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Digital twin city multi-scale space grid coding method and device

A technology of spatial grid and coding method, which is applied in the field of multi-scale spatial grid coding in digital twin cities, can solve the problems of inconsistent accuracy, excessive length, large difference, etc., and achieve the reduction of grids that do not meet the accuracy requirements and reasonable division methods Effect

Active Publication Date: 2020-02-21
广州海格星航信息科技有限公司
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Problems solved by technology

However, since the spatial length of each dimension is not necessarily equal, or even very different, the accuracy of each dimension on the 3D space grid is inconsistent. It may happen that a certain dimension can meet the accuracy requirements, but the length of other dimensions is too large or too small. Resulting in grids that do not meet accuracy requirements or excessive data redundancy

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  • Digital twin city multi-scale space grid coding method and device
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  • Digital twin city multi-scale space grid coding method and device

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0040] see figure 1 , is a schematic flow chart of the digital twin city multi-scale spatial grid coding method provided in Embodiment 1 of the present application. include:

[0041] Step S11, obtaining the digital twin city space.

[0042] In this embodiment, the entire urban space is projected into a virtual space Cartesian coordinate system according to the equidistant azimuth projection formula, so as to obtain a digital twin urban space 1:1 with the real world.

[0043] Step...

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Abstract

The invention discloses a digital twin city multi-scale space grid coding method and device, and the method comprises the steps: carrying out the spatial subdivision of a digital twin city space to obtain a unit space grid with the same size as a preset minimum space grid; taking the unit space grid as an initial level, iteratively amplifying the unit space grid according to a preset amplificationfactor to form space grids of different levels; and encoding the spatial grid of each level to generate a grid code of the spatial grid. Compared with the prior art, the spatial grids of multiple levels are generated and the grids of all levels are coded correspondingly, the boundary of each dimension can be reasonably given, the situation that grids do not meet the precision requirement or dataredundancy is too large due to fixed bitwise distribution is reduced, the dividing mode of the space grids is more reasonable and regular, and the method has more advantages in three-dimensional spacedisplay and three-dimensional space analysis.

Description

technical field [0001] This application relates to the technical field of geospatial information organization, and in particular to a digital twin city multi-scale spatial grid encoding method and device. Background technique [0002] "Digital twin city" refers to recreating a corresponding "virtual world" in cyberspace by digitizing all elements of the physical world, such as people, objects, and events, to form a physical world in the physical dimension and a digital world in the information dimension. A pattern of co-existence and blending of virtual and real. One of the core foundations of the "digital twin city" is the location service based on three-dimensional space, that is, the spatio-temporal analysis of 3D GIS. [0003] The management of geospatial data is the core of 3D GIS. The 3D geospatial data used in 3D GIS has the characteristics of large amount of data, complex relationship between spatial objects and entities, and large amount of calculation for spatial ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/29
CPCG06F16/29
Inventor 李焱林郑进锋朱贵冬周炜李欢
Owner 广州海格星航信息科技有限公司
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