In order to detect and track dim-point targets under the complex background of sky, a high speed method is put, which uses multiwindow, little yardstick, repetitious subtracting and fusing images.

针对复杂天空背景下弱点目标的检测与跟,用多窗口、尺度、次差影融合点目标图像的快速检测与跟方法。