论文部分内容阅读
水是一种特殊的介质 ,在激光水下图像中总存在因水的后向散射引起的散斑噪声。充分利用形态学的不同结构元多方向形态滤波的多分辨率特性 ,以及形态学运算固有的能将大量的复杂图像处理运算转换为基本的逻辑与移位运算的组合来完成的特点 ,提出了一种多方向的形态滤波算法。不仅有效地抑制了因海水后向散射引起的散斑噪声 ,同时保留了激光水下目标图像的几何结构细节特征。实验表明这是一种有效的滤除水下激光图像散斑噪声的快速滤波算法。
Water is a special kind of medium. Speckle noise caused by backscattering of water always exists in the underwater laser image. Taking full advantage of the multi-resolution features of multi-directional morphological filtering of different structural elements in morphology and the characteristic of morphological operations that can convert a large amount of complex image processing operations into basic logic and shift operations, A multi-directional morphological filtering algorithm. Not only the speckle noise caused by the backscattering of the seawater is effectively suppressed, but also the geometrical structure details of the laser underwater target image are preserved. Experiments show that this is an effective fast filtering algorithm for filtering speckle noise of underwater laser images.