光学学报, 2003, 23 (5): 541, 网络出版: 2006-06-27
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
散斑噪声抑制 形态滤波算法 相干激光雷达 非线性权重 图像 speckle noise suppressing morphological filters coherent laser radar nonlinear weight imagery
摘要
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。
Abstract
new nonlinear weighted average multidirectional morphological filtering algorithm is proposed, which is used in suppressing speckle noise. The algorithm, otheralgorithm proposed by us, wavelet soft thresholding algorithm and Lee′s filter are applied for suppressing speckle noise in the Impulse Coherent Laser Radar Images, and the their results are compared. The conclusion proved the improvement of the proposed algorithm in suppressing speckle noise under the condition of preserving edges of the image
蒋立辉, 赵春晖, 王骐. 相干激光雷达图像散斑噪声抑制算法[J]. 光学学报, 2003, 23(5): 541. 蒋立辉, 赵春晖, 王骐. Algorithm about Suppressing Speckle Noise in Coherent Laser Radar Imagery[J]. Acta Optica Sinica, 2003, 23(5): 541.