Data seamless fusion method and system in three-dimensional GIS platform

Abstract

The invention discloses a data seamless fusion method and system in a three-dimensional GIS platform. The method comprises the steps that an elevation reference surface is selected based on surface elevation data in original data meeting set requirements; based on the elevation datum plane, spatial correction and geographical registration are carried out on the original data meeting the set requirements through the spatial correction and geographical registration technology, and the original data with matched coordinates are obtained; a DEM with matched coordinates is edited; and a three-dimensional model of a building and a three-dimensional model of an underground pipe network are constructed by taking the edited DEM as a reference surface. In the three-dimensional GIS platform, existingtwo-dimensional or three-dimensional data is utilized to achieve the seamless fusion effect, the data waste is reduced, the investment in the construction process of an overground and underground integrated information system is reduced, meanwhile, the seamless fusion of overground and underground full-space data can be realized to the greatest extent, and the data precision is improved.

Description

technical field [0001] The invention relates to the technical field of seamless data fusion, in particular to a method and system for seamless data fusion in a three-dimensional GIS platform. Background technique [0002] In recent years, urban disasters such as urban waterlogging, ground fissures, and land subsidence have occurred one after another, which are closely related to unreasonable urban planning and construction, overexploitation, decline in groundwater levels, and groundwater pollution. At the same time, due to the development of industrialization and the increase of urban population, the available space above the city is becoming less and less, forcing city managers to pay attention to the development and utilization of underground space. The continuous investment in underground facilities such as urban subways, underground parking lots, underground shopping malls, and underground civil air defense also means that the development and utilization of underground s...

AI Technical Summary

Problems solved by technology

Although this method can more accurately achieve the purpose of above-ground and underground integration, this method cannot directly use existing data and requires re-modeling, which requires a lot of manpower, material resources, financial resources and time.

Due to the rapid advancement of urban construction, if the 3D model of the city cannot be dynamically updated, the established 3D model cannot reflect the current state of the city in time, which will inevitably cause great waste

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