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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Despeckling PolSAR Images With a Structure Tensor Filter
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Despeckling PolSAR Images With a Structure Tensor Filter

机译:Descrepling Polsar图像具有结构张滤波器

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摘要

In this letter, we propose a new despeckling filter for fully polarimetric synthetic aperture radar (PolSAR) images defined by 3 x 3 complex Wishart distributions. We first generalize the well-known structure tensor to deal with PolSAR data which allows to efficiently measure the dominant direction and contrast of edges. The generalization includes stochastic distances defined in the space of the Wishart matrices. Then, we embed the formulation into an anisotropic diffusion-like schema to build a filter able to reduce speckle and preserve edges. We evaluate its performance through an innovative experimental setup that also includes Monte Carlo analysis. We compare the results with a state-of-the-art polarimetric filter.
机译:在这封信中,我们提出了一个新的DescreChing滤波器,用于完全偏振的合成孔径雷达(POLSAR)图像由3×3复杂Wishart分布定义。我们首先概括着众所周知的结构张量来处理POLSAR数据,这允许有效地测量边缘的主导方向和对比度。概括包括在Wishart矩阵的空间中定义的随机距离。然后,我们将配方嵌入到各向异性扩散模式中以构建能够减少散斑和保护边缘的过滤器。我们通过创新的实验设置评估其性能,该设置还包括Monte Carlo分析。我们将结果与最先进的偏振滤波器进行比较。

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