知识与财富的链接
序列图像中低信噪比运动弱小目标的实时检测算法,是精确制导系统中的关键算法之一。提出一种图像序列弱小目标实时检测新算法,采用分方向区间的动态规划算法和二值图像航迹关联检测。通过在动态规划能量累加过程中引入方向限制,减小了噪声轨迹能量积累和目标轨迹能量扩散,提高了算法的目标检测能力。对算法的检测性能进行了仿真实验,结果表明该算法能有效检测深空背景下信噪比大于1.8、运动方向任意、速度不大于1像素/帧的多个运动弱小目标。
The real-time detection algorithm of moving dim small targets in image sequences is one of the key algorithms in precise guidance system. A real-time target detection algorithm is proposed, which employs dynamic programming(DP) and track matching algorithm in multi target moving regions in image sequences. After performing DP separately in multi speed-direction regions, noise trajectory energy accumulation and target trajectory divarication decrease. As a result, target enhancements are achieved. Simulational experiments show that low SNR(>1.8) moving targets with arbitrary speed direction and maximum speed of 1 pix/frame can be detected with high probability.
