On the fractal behavior of SAR images of ocean sea surface

F. Berizzi, F. Dell’acqua, P. Gamba, A. Garzelli, M. Martorella
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引用次数: 6

Abstract

The fractal properties of SAR images of the sea surface are currently studied by many researchers, but definite results have not been derived. We investigate the fractal behavior of SAR images of the sea surface by analyzing both real ERS-1 images and synthesized sea-surface images. These sea surfaces are obtained from a 2D fractal model using model parameters derived from real data measurements from buoys, acquired at the same locations and at the same dates of the ERS-1 passes. The analysis of fractal images is performed by two different fractal approaches and by an algorithm of multifractal analysis. Experimental results and comparisons are presented in terms of fractal dimension estimated both from sea spectra computed from 'in situ' measurements, and from the corresponding true ERS-1 SAR images.
海洋海面SAR图像的分形特征研究
海面SAR图像的分形特性目前得到了许多研究者的研究,但尚未得到明确的结果。通过对ERS-1真实海面图像和合成海面图像的分析,探讨了海面SAR图像的分形行为。这些海面是通过二维分形模型获得的,模型参数来源于ERS-1通过的相同地点和相同日期的浮标的实际数据测量。分形图像的分析采用了两种不同的分形方法和多重分形分析算法。实验结果和比较是根据从“现场”测量计算的海洋光谱和相应的真实ERS-1 SAR图像估计的分形维数。
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