6Xu W P, Zhu Q, Zhang Y T.Semantic modeling approach of 3D city models and applications in visual exploration[J].The International Journal of Virtual Reality, 2010, 9(3):67-74.
7中国地理学会.地图学与地理信息系统学科发展报告[M].北京:中国科学技术出版社,2014.
8Zhu Q, Li Y.Hierarchical lane-oriented 3D road-network model[J].International Journal of Geographical Information Science, 2008, 22(5):479-505.
9Zhu Q, Hu M Y.Semantics-based 3D dynamic hierarchical house property model[J].International Journal of Geographical Information Science, 2010, 24(2):165-188.
10Gr?ger G, et al.OGC city geography markup language (CityGML) encoding standard V2.0[M].OGC, 2012.
