Construction Of Android Service Platform In Holographic Real Geographic Environment,Hengshan Village,Mingguang City

3D Real Scene is a real,three-dimensional,time-sequenced spatiotemporal information,which can reflect human life,production,and ecological space.Under the guidance of China’s construction requirements,3D Real Scene has been applied in many fields such as urban planning management,digital economy,digital public security,and cultural protection.At present,different fields have different emphasis on 3D Real Scene applications.Enterprise applications have a high penetration rate and develop rapidly,but its data sources are not diversified enough;government applications obtain a larger amount of data and a wider range of sources,but these applications are mostly based on desktop devices and only a small part are based on mobile terminals.These situations have limited some of its application functions,and has lag behind in industry development and knowledge popularization.For the above problems,this thesis builds a fullinformation physical geographic environment application platform on the mobile terminal based on the 3D real scene model,supported by 2D and 3D data integration technology,and multi-source data fusion,research and solve a series of problems such as large-scale real scene data caching on mobile terminals,2D and 3D integrated application methods,and multi-source data organization methods.The main research content of this thesis is as follows:(1)Visualization of full-information physical geographic environment.Using oblique photography technology to build 3D real scene,integrate it with base maps such as remote sensing images,vector graphics,and large-area 3D topographic maps,and superimpose geographic element data such as real estate integration and land survey data to build a multi-source database.Visualize the information contained in geographic data in many aspects,improve the interaction between the platform and users,and build a physical geographic environment for the experimental selection area.(2)The application of 2D and 3D integration in the mobile platform,and use the space superposition method,color rendering rules,2D and 3D point,line and plane symbol design,design and use of visual labels,etc.as the entry point between different dimensional data,reasonably design the user interaction based on the mobile device and the 2D and 3D integrated scene to achieve the purpose of conveying visual information more efficiently and intuitively.Optimized the method for mobile devices to cache largescale 3D real scene data,making the use of the platform and data scheduling smoother.(3)Design and development of Android platform based on full-information physical geographic environment,use mobile GIS development technology and data visualization technology to jointly build a mobile terminal full-information real scene service platform;based on the characteristics of multi-source data,analyze the functional requirements of the platform,improve the overall system architecture design,and clarify the use process and purpose of each module.Show part of the realization process and actual effect of the platform,it provides a reliable solution for the popularization of the application of real3 D scene.Based on the above research content,this thesis completes the integration,organization,and scheduling of multi-source data for mobile devices,design and implement an easy-to-understand full-information real scene geographic environment application platform on the mobile terminal.Starting from multi information and multi angle,realize the display of geographic information resources in the real geographical environment,explore the establishment of a more advanced and efficient resource information management and sharing platform for the construction,improve the expression level of geographic information.It is of great significance to the construction and promotion of 3D Real Scene in China.