几种小波基在遥感图像压缩中的应用效果比较
赫华颖, 陆书宁
中国资源卫星应用中心,北京 100094
A COMPARISON OF THE APPLICATION EFFECTS OF SEVERAL WAVELET BASES IN REMOTE SENSING COMPRESSION
HE Hua-ying, LU Shu-ning
China Centre for Resources Satellite Data and Application, Beijing 100094, China
摘要 分析了小波基的基本性质,简述了在遥感图像小波压缩中小波基选择的常用方法; 分别用4种常用的典型小波基对8幅含有
不同典型地物的遥感图像进行小波编码实验,并用5种方法全面评价了小波基的应用效果。结果表明,在遥感图像小波压缩中,D
(9,7)小波基的应用效果最好。据此,提出了一种小波基选择的改进方法。
关键词 :
SAR ,
GIS ,
水稻
Abstract : In this paper, basic characteristics of the wavelet base are analyzed, and a common method for choosing
wavelet bases in compression of the remote sensing image based on wavelet transform is described briefly. Eight
images with different representative ground objects were respectively compressed with four kinds of representative
wavelet bases in a wavelet transform coding experiment. The application effects of these wavelet bases were
evaluated by five methods. The results show that the application effect of wavelet base D (9, 7) is the best. On
such a basis, an improved method for choosing wavelet bases is proposed.
Key words :
SAR data
GIS
Rice map
收稿日期: 2008-02-04
出版日期: 2009-07-06
通讯作者:
郝华颖(1981-),女,中国资源卫星应用中心在读硕士研究生,遥感图像处理专业,研究方向为遥感图像压缩及其质量评价。
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