文章基本信息

标题：DEM compression based on integer wavelet transform
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作者：Renxi Chen ; Xinhui Li
期刊名称：Geo-spatial Information Science
印刷版ISSN：1009-5020
电子版ISSN：1993-5153
出版年度：2007
卷号：10
期号：2
页码：133-136
DOI：10.1007/s11806-007-0038-8
出版社：Taylor and Francis Ltd
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.
关键词：DEM; wavelet transform; data compression