Analysis of correlation of 2DPalmHash Code and orientation range suitable for transposition

Analysis of correlation of 2DPalmHash Code and orientation range suitable for transposition
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2DPalmHash Code与适合换位的方向范围相关性分析

DOI:
10.1016/j.neucom.2013.10.005
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发表时间:
2014-05
期刊:
影响因子:
6
通讯作者:
Khan, Muhammad Khurram
Khan, Muhammad Khurram
中科院分区:
计算机科学2区
文献类型:
--
作者:
Leng, Lu;Teoh, Andrew Beng Jin;Li, Ming;Khan, Muhammad Khurram

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最近提出了一种基于二维Gabor滤波器提取原始特征的二维掌纹哈希编码方案,用于安全的掌纹验证。然而,2DPalmHash Code中固有的垂直相关性容易受到统计分析攻击。经验证明,2DPalmHash码的垂直相关性通过将被调谐到垂直方向的Gabor特征矩阵转置而被抑制。不幸的是,其运作背后的机制仍然是开放的。本文首先系统地分析和揭示了2DPalmHash编码的水平相关性和垂直相关性。然后,我们发现背后的秘密的Gabor特征矩阵的垂直相关抑制转置。最后,通过相关性分析确定了适合转置的Gabor特征矩阵的方向范围,并通过一系列实验进行了验证。
Recently two-dimensional (2D) PalmHash Code, whose original features were extracted by 2D Gabor filter, was proposed as a cancelable palmprint coding scheme for secure palmprint verification. However, vertical correlation inherently found in 2DPalmHash Code is vulnerable to statistical analysis attack. It was empirically attested that the vertical correlation of 2DPalmHash Code was suppressed by transposing Gabor feature matrices that were tuned to vertical orientation. Unfortunately, the mechanism behind why it works remains open. In this paper, we first systematically analyze and reveal the horizontal and vertical correlations of 2DPalmHash Code. We then uncover the secret behind the transposition of Gabor feature matrices for vertical correlation suppression. Finally, the orientation range of Gabor feature matrices suitable for transposition is determined from the correlation analysis and verified by a series of experiments.
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