【摘要】 针对合成孔径雷达(SAR)图像降噪算法中滑动窗的选择问题,提出了同时考虑结构信息和自适应滑动窗的联合降噪算法.联合算法先对局部区域进行自适应增长,然后利用比值模板对得到的滑动窗进行结构检测,最后对结构特征区域进行自适应增长,从而获得完整的结构信息.仿真图像和SAR图像的降噪实验表明,联合降噪算法在有效滤除噪声的同时对边缘纹理等细节信息具有较强的保持作用.更多还原

【Abstract】 In order to choose sliding window correctly in de-speckling algorithm,a combined suppression of speckle is proposed.Adaptive windowing is considered for local region,and edge is detected by ratio masks for each window determined.Complete structural information is obtained by adaptive growing of structural features.De-speckling experiments on simulated and real synthetic aperture radar(SAR) image show that the combined algorithm has a higher capability of noise reduction and fine detail preserving.更多还原