基于MapGIS三维数字城市的实现
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摘要
随着硬件设备、信息技术和媒体技术的迅速发展,大规模虚拟地形场景得到了越来越多的关注,三维数字城市的重要性也越来越突出,同时出现了一些技术难点。针对三维数字城市建设中三维可视化表达模型和可视化技术的难点问题,提出了一种基于MapGIS技术的三维数字城市技术,采用了MapGIS技术和Sketchup平台相结合,通过制作精细的二维地图数据、三维模型并通过二维地图数据与三维模型的无缝结合,实现了三维数字城市。具体的实例结果表明,在三维建模、三维模型存储和三维模型可视化的整个过程中体现出快捷、交互性好、浏览效率高等优点,较好地解决了技术的难点。为三维数字城市建设提供了一种新的方法,为三维数字城市的实现提供了技术参考。
With the rapid development of hardware equipment,information and media technology,the virtual terrain scene with large scale has become more and more concerned by people,and some technical difficulties have emerged. In order to solve the difficulties in the process of 3D digital city construction,such as the technique of 3D visualization expression model and visualization,a 3D digital city technology based on Map GIS is proposed.The combination of Map GIS and Sketchup platform,the three-dimensional digital city is realized through the production of fine two-dimensional map data,three-dimensional model and seamless integration between two-dimensional map data and three-dimensional model.The specific example demonstrates that the whole process of 3D modeling,3D model storage and visualization of 3D model is fast and interactive,with high efficiency,which solves the technical difficulties well. It provides a newmethod and technical reference for the construction of 3D digital city.
With the rapid development of hardware equipment,information and media technology,the virtual terrain scene with large scale has become more and more concerned by people,and some technical difficulties have emerged. In order to solve the difficulties in the process of 3D digital city construction,such as the technique of 3D visualization expression model and visualization,a 3D digital city technology based on Map GIS is proposed.The combination of Map GIS and Sketchup platform,the three-dimensional digital city is realized through the production of fine two-dimensional map data,three-dimensional model and seamless integration between two-dimensional map data and three-dimensional model.The specific example demonstrates that the whole process of 3D modeling,3D model storage and visualization of 3D model is fast and interactive,with high efficiency,which solves the technical difficulties well. It provides a newmethod and technical reference for the construction of 3D digital city.
引文
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[2]王星捷,李春花.基于Unity3D平台的三维虚拟城市研究与应用[J].计算机技术与发展,2013,23(4):241-244.
[3]曹兆峰,何燕兰,李胜才.基于Sketchup和Arc GIS的数字城市三维建模技术[J].地理空间信息,2014,12(5):46-47.
[4]孙钊,吴志华,熊伟.基于三维数字技术的城市设计研究与应用[J].城市规划学刊,2009(7):239-241.
[5]赵子龙.基于3ds Max的城市三维建模技术[J].价值工程,2013,32(4):184-185.
[6]万宝林.3DS MAX与Sketch Up的三维城市建模技术实验对比分析[J].测绘地理信息,2015,40(2):23-25.
[7]李娟,吴红梅,陈永波.基于Skyline的三维数字城市建设项目的设计与研究[J].测绘与空间地理信息,2015,38(10):165-167.
[8]宋宜容,严康文.基于Google Earth的三维数字浏览系统的设计与实现[J].湖北大学学报:自然科学版,2015,37(2):107-111.
[9]Tong L,Li Yanlin.Research progress of three-dimensional digital model for repair and reconstruction of knee joint[J].Chinese Journal of Reparative&Reconstructive Surgery,2013,27(1):50-53.
[10]Zhang Qiuwen,Wang Cheng,Shi Zhongchao,et al.A three dimensional modeling and simulation platform design for digital city[J].Proc Spie,2005,6(3):59855S.
[11]Bremer M,Mayr A,Wichmann V,et al.A new multi scale 3DGIS-approach for the assessment and dissemination of solar income of digital city models[J].Computers Environment and Urban Systems,2016,57:144-154.
[12]Sharma S A,Agrawal R,Jayaprasad P,et al.Development of‘3D city models’using IRS satellite data[J].Journal of the Indian Society of Remote Sensing,2015,23:1-10.
[13]Xiong B,Jancosek M,Elberink S O,et al.Flexible building primitives for 3D building modeling[J].ISPRS Journal of Photogrammetry&Remote Sensing,2015,101:275-290.
[14]Mc Dermid R M,Alatalo K,Blitz L,et al.The Atlas3D ProjectXXX.Star formation histories and stellar population scaling relations of early-type galaxies[J].Monthly Notices of the Royal Astronomical Society,2015,448(4):3484-3513.