A WAVELET-BASED METHODOLOGY FOR SCALE-SPACE ANISOTROPIC ANALYSIS

被引：27
|
作者：
KUMAR, P
机构：
[1] Universities Space Research Association, Greenbelt, Maryland
来源：
GEOPHYSICAL RESEARCH LETTERS | 1995年 / 22卷 / 20期
关键词：
D O I：
10.1029/95GL02934
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
It is well known that several geophysical fields exhibit characteristic features at different scales. For some such fields scale-space anisotropy is also present, that is, features contributing significant fraction of energy are oriented in different directions at different scales. Examples of such fields include clouds, rainfall, hurricanes etc. A technique based on wavelet transforms (with two-dimensional directionally oriented Morlet wavelet) is developed to analyze such random fields. This methodology has significant advantage over Fourier transform based techniques and is demonstrated using the analysis of a spatial rainfall field.
引用
收藏
页码：2777 / 2780
页数：4
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