低S NR海天线提取算法

低S NR海天线提取算法

内容简介：针对海天线SNR低且有一定倾角难于提取的问题，提出一种新的海天线提取算法。在预处理阶段，利用Laplacian模板对海面的波纹进行增强，然后使用顺序滤波与数学形态学相结合的方法增加海面波纹的面积与灰度，预处理后增大了海面与天空的灰度差，海天线的SNR提升70%以上；最后，设计了一种斜线查找矩阵，通过对图像行扫描生成该矩阵，矩阵最大值的横纵坐标即为海天线的位置和角度。实测数据的试验结果验证了该方法的有效性且算法运算简单，易于工程应用。创新点在于使用模板运算与形态学相结合的方法提高了海天线SNR并设计了斜线查找矩阵可以简单地定位海天线的位置和角度，减少了计算复杂度。

Abstract：For SNR of sea-sky-line is low and there is a certain inclination so thay are difficult to extract, a new extraction algorithm was proposed. Firstly, the image preprocessing was taken by applying Laplacian template filtering to enhance waves on the surface, followed by order-statistics filters and morphologic closing. After the image preprocessing step, the SNR of sea-sky-line was enhanced. Finally, seeking for the inclined sea-sky-line by using a novel matrix, the matrix should be produced by scanning infrared image horizontally, the maximal element of the matrix identified the position and angle of the sea-sky-line. The experimental result shows that the method can locate sea-sky-line efficiently and correctly, requiring a few computation and be used for engineering applications. Innovations are the use of templates and morphological operators to improve SNR of sea-sky-line and find matrix can simply locate the position and angle of sea-sky-line, reducing the computational complexity.

作者：刘士建, 吴滢跃, 蔡能斌,

关键词：低信噪比, 海天线提取, 算法,