摘要
提出一种基于双三次B-样条的DEM地形数据重构算法.根据用户对不同地形区域关注程度的不同而采用不同的地形分辨率,可有效地降低计算机负荷.采用该算法可以有效地对关注度较高的区域进行地形重构,提高该区域的地形分辨率.实践结果表明,该算法满足大地形视景仿真系统的需要.
A terrain reconstruction algorithm of DEM datum is proposed based on bi-cubic B-spline interpolation according to attention difference of terrain area, and using the multi-resolution terrain model can lighten computer load, process terrain reconstruction to attention area, and improve the resolving power. The experimental results indicate that this algorithm is practical and applicable.
出处
《烟台大学学报（自然科学与工程版）》
CAS
2007年第2期128-131,共4页
Journal of Yantai University(Natural Science and Engineering Edition)
基金
中国博士后科学基金资助项目(2005038469)
关键词
B-样条
地形重构
DEM
视景仿真
B-spline
terrain reconstruction
DEM
scene simulation
