CN109558643B - A traffic scene modeling and model single method - Google Patents

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

A traffic scene modeling and model single method

technical field

The invention relates to the technical field of three-dimensional traffic scene modeling in a geographic information system and a City Engine, in particular to a traffic scene modeling and model singulation method.

Background technique

With the advent of the era of big data, urban planning and management need to rely on a digital information platform to classify and manage objects in reality. The ARCGIS platform has powerful geographic information integration functions, including geographic coordinates and elevation information of physical objects, rock formation geology information and river direction information, while the entity objects include buildings, roads, bridges and tunnels. At present, the unique American Auto desk company can digitally model building entity information and integrate it into a dedicated data management platform for management. The disadvantage is that the dynamic information integration ability is poor, the scene information integration ability for large-scale scenes such as towns is weak, and the construction cost of the information platform is high. Therefore, we propose a traffic scene modeling and model integration method. to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a traffic scene modeling and model singulation method, which has the advantages of low cost of building an information platform and strong information integration ability, and solves the problem that the dynamic information integration ability of the prior art is poor. The scene information integration capability of large-scale scenes is weak, and the cost of building an information platform is relatively high.

In order to achieve the above purpose, the present invention provides the following technical solutions: a traffic scene modeling and model singulation method, comprising the following steps:

Step 1: Import: package the CAD roadmap to GIS, first import the CAD map;

Step 2: Add elevation: After collecting elevation points, generate point elements, then generate TIN, and finally convert the generated TIN to raster;

Step 3: Surface interpolation: Use the "Interpolation Shape" tool to perform surface interpolation processing on the CAD matched on the map and the created TIN. When there is a difference, remove the irrelevant elements in the CAD image and keep the Polyline elements;

Step 4: Generate the scene: complete the CAD export of the georeferencing in the GIS system, and use the CAD to generate the scene;

Step 5: Parametric modeling: implement parametric modeling according to CGA modeling rules;

Step 6: Import the scene: Communicate with the GIS to import the model scene.

Preferably, in step 1, a new project is specifically created in the ArcGIS PRO software, and the packaged files will be saved in this folder. In the insert column, create a new map, create a new scene, link views, and convert the 2D map according to the center and scale. Synchronize with the 3D scene, add data, import the CAD map to be encapsulated into a new map, define the projection in the CAD layer toolbar, change the spatial reference of the CAD file, perform georeferencing, adapt to the display range, and adjust the source layer to make it Adapt to the current display range, match the CAD map to the current map scene, add control points to the corresponding points (dotted circle frame range) on the CAD route map, and then add control points to the corresponding base map part in the GIS (the map realizes the circle frame part) ), accurately register the CAD map with the new map, perform geoprocessing, and use the conversion tool to transfer the CAD to the geodatabase: save the matched CAD map, and use the "CAD to geodatabase" tool to convert it to GBD format .

Preferably, the point coordinates obtained in step 2 specifically according to the actual official data are to collect the latitude and longitude coordinates and elevation of the target area, and store them in Excel, and use the "XY table to point" tool to generate point elements, and in the point elements On the basis of , use the "Create TIN" tool to generate a TIN, and on the basis of the already created TIN, use the "TIN to Raster" tool to generate an elevation source on the map.

Preferably, in step 4, firstly, the georeferenced CAD in the GIS system is exported to a DWG format file, and the above file is imported into the modeling scene by using City Engine, and the CAD data is converted into a The types of flat features available for editing.

Preferably, in step 5, the CGA rule file is first imported, and the road elements are edited according to the CGA rule, and the length and width of the road section, the number of lanes and other information are adjusted, and the height of the piers and the spacing between the piers are adjusted for the overpass objects. , complete the element creation. If there are some elements such as piers of the interchange that need to be modified in the created model, you can select them and set the pier height attribute to 0, you can delete the redundant piers, according to the actual situation of the road scene Edit the elements, complete the segmentation required by the target and modify the value of each attribute, until the requirements are met and the overall scene creation is completed.

Preferably, in step 6, the scene model to be exported and saved is selected and saved to a specified folder, and the above saved file is loaded into the ArcGIS PRO platform, that is, the import of the scene model is completed, and the model road segment has been formed in sections , which contains its underlying attribute information.

Compared with the prior art, the beneficial effects of the present invention are: the present invention performs scene modeling and integrates entity object information into its unique data bearing platform through the City Engine having a good data interface with the ARCGIS platform, which solves the problem of existing problems. The technical dynamic information integration ability is poor. For large-scale scenes such as towns and other large-scale scenes, the scene information integration ability is weak, and the cost of building an information platform is high. This traffic scene modeling and model integration method has the cost of building an information platform. It has the advantages of low cost and strong information integration capability, and the data integration covers a wide range, covering construction, transportation, safety, geology, etc., and adding and modifying attribute data for various entity objects according to actual needs, the scale of the scene model is larger, City Engine can model large-scale city-scale scenarios, and has a good data communication interface with ArcGIS. It can integrate very large data scales. The rule-based modeling scheme is more flexible, and the data integration scheme is flexible and changeable. City Engine can target Different entity objects, especially the roads, bridges, tunnels and other objects in the traffic field, are modeled in a regularized manner, as the carrier. By adding the attribute information of the road, 3D scene models such as roads and interchanges can be generated in batches, and can be used as a carrier. It is more necessary to divide the road section into units, and divide the road into road unit units to integrate different attribute information for each segment unit. The data management platform is highly visualized, and can display different scene information according to different needs of users, and the cost of building the data platform is much lower. The cost of building a mainstream information platform is relatively high for large-scale urban traffic data integration management projects and is more competitive.

Detailed ways

The present invention will be described in more detail below by way of examples, which are merely illustrative and do not limit the scope of the present invention in any way.

The present invention provides a technical solution: a traffic scene modeling and model singulation method, comprising the following steps:

Step 1: Import: package the CAD roadmap to GIS, first import the CAD map;

Step 2: Add elevation: After collecting elevation points, generate point elements, then generate TIN, and finally convert the generated TIN to raster;

Step 3: Surface interpolation: Use the "Interpolation Shape" tool to perform surface interpolation processing on the CAD matched on the map and the created TIN. When there is a difference, remove the irrelevant elements in the CAD image and keep the Polyline elements;

Step 4: Generate the scene: complete the CAD export of the georeferencing in the GIS system, and use the CAD to generate the scene;

Step 5: Parametric modeling: implement parametric modeling according to CGA modeling rules;

Step 6: Import the scene: Communicate with the GIS to import the model scene.

Example 1:

Import: encapsulate the CAD route map to GIS, first import the CAD map; add elevation: after collecting the elevation points, generate point elements, then generate TIN, and finally convert the generated TIN to raster; surface interpolation: will match on the map CAD and the created TIN use the "Interpolation Shape" tool to perform surface interpolation processing. When the difference is reached, remove the irrelevant elements in the CAD image and keep the Polyline elements; Generate the scene: the CAD export of the georeferencing in the GIS system is completed, Use CAD to generate scenarios; parametric modeling: implement parametric modeling according to CGA modeling rules; import scenarios: communicate with GIS to import model scenarios.

Embodiment 2:

In Embodiment 1, the following steps are added:

In step 1, create a new project in ArcGIS PRO software, the packaged files will be saved in this folder, create a new map, create a new scene, link views in the insert column, synchronize the 2D map and 3D scene according to the center and scale, Add data, import the CAD map to be encapsulated into the new map, define the projection in the CAD layer toolbar, change the spatial reference of the CAD file, perform georeferencing, adapt to the display range, adjust the source layer to fit the current display range , match the CAD map to the current map scene, add control points to the corresponding points (dotted circle frame range) on the CAD route map, and then add control points to the corresponding base map part in the GIS (the map realizes the circle frame part), and add the CAD map Accurate registration with new maps, geoprocessing, and conversion tools to convert CAD to geodatabase: Save the matched CAD map, and use the "CAD to Geodatabase" tool to convert it to GBD format.

Import: encapsulate the CAD route map to GIS, first import the CAD map; add elevation: after collecting the elevation points, generate point elements, then generate TIN, and finally convert the generated TIN to raster; surface interpolation: will match on the map CAD and the created TIN use the "Interpolation Shape" tool to perform surface interpolation processing. When the difference is reached, remove the irrelevant elements in the CAD image and keep the Polyline elements; Generate the scene: the CAD export of the georeferencing in the GIS system is completed, Use CAD to generate scenarios; parametric modeling: implement parametric modeling according to CGA modeling rules; import scenarios: communicate with GIS to import model scenarios.

Embodiment three:

In embodiment two, add the following procedure:

In step 2, the point coordinates obtained according to the actual official data are to collect the latitude and longitude coordinates and elevation of the target area, and store them in Excel. Use the "XY table to point" tool to generate point elements. On the basis of point elements, use The "Create TIN" tool generates a TIN, and on the basis of the already created TIN, use the "TIN to Raster" tool to generate an elevation source on the map. Import: encapsulate the CAD route map to GIS, first import the CAD map; add elevation: after collecting the elevation points, generate point elements, then generate TIN, and finally convert the generated TIN to raster; surface interpolation: will match on the map CAD and the created TIN use the "Interpolation Shape" tool to perform surface interpolation processing. When the difference is reached, remove the irrelevant elements in the CAD image and keep the Polyline elements; Generate the scene: the CAD export of the georeferencing in the GIS system is completed, Use CAD to generate scenarios; parametric modeling: implement parametric modeling according to CGA modeling rules; import scenarios: communicate with GIS to import model scenarios.

Embodiment 4:

In embodiment three, add the following procedure:

In step 4, firstly, the georeferenced CAD in the GIS system is exported to a DWG format file, and the above file is imported into the modeling scene by using City Engine, and the CAD data is converted into a plane for editing by using element conversion. Feature type.

Import: encapsulate the CAD route map to GIS, first import the CAD map; add elevation: after collecting the elevation points, generate point elements, then generate TIN, and finally convert the generated TIN to raster; surface interpolation: will match on the map CAD and the created TIN use the "Interpolation Shape" tool to perform surface interpolation processing. When the difference is reached, remove the irrelevant elements in the CAD image and keep the Polyline elements; Generate the scene: the CAD export of the georeferencing in the GIS system is completed, Use CAD to generate scenarios; parametric modeling: implement parametric modeling according to CGA modeling rules; import scenarios: communicate with GIS to import model scenarios.

Embodiment 5:

In embodiment four, add the following procedure:

In step 5, firstly import the CGA rule file, edit the road elements according to the CGA rules, adjust the length and width of the road section, the number of lanes and other information, and adjust the height of the piers and the spacing of the piers for the overpass objects, and complete the element creation. If there are some elements such as bridge piers in the created model that need to be modified, you can select them and set the pier height attribute to 0, you can delete the redundant piers, and edit the elements according to the actual situation of the road scene. Complete the segmentation required by the target and the modification of each attribute value until the requirements are met and the overall creation of the scene is completed.

Import: encapsulate the CAD route map to GIS, first import the CAD map; add elevation: after collecting the elevation points, generate point elements, then generate TIN, and finally convert the generated TIN to raster; surface interpolation: will match on the map CAD and the created TIN use the "Interpolation Shape" tool to perform surface interpolation processing. When the difference is reached, remove the irrelevant elements in the CAD image and keep the Polyline elements; Generate the scene: the CAD export of the georeferencing in the GIS system is completed, Use CAD to generate scenarios; parametric modeling: implement parametric modeling according to CGA modeling rules; import scenarios: communicate with GIS to import model scenarios.

Embodiment 6:

In embodiment five, add the following procedure:

In step 6, the scene model to be exported and saved is selected and saved to the specified folder, and the above saved file is loaded into the ARCGIS PRO platform, that is, the import of the scene model is completed, and the model road segment has been formed in sections, including its basic property information.

Import: encapsulate the CAD route map to GIS, first import the CAD map; add elevation: after collecting the elevation points, generate point elements, then generate TIN, and finally convert the generated TIN to raster; surface interpolation: will match on the map CAD and the created TIN use the "Interpolation Shape" tool to perform surface interpolation processing. When the difference is reached, remove the irrelevant elements in the CAD image and keep the Polyline elements; Generate the scene: the CAD export of the georeferencing in the GIS system is completed, Use CAD to generate scenarios; parametric modeling: implement parametric modeling according to CGA modeling rules; import scenarios: communicate with GIS to import model scenarios.

To sum up: the traffic scene modeling and model integration method, through the City Engine with the ARCGIS platform has a good data interface to model the scene and integrate the entity object information into its unique data bearing platform, to solve the problem of the current situation. There are technical dynamic information integration capabilities are poor, for large-scale scenes such as towns and other scene information integration capabilities are weak, and the cost of building an information platform is high. This traffic scene modeling and model integration method has the ability to build an information platform. The advantages of low cost and strong information integration capability, and the data integration coverage is wide, covering construction, transportation, safety, geology, etc., and adding and modifying attribute data for various entity objects according to actual needs, the scale of the scene model is even larger. , City Engine can model large-scale city-scale scenarios, and has a good data communication interface with ARCGIS, which can integrate a very large data scale. The rule-based modeling scheme is more flexible, and the data integration scheme is flexible and changeable. City Engine can Regular modeling is carried out for different entity objects, especially roads, bridges, tunnels and other objects in the field of transportation. As a carrier, 3D scene models such as roads and interchanges can be generated in batches by adding attribute information of roads, and The road section can be divided into units according to the needs, and the road can be divided into road section units to integrate different attribute information for each section unit. The data management platform is highly visualized and can display different scene information according to different needs of users. The cost of building a data platform is long. It is lower than the construction cost of mainstream information platforms, and it is more competitive for large-scale urban traffic data integration management projects.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. a traffic scene modeling and model singulation method, is characterized in that: comprise the following steps: Step 1: Import: package the CAD roadmap to GIS, and import the CAD map first; specifically, create a new project in ArcGIS PRO software, the packaged file will be saved in the folder of the file, create a new map and create a new scene in the insert column, Link views, synchronize 2D maps and 3D scenes by center and scale, add data, import CAD drawings to be packaged into new maps, define projections in the CAD layers toolbar, change the spatial reference of CAD files, perform georeferencing, Adapt to the display range, adjust the source layer to make it fit the current display range, match the CAD map to the current map scene, add control points to the corresponding points on the CAD route map, and then add control points to the corresponding base map in the GIS, The CAD map and the new map are accurately registered, geoprocessed, and the CAD is transferred to the geodatabase using the conversion tool: save the matched CAD map, and use the "CAD to geodatabase" tool to convert it to GBD format; Step 2: Add elevation: After collecting elevation points, generate point elements, then generate TIN, and finally convert the generated TIN to raster; Step 3: Surface interpolation: Use the "Interpolation Shape" tool to perform surface interpolation processing on the CAD matched on the map and the created TIN. When there is a difference, remove the irrelevant elements in the CAD image and keep the Polyline elements; Step 4: Generate the scene: The CAD export of the georeferencing in the GIS system is completed, and the CAD is used to generate the scene; specifically, the georeferencing CAD in the GIS system is firstly exported to the DWG format file, and the above file is imported into the building using the City Engine. In the model scene, use element conversion to convert CAD data into a plane element type that can be edited; Step 5: Parametric modeling: implement parametric modeling according to CGA modeling rules; Step 6: Import the scene: Communicate with the GIS to import the model scene. 2. a kind of traffic scene modeling according to claim 1 and the model singulation method, it is characterized in that: in described step 2, the point coordinates obtained specifically according to actual official data, as the longitude and latitude coordinates and elevation of the collection target area, And save it in Excel, use the "XY table to point" tool to generate point elements, on the basis of point elements, use the "Create TIN" tool to generate TINs, and on the basis of the already created TINs, use "TIN to grid" Grid tool to generate an elevation source on the map. 3. A kind of traffic scene modeling and model singulation method according to claim 1, it is characterized in that: in described-step 5, specifically, import CGA rule file first, according to CGA rule, edit road element, Adjust the length and width of the road section, the number of lanes information, and adjust the height of the piers and the spacing of the piers for the overpass objects, and complete the element creation. If there are some pier elements in the created model that need to be modified, you can select them and set the pier height to one. If the item attribute is set to 0, the redundant piers can be deleted, the elements can be edited according to the actual situation of the road scene, the segmentation required by the target and the modification of each attribute value can be completed, until the requirements are met and the overall scene creation is completed. 4. A traffic scene modeling and model singulation method according to claim 1, characterized in that: in step 6, specifically, the scene model to be exported and saved is selected and saved to a designated folder, and the above-mentioned The saved file is loaded into the ArcGIS PRO platform, that is, the import of the scene model is completed, and the model road segment has been formed in sections, including its basic attribute information.