| SAR图像小波域多尺度模型 |
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| 引用本文： | 袁小红,朱兆达.SAR图像小波域多尺度模型[J].南京航空航天大学学报,2009,41(4). |
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| 作者姓名： | 袁小红 朱兆达 |
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| 作者单位： | 南京航空航天大学信息科学与技术学院,南京,210016 |
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| 摘 要： | 针对面向ATR应用的SAR图像压缩需要将图像压缩与图像自动分析相结合,本文研究小波域SAR图像MAR模型并应用于图像鉴别.与SAR复图像分辨单元相干平均形成多尺度图像序列建立多尺度模型不同,本文对SAR对数检测图像小波变换形成多尺度图像序列建立MAR模型.通过实例辨识了SAR图像中自然杂波(草地)与人造物(战略目标)模型,应用该模型推导了小波域多分辨率判别,对MSTAR图像鉴别实验验证了模型的有效性.其中db2小波域多分辨率判别鉴别性能好而计算复杂度低.小波域多分辨率判别可用在图像压缩有损量化前鉴别出人造物与自然杂波.
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| 关 键 词： | 合成孔径雷达 多尺度 小波 |
Multiscale Model of SAR Imagery in Wavelet Domain |
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| Yuan Xiaohong,Zhu Zhaoda.Multiscale Model of SAR Imagery in Wavelet Domain[J].Journal of Nanjing University of Aeronautics & Astronautics,2009,41(4). |
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| Authors: | Yuan Xiaohong Zhu Zhaoda |
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| Institution: | College of Information Science and Technology;Nanjing University of Aeronautics & Astronautics;Nanjing;210016;China |
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| Abstract: | Multiscale model of synthetic aperture radar(SAR) imagery in wavelet domain is used to discriminate man-made objects from the natural clutter under consideration of automatic target recognition(ATR)based SAR image compression.It is based on multiresolution sequence through wavelet transform on SAR log-detected image,different from those based on multiresolution sequence through coherent averaging on the complex SAR image.Both natural clutter(grass) and man-made objects(tactical targets) models are identifie... |
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| Keywords: | synthetic aperture radar multiscale wavelet |
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