一种基于GP U的三维数字地形实时编辑方法

摘要

虚拟地理环境下的规划设计需要较高的数字地形编辑支持，通过GPU编程方法，不仅适用于规则格网和三角网数字地形的编辑，还支持倾斜摄影模型、城市精细模型的编辑。本方法支持地形实时编辑、编辑结果分屏对比、叠加矢量数据等，显著提高了大规模实时地形编辑效率。研究成果已成功应用于道路设计、方案规划等实际项目，取得良好效果。%The planning and design in the virtual geographic environment requires better support of the digital terrain editing. Based on GPU programming,this article introduces a method that not only be suitable for regular grid and trian-gulation digital terrain editing,but also supports tilt photography model and fine city model editing. The method supports real-time terrain editing,split-screen comparison of terrain editing results,vector data overlaying,and significantly im-proves the efficiency of large-scale real-time terrain editing. The research results have been successfully applied in real projects of road design and program planning,and obtain good results.