CN109558643B - Traffic scene modeling and model unitization method - Google Patents
Traffic scene modeling and model unitization method Download PDFInfo
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Abstract
The invention discloses a traffic scene modeling and model unitization method, which comprises the following steps: importing: packaging the CAD route map to the GIS, and leading the CAD route map into the CAD map; adding elevation: after the elevation points are collected, point elements are generated, then TIN is generated, and finally the generated TIN is converted into grids; surface interpolation: performing surface interpolation processing on the CAD matched on the map and the created TIN by using an 'interpolation Shape' tool, removing irrelevant elements in the CAD graph during difference, and reserving Polyline elements; generating a scene: and (4) finishing CAD derivation of geographic registration in the GIS system, and generating a scene by using the CAD. The invention carries out scene modeling through the City Engine with a good data interface with the ARCGIS platform and integrates the entity object information into the unique data bearing platform, thereby solving the problems that the dynamic information integration capability is poor, the scene information integration capability is weak for large scenes such as towns and the like, and the construction cost of the information platform is high in the prior art.
Description
Technical Field
The invention relates to the technical field of traffic three-dimensional scene modeling in a geographic information system and a City Engine, in particular to a traffic scene modeling and model unitization method.
Background
With the arrival of the big data era, the city planning and management need to rely on a digital information platform to classify and manage the real objects, the ARCGIS platform has a strong geographic information integration function, wherein the geographic coordinates and elevation information, the rock stratum geological information and the river strike information of the entity objects are covered, the entity objects comprise buildings, roads, bridges, tunnels and the like, the attribute information of the objects is integrated by constructing a 3D digital model of the objects, so that the digital management of the building and the traffic field can be achieved, the existing American Auto desk company can digitally model the building entity information and integrate the building entity information into a special data management platform for management, the invention has the advantages of high visualization degree, wide coverage of the integratable information, modularized model establishment process, but the defect of the invention is poor dynamic information integration capability, aiming at the problems that the scene information integration capability of large-scale scenes such as towns is weak, and the construction cost of an information platform is high, a traffic scene modeling and model unitization method is provided to solve the problems.
Disclosure of Invention
The invention aims to provide a traffic scene modeling and model unitization method, which has the advantages of low cost and strong information integration capability for building an informatization platform and solves the problems that the dynamic information integration capability in the prior art is poor, the scene information integration capability for large-scale scenes such as towns is poor and the construction cost of the informatization platform is high.
In order to achieve the purpose, the invention provides the following technical scheme: a traffic scene modeling and model unitization method comprises the following steps:
step 1: introducing: packaging the CAD route map to the GIS, and leading the CAD route map into the CAD map;
and 2, step: adding elevation: after the elevation points are collected, point elements are generated, then TIN is generated, and finally the generated TIN is converted into a grid;
and step 3: surface interpolation: performing surface interpolation processing on the CAD matched on the map and the created TIN by using an interpolation Shape tool, removing irrelevant elements in the CAD map and reserving Polyline elements during difference;
and 4, step 4: generating a scene: finishing CAD derivation of geographic registration in a GIS system, and generating a scene by using the CAD;
and 5: parameter modeling: realizing parameter modeling according to CGA modeling rules;
step 6: importing a scene: and communicating with the GIS to import the model scene.
Preferably, when a project is newly created in the ARCGIS PRO software in step 1, the encapsulated file is stored in the folder, newly building a map, a new scene, linking views in an insertion bar, synchronizing a 2D map and a 3D scene according to the center and the proportion, adding data, importing a CAD drawing to be packaged into the new map, defining projection in a CAD layer toolbar, changing spatial reference of a CAD file, carrying out geographic registration, adapting to a display range, adjusting a source layer to adapt to the current display range, matching a CAD drawing to a current map scene, respectively adding control points at corresponding points (dotted line circle frame range) on a CAD route map, then adding control points (map implementation circle frame part) at corresponding base map parts in a GIS, carrying out accurate registration and geographic processing on the CAD drawing and a newly-built map, and transferring the CAD to a geographic database by using a conversion tool: and storing the matched CAD graph, and converting the CAD graph into a GBD format by using a CAD-to-geographic database tool.
Preferably, in the step 2, specifically, for acquiring longitude and latitude coordinates and an elevation of the target area according to point coordinates obtained by actual official data, and storing the coordinates and the elevation into Excel, a point element is generated by using an "XY table to point" tool, a "TIN creation" tool is used on the basis of the point element to generate TIN, and an elevation source is generated on a map by using a "TIN to grid" tool on the basis of the created TIN.
Preferably, in step 4, the CAD data which is geographically registered in the GIS system is exported to a DWG format file, the file is imported into a modeling scene by using City Engine, and the CAD data is converted into a planar element type which can be edited by using element conversion.
Preferably, in the step 5, a CGA rule file is first imported, the road elements are edited according to the CGA rule, information such as the length and width of a road section and the number of lanes is adjusted, the height of a bridge pier, the distance between bridge piers and the like of the overpass object is adjusted according to the CGA rule, the element creation is completed, if the elements such as the bridge piers of the overpass part in the created model need to be modified, the elements can be selected, an attribute of the height of each bridge pier is set to be 0, the redundant bridge piers can be deleted, the elements are edited according to the actual situation of the road scene, the segmentation of the target requirement and the modification of each attribute value are completed until the requirement is met, and the entire scene is created.
Preferably, in step 6, specifically, the scene model that needs to be exported and saved is selected and saved in a designated folder, and the saved file is loaded to the ARCGIS PRO platform, that is, the import of the scene model is completed, and the model road segment is segmented and formed and includes the attribute information of the basis.
Compared with the prior art, the invention has the beneficial effects that: the traffic scene modeling and model unitization method has the advantages of low cost for building the informatization platform and strong information integration capability, has wide data integration coverage, can cover various aspects of buildings, traffic, safety, geology and the like, adds and modifies attribute data to various entity objects according to actual requirements, has larger scale of the scene model, can model the large-scale urban scene, has good data communication interface with the ARCGIS, can integrate very large data scale, the regular modeling scheme is more flexible, the data integration scheme is flexible and changeable, the City Engine can carry out regular modeling on different entity objects, particularly objects such as roads, bridges and tunnels in the traffic field, for a carrier, 3D scene models such as roads and overpasses can be generated in batch by adding attribute information of the roads, the road sections can be divided into road section units according to requirements, the roads are divided into the road section units so as to integrate different attribute information on each section of unit, the data management platform is highly visualized, different scene information can be displayed according to different requirements of users, the construction cost of the data platform is far lower than that of a mainstream information platform, the cost ratio of the data platform is higher for large-scale urban traffic data integration management projects, and the competition is better.
Detailed Description
The present invention will now be described in more detail by way of examples, which are given by way of illustration only and are not intended to limit the scope of the present invention in any way.
The invention provides a technical scheme that: a traffic scene modeling and model unitization method comprises the following steps:
step 1: introducing: packaging the CAD route map to the GIS, and leading the CAD route map into the CAD map;
and 2, step: adding elevation: after the elevation points are collected, point elements are generated, then TIN is generated, and finally the generated TIN is converted into grids;
and step 3: surface interpolation: performing surface interpolation processing on the CAD matched on the map and the created TIN by using an interpolation Shape tool, removing irrelevant elements in the CAD map and reserving Polyline elements during difference;
and 4, step 4: generating a scene: finishing CAD derivation of geographic registration in a GIS system, and generating a scene by using the CAD;
and 5: parameter modeling: realizing parameter modeling according to CGA modeling rules;
and 6: importing a scene: and communicating with the GIS to import the model scene.
The first embodiment is as follows:
importing: packaging the CAD route map to the GIS, and leading the CAD route map into the CAD map; adding elevation: after the elevation points are collected, point elements are generated, then TIN is generated, and finally the generated TIN is converted into a grid; surface interpolation: performing surface interpolation processing on the CAD matched on the map and the created TIN by using an interpolation Shape tool, removing irrelevant elements in the CAD map and reserving Polyline elements during difference; generating a scene: the method comprises the steps of finishing CAD derivation of geographic registration in a GIS system, and generating a scene by utilizing the CAD; parameter modeling: realizing parameter modeling according to CGA modeling rules; importing a scene: and communicating with the GIS to import the model scene.
The second embodiment:
in the first embodiment, the following steps are added:
specifically, in step 1, a project is newly created in ARCGIS PRO software, a packaged file is stored in a folder, a map and a scene are newly created in an insertion column, a view is linked, a 2D map and a 3D scene are synchronized according to a center and a proportion, data are added, a CAD drawing to be packaged is guided into the newly created map, projection is defined in a CAD drawing layer toolbar, spatial reference of the CAD file is changed, geographic registration is carried out, a display range is adapted, a source drawing layer is adjusted to be adapted to the current display range, the CAD drawing is matched to the current map scene, control points are respectively added to corresponding points (dotted line circular frame range) on a CAD route drawing, control points (map implementation circular frame part) are added to a corresponding base drawing part in a GIS, the CAD drawing and the newly created map are accurately registered and processed geographically, and the CAD drawing is converted to a geographic database by using a conversion tool: and storing the matched CAD graph, and converting the CAD graph into a GBD format by using a CAD-to-geographic database tool.
Introducing: packaging the CAD route map to the GIS, and leading the CAD route map into the CAD map; adding elevation: after the elevation points are collected, point elements are generated, then TIN is generated, and finally the generated TIN is converted into grids; surface interpolation: performing surface interpolation processing on the CAD matched on the map and the created TIN by using an 'interpolation Shape' tool, removing irrelevant elements in the CAD graph during difference, and reserving Polyline elements; generating a scene: finishing CAD derivation of geographic registration in a GIS system, and generating a scene by using the CAD; parameter modeling: realizing parameter modeling according to CGA modeling rules; importing a scene: and communicating with the GIS to import the model scene.
Example three:
in the second embodiment, the following steps are added:
in step 2, specifically, according to point coordinates obtained by actual official data, in order to acquire longitude and latitude coordinates and elevations of a target area, storing the longitude and latitude coordinates and the elevations into Excel, generating point elements by using an XY table to point conversion tool, generating TIN by using a TIN creation tool on the basis of the point elements, and generating an elevation source on a map by using a TIN to grid conversion tool on the basis of the created TIN. Introducing: packaging the CAD route map to the GIS, and leading the CAD route map into the GIS; adding elevation: after the elevation points are collected, point elements are generated, then TIN is generated, and finally the generated TIN is converted into a grid; surface interpolation: performing surface interpolation processing on the CAD matched on the map and the created TIN by using an interpolation Shape tool, removing irrelevant elements in the CAD map and reserving Polyline elements during difference; generating a scene: finishing CAD derivation of geographic registration in a GIS system, and generating a scene by using the CAD; parameter modeling: realizing parameter modeling according to CGA modeling rules; importing a scene: and communicating with the GIS to import the model scene.
Example four:
in the third embodiment, the following steps are added:
in step 4, the CAD data after geographic registration in the GIS system is exported to a DWG format file, the file is imported into a modeling scene by using City Engine, and the CAD data is converted into a plane element type for editing by using element conversion.
Introducing: packaging the CAD route map to the GIS, and leading the CAD route map into the GIS; adding elevation: after the elevation points are collected, point elements are generated, then TIN is generated, and finally the generated TIN is converted into grids; surface interpolation: performing surface interpolation processing on the CAD matched on the map and the created TIN by using an interpolation Shape tool, removing irrelevant elements in the CAD map and reserving Polyline elements during difference; generating a scene: finishing CAD derivation of geographic registration in a GIS system, and generating a scene by using the CAD; parameter modeling: realizing parameter modeling according to CGA modeling rules; importing a scene: and communicating with the GIS to import the model scene.
Example five:
in the fourth example, the following steps were added:
in step 5, specifically, a CGA rule file is imported, road elements are edited according to CGA rules, information such as length and width of a road section, number of lanes and the like is adjusted, the height of piers, the distance between the piers and the like of the overpass object are adjusted according to the CGA rules, element creation is completed, if the elements such as the piers of the overpass part in the created model need to be modified, the elements can be selected, one attribute of the pier height is set to be 0, redundant piers can be deleted, the elements are edited according to the actual situation of a road scene, segmentation of target requirements and modification of each attribute value are completed until the requirements are met, and the creation of the whole scene is completed.
Importing: packaging the CAD route map to the GIS, and leading the CAD route map into the GIS; adding elevation: after the elevation points are collected, point elements are generated, then TIN is generated, and finally the generated TIN is converted into a grid; surface interpolation: performing surface interpolation processing on the CAD matched on the map and the created TIN by using an 'interpolation Shape' tool, removing irrelevant elements in the CAD graph during difference, and reserving Polyline elements; generating a scene: finishing CAD derivation of geographic registration in a GIS system, and generating a scene by using the CAD; parameter modeling: realizing parameter modeling according to CGA modeling rules; importing a scene: and communicating with the GIS to import the model scene.
Example six:
in example five, the following procedure was added:
in step 6, specifically, the scene model which needs to be exported and stored is selected and stored in a designated folder, and the stored file is loaded to the ARCGIS PRO platform, that is, the import of the scene model is completed, and the model road segment is segmented and formed and contains the attribute information of the basis.
Importing: packaging the CAD route map to the GIS, and leading the CAD route map into the CAD map; adding elevation: after the elevation points are collected, point elements are generated, then TIN is generated, and finally the generated TIN is converted into grids; surface interpolation: performing surface interpolation processing on the CAD matched on the map and the created TIN by using an interpolation Shape tool, removing irrelevant elements in the CAD map and reserving Polyline elements during difference; generating a scene: the method comprises the steps of finishing CAD derivation of geographic registration in a GIS system, and generating a scene by utilizing the CAD; parameter modeling: realizing parameter modeling according to CGA modeling rules; importing a scene: and communicating with the GIS to import the model scene.
In conclusion: the traffic scene modeling and model unitization method carries out scene modeling through the City Engine with a good data interface with the ARCGIS platform and integrates entity object information into a unique data bearing platform, solves the problems that the dynamic information integration capability of the prior art is poor, the scene information integration capability of large-scale scenes such as towns is weak, and the construction cost of the information platform is high, has the advantages of low construction cost and strong information integration capability of the information platform, has wide data integration coverage, can cover various aspects such as buildings, traffic, safety, geology and the like, adds and modifies attribute data to various entity objects according to actual requirements, has larger scene model scale, can model large-scale scenes of large cities by the City Engine, and has a good data communication interface with the ARCGIS, the City Engine can perform regularized modeling on different entity objects, particularly objects such as roads, bridges, tunnels and the like in the traffic field, and can generate 3D scene models such as roads, overpasses and the like in batch by adding attribute information of the roads for carriers, unit division can be performed on the roads with higher requirements, the roads are divided into road section units, different attribute information is integrated on each section of unit, the data management platform is highly visualized, different scene information can be displayed according to different requirements of users, the construction cost of the data platform is far lower than that of a mainstream information platform, the cost ratio of the data to the cost of an integrated management project of large-scale urban traffic data is higher, and the competition is better.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A traffic scene modeling and model unitization method is characterized in that: the method comprises the following steps:
step 1: introducing: packaging the CAD route map to the GIS, and leading the CAD route map into the GIS; specifically, a project is newly built in ARCGIS PRO software, a packaged file is stored in a folder of the file, a map and a scene are newly built in an insertion column, a view is linked, a 2D map and a 3D scene are synchronized according to the center and the proportion, data are added, a CAD drawing to be packaged is led into the newly built map, projection is defined in a CAD drawing layer toolbar, the spatial reference of the CAD file is changed, geographic registration is carried out, the display range is adapted, a source drawing layer is adjusted to be adapted to the current display range, the CAD drawing is matched with the current map scene, control points are respectively added to corresponding points on a CAD route drawing, control points are added to corresponding base drawing parts in a GIS, the CAD drawing and the newly built map are accurately registered, geographic processing is carried out, and the CAD is transferred to a geographic database by using a conversion tool: storing the matched CAD graph, and converting the CAD graph into a GBD format by using a tool from CAD to geographic database;
step 2: adding elevation: after the elevation points are collected, point elements are generated, then TIN is generated, and finally the generated TIN is converted into a grid;
and step 3: surface interpolation: performing surface interpolation processing on the CAD matched on the map and the created TIN by using an 'interpolation Shape' tool, removing irrelevant elements in the CAD graph during difference, and reserving Polyline elements;
and 4, step 4: generating a scene: finishing CAD derivation of geographic registration in a GIS system, and generating a scene by using the CAD; firstly, exporting CAD (computer-aided design) which finishes geographic registration in a GIS (geographic information system) to a DWG (discrete wavelet transform) format file, importing the file into a modeling scene by using a City Engine, and converting CAD data into a plane element type for editing by using element conversion;
and 5: parameter modeling: realizing parameter modeling according to CGA modeling rules;
and 6: importing a scene: and communicating with the GIS to import the model scene.
2. The traffic scene modeling and model unitization method according to claim 1, wherein: and 2, specifically, taking point coordinates obtained according to actual official data as longitude and latitude coordinates and elevations of the acquired target area, storing the acquired point coordinates into Excel, generating point elements by using an XY table to point conversion tool, generating TIN by using a TIN creation tool on the basis of the point elements, and generating an elevation source on a map by using a TIN to grid conversion tool on the basis of the created TIN.
3. The traffic scene modeling and model unitization method according to claim 1, wherein: and 5, specifically, importing a CGA rule file, editing road elements according to the CGA rule, adjusting the length and width of a road section and the information of the number of lanes, adjusting the height of piers and the distance between the piers of an overpass object, and completing element creation, wherein if the elements of the overpass part of the constructed model need to be modified, the elements can be selected, an attribute of the pier height is set to be 0, so that redundant piers can be deleted, the elements are edited according to the actual condition of a road scene, and the segmentation of target requirements and the modification of various attribute values are completed until the requirements are met and the whole scene is created.
4. The traffic scene modeling and model unitization method according to claim 1, wherein: in the step 6, the scene model to be exported and stored is selected and stored in the designated folder, and the stored file is loaded to the ARCGIS PRO platform, so that the import of the scene model is completed, and the model road segment is segmented and formed and contains the attribute information of the basis.
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| CN111986311A (en) * | 2020-08-06 | 2020-11-24 | 山东金东数字创意股份有限公司 | Template data conversion system and method |
| CN112861384B (en) * | 2021-02-10 | 2023-05-05 | 西南交通大学 | Three-dimensional model construction method of electrostatic precipitator based on CATIA |
| CN113553634B (en) * | 2021-06-28 | 2024-07-05 | 通号城市轨道交通技术有限公司 | Equipment kilometer post import and export method and device, electronic equipment and storage medium |
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