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当成像系统与反舰导弹的运动方向在同一条直线上时,无法采用基于运动轨迹分析的时间滤波算法。针对这一问题,提出了一种基于小波变换的空间滤波与基于像素灰度值变化检测的时间滤波混合算法进行点目标探测。试验用的图像采用实际的背景图像与模拟的点目标信号相结合。试验表明该算法具有良好的探测精度和灵敏度以及低虚警率。
When the imaging system and the anti-ship missile’s movement direction in the same straight line, can not be used based on motion trajectory analysis of time filtering algorithm. Aiming at this problem, a hybrid algorithm of spatial filtering based on wavelet transform and time filtering based on pixel gray value change detection is proposed to detect point targets. The experimental image was combined with the simulated point target signal using the actual background image. Experiments show that the algorithm has good detection accuracy and sensitivity and low false alarm rate.