摘要
为避免frost滤波因使用同一微调因子带来边缘细节等结构信息的模糊,以及等距等权所带来的盲目平滑现象,对frost滤波算法提出了一种改进方案。该方案综合考虑滤波窗口本身的局域统计特性以及窗口内各像素本身的统计特性来自适应确定微调因子。通过对真实合成孔径雷达图像进行改进算法降噪实验,以等效视数和边缘保持指数两项指标为评价标准,并与不同微调因子的Frost滤波输出结果进行比较,结果表明改进算法比原算法有很大的改进,在边缘保持和去噪方面具有更好的滤波性能。
To avoid the blurring of edges features by using the same parameter and blindfold caused by the same distance and weight in the sliding window when using frost filtering, a modified method of the frost filtering is proposed. This method mainly combines the statistical information of the filtering window and the statistical information of the each pixel of the window to adaptively compute the filter parameter. Then experiment is done to validate this method, the equivalent index and edge preservation index are used to evaluate the smoothing and edge preservation capability. While compared with the frost filtering ofthe different filtering parameters, this modified method has a better performance in terms of speckle noise suppressing and fine details preserving.
出处
《计算机工程与设计》
CSCD
北大核心
2011年第11期3793-3795,3843,共4页
Computer Engineering and Design
