Research on 3D Model Reconstruction and Texture Mapping Technology of Oblique Photogrammetry
In order to obtain high-accuracy building 3D models and meet the basic data requirements of smart cities,this paper intro-duces the concept of rendering to texture (RTT) on the basis of traditional oblique photogrammetry 3D modeling,extracts the texture information in the oblique photogrammetry triangulation mesh model,generates a higher fineness unobstructed texture,and then maps it to the surface of the 3D model of the buildings to complete the production of high fineness 3D models. Through comparative analysis with the traditional oblique photogrammetry 3D modeling method,it is verified that the texture mapping effect of the 3D model of the RTT technology method is better,the rendering efficiency is higher,and it has completed topological semantics,especially for complex areas with occlusions. This technology method texture is more refined,and it can provide a high fineness three-dimensional model of buildings that meets the requirements for smart cities.