| 一种改进的频域相关法复图像快速配准 |
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| 引用本文： | 崔岑,赵淑清,张剑琦.一种改进的频域相关法复图像快速配准[J].测绘学院学报,2011(3). |
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| 作者姓名： | 崔岑 赵淑清 张剑琦 |
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| 作者单位： | 哈尔滨工业大学(威海)信息科学与工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(60872100) |
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| 摘 要： | InSAR复图像配准是合成孔径雷达3维成像技术的一个关键步骤,要求达到亚像素级的配准精度。在分析了传统相关系数法的基础上,提出了改进的基于频域相关的快速配准算法。该方法分别采用频域相关和线性调频Z变换进行粗配准和精配准;最后利用傅里叶变换的平移性质对辅图像插值重采样。应用该算法对实际数据进行了实验,并从配准时间和精度两方面进行了分析。实验结果证明该方法在保证配准精度的同时,能够有效减少运算量,大大提高运算效率。
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| 关 键 词： | 合成孔径雷达干涉测量 图像配准 频域相关 线性调频Z变换 干涉图 |
Fast Image Registration in SAR Interferometry Based on Frequency-Domain Correlation |
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| CUI Cen,ZHAO Shu-qing,ZHANG Jian-qi.Fast Image Registration in SAR Interferometry Based on Frequency-Domain Correlation[J].Journal of Institute of Surveying and Mapping,2011(3). |
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| Authors: | CUI Cen ZHAO Shu-qing ZHANG Jian-qi |
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| Institution: | CUI Cen,ZHAO Shu-qing,ZHANG Jian-qi(Harbin Institute of Technology at Weihai,School of Information and Engineering,Weihai 264209,China) |
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| Abstract: | The registration for complex images is an important step on processing technology of 3D imaging in interferometric synthetic aperture radar,and it is desired to have the sub-pixel precision of registration.On the basis of analysing the traditional correlation coefficient method,a fast registration method used frequency-domain correlation coefficient and chirp Z transform respectively for coarse and fine registration was proposed,and resampled the interpolated slave image by the translation property of FT fi... |
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| Keywords: | InSAR image registration frequency-domain correlation CZT interferogram |
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