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基于方向场DFT和角点检测的指纹奇异点定位

, PP. 518-524

Keywords: 图像处理,指纹图像,离散傅里叶变换,角点检测,奇异点

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Abstract:

提出了一种新的基于方向场离散傅里叶变换(DFT,DiscreteFouriertransform)和角点检测的指纹奇异点定位算法。对方向场做DFT变换到频域处理能更好的压制噪声。通过角点提取、基于目标标注的聚类方法来定位指纹图像的奇异点。从方向场的极/零点模型出发,导出了若干新颖的性质,说明了奇异点和角点之间的关系。实验结果表明,奇异点定位精度有所提高,处理时间更短。

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