The infrared image this paper involved is with sky-sea background conditions, and the targets are isolated bright spot with lack of structure and texture information, and the targets move slowly between the sequence images.

• 本文所涉及红外图像为海空背景，小目标表现在红外图像中为一个孤立的亮斑，强度相对于背景较弱，并且在相邻的图像序列之间的运动速度快于背景，是图像中的高频部分，噪声互不相关，也是图像中的高频部分。