摘要
利用小波变换的多分辨率特性构建了地面高程数据的动态多分辨率模型,通过小波渐近重构算法解决了多分辨率模型间的平滑过渡问题,通过缝补解决了不同分辨率地形块间的裂缝问题,实现了对大规模地形的视点相关的连续快速绘制,通过实验进行了验证。
This paper explores how to construct dynamic multi-resolution models for terrain elevation data by using multi-resolution characteristic of wavelet transform and proposes a wavelet-progressive-reconstruction algorithm to solve the problem of smooth transition between multi-resolution models.It also solves crack problem between terrain blocks of different resolution through a simple ＂sewing＂ method.Experiment result illustrates that this method can realize view-dependent continuous rapid rendering of large-scale terrain.
出处
《计算机工程》
CAS
CSCD
北大核心
2007年第19期218-220,共3页
Computer Engineering
基金
国防预研基金资助项目
关键词
DEM数据
多分辨率模型
小波变换
连续绘制
DEM data
multi-resolution model
wavelet transformation
continuous rendering
