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面向震害信息提取的多源遥感图像自动配准

DOI: 10.6046/gtzyyg.2013.03.10, PP. 56-60

Keywords: 对数极坐标变换,相位相关,图像配准,震害信息提取

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Abstract:

为了从多源遥感图像中提取震害信息,研究了一种图像自动配准的高精度算法。首先,利用Moravec算子提取图像的特征点,并采用随机抽样一致性(randomsampleconsensus,RANSAC)算法剔除误匹配点;然后,根据特征点对图像进行对数极坐标变换,求得基准图像和待配准图像间的旋转和缩放因子;进行旋转角度和缩放系数补偿后,采用与相位相关的亚像元级算法计算图像间的偏移量;最后,利用插值算法对待配准图像进行重采样,实现待配准图像与基准图像的几何配准。将配准后的震前和震后图像作为分类目标,分别进行基于特征的分类和震害信息提取,并对分类结果进行变化检测。实验结果表明,该算法流程具有较高的鲁棒性与配准精度,适用于多源遥感图像配准,所提取的震害信息能较好地应用于震害评估。

References

[1]  吴金鹿,陈绍炜,孙磊.一种基于互相关匹配的空域目标提取方法[J].科学技术与工程,2011,11(32):7948-7951. Wu J L,Chen S W,Sun L.An airspace object extraction method based on cross-correlation matching[J].Science Technology and Engineering,2011,11(32):7948-7951.
[2]  林茂.基于改进的曲线傅里叶变换图像配准研究[J].计算机仿真,2011,28(10):265-268. Lin M.Improved digital image contour curve Fourier descriptor algorithm[J].Computer Simulation,2011,28(10):265-268.
[3]  詹毅.基于泰勒展开式的图像插值方法[J].计算机工程,2012,38(13):202-204. Zhan Y.Image interpolation method based on Tyler expansion[J].Computer Engineering,2012,38(13):202-204.
[4]  张晓芬.基于偏微分方程的图像配准技术研究[D].河北:华北电力大学,2009:32-39. Zhang X F.Research on image registration technique based on PDE’s[D].Hebei:North China Electric Power University,2009:32-39.
[5]  程有娥.基于角点特征和最大互信息的图像配准[J].计算机系统应用,2012,21(6):186-190. Cheng Y E.Image registration based on mutual information and corner points[J].Computer Systems and Applications,2012,21(6):186-190.
[6]  刘晓龙,李英成.基于多源遥感影像融合的影像匹配技术[J].测绘科学,2007,32(3):59-61. Liu X L,Li Y C.Image matching based on multi-source remote-sensing image fusion[J].Science of Surveying and Mapping,2007,32(3):59-61.
[7]  周剑军,欧阳宁,张彤,等.基于RANSAC的图像拼接方法[J].计算机工程与设计,2009,30(24):5692-5694. Zhou J J,Ouyang N,Zhang T,et al.Image mosaic method based on RANSAC[J].Computer Engineering and Design,2009,30(24):5692-5694.
[8]  雷凯,刘艳滢,王延杰,等.基于特征点的对数极坐标变换图像配准算法[J].光学技术,2007,32(3):435-437. Lei K,Liu Y Y,Wang Y J,et al.Log polar transformation based on feature points for image registration[J].Optical Technique,2007,32(3):435-437.
[9]  刘卫光,崔江涛,周利华.插值和相位相关的图像亚像素配准方法[J].计算机辅助设计与图形学学报,2005,17(6):1273-1277. Liu W G,Cui J T,Zhou L H.Subpixel registration based on interpolation and extension phase correlation[J].Journal of Computer-aided Design and Computer Graphics,2005,17(6):1273-1277.
[10]  贾永红.数字图像处理[M].武汉:武汉大学出版社,2003:182-186. Jia Y H.Digital image processing[M].Wuhan:Wuhan University Press,2003:182-186.

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