DEM Compression Based on Integer Wavelet Transform

被引：3
|
作者：
Chen Renxi [1 ]
Li Xinhui [1 ]
机构：
[1] Hohai Univ, Coll Civil Engn, Dept Surveying & Mapping Engn, 1 Xikang Rd, Nanjing 210098, Jiangsu, Peoples R China
来源：
GEO-SPATIAL INFORMATION SCIENCE | 2007年 / 10卷 / 02期
关键词：
DEM; wavelet transform; data compression;
D O I：
10.1007/s11806-007-0038-8
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
DEM data is an important component of spatial database in GIS. The data volume is so huge that compression is necessary. Wavelet transform has many advantages and has become a trend in data compression. Considering the simplicity and high efficiency of the compression system, integer wavelet transform is applied to DEM and a simple coding algorithm with high efficiency is introduced. Experiments on a variety of DEM are carried out and some useful rules are presented at the end of this paper.
引用
收藏
页码：133 / 136
页数：4
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