Embedding user-generated content into oblique airborne photogrammetry-based 3D city model

作者:Liang, JM (Liang, Jianming)[ 1,2 ] ; Shen, S (Shen, Shen)[ 1,3 ] ; Gong, JH (Gong, Jianhua)[ 1,2 ] ; Liu, J (Liu, Jin)[ 1,3,4 ] ; Zhang, JM (Zhang, Jinming)[ 1,5 ]

INTERNATIONAL JOURNAL OF GEOGRAPHICAL INFORMATION SCIENCE

卷: 31  期: 1  页: 1-16

DOI: 10.1080/13658816.2016.1180389

出版年: 2017

摘要

Oblique airborne photogrammetry-based three-dimensional (3D) city model (OAP3D) provides a spatially continuous representation of urban landscapes that encompasses buildings, road networks, trees, bushes, water bodies, and topographic features. OAP3D is usually present in the form of a group of unclassified triangular meshes under a multi-resolution data structure. Modifying such a non-separable landscape constitutes a daunting task because manual mesh editing is normally required. In this paper, we present a systematic approach for easily embedding user-generated content into OAP3D. We reduce the complexity of OAP3D modification from a 3D mesh operation to a two-dimensional (2D) raster operation through the following workflow: (1) A region of interest (ROI) is selected to cover the area that is intended to be modified for accommodating user-defined content. (2) Spatial interpolation using a set of manually controlled elevation samples is employed to generate a user-defined digital surface model (DSM), which is used to reform the ROI surface. (3) User-generated objects, for example, artistically painted road textures, procedurally generated water effects, and manually created 3D building models, are overlaid onto the reformed ROI.

通讯作者地址: Gong, JH (通讯作者)

Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing, Peoples R China.

地址:

[ 1 ] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing, Peoples R China

 [ 2 ] Zhejiang CAS Applicat Ctr Geoinformat, Jiashan, Peoples R China

[ 3 ] Univ Chinese Acad Sci, Beijing, Peoples R China

[ 4 ] Natl Marine Data & Informat Serv, Tianjin, Peoples R China

[ 5 ] Informat Engn Univ, Inst Geospatial Informat, Zhengzhou, Peoples R China