Method and device for local area updating and cutting of three-dimensional simulation map

Abstract

The invention discloses a method and a device for updating and slicing a local area of a three-dimensional simulation map. The method comprises the steps of selecting a to-be-updated area from a whole area, and carrying out pattern collection on buildings of the to-be-updated area; carrying out three-dimensional modeling according to a texture and a structural pattern of the buildings so as to obtain the three-dimensional simulation map of the to-be-updated area; finding slicing parameters before the whole area is updated so as to carry out slicing parameter setting on the whole area, and carrying out slicing processing to obtain a whole area slicing file; and selecting a plurality of edge-corner points of the to-be-updated area, obtaining position coordinates of the edge-corner points, and slicing the to-be-updated area according to the whole area slicing file and the position coordinates of the edge-corner points. According to the method and the device disclosed by the invention, the update efficiency of the three-dimensional simulation map is improved, the manpower and material resource costs for updating the three-dimensional simulation map are reduced, and the method and the device are convenient for an application of the three-dimensional simulation map; and based on a geographical coordinate system, the processing procedures are more complete and accurate.

Description

technical field [0001] The invention relates to the technical field of map updating, in particular to a method and device for updating and cutting a local area of ​​a three-dimensional simulation map. Background technique [0002] With the continuous strengthening of the construction of "smart city" and digital geospatial framework, the demand for 3D simulation maps is also increasing, and 3D simulation maps have also been widely used. The update of 3D simulation maps is an important aspect of 3D simulation maps. Update the map data in time so that the map meets the current requirements of production or life for the map. The rapid update of the 3D simulation map in local areas realizes the high status of the 3D simulation map, makes the 3D map meet the actual production and living needs, and enables the 3D simulation map to be further developed and more widely used. [0003] At present, these methods and processes are mainly used to update the 3D simulation map: [0004] 1...

AI Technical Summary

Problems solved by technology

[0006] Although the traditional 3D full-area update can realize the update of the 3D map, it is time-consuming and laborious, consuming a lot of manpower and material costs, and the update based on large areas will miss some areas that need to be updated

[0007] However, the slice processing of 3D simulation maps depends on the slice technology of pictures. The data obtained by such processing does not have a geographic coordinate reference system, and these technologies do not have complete process processing and operation steps, which is not convenient for slice processing of 3D maps, and is cumbersome. Steps increase the difficulty of publishing 3D simulation maps

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