Real Estate 3D Monomerization Modeling And Application Research Based On UAV Oblique Photogrammetry

With the increasing maturity of drone aerial survey technology,the technical means of using oblique photogrammetry to create a real 3D model is playing an increasingly important role in the surveying and mapping industry.The oblique photogrammetry technology uses a single lens or multiple lenses to obtain multi-angle image data for the same building texture information.Use ContextCapture software to process the acquired multi-angle image data to obtain a three-dimensional model of the building with real texture information.This operation method is more efficient,reduces the workload of field work and reduces work costs.It plays a huge role in real estate measurement,deformation monitoring and smart cities.This dissertation focuses on the research of 3D singular modeling based on UAV tilt photogrammetry.The research content of the dissertation mainly includes the following aspects:(1)The system composition of the UAV,the introduction and technical principles of tilt photogrammetry,and several key technologies of tilt photogrammetry technology are introduced,such as:multi-view image preprocessing,multi-view image joint adjustment,multi-view image dense matching and texture mapping Wait.(2)Research on the modeling of real 3D campus based on ContextCapture software.The Zhonghaida iFly-D5 multi-rotor UAV is equipped with Sony's five-lens image acquisition equipment,and the technical means of oblique photogrammetry is used to acquire multi-angle images and POS data of Anhui University of Science and Technology buildings.It explains in detail how to plan the route,how to lay out the image control points,and what method to use to plan the route and arrange the image control points.Use ContextCapture software to create a three-dimensional model for Anhui University of Science and Technology,and explain and explain the key steps of modeling.The accuracy analysis of the real 3D campus model is carried out,and after the accuracy inspection is completed,the conclusion is reached:the error in the plane coordinates of the 3D model of Anhui University of Science and Technology campus is 0.041m,and the error in the elevation is 0.095m;it fully meets the accuracy requirements of large-scale topographic maps,Can be applied to real estate survey and other engineering projects.(3)The research and application of advanced singularization modeling of the campus 3D model.Using Wuhan Tianjihang DP-Modeler single modeling software combined with image processing software such as 3DsMax and Photoshop.The single modeling operation of the 3D campus model makes the 3D model to be further utilized.Use the singularized 3D model to build a Web-side 3D campus,making full use of the previous 3D model of "a piece of skin".Use VB.NET to establish the cadastral database of Anhui University of Science and Technology,and manage the attribute information of the campus buildings of Anhui University of Science and Technology more efficiently.Figure[44]Table[16]Reference[80]...