Android平台的多尺度地理信息三维显示技术

Multi-Scale Three-Dimensional Display of Geographic Information Based on Android

分析了OSGearth引擎和Android平台的优势,重点对移动终端实现海量地理信息数据的三维可视化和使用OSGearth渲染引擎构建三维地球模型的关键技术进行了研究。最后,利用OSGearth引擎构建三维地球场景,成功移植到移动平台,并在Android平台上实现了全球多尺度地形数据的实时调用和三维显示。实验结果表明,基于OSGearth的三维地球应用在Android平台上运行流畅,响应速度快,图形质量高,具有良好的交互性,实现了地形数据的快速加载和无缝拼接,为基于数字地球的三维地球模型在移动平台的移植提供了实践参考。

An analysis was given on the advantages of OSGearth engine and the Android platform, which focus on the key technology of using OSGearth rendering engine to construct 3D Earth model and realizing the vast geographic information data of 3D visualization on mobile terminal. Finally, three-dimensional Earth scene was built by OSGearth engine, which successfully transplanted to the mobile platform,and the global multi-scale topographic data call and 3D display were implemented on the Android panel. The experimental results showed that the applications of the three-dimensional Earth based on OSGearth operated smoothly on Android tablets and performed well in interactive response, quality graphics and interaction. Rapid loading and terrain data seamless were achieved by this way, and a practical reference was given for the three-dimensional Earth scene which based on the Digital Earth in the mobile platform.