attribute hooking, data quality inspection and cadastral result automatic output are carried out; when house data is processed, data is preprocessed, then hierarchical information is checked, hierarchical plots are selected, a corresponding hierarchical graph is generated by taking each plot as a unit, the whole graph is scanned to accumulate each layer and each area, and finally a corresponding house information survey table and a house hierarchical user distribution graph are generated.
Description
Technical Field
The invention belongs to the building surveying and mapping technology, in particular to an automatic processing method for real estate surveying and mapping.
Background
The real estate data processing work has the characteristics of multiple involved departments, difficult data processing, high requirement on operators and the like, and the processing process requires the operators to have certain understanding on cadastral data processing and real estate data processing.
In the process of developing the rural cadastre, the mutual relationship between the rural house and the land parcel needs to be solved, the land parcel problem of the good house needs to be solved, the land relation needs to be processed, and the land ownership problem needs to be checked. On the basis of legal ownership, clear boundary address and accurate area, the investigation work of the above-ground house and the affiliated facilities thereof needs to be synchronously carried out.
The actual operation process can be divided into two stages: the first stage is cadastral data processing and the second stage is house data processing. For the first stage, the workers currently use older versions of cadastral data processing software, which can perform part of the work, but due to the modification of the cadastral standard, it is difficult to have a complete set of processing methods for the handed-in cadastral data. Most work teams manually process the handed-in cadastral data, and the efficiency is very low. Aiming at the second stage, no corresponding software can be processed in the industry at present, an operation team only can manually output a house layering diagram according to house information in layers, during actual operation, the operation team generally judges the layer number and the structure of a house according to the drawing notes by using a cadastral general diagram in the first stage, then the house is manually layered, and the layered quality is directly related to the accuracy of the final calculated area. Because the process has higher requirements on the interpretation experience of operators, errors are easy to occur, all the subsequent steps are all wrong as long as the layering is wrong, the precision is difficult to guarantee, and the operation efficiency is also difficult to improve.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an automatic processing method of real estate mapping, which adopts an automatic processing flow to complete the processing of cadastral data and house data in the real estate data processing process and realize the automatic falling of houses.
The invention is realized by adopting the following technical scheme: the automatic processing method of real estate mapping comprises cadastral data processing and house data processing; the cadastral data processing comprises the following steps:
s11, data conversion: automatically converting original cadastral data into data in a dwg format;
s12, parcel and house batch generation: updating and measuring the changed parts in the original cadastral data, investigating ownership information of the land parcel and the house, drawing a picture according to investigation information obtained by updating and measuring, and recording the investigation information; forming a range line during drawing of the drawing, and generating a corresponding house or parcel according to the range line;
s13, attribute hanging: inputting the generated attribute data of the land parcel and the house into an EXCEL template, and then hanging the attribute and the corresponding graph according to the associated field to finish attribute input;
s14, data quality inspection: adopting a data quality inspection rule, checking errors appearing in data in batches, and giving a solution;
s15, automatically outputting cadastral results: automatically generating surveying and mapping result data according to cadastral data;
the house data processing comprises the following steps:
s21, preprocessing data: after selecting a house, extracting basic attribute information of the house, wherein the basic attribute information comprises a building number, a house structure, a layer number and an area coefficient;
s22, checking hierarchical information: the preprocessed data are checked, error information is output if the following conditions occur, and positioning information and modification opinions are given: 1) four basic attribute information of a building number, a house structure, a floor number and an area coefficient cannot be found; 2) the building number is the same, and the house structure is different except for the balcony; 3) the structure of the house corresponding to the building number is a balcony;
s23, automatic layering: selecting a layered parcel, judging whether the parcel has a layered graph or not, if so, directly opening the corresponding layered graph, and if not, prompting to select a house needing to participate in layering; setting information, including real estate unit number, authorized person information and project name, and automatically extracting the set information from parcel; reading the information of each building by taking the building as a unit, and establishing a hierarchical relationship of a building structure-floor-entity; selecting one of the following layering modes: merging the same floors or not merging the same floors, and generating a corresponding hierarchical graph by taking each floor as a unit;
s24, area calculation: scanning entities of the whole hierarchical diagram, and respectively accumulating and calculating the area of each layer and each block;
s25, outputting a result: and generating a corresponding house information survey table and a house layered household graph according to the result data of the house layering.
In step S23, the layer-building process uses an automatic face-building algorithm to reconstruct faces according to the range line and the house layer-building line. Reconstructing the facets includes the steps of:
breaking all the range lines participating in the construction surface at nodes and intersection points to generate a node set and an edge set;
removing nodes and edges repeatedly recorded in the node set and the edge set;
establishing a topological relation between nodes and edges, establishing an association relation according to the coordinate comparison between the nodes and the two end points of the edges, finding all the edges connected with the nodes through each node according to the association relation, and finding the nodes connected with the nodes through the edges, thereby establishing the topological relation between the nodes and the edges;
searching a structural plane, starting from any node, obtaining an edge connected with the node, obtaining an included angle between the edge connected with the node and an X axis by taking the node as an origin, taking the edge with the minimum included angle as a next searching edge, and searching the next node; obtaining an edge connected with the next node at the next node, excluding the searched edge, obtaining an included angle between the edge connected with the next node and an X axis by taking the next node as an original point, taking the edge with the minimum included angle as the next searching edge, searching the next node, and so on until the starting point is searched again or the next node cannot be found, and finishing the searching to obtain a configuration surface;
filtering surfaces, namely excluding the structural surfaces with clockwise node sequence, filtering redundant repeated structural surfaces, and only reserving one repeated structural surface; the redundant facets of the repetition have the same nodes, differing only in origin.
Compared with the prior art, the invention has the following beneficial effects:
1. the processing of cadastral data and house data in the real estate data processing process is completed by adopting an automatic processing flow, so that the automatic falling of houses is realized; compared with the traditional operation flow, the method improves the efficiency of cadastral data generation, attribute editing, quality inspection and achievement generation, provides a new idea for rural house data processing, and realizes the unity of houses and lands.
2. By adopting the method to layer the house, not only the operation efficiency is greatly improved, but also the accuracy of the layering is greatly improved compared with the manual operation; the area calculation is more accurate, and the problems of calculation omission, repeated calculation and the like in manual processing are avoided; the automatic output of the house achievements is more multiplied than the manual processing efficiency, and the complete consistency of report data and graphs can be ensured.
Drawings
FIG. 1 is a data processing flow diagram of the mapping of the present invention;
FIG. 2 is a schematic diagram of a constellation of facets before a range line is broken;
FIG. 3 is a broken view of a range line of a build;
FIG. 4 is a schematic diagram of a process for searching facets;
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Examples
On the basis of summarizing the difficult problems in the rural real estate surveying and mapping process, the method provides an automatic processing method which mainly comprises a cadastral data processing part and a house data processing part.
1. Cadastral data processing part
1.1 data conversion: the actual operation of the cadastral data processing part is generally updated on the basis of the existing cadastral database, the original cadastral data are mostly in the shp format, and the method provides an automatic reading part, can conveniently and automatically convert the space and attribute data of the shp into the dwg format, and is convenient for the next use.
1.2, batch generation of parcel and house: for the changed part in the original cadastral data, the job team updates and measures the changed part, investigates the information of the local area, the property of the house and the like, performs drawing by software such as AutoCAD according to investigation information obtained by updating and measuring, and records the investigation information in the drawing or the EXCEL; and forming a range line during drawing of the drawing, and generating a corresponding house or parcel according to the range line formed during drawing of the drawing.
1.3 attribute hooking: the method provides a standard data entry EXCEL template, so that a user can quickly complete entry of attribute data by relying on the powerful data entry function of the EXCEL, and then automatically hang attributes and corresponding graphs according to the associated fields of land codes, house real estate unit numbers and the like to complete attribute entry.
1.4 data quality inspection: the method provides a series of data quality inspection rules, comprises inspection items of graphic attributes and topological relations, can quickly inspect errors such as repeated nodes, repeated parcel numbers, parcel or house overlapping and the like in the data in batches, and provides solution opinions.
1.5 cadastral achievement automatic output: the cadastral part generally needs surveying and mapping result data such as a drafts of the parcel land, a map of the parcel land, a cadastral questionnaire and the like, and the cadastral part is the part which takes the longest time for most of the working teams. The method provides a batch production result part, and can automatically produce the surveying and mapping result data according to cadastral data without manual intervention basically.
2. House data processing part
2.1 data preprocessing: later automatic layering needs: the basic properties of the four houses are the building number, the house structure, the floor number and the area coefficient; in order to ensure that the data can be automatically layered, preprocessing is added, after a house is selected, the basic attribute information is automatically extracted, and if the extraction fails, a worker is required to input the basic attribute information and other attribute information. This process is repeated until all the houses have been pre-processed.
2.2 hierarchical information checking: checking the preprocessed data in the previous step, if the following conditions occur: 1) four basic attribute information of a building number, a house structure, a floor number and an area coefficient cannot be found; 2) the building numbers are the same, and the house structures (except balconies) are different; 3) the structure of the house corresponding to the building number is a balcony; in the three cases, error information is output to a window for prompting, positioning information and modification opinions are visually given, and the step (2.2) is repeated until all data passes the hierarchical information check. The procedure for giving location information and modifying opinions is as follows: after the hierarchical information inspection, error descriptions are listed on an error window for error data, and each line description is associated with the actual element of the drawing by an associated value, so that the relation between the error descriptions and the corresponding elements can be reflected intuitively.
2.3 automatic layering: and 2.31) selecting a layered parcel, judging whether the parcel has a layered diagram or not, and directly opening the corresponding layered diagram if the layered diagram exists. If not, prompting to select the house needing to participate in the hierarchy, and paying attention to the house inside the general selection parcel. Step 2.32) some information is set, including real estate unit number, authorized person information, project name and the like, the method can automatically extract the information from the parcel, and if the extraction fails, the information needs to be input by an operator. Step 2.33), after the steps are passed, the method reads the information of each building by taking the building as a unit, and establishes the hierarchical relationship of the structure- > floor- > entity as the basis of the next step. Step 2.34) layering includes two ways: merging the same floors or not merging the same floors, selecting to merge the same floors, automatically merging the floors with the same hierarchical plan into one floor during the hierarchical process, and displaying the floors as a plurality of floors only; the option is not to merge the same floors, and all floors are listed separately when layered. And the house is automatically layered and used as data of the subsequent steps. After the steps, the method generates the corresponding hierarchical graph by taking each parcel as a unit.
The step 2.34) layering process involves reconstructing faces based on existing range lines and house layering lines, where an automatic face construction algorithm is used. The method comprises the following steps:
and 2.341, breaking the lines participating in the configuration, namely breaking all the range lines participating in the configuration at the nodes and the intersection points to generate a node set and an edge set. These sets will have duplicate records at the common edges and common nodes. After the brick-house and brick-two house shown in fig. 2 are broken, nodes a to F, edges AB, BC, CD, DA, BE, EF, CF are generated, where B, C is a common node and BC is a common edge, and the occurrence is twice, as shown in fig. 3.
And 2.342, removing repeated nodes and edges, judging repeated nodes directly according to the node coordinates, and comparing the coordinates of the nodes at the beginning and the end to judge repeated edges. Eventually all nodes and all edges should meet the requirement of no duplication. The duplicate B, C nodes and BC edges are removed from fig. 3 above, thereby ensuring that there is only one record for all records.
And 2.343, establishing a topological relation between the nodes and the edges, establishing an association relation according to the coordinate comparison between the nodes and the two end points of the edges, finding all the edges connected with the nodes through each node according to the association relation, and finding the nodes connected with the nodes through the edges, thereby establishing the topological relation between the nodes and the edges.
And 2.344, searching a structural plane, starting from any node A, obtaining edges AB and AD connected with A, obtaining included angles alpha AB and alpha AD between the AB and AD and an X axis by taking the A as an original point, and taking the edge with the minimum included angle as the next searching edge, so as to search a point B. Edges BA, BC, BE are obtained at point B, with BA already searched and therefore excluded, leaving a minimum angle α BE, and point E is searched. And so on, until the point a (i.e. the starting point) is searched again or the next node cannot be found, the search is ended, and the facet ABEFCD is obtained.
Step 2.345, surface filtering, and searching all the nodes from A to F according to the method in the previous step to obtain: the ABEFCD, BEFCDA, CFEB, CBAD, DABEFC, EFCDAB and FCDABE have 7 polygons in total, obviously, many faces are redundant to repeat and need to be filtered, the searched polygons (namely, facets) need to meet the requirement of node anticlockwise, therefore, the node sequence of the CFEB and CBAD facets is clockwise excluded, the remaining ABEFCD, BEFCDA, DABEFC, EFCDAB and FCDABE facets are actually the same face, have the same nodes, but have different starting points, one repeated facet is reserved, and finally the combined house roof ABEFCD can be obtained.
2.4 area calculation: the area calculation can be carried out, the entity of the whole map of the hierarchical map is scanned, and the area of each layer and each block are respectively calculated in an accumulated mode.
2.5, outputting results: and generating a corresponding house information survey table and a house layered household graph according to the result data of the house layering.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (8)
1. The automatic processing method of the real estate mapping is characterized by comprising cadastral data processing and house data processing; the cadastral data processing comprises the following steps:
s11, data conversion: automatically converting original cadastral data into data in a dwg format;
s12, parcel and house batch generation: updating and measuring the changed parts in the original cadastral data, investigating ownership information of the land parcel and the house, drawing a picture according to investigation information obtained by updating and measuring, and recording the investigation information; forming a range line during drawing of the drawing, and generating a corresponding house or parcel according to the range line;
s13, attribute hanging: inputting the generated attribute data of the land parcel and the house into an EXCEL template, and then hanging the attribute and the corresponding graph according to the associated field to finish attribute input;
s14, data quality inspection: adopting a data quality inspection rule, checking errors appearing in data in batches, and giving a solution;
s15, automatically outputting cadastral results: automatically generating surveying and mapping result data according to cadastral data;
the house data processing comprises the following steps:
s21, preprocessing data: after selecting a house, extracting basic attribute information of the house, wherein the basic attribute information comprises a building number, a house structure, a layer number and an area coefficient;
s22, checking hierarchical information: the preprocessed data are checked, error information is output if the following conditions occur, and positioning information and modification opinions are given: 1) four basic attribute information of a building number, a house structure, a floor number and an area coefficient cannot be found; 2) the building number is the same, and the house structure is different except for the balcony; 3) the structure of the house corresponding to the building number is a balcony;
s23, automatic layering: selecting a layered parcel, judging whether the parcel has a layered graph or not, if so, directly opening the corresponding layered graph, and if not, prompting to select a house needing to participate in layering; setting information, including real estate unit number, authorized person information and project name, and automatically extracting the set information from parcel; reading the information of each building by taking the building as a unit, and establishing a hierarchical relationship of a building structure-floor-entity; selecting one of the following layering modes: merging the same floors or not merging the same floors, and generating a corresponding hierarchical graph by taking each floor as a unit;
s24, area calculation: scanning entities of the whole hierarchical diagram, and respectively accumulating and calculating the area of each layer and each block;
s25, outputting a result: generating a corresponding house information survey table and a house layered household graph according to the result data of the house layering;
in step S23, an automatic face-constructing algorithm is adopted in the layering process, and face reconstruction is carried out according to a building range line and a house layering line; the reconstruction surface comprises the following steps:
breaking all the range lines participating in the construction surface at nodes and intersection points to generate a node set and an edge set;
removing nodes and edges repeatedly recorded in the node set and the edge set;
establishing a topological relation between nodes and edges, establishing an association relation according to the coordinate comparison between the nodes and the two end points of the edges, finding all the edges connected with the nodes through each node according to the association relation, and finding the nodes connected with the nodes through the edges, thereby establishing the topological relation between the nodes and the edges;
searching a structural plane, starting from any node, obtaining an edge connected with the node, obtaining an included angle between the edge connected with the node and an X axis by taking the node as an origin, taking the edge with the minimum included angle as a next searching edge, and searching the next node; obtaining an edge connected with the next node at the next node, excluding the searched edge, obtaining an included angle between the edge connected with the next node and an X axis by taking the next node as an original point, taking the edge with the minimum included angle as the next searching edge, searching the next node, and so on until the starting point is searched again or the next node cannot be found, and finishing the searching to obtain a configuration surface;
filtering surfaces, namely excluding the structural surfaces with clockwise node sequence, filtering redundant repeated structural surfaces, and only reserving one repeated structural surface; the redundant facets of the repetition have the same nodes, differing only in origin.
2. The method according to claim 1, wherein in step 23, the same floor is selected to be merged, and the floors with the same floor plan are merged into one floor in the layering process, and only a plurality of floors are displayed; the option is not to merge the same floors, and all floors will be listed separately when layered.
3. The method of claim 1, wherein the results data of the mapping in step 15 includes a land parcel draft, a land parcel map, and a cadastral questionnaire.
4. The method of claim 1, wherein the error of step 14 comprises a duplicate node, a duplicate parcel number, a parcel, or an overlap of a house present in the data.
5. The automated real estate mapping process of claim 1 wherein the associated fields of step 13 include a parcel code and a house real estate unit number.
6. The method of claim 1, wherein the property data of step 13 includes obligee basic information, four-to information.
7. The automated real estate mapping process of claim 1 wherein the native cadastral data is in the. shp format.
8. The method of claim 1, wherein the process of providing location information and modification comments comprises: after the hierarchical information check, the error description is listed on the error window by the error data, and each row description and the actual element of the drawing have an associated value for association.
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| CN110427507A (en) * | 2019-07-23 | 2019-11-08 | 武昌理工学院 | A kind of real estate survey and mapping processing method |
| CN110569626B (en) * | 2019-10-28 | 2023-04-07 | 云南瀚哲科技有限公司 | CAD house type graph batch plotting method based on data sheet |
| CN110889222B (en) * | 2019-11-27 | 2023-06-02 | 重庆宝图科技发展有限公司 | Real estate mapping method and system based on graphic method and analytic method |
| CN111369219B (en) * | 2020-03-05 | 2023-05-12 | 贵州申云科技有限公司 | Rural homestead and collective land mapping registration system |
| CN112163252A (en) * | 2020-08-31 | 2021-01-01 | 重庆宝图科技发展有限公司 | Method and system for landing real estate sketch |
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| PB01 | Publication | ||
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Address after: 2 / F, building C, 1029 Gaopu Road, Tianhe Software Park, Tianhe District, Guangzhou, Guangdong 510520 Applicant after: Ogilvy Technology Co.,Ltd. Address before: 2 / F, building C, 1029 Gaopu Road, Tianhe Software Park, Tianhe District, Guangzhou, Guangdong 510520 Applicant before: AUGUR INTELLIGENCE TECHNOLOGY (GUANGZHOU) Co.,Ltd. |
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