CN107103640B - Three-dimensional modeling method and system for urban underground pipeline - Google Patents
Three-dimensional modeling method and system for urban underground pipeline Download PDFInfo
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- CN107103640B CN107103640B CN201710173534.8A CN201710173534A CN107103640B CN 107103640 B CN107103640 B CN 107103640B CN 201710173534 A CN201710173534 A CN 201710173534A CN 107103640 B CN107103640 B CN 107103640B
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Abstract
The invention discloses a three-dimensional modeling method and a three-dimensional modeling system for urban underground pipelines. The method comprises the following steps: standardizing the obtained pipeline point data; extracting necessary fields from standard pipeline data; establishing an incidence relation among the necessary fields, the data dictionary and the rule model library; and generating the underground pipeline three-dimensional model according to the essential fields, the auxiliary field information and the incidence relation. By using the method and the system, the three-dimensional model of the underground pipeline can be rapidly and automatically generated, the workload of workers is reduced, the processing efficiency and the operation convenience are improved, and the method and the system also have the advantages of high flexibility and compatibility, effective management, display and application of a large number of three-dimensional models and the like. The three-dimensional modeling method and the system for the urban underground pipeline can be widely applied to the field of urban underground pipeline management.
Description
Technical Field
The invention relates to a three-dimensional model processing technology, in particular to a three-dimensional modeling method and a three-dimensional modeling system for urban underground pipelines.
Background
As for urban underground pipelines, the urban underground pipelines are important contents of urban construction and life lines for urban survival and development, and have the characteristics of large scale, wide range, various pipeline types, complex spatial distribution, large change, high growth speed, long formation time and the like. At present, the three-dimensional modeling mode of the urban underground pipeline mainly comprises the following steps: 1. manually drawing on three-dimensional modeling software such as 3DMAX, MAYA and the like according to a general survey drawing of the underground pipeline; 2. a three-dimensional pipeline model is established by combining a structural entity method and a close-range photogrammetry technology; 3. a three-dimensional model of the pipeline is constructed using three-dimensional laser LiDAR scanning techniques. However, these traditional underground pipeline three-dimensional modeling methods have a number of disadvantages, such as: 1. the traditional manual modeling is drawn on three-dimensional modeling software such as 3DMAX, MAYA and the like manually according to a general survey drawing of the underground pipeline, the method can cause the workload of workers to be greatly increased, when the mileage of the underground pipeline is long, time and labor are consumed, even hundreds of months can be consumed, and the modeling workers need the professional knowledge of the underground pipeline or are guided by the professionals at the same time, so that the modeling cost is high, and the professional requirements on the modeling workers are also high; 2. the method of combining the structure entity method and the close-range photogrammetry and the method of constructing the three-dimensional model of the pipeline by using the three-dimensional laser LiDAR scanning are effective for the disordered pipeline above the ground such as a chemical plant, a university workshop and the like, but are difficult to reconstruct the underground pipeline and cannot carry out large-scale pipeline management.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a three-dimensional modeling method for an urban underground pipeline, which can realize the rapid and automatic creation of three-dimensional pipeline models of various pipe network and pipe point devices of the urban underground comprehensive pipeline and greatly improve the efficiency and the operation convenience of the three-dimensional modeling of the underground pipeline.
The invention also aims to provide a three-dimensional modeling system for the urban underground pipeline, which can realize the rapid and automatic establishment of three-dimensional pipeline models of various pipe networks and pipe point equipment of the urban underground comprehensive pipeline and has high working efficiency and operation convenience.
The technical scheme adopted by the invention is as follows: a three-dimensional modeling method for urban underground pipelines comprises the following steps:
obtaining pipeline point data;
standardizing the obtained pipeline data to obtain standard pipeline data;
extracting necessary fields for constructing the three-dimensional model according to the standard pipeline point data;
establishing an incidence relation among the necessary fields, the data dictionary and the rule model library;
and generating the three-dimensional model of the underground pipeline according to the necessary fields, the auxiliary field information and the established association relation.
Further, the step of obtaining the standard pipeline point data after performing the normalization process on the obtained pipeline point data specifically includes:
judging whether the obtained pipeline point data contains necessary fields, if so, taking the currently obtained pipeline point data as standard pipeline point data; and otherwise, performing mapping processing on the obtained pipeline point data so as to establish a mapping relation between fields in the obtained pipeline point data and necessary fields stored in a standard database, and then taking the pipeline point data obtained after the mapping processing as the standard pipeline point data.
Further, the step of extracting necessary fields for constructing a three-dimensional model according to the standard pipeline point data specifically includes:
analyzing the standard pipeline data to obtain analyzed data;
necessary fields for constructing the three-dimensional model are extracted from the parsed data.
Further, a data quality inspection step is arranged between the steps of generating the underground pipeline three-dimensional model according to the necessary field information, the auxiliary field information and the established incidence relation, and the data quality inspection step comprises the following steps:
according to the quality inspection rule, the field value in the necessary field is subjected to type, value domain and spatial topological relation detection, and when the detection is passed, the next step is executed; otherwise, the necessary fields are repaired and then the next step is performed.
Further, the step of repairing the necessary field includes:
automatic or manual assignment of vacant fields among the necessary fields and automatic or manual repair of field values for representing spatial topological relationships.
The other technical scheme adopted by the invention is as follows: a system for three-dimensional modeling of an urban underground utility, the system comprising:
the acquisition unit is used for acquiring pipeline point data;
the data standardization unit is used for carrying out standardization processing on the obtained pipeline point data to obtain standard pipeline point data;
an extraction unit for extracting necessary fields for constructing a three-dimensional model according to standard pipeline point data;
the mapping relation establishing unit is used for establishing an incidence relation among the necessary fields, the data dictionary and the rule model library;
and the three-dimensional modeling unit is used for generating the underground pipeline three-dimensional model according to the necessary field, the auxiliary field information and the established incidence relation.
Further, the data normalization unit is specifically configured to determine whether the obtained pipeline point data includes an essential field, and if yes, take the currently obtained pipeline point data as standard pipeline point data; and otherwise, performing mapping processing on the obtained pipeline point data so as to establish a mapping relation between fields in the obtained pipeline point data and necessary fields stored in a standard database, and then taking the pipeline point data obtained after the mapping processing as the standard pipeline point data.
Further, the extraction unit includes:
the analysis module is used for analyzing the standard pipeline data to obtain analyzed data;
and the extraction module is used for extracting necessary fields for forming the three-dimensional model from the analyzed data.
Furthermore, a data quality inspection unit is arranged in front of the three-dimensional modeling unit and is used for detecting the type, value range and spatial topological relation of the field value in the necessary field according to a quality inspection rule, and when the detection is passed, a data processing flow corresponding to the three-dimensional modeling unit is executed; otherwise, the necessary fields are repaired, and then the data processing flow corresponding to the three-dimensional modeling unit is executed.
Further, the repairing the essential field includes:
automatic or manual assignment of vacant fields among the necessary fields and automatic or manual repair of field values for representing spatial topological relationships.
The invention has the beneficial effects that: the method of the invention can realize the purpose of rapidly and automatically generating the underground pipeline three-dimensional model, greatly reduce the workload of workers, bring the operation convenience for the workers, and realize the establishment of the underground pipeline three-dimensional model by utilizing the necessary fields in the pipeline point data, thus reducing the data input processing amount and improving the processing efficiency. In addition, the minimum unit of the generated three-dimensional model of the underground pipe network can be freely modified and set by setting the field value in the necessary modification field, so that the flexibility and compatibility of underground pipeline modeling are greatly improved, and effective management, display and application of a large number of three-dimensional models are facilitated.
The invention has the following beneficial effects: the system of the invention obtains the pipeline point data through the obtaining unit, then uses the data standardization unit to standardize the imported pipeline point data, adopts the extraction unit to extract the necessary field from the standard pipeline point data, adopts the mapping relation establishment unit to establish the incidence relation among the necessary field, the data dictionary and the rule model base, and finally uses the three-dimensional modeling unit to realize the establishment of the underground pipeline three-dimensional model according to the necessary field, the attached field information and the established incidence relation, thereby obtaining the system of the invention, which can realize the purpose of quickly and automatically generating the underground pipeline three-dimensional model, greatly reduce the workload of the staff, bring the operation convenience for the staff, and use the necessary field in the pipeline point data to realize the establishment of the underground pipeline three-dimensional model, thus reducing the data input processing amount, the processing efficiency is improved. In addition, the minimum unit of the generated three-dimensional model of the underground pipe network can be freely modified and set by setting the field value in the necessary modification field, so that the flexibility and compatibility of underground pipeline modeling are greatly improved, and effective management, display and application of a large number of three-dimensional models are facilitated.
Drawings
FIG. 1 is a flow chart illustrating the steps of a method for three-dimensional modeling of an urban underground pipeline according to the present invention;
FIG. 2 is a schematic flow chart of a three-dimensional modeling method for an urban underground pipeline according to an embodiment of the present invention;
FIG. 3 is a block diagram of a three-dimensional modeling system of an urban underground pipeline according to the present invention.
Detailed Description
Aiming at the problems of large workload, difficult model management and the like of the traditional underground pipe network three-dimensional modeling scheme, the invention provides a scheme capable of quickly and automatically realizing the three-dimensional modeling of the urban underground pipeline.
Embodiment 1, three-dimensional modeling method for urban underground pipeline
As shown in fig. 1, a three-dimensional modeling method for an urban underground pipeline includes the steps of:
obtaining pipeline point data; the pipeline point data is specifically two-dimensional standard various types of pipeline point data;
standardizing the obtained pipeline data to obtain standard pipeline data;
extracting necessary fields for constructing the three-dimensional model according to the standard pipeline point data;
establishing an incidence relation among the necessary fields, the data dictionary and the rule model library;
and generating the three-dimensional model of the underground pipeline according to the necessary fields, the auxiliary field information and the established association relation.
For the above three-dimensional modeling method for the urban underground pipeline, as shown in fig. 2, the implementation steps of the specific embodiment are as follows:
s101, importing and obtaining two-dimensional standard various types of pipeline point data, wherein the data formats of the imported and obtained pipeline point data include but are not limited to gdb, mdb, shpfile, access, excel and other data formats;
s102, standardizing the obtained pipeline point data to obtain standard pipeline point data;
the step S102 specifically includes:
judging whether the obtained pipeline point data contains necessary fields, if so, taking the currently obtained pipeline point data as standard pipeline point data; otherwise, the obtained pipeline point data is mapped, so that a mapping relation is established between fields in the obtained pipeline point data and necessary fields stored in a standard database, namely the fields in the obtained pipeline point data are mapped to the necessary fields in the standard database, and the pipeline point data can contain the necessary fields through the field mapping relation;
then, judging whether the pipeline point data obtained after the mapping processing contains all necessary fields, if so, taking the pipeline point data obtained after the current mapping processing as standard pipeline point data; if not, continuing to map the fields in the current pipeline point data to corresponding necessary fields in the standard database;
the standard database comprises a standard data template and a data dictionary, wherein the standard data template and the data dictionary are used for storing necessary fields of pipeline point data, specifically, the necessary fields of the pipeline point data stored in the standard database comprise necessary fields of the pipeline data and necessary fields of the pipeline point data, the necessary fields of the pipeline data comprise but are not limited to necessary fields of spatial position, pipe diameter, material, category, color, burial depth, application and the like, and the necessary fields of the pipeline point data comprise but are not limited to necessary fields of spatial position, category, burial depth, material and the like; each necessary field corresponds to a field value, and the value of the field value is used for judging so as to obtain corresponding attribute information, for example, for the necessary field of the category contained in the pipeline data, when the corresponding field value is 1, the pipeline is represented as a round pipe; in addition, for the necessary fields, the necessary fields are all attribute information of pipeline pipe points;
s103, extracting necessary fields for forming a three-dimensional model according to the standard pipeline point data;
the step S103 specifically includes:
s1031, analyzing the standard pipeline point data to obtain analyzed data, wherein the analyzed data comprises fields contained in the standard pipeline point data and attached field information, the fields contained in the standard pipeline data comprise but are not limited to pipe diameters, pipes, pipeline carriers, purposes, numbers, voltages, pipe ditch or ditch section sizes, lengths, burial depths, position information and the like of pipelines, and the fields contained in the standard pipeline point data comprise but are not limited to position coordinate information, burial depths, pipe diameters, pipes and the like of the pipelines;
s1032, extracting key parameter information of pipeline pipe points from the analyzed data, namely extracting necessary fields for forming a three-dimensional model, wherein the extracted necessary fields comprise necessary fields of pipelines and necessary fields of pipe points, the necessary fields of the pipelines comprise but are not limited to node coordinates, pipe diameters, pipes and the like, and the necessary fields of the pipe points comprise but are not limited to categories, node coordinates and the like;
s104, establishing an association relationship among the essential field, the data dictionary and the rule model library, namely a mapping relationship among the essential field, the data dictionary and the rule model library, for example, when the type field of the pipeline indicates that the pipeline is a round pipe, mapping is performed according to a field value corresponding to the essential field of the pipe diameter, a field value corresponding to the essential field of the color, a field value corresponding to the essential field of the material and a field value corresponding to the essential field of the node coordinate, so that pipeline elements in the rule model library for a three-dimensional environment are mapped, and therefore, during subsequent modeling, according to the mapping relationship, three-dimensional pipeline elements can be generated by taking the node coordinate as a central line, the pipe diameter as a radius and the color and the material as attributes;
s105, data quality inspection, specifically, according to quality inspection rules, performing type, value range and spatial topological relation detection on field values in the extracted essential fields, and executing the step S106 when the detection is passed; otherwise, automatically or manually assigning a vacant field in the essential field, and automatically or manually repairing a field value used for representing the spatial topological relation, for example, modifying the field value of the essential field with a height, and then executing step S106;
and S106, generating the underground pipeline three-dimensional model according to the essential field and the auxiliary field information which pass the quality inspection and the established association relation.
The contents of the above method embodiments are applicable to the following system embodiments.
Embodiment 2, three-dimensional modeling system of urban underground pipeline
As shown in fig. 3, a three-dimensional modeling system of a city underground pipeline, the system comprising:
an obtaining unit 401, configured to obtain pipeline point data;
a data normalization unit 402, configured to perform normalization processing on the obtained pipeline point data to obtain standard pipeline point data;
an extraction unit 403 for extracting necessary fields for constructing a three-dimensional model from the standard pipeline point data;
a mapping relationship establishing unit 404, configured to establish an association relationship between the necessary field, the data dictionary, and the rule model library;
and the three-dimensional modeling unit 405 is used for generating the underground pipeline three-dimensional model according to the necessary fields, the auxiliary field information and the established association relation. The acquisition unit, the data standardization unit, the extraction unit, the mapping relation establishment unit and the three-dimensional modeling unit can all be realized by adopting a processor.
As a further preferred implementation manner of the present system embodiment, the data normalization unit 402 is specifically configured to determine whether the obtained pipeline point data includes an essential field, and if yes, take the currently obtained pipeline point data as the standard pipeline point data; and otherwise, performing mapping processing on the obtained pipeline point data so as to establish a mapping relation between fields in the obtained pipeline point data and necessary fields stored in a standard database, and then taking the pipeline point data obtained after the mapping processing as the standard pipeline point data.
As a further preferred implementation manner of this system embodiment, the extracting unit 403 includes:
the analysis module is used for analyzing the standard pipeline data to obtain analyzed data;
and the extraction module is used for extracting necessary fields for forming the three-dimensional model from the analyzed data.
As a further preferred implementation manner of the embodiment of the present system, a data quality inspection unit is arranged in front of the three-dimensional modeling unit 405, and the data quality inspection unit is configured to detect a type, a value range, and a spatial topological relation of a field value in an essential field according to a quality inspection rule, and when the detection passes, execute a data processing flow corresponding to the three-dimensional modeling unit 405; otherwise, the necessary fields are repaired, and then the data processing flow corresponding to the three-dimensional modeling unit 405 is executed.
Further as a preferred implementation of this embodiment of the system, the repairing the necessary field includes:
automatic or manual assignment of vacant fields among the necessary fields and automatic or manual repair of field values for representing spatial topological relationships.
From the foregoing, the method and system of the present invention include the advantages of:
1. the three-dimensional module of the urban underground pipeline can be quickly and automatically established without involving excessive manual operation, the workload of workers is reduced, and the three-dimensional modeling efficiency and accuracy are improved;
2. the three-dimensional modeling of the underground pipeline is realized by adopting the parameterization modeling technology based on the necessary fields, the data input processing amount can be reduced, the processing efficiency is improved, the storage space is saved, the minimum unit of the generated three-dimensional model of the underground pipe network can be freely modified and set by setting and modifying the field values in the necessary fields, and the flexibility and the compatibility of the modeling of the underground pipeline are high;
3. the generated large number of three-dimensional models can be effectively managed, displayed and applied.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A three-dimensional modeling method for urban underground pipelines is characterized by comprising the following steps: the method comprises the following steps:
obtaining pipeline point data;
standardizing the obtained pipeline point data to obtain standard pipeline point data, which specifically comprises the following steps:
judging whether the obtained pipeline point data contains necessary fields, if so, taking the currently obtained pipeline point data as standard pipeline point data; otherwise, performing mapping processing on the obtained pipeline point data so as to establish a mapping relation between fields in the obtained pipeline point data and necessary fields stored in a standard database, and then taking the pipeline point data obtained after the mapping processing as the standard pipeline point data;
extracting necessary fields for constructing the three-dimensional model according to the standard pipeline point data;
establishing an incidence relation among the necessary fields, the data dictionary and the rule model library;
and generating the three-dimensional model of the underground pipeline according to the necessary fields, the auxiliary field information and the established association relation.
2. The three-dimensional modeling method of the urban underground pipeline according to claim 1, characterized in that: the step of extracting necessary fields for constructing a three-dimensional model according to the standard pipeline point data specifically comprises the following steps:
analyzing the standard pipeline data to obtain analyzed data;
necessary fields for constructing the three-dimensional model are extracted from the parsed data.
3. The three-dimensional modeling method of the urban underground pipeline according to claim 2, characterized in that: the method comprises the following steps of generating an underground pipeline three-dimensional model according to necessary fields, auxiliary field information and established incidence relations, wherein a data quality inspection step is arranged between the steps of generating the underground pipeline three-dimensional model, and comprises the following steps:
according to the quality inspection rule, the field value in the necessary field is subjected to type, value domain and spatial topological relation detection, and when the detection is passed, the next step is executed; otherwise, the necessary fields are repaired and then the next step is performed.
4. The three-dimensional modeling method for the urban underground pipeline according to claim 3, characterized in that: the step of repairing the necessary field includes:
automatic or manual assignment of vacant fields among the necessary fields and automatic or manual repair of field values for representing spatial topological relationships.
5. A three-dimensional modeling system of an urban underground pipeline is characterized in that: the system comprises:
the acquisition unit is used for acquiring pipeline point data;
the data normalization unit is used for judging whether the obtained pipeline point data contains necessary fields or not, and if yes, the currently obtained pipeline point data is used as the standard pipeline point data; otherwise, performing mapping processing on the obtained pipeline point data so as to establish a mapping relation between fields in the obtained pipeline point data and necessary fields stored in a standard database, and then taking the pipeline point data obtained after the mapping processing as the standard pipeline point data;
an extraction unit for extracting necessary fields for constructing a three-dimensional model according to standard pipeline point data; the mapping relation establishing unit is used for establishing an incidence relation among the necessary fields, the data dictionary and the rule model library;
and the three-dimensional modeling unit is used for generating the underground pipeline three-dimensional model according to the necessary field, the auxiliary field information and the established incidence relation.
6. The three-dimensional modeling system for the urban underground pipeline according to claim 5, wherein: the extraction unit includes:
the analysis module is used for analyzing the standard pipeline data to obtain analyzed data;
and the extraction module is used for extracting necessary fields for forming the three-dimensional model from the analyzed data.
7. The three-dimensional modeling system for the urban underground pipeline according to claim 6, wherein: a data quality inspection unit is arranged in front of the three-dimensional modeling unit and is used for detecting the type, value range and spatial topological relation of the field value in the necessary field according to a quality inspection rule, and when the detection is passed, a data processing flow corresponding to the three-dimensional modeling unit is executed; otherwise, the necessary fields are repaired, and then the data processing flow corresponding to the three-dimensional modeling unit is executed.
8. The system of claim 7, wherein: the repairing the essential field comprises:
automatic or manual assignment of vacant fields among the necessary fields and automatic or manual repair of field values for representing spatial topological relationships.
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| CN108388717A (en) * | 2018-02-08 | 2018-08-10 | 武汉智博创享科技股份有限公司 | A kind of method and device generating underground pipe network database model |
| CN108416842B (en) * | 2018-02-28 | 2022-03-11 | 四川益新工程勘察设计有限公司 | Urban three-dimensional integrated pipe network information management method |
| CN110727976B (en) * | 2018-07-16 | 2023-02-28 | 西安海平方网络科技有限公司 | MEP system generation method and device, computer equipment and storage medium |
| CN109087389B (en) * | 2018-07-27 | 2020-06-09 | 西南石油大学 | Underground pipeline automatic fine modeling method based on GPU (graphics processing Unit) programming |
| CN110135083A (en) * | 2019-05-20 | 2019-08-16 | 成都同飞科技有限责任公司 | A kind of three-dimensional pipe network automated construction method of included space attribute |
| CN110580385A (en) * | 2019-08-21 | 2019-12-17 | 南京博阳科技有限公司 | data processing method, device and equipment for underground pipeline and computer storage medium |
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