Due to the complicated background of objectives and the speckle noise in the high-resolution SAR images, it is almost impossible to extract roads directly from original remote sensing images.
由于高分辨率SAR图像中，目标背景复杂，同时由于受相干斑噪声的影响，因此很难直接从原始图像数据中提取道路特征。
As the background of objectives in high-resolution SAR images is complicated and also affected by speckle noise, it is almost impossible to extract roads directly from original remote sensing images.
高分辨率SAR图象中目标背景复杂，同时由于受相干斑噪声的影响，很难直接从原始图象数据中提取道路特征。
As the background of objectives in high-resolution SAR images is complicated and also affected by speckle noise, it is almost impossible to extract roads directly from original remote sensing images.
高分辨率SAR图象中目标背景复杂，同时由于受相干斑噪声的影响，很难直接从原始图象数据中提取道路特征。
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