测绘成果三维可视化的关键技术与方法探讨

3D Visualization for Surveying and Mapping Data

以信息化测绘发展需求为背景,探讨通过集成多源、多尺度、多类型的海量测绘成果数据,基于ArcGIS平台构建虚拟地理环境三维可视化系统的关键技术.通过针对各类测绘成果的数据组织、空间坐标动态转换精度、多尺度场景的平滑过渡阀值三个方面进行探讨,并使用ArcEngine和.net工具开发了JxGlobe系统,实现了全球背景下从全省宏观尺度虚拟地形环境到城市微观尺度三维景观的无缝实时漫游,以此验证了这些技术方法在测绘成果三维可视化中的切实有效.

As response to the demand on advanced on developing surveying and mapping technology, we discussed the key technologies of 3D visualization system of virtual geographical environment by integrating mass multi-source, multi-scale, and heterogeneous surveying and mapping data, based on ArcGIS platform. We focused on the organization of various surveying and mapping data for accuracy of dynamic conversion of spatial coordination, and threshold values of the smooth switch on multi-scale scenes. Then using ArcEngine and net Developer Kit, we developed JXGLOBE to validate the feasibility and efficiency of these techniques, by which the seamless and real-time ramble is implemented from macro-scale provincial virtual geographical environment to 3D micro-scale city landscape.