摘要
研究了复杂海空背景下的红外小目标检测的预处理问题。提出了一种基于小波分解与Hough变换结合的方法,提取海空线,确定小目标的潜在区域。为了进一步抑制目标潜在区域的复杂背景、增强目标,提出一种方向自适应的多级滤波器,使之跟随海空线的角度进行滤波。实验证明,该方法能检测出复杂背景下任意方向的海空线,并有效地抑制目标潜在区域的海空线以及噪声杂波,使目标得到增强。
The pretreatment of the small target detection in infrared image with complicated background of sea and sky is studied. A method based on wavelet transform and Hough transform is adopted to locate the Sea-Sky-line, through which the potential target area could be decided, To suppress the complex background and enhance the small target, a self-adaptive directional multilevel filter is applied to the potential target background, by which the image could be filtered in the direction of the Sea-Sky-line, The experimental result indicates that the proposed method could detect the Sea-Sky-line in any direction; meanwhile it could also effectively suppress the Sea-Sky-line, reduce the noise and enhance the target in the potential target area.
出处
《微计算机信息》
北大核心
2007年第34期248-250,276,共4页
Control & Automation
基金
国家自然科学基金重点项目(60135020)
国防重点预研基金项目(编号不公开)
关键词
小波变换
HOUGH变换
海空线检测
方向自适应的多级滤波
Wavelet transform, Hough transform,Sea-Sky-line detection,self-adaptive directional multilevel filter
