3D city model construction based on a consumer-grade UAV

doi:10.6046/gtzyyg.2018.02.09

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Abstract

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.

Keywords consumer-grade UAV oblique photogrammetry 3D model

P23

Corresponding Authors: Hui LI E-mail: 1786399629@qq.com;leelmars@gmail.com

Issue Date: 30 May 2018

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	Zhongdi YU
	Hui LI
	Fang BA
	Zhaoyang WANG

Cite this article:

Zhongdi YU,Hui LI,Fang BA, et al. 3D city model construction based on a consumer-grade UAV[J]. Remote Sensing for Land & Resources, 2018, 30(2): 67-72.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2018.02.09 OR https://www.gtzyyg.com/EN/Y2018/V30/I2/67

Fig.1 Phantom 4 UAV and ground control system

Fig.2 Flowchart of three-dimensional model construction

Fig.3 Flight planning

Fig.4 Pictures with multi-view

Fig.5 Result of aerotriangulation

Fig.6 Dense point cloud and DSM

Fig.7 3D model with texture

Tab.1 Statistics for the error of check points(m)

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