陈仁喜, 赵忠明, 王殷行. 基于整型小波变换的DEM数据压缩[J]. 武汉大学学报 ( 信息科学版), 2006, 31(4): 344-347.
引用本文: 陈仁喜, 赵忠明, 王殷行. 基于整型小波变换的DEM数据压缩[J]. 武汉大学学报 ( 信息科学版), 2006, 31(4): 344-347.
shu
CHEN Renxi, ZHAO Zhongming, WANG Yinxing. DEM Data Compression Based on Integer Wavelet Transformation[J]. Geomatics and Information Science of Wuhan University, 2006, 31(4): 344-347.
Citation: CHEN Renxi, ZHAO Zhongming, WANG Yinxing. DEM Data Compression Based on Integer Wavelet Transformation[J]. Geomatics and Information Science of Wuhan University, 2006, 31(4): 344-347.
shu

基于整型小波变换的DEM数据压缩

DEM Data Compression Based on Integer Wavelet Transformation

    摘要
  • 摘要: 从系统的简单性和高效性出发,将整型小波变换运用于DEM数据,采用一种简单高效的编码方案,对不同复杂程度的DEM数据进行了压缩试验,取得了较好的效果,并得出有关DEM数据压缩的一些规律。

     

    Abstract: DEM data is an important component of spatial database in GIS.The data amount is huge and compression is necessary.In view of the simplicity and high efficiency of the compressing system,we apply integer wavelet transforms to DEM data and introduce a simple coding scheme with high efficiency.Experimentations on DEM at different areas are carried out and some rules are educed in the end.

     

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