Urban three-dimensional space grid compression coding method and device and terminal equipment

Abstract

The invention discloses an urban three-dimensional space grid compression coding method and device, terminal equipment and a readable storage medium, and the method comprises the steps: dividing a three-dimensional space region into a plurality of large grid regions, and dividing each large grid region into a plurality of small grid regions; extracting a to-be-counted small grid region occupied bythe space object; performing data statistics on each to-be-counted small grid region, including respectively counting an initial column number, a continuous adjacent column number, an initial row number, a continuous adjacent row number, an initial layer number and a continuous adjacent layer number of a grid occupied by each space object, and combining to generate space object interval data; converting the space object interval data into binary combination codes, and converting the binary combination codes into absolute space grid codes according to the corresponding relation between the large grid areas and the small grid areas. The size of three-dimensional space voxelized data and the size of three-dimensional space planning data can be effectively optimized, so that efficient space object retrieval and space path analysis are met.

Description

technical field [0001] The present invention relates to the technical field of spatial coding, in particular to a compression coding method, device, terminal equipment and readable storage medium of a three-dimensional urban spatial grid. Background technique [0002] With the development of computer graphics technology, geographic information technology and modern basic information facilities, 3D GIS has been widely used in various fields such as resource exploration, geological models, infrastructure engineering, urban construction and services, etc. Among them, the application of 3D GIS is most frequent in the field of urban construction and service. Since the concept of smart earth was put forward in 2008, the concept of smart city was put forward immediately. As the product of the combination of digital city and Internet of Things, it is considered to be the direction of urban development and the trend of civilization development in the information age. With the rapid ...

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Problems solved by technology

[0011] The embodiment of the present invention provides an urban three-dimensional space grid compression coding method, device, terminal equipment and readable storage medium, aiming at solving the problem of existing three-dimensional space data Coding and compression technology has the problems of poor compression effect, low compression efficiency and complex conversion process, so as to effectively optimize the size of 3D space voxelization data and 3D space planning data to meet the needs of efficient spatial object retrieval and spatial path analysis

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