1. School of Earth Sciences, China University of Geosciences, Wuhan 430074, China 2. Beijing North-star Digital Remote Sensing Technology Co., Ltd., Beijing 100120, China
3D modeling of urban buildings is one of the key technologies for smart city construction. The traditional modeling methods have many disadvantages in the process of data collection, such as operating difficulty, high cost and low efficiency in 3D modeling. In this paper, the authors propose a 3D city modeling approach based on oblique photography technology of unmanned aerial vehicle(UAV) for consumption. The cradle is used to control the direction of lens, and multi-angle slanted images are obtained. Then the 3D model is constructed by using aerial triangulation principle, and textures of building walls are extracted from multi-angle images. Finally the texture is mapped to the corresponding models, and the true 3D model is built. Result shows that the approach can not only improve modeling efficiency but also reduce the cost during data producing process.
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Institute of Standardization of Surveying and Mapping of the State Bureau of Surveying and Mapping, the First Institute of Aero-Photogrammery and Remote Sensing,NASG,the Third Institute of Aero-Photogrammery and Remote Sensing,NASG. GB/T 23236—2009 specifications for aerotriangulation of digital aerophotogrammetry[S].Beijing: China Standards Publishing House, 2009.
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