方向小波变换及其在运动弱目标检测中的应用
DIRECTIONAL WAVELET TRANSFORM AND ITS APPLICATION IN MOVING DIM TARGET DETECTION
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摘要: 定义了一种新的小波变换即“方向小波变换”,它不仅保持了传统小波变换良好的时频局部分析能力,还具有良好的方向分析特性.研究了它在运动弱目标检测中的应用,提出一种多尺度的运动弱目标检测方法,其可以充分利用目标的不稳定"面"信息,迅速有效地检测出运动弱目标的轨迹.Abstract: One new kind of wavelet transform in 2-dimension is defined,called directional wavelet trans form.It not only has the ability of fine analysis in time-frequency domain,but also has good directionality. Based on it,one multi-scale algorithm for moving dim targets detection is developed,which can be used to speed the detection for unstable speckle targets.