应用光学, 2014, 35 (4): 614, 网络出版: 2014-09-15
凝视观测图像空间弱小目标检测方法
Space object detection method for observation image in stare mode
摘要
针对凝视观测模式下光测图像中弱小目标的检测问题, 提出一种多帧频域特征累积的目标检测方法。利用恒星匹配、临帧差分等方法消除背景变化的影响, 通过图像时频域特征分析, 推导出递归形式频域特征累积方程, 并由此检测图像中的弱小目标。实验结果表明采用多帧频域特征累积方法能将图像信噪比提高3倍以上, 有利于检测出弱小目标。
Abstract
Aiming at the problem of tiny object detection in stare observation image sequence, a new method based on frequency feature accumulation was proposed. First, star matching and difference of neighbor frames were used to eliminate background of images, and then by analyzing time-frequency feature, the method for accumulating frequency feature of image was applied in tiny object detection. The experiment shows that the method proposed can increase the signal-noise ratio (SNR) of image by 3 times, and favors tiny object detection.
王鲲鹏, 马超伟, 侯旺, 王东亚. 凝视观测图像空间弱小目标检测方法[J]. 应用光学, 2014, 35(4): 614. Wang Kunpeng, Ma Chaowei, Hou Wang, Wang Dongya. Space object detection method for observation image in stare mode[J]. Journal of Applied Optics, 2014, 35(4): 614.