Refined Reality Modeling And Visualization Based On Space Ground Fusion

In recent years,with the upgrading of digital cities to smart cities and the upgrading of smart applications such as AR/VR,the limitations of two-dimensional data have been unable to meet the needs of various sectors of society.Three-dimensional data makes 3D visualization modeling technology a trend of development with its visuality,intuition and visibility,and the requirements for refinement of the model are getting higher and higher.At the same time,the ability of 3D model space display and 3D spatial analysis has also attracted widespread attention from all walks of life in society.Therefore,this article has conducted in-depth research on the construction of detailed real three-dimensional models and the visualization of threedimensional visualization platforms.UAV aerial tilt photography technology can efficiently obtain large-area urban threedimensional models,and ground close-range photography technology can be refined into smallscale three-dimensional models,which are different from each other.This article focuses on the three-dimensional modeling technology of oblique photography and the visualization of threedimensional platform display theory.It has conducted in-depth research on key technical issues and launched the unmanned research area of Jinhuagong National Mine Park in Datong City,Shanxi Province.Aerial aerial image and near-ground street scene image collection,airspace fusion modeling test,visual analysis platform construction,etc.The main work includes the following aspects:(1)It describes in detail the composition of aerial drone photography system of UAV,the aerial tilt image and the collection method of ground close-range image.Specifically,it includes flight body parameters,flight control and navigation,image acquisition systems,monitoring systems,aerial camera technical parameters,route planning,and image quality inspections.(2)A detailed analysis of the application of the key technology of space integration in the reconstruction of real three-dimensional models.The key technologies include joint adjustment of multi-view images,dense matching of multi-view images,spatial fusion,point cloud fusion,construction of TIN network,and texture mapping.(3)Taking the Jinhuagong National Mine Park in Datong City of Shanxi Province as the research area,this paper collects the aerial tilt image and ground close-range image of drones,constructs the real three-dimensional refined model by using the space fusion method,and compares the front and back models of the fusion.And systematically analyzed the threedimensional model constructed by this method can meet the mapping accuracy.(4)In the context of fully understanding the purpose of visualization research,this paper further analyzes the development mode of Terra Explorer Pro7.0,a sub-module under the Skyline product,and preliminarily builds a three-dimensional geographic information platform for displaying three-dimensional models and introduces it into the experimental area Jinhuagong National Mine Park.Refined model for system function demonstration.