Geographic information data fusion visualization method based on smooth rendering mode

The invention discloses a geographic information data fusion visualization method based on a smooth rendering mode, aiming at each layer containing geographic information, based on a GPU (Graphics Processing Unit), a CPU (Central Processing Unit) and an OpenGL (Open Graphics Library) tool, by adopting a quadtree construction method, a visual cone visual elimination algorithm, a graphic rendering cache mechanism and a multi-thread technology, fusion rendering of each layer is completed, and the fusion rendering is displayed at a device end. According to the method, a visualization method of multi-layer data high fusion rendering is adopted, the parallel computing capability of the GPU can be fully utilized, the problem of geographic information multi-layer smooth fusion rendering is solved, and the rendering efficiency is improved. 本发明公开了一种基于平滑渲染模式的地理信息数据融合可视化方法，针对包含地理信息的各图层，基于GPU、CPU，以及OpenGL工具，并采用四叉树构造方法、视锥体可视剔除算法、图形渲染缓存机制、多线程技术，完成各图层的融合渲染，并在设备端进行显示，该方法采用了多图层数据高度融合渲染的可视化方法，能够充分利用GPU并行计算的能力，解决了地理信息多图层平滑融合渲染的问