相干激光雷达图像散斑噪声抑制算法

Algorithm about Suppressing Speckle Noise in Coherent Laser Radar Imagery

提出了一种新的用于散斑噪声抑制的非线性加权均值多方向形态滤波算法。运用此算法和先前提出的散斑噪声抑制算法以及小波软阈值算法和Lee滤波算法一并对相干激光雷达图像进行了噪声抑制处理 ,并且对处理的结果进行了比较 ,证明了本算法的进步 ,即在不降低噪声抑制能力的前提下 ,较好地保持了图像边缘。

A new nonlinear weighted average multidirectional morphological filtering algorithm is proposed, which is used for suppressing speckle noise. The algorithm and other algorithm proposed by us, wavelet soft thresholding algorithm and Lees filter, are applied for suppressing speckle noise in the Impulse Coherent Laser Radar Images, and their results are compared. The conclusion proved the advantage of the proposed algorithm in suppressing speckle noise under the condition of preserving edges of the image.