Research on kernel algorithm of real-time rendering based on TB lever terrain data

With the availability of terrain data of the TB level,how to render terrain data of TB magnitude based on ordinarily computer efficiently,is becoming a hot topic in GIS academia.Organization and management of massive data is the core mechanism for 3D terrain rendering.The traditional data structures as quadtree,octree and so on are not effective,which cannot support real-time displaying and roaming of large-scale terrain scene.According to the mechanism of multi-level buffer,implementation dynamic dispatching of LOD,graphics memory dispatching and multi-core CPU parallel computing strategy,this paper has good results.Finally,this paper puts forward the solution,a real-time Terrain Rendering Algorithm which has no concern with data size.It is verified by experiment on massive data of 1GB,10 GB,200 GB,500 GB and so on,the rendering rate can reach to 30 frame/s.It is faster than most existing algorithms.The experiment result shows the practicability of the real-time terrain rendering algorithm.