| 基于图像分割的VHFSAR叶簇隐蔽目标差值变化检测 |
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| 引用本文： | 王广学,黄晓涛,周智敏.基于图像分割的VHFSAR叶簇隐蔽目标差值变化检测[J].电子学报,2010,38(9):1969-1974. |
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| 作者姓名： | 王广学 黄晓涛 周智敏 |
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| 作者单位： | 国防科学技术大学电子科学与工程学院超宽带室,湖南长沙 410073 |
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| 基金项目： | 教育部新世纪优秀人才支持计划，国家自然科学基金(No.60972121)国防科大科研计划项目 |
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| 摘 要： | 本文针对甚高频合成孔径雷达(VHF SAR)图像中树林区域后向散射呈现快速起伏的特点,提出了一种基于图像分割的叶簇隐蔽目标差值变化检测方法,该方法首先采用自动多阈值分割算法对参考图像进行分割以降低后向散射起伏对检测性能的影响,而后采用一种新的概率模型对分割后各图像区域的杂波分布分别进行准确估计以进一步提高算法的性能.实验结果表明本文方法较之其它算法具有更优的检测性能.
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| 关 键 词： | 变化检测 叶簇隐蔽目标检测 图像分割 甚高频合成孔径雷达 |
| 收稿时间： | 2009-06-27 |
VHF SAR Difference Change Detection of Target in Foliage Based on Image Segmentation |
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| WANG Guang-xue,HUANG Xiao-tao,ZHOU Zhi-min.VHF SAR Difference Change Detection of Target in Foliage Based on Image Segmentation[J].Acta Electronica Sinica,2010,38(9):1969-1974. |
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| Authors: | WANG Guang-xue HUANG Xiao-tao ZHOU Zhi-min |
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| Affiliation: | School of Electronic Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China |
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| Abstract: | A difference change detection algorithm is proposed to detect foliage-concealed targets based on VHF SAR images.In order to improve detection performance,reference image are firstly segmented to overcome the RCS fluctuation of foliage region.Then a statistic model is proposed.Based on the model,the clutter distributions after segmentation are described exactly and a good detection performance is achieved.Finally,the experimental results show that an obvious performance improvement on detection can be obtained through the algorithm. |
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| Keywords: | change detection foliage-concealed target detection image segmentation very high frequency synthetic aperture radar (VHF SAR) |
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