海天线的检测对于划分海空背景、识别红外舰船目标具有重要作用。本文提出一种基于线段表连通域原理的海天线检测方法。首先去除原始红外图像的强水纹干扰和背景干扰，再通过梯度运算和最大值滤波找出海天线的位置。最后基于线段表连通域原理对二值化后的图像进行检测，以提取海天线的非线性边缘信息。实验表明，该方法的检测精度高，而且当海天线上存在舰船时，不会对舰船轮廓产生影响，克服了 Hough 变换法只能检测出直线的缺点，具有较强的实用性。
The detection of sea-sky-line is of great importance in dividing the sea-sky background and recognizing infrared ship targets. This article provides a sea-sky-line detection algorithm which uses the method of connected area detection base on line segment table. Firstly, wipe off the disturbance of water wave and background, then do the gradient algorithm and max filtering to find the position of sea-sky-line. By means of connected area detection based on the segment table, the non-linear information of the sea-sky line can be obtained after binaryzation. It concludes that our method has a high detecting precision and it will not affect the ships' outline. It overcomes the disadvantage in Hough transform which can only detect straight line and has a strong practicality.
2016,38(8): 108-112 收稿日期：2016-6-15
DOI：10.3404/j.issn.1672-7619.2016.08.023
分类号：TP391.41
基金项目：国家自然科学基金资助项目(61571096)
作者简介：汪劲希(1995-),男,本科,研究方向为光电图像处理。
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