利用BEMD-自适应滤波去除SAR干涉图噪声
Geomatics and Information Science of Wuhan University(2014)
Abstract
基于二维经验模态分解特性,提出了一种基于BEMD-自适应滤波的干涉图抑制噪声算法,并对自适应滤波的窗口进行了改进.根据窗内特征自适应调节窗口大小,并通过门限来决定是否需要改变窗口尺寸,达到在同性质区增大窗口来抑制噪声,在异性质区减小窗口以最大限度地保护图像细节的目的.实验表明,该算法不仅能有效地抑制干涉图的噪声,增强滤波的局部自适应性,而且能很好地保持条纹的细节信息.
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Key words
interferogram denoising method,bemd
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