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- 2016
一种具有视点不变性的倾斜影像快速匹配方法
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Abstract:
提出了一种具有视点不变性的倾斜影像快速匹配方法。首先对影像进行预处理，即通过透视投影变换得到纠正影像（近似正射影像），消除影像几何变形、尺度和旋转问题；再对纠正影像提取Harris角点并建立尺度不变特征变换（scale invariant feature transform，SIFT）描述子。匹配时，在保证匹配准确率的同时，为了使得匹配点对分布均匀且提高匹配效率，利用粗略F和H矩阵引导在局部范围内进行显著性匹配，并利用归一化互相关（normalized cross-correlation，NCC）测度约束剔除误匹配点。对三组典型的倾斜影像数据进行实验，结果表明，本文方法得到的匹配点对分布均匀且较为密集，匹配准确率和效率也较高
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