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双边滤波能够有效光滑合成孔径雷达图像,同时保持边缘信息.最优配置双边滤波参数一直非常困难.本文作者曾提出了一种迭代参数配置方法,具有高精度、高效率的特点,但是该方法会出现迭代错误终止的情况.本文提出了一种改进的参数配置方法,能够确保获得最优折衷配置的参数,并且给出了该方法收敛性的证明.对真实合成孔径雷达图像的实验结果显示,在迭代精度相同的情况下,改进方法不仅能够获得与迭代方法相当的可视效果,而且灰度值近似方差参数具有更高的精度;随着迭代精度的提高,改进方法比迭代方法有更快的收敛速度.
Bilateral filtering can effectively smooth the synthetic aperture radar image and maintain the edge information.It has been very difficult to optimally dispose the bilateral filtering parameters.An iteration parameter configuration method has been proposed by the authors in this paper with the characteristics of high precision and high efficiency, The iterative error is terminated.This paper presents an improved parameter configuration method which can ensure the parameters of the optimal compromise configuration and proves the convergence of this method.Experimental results on the real synthetic aperture radar image show that, When the iterative accuracy is the same, the improved method can not only obtain the visual effect equivalent to the iterative method, but also has the higher accuracy of the approximate variance parameter of the gray value; as the iterative accuracy increases, the improved method is faster than the iterative method Convergence rate.