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首页> 外文期刊>Journal of Electronic Science and Technology of China >Simultaneous Speckle Reduction and SAR Image Compression Using Multiwavelet Transform
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Simultaneous Speckle Reduction and SAR Image Compression Using Multiwavelet Transform

机译:使用多小波变换同时减少斑点和SAR图像压缩

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摘要

Synthetic aperture radar (SAR) images are corrupted by multiplicative speckle noise which limits the performance of the classical coder/decoder algorithm in spatial domain. The relatively new transform of multiwavelets can possess desirable features simultaneously, such as orthogonality and symmetry, while scalar wavelets cannot. In this paper we propose a compression scheme combining with speckle noise reduction within the multiwavelet framework. Compared with classical set partitioning in hierarchical trees (SPIHT) algorithm, our method achieves favorable peak signal to noise ratio (PSNR) and superior speckle noise reduction performances.
机译:合成孔径雷达(SAR)图像受到斑点噪声的累加破坏,从而限制了传统编码器/解码器算法在空间领域的性能。多小波的相对较新的变换可以同时具有所需的特征,例如正交性和对称性,而标量小波则不能。在本文中,我们提出了一种在多小波框架内结合减少斑点噪声的压缩方案。与传统的分层树中的集划分(SPIHT)算法相比,我们的方法实现了良好的峰值信噪比(PSNR)和出色的斑点噪声降低性能。

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