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基于双向邻域过滤策略的图形匹配类遥感图像配准算法

Keywords: 图像配准,图形匹配,遥感图像,伪同构

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Abstract:

针对遥感图像由于较大仿射变换关系、相似图案和多源性等导致图形匹配时出现伪同构现象,提出了一种基于双向邻域过滤策略的图形匹配方法.本方法采用双向邻域的图形特征描述子来表示特征点的邻域关系.当误配点的双向邻域任意顶点在后期迭代中被视为误配点时,将与匹配点集具有稳定双向邻域结构的点恢复至匹配点集,同时剔除伪同构中残留的误配点.通过与RandomSampleConsensus(RANSAC)、GraphingTransformationMatching(GTM)算法以及提出的双向邻域匹配方式比较得出,基于双向邻域过滤策略的匹配方式能够处理空间顺序匹配时存在的伪同构问题,同时获得更高的召回率和匹配率.

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