Oblique photography is a kind of measurement method to obtain multi-angle data through multiple lenses,which can build a three-dimensional scene with real texture.This method breaks through the limitation that conventional aerial photography can only be taken from one direction.However,most of the existing 3D modeling methods based on oblique image data are a continuous whole,which cannot operate and manage individual objects,such as attribute query,building selection,space query,etc.At present,3D scene modeling is still in relatively simple spatial analysis,visual browsing and other aspects,which can not make full use of the advantages of oblique image.Therefore,the development of low-cost and fast monomer methods is the focus of current research.Therefore,this paper carries out in-depth research and discussion on the monomer of 3D model,the classification and application of monomer model data management,urban 3D modeling and materialization,and also puts forward the monomer of oblique photography 3D model and the application strategy of smart city,laying the foundation for the realization of intelligent and fine management of modern city.
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