Abstract: The 3D real scene model of oblique photography is composed of a continuous triangular net through texture mapping,and each geographic element on the model has the characteristic of “a piece of skin”. In view of the existing problem of the inability to manage and edit the geographical objects on the model, this paper proposes a technical method for single modeling based on oblique photography real scene model. Firstly, the method of fully automatic construction based on Street Factory’s real-scene 3D model is discussed by using oblique photography technology. Then, based on the generated three-dimensional real scene model, the single modeling method of the oblique photography real scene model is used to complete the construction of the geographical object single model and the attribute database connection. This paper takes the urban area of Tumote Right Banner as the test area. Through the accuracy analysis of aerial triangulation, the accuracy of the construction of the 3D real scene model in this paper is effectively verified. It provides convenience for the query, management and application of the geographic object attributes in the model, effectively expands the application field of model data and has certain reference value for the construction of smart cities in Inner Mongolia.

Key words: oblique photography, 3D real scene model, Street Factory, monomerization