The research on the object-based method of sea ice classification of high-resolution quad-polarization SAR data
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摘要: 随着高分辨率全极化合成孔径雷达(synthetic aperture radar, SAR)影像的大量出现, 传统分类方法因所得分类结果中包含斑点噪声, 导致分类精度大大降低, 因而利用基于伴生关系的二次分类方法对辽东湾RADARSAT-2卫星的海冰SAR影像进行分类, 并将所得分类结果与专家解译分类结果和经典的基于H-α分解的Wishart监督分类结果进行对比, 证明本方法可以消除斑点噪声的影响, 同时具有较好的视觉效果和较高的分类精度。Abstract: Along with the appearance of a great deal of high-resolution quad-polarization synthetic aperture radar (SAR) images, the traditional classification methods lead to worse results with lower classification precision due to the speckle. Therefore, the object-based method based on the context has been used to classify the types of sea ice of RADARSAT-2 SAR image in the Liaodong Gulf. The classification result is compared with that of professional classification and Wishard supervised classification based on H-α decomposition, It is showed that this method can eliminate the speckle with better visual effect and higher classification precision.
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Key words:
- high-resolution /
- Quad-polarization /
- types of sea ice /
- object-based
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