基于复杂海空背景行均值曲线的海天线定位算法

Sea-sky-line locating algorithm based on complicated sea-sky background row-mean curve

复杂海空背景下红外舰船目标总是出现在海天线附近,因此获取海天线位置能确定目标的潜在区域。利用海天线区域在背景灰度上的渐变特性,提出了一种海天线定位方法,该方法首先运用形态学开运算抑制高频目标和杂波、提取平滑背景;然后采用背景行均值曲线首次突降区间检测算法,定位出一个窄的海天线区域,其中线即为工程误差范围内的近似海天线。实验结果表明,该海天线定位算法准确率高、适应于复杂海天环境。

As the warship target always emerges nearby the sea-sky-line, obtaining the location of sea-sky-line can de termine the target＇s potential area in the complicated sea-sky background. Based on the gray-scale transition character of sea-sky area,we propose a sea-sky-line locating method in this paper. We first adopt the morphological opening op- eration to suppress high frequency target and clutter to extract the smooth background, then, by detecting the first anti climax of the background row-mean curve, we get a narrow region, which is corresponding to the sea-sky area, and take the mid-line of it as the approximate sea-sky-line within engineering tolerance. The experimental results show that our algorithm can successfully locates the sea-sky-line in complicated sea-sky background with high accuracy.