基于边缘相位编码的复杂背景下海天线检测  

Sea Sky Line Detection Based on Edge Phase Encoding in Complicated Background

作　　者：孙熊伟 徐青山 蔡熠 石敏[3] 李松[3] 

机构地区：[1]中国科学院安徽光学精密机械研究所大气成分与光学重点实验室,安徽合肥230031 [2]中国科学技术大学研究生院科学岛分院,安徽合肥230031 [3]海军装备研究院,北京100073

出　　处：《光学学报》2017年第11期86-94,共9页Acta Optica Sinica

基　　金：气象专项课题(GYHY201106002-03)

摘　　要：复杂的海空背景环境中云层、波浪反射、复杂气象条件等会给海天线检测带来困难。针对复杂背景下海天线检测的环境适应性问题,提出了一种基于图像边缘相位编码的海天线检测方法。该算法通过双边滤波原理对图像进行保边滤波处理,以高斯拉普拉斯算子增强边缘响应,配合设计的高斯核方向滤波器完成边缘相位编码的抑噪和增强,然后以相位组分内扫描线的累积响应强度和海天区域内像素强度分布模式差值辨识出最优海天线的位置。实验结果表明,该算法能够有效地检测出不同复杂背景条件下的海天线,具有计算量小和环境适应性强的特点。The complex sea sky background such as clouds, wave reflection, complex weather, will bring difficulties to the sea sky line detection. To solve this problem of environmental adaptability of sea sky line detection in complex background, a sea sky line detection method is proposed based on the image edge phase encoding. The principle of bilateral filter is used to preserve the image edges and filter out the high frequency noise, and the edge response is enhanced by the Laplace of Gaussian. The edge phase encoding is enhanced and the noise of the system is restrained combined with the Gaussian-Kernel directional filter. Then, the optimized sea sky line is detected by the analysis of cumulative response intensity of scan line in phase component and the difference of pixel intensity distribution mode in sea sky region. The experimental results show that the proposed method can effectively detect the sea sky line in different complex backgrounds, and has low computation complexity and strong environmental adaptability.

关 键 词：图像处理 海天线检测 相位滤波器 竞争编码 双边滤波 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]