| 基于小波域扩散滤波的弱小目标检测 |
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| 引用本文： | 刘伟宁.基于小波域扩散滤波的弱小目标检测[J].中国光学与应用光学文摘,2011(5). |
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| 作者姓名： | 刘伟宁 |
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| 作者单位： | 中国科学院长春光学精密机械与物理研究所; |
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| 摘 要： | 分析了基于小波变换进行弱小目标检测的基本思想,利用小波变换的多尺度多分辨率特性,结合小波变换系数的方向特性和扩散滤波扩散方向的可选择性,提出了基于小波域扩散滤波的弱小目标检测算法。采用该算法对不同尺度、不同方向的小波系数分别进行扩散滤波,取得了较好的效果。仿真试验结果表明:该算法能在Gaussian噪声背景和不均匀背景下实现对对比度为2%的微弱目标的检测。
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| 关 键 词： | 弱小目标检测 小波变换 小波域扩散 |
Dim target detection based on wavelet field diffusion filter |
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| LIU Wei-ning.Dim target detection based on wavelet field diffusion filter[J].Chinese Optics and Applied Optics Abstracts,2011(5). |
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| Authors: | LIU Wei-ning |
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| Institution: | LIU Wei-ning (Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China) |
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| Abstract: | Basic principles of dim target detection based on the wavelet transform is analyzed.According to the multi-scale and multi-direction in the wavelet coefficients and combining with the selectable diffusion direction characters,a new method is designed to denoise and detect small targets by the diffusion filter in different directions and different scales of wavelet coefficients,respectively.Combined a anisotropic filter,the algorithm is used to a diffusion filtering experiment for wavelet coefficients.Result... |
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| Keywords: | dim target detection wavelet transform wavelet field diffusion |
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