公开(公告)号：US20120087550A1

公开(公告)日：2012-04-12

申请号：US13378208

申请日：2010-06-17

申请人： Antonius Hermanus Maria Akkermans ,  Sabri Boughorbel ,  Dirk Jeroen Breebaart Breebaart ,  Alphons Antonius Maria Lambertus Bruekers ,  Berk Gokberk ,  Koen Theo Johan De Groot ,  Emile Josephus Carlos Kelkboom ,  Thomas Andreas Maria Kevenaar ,  Aweke Negash Lemma

发明人： Antonius Hermanus Maria Akkermans ,  Sabri Boughorbel ,  Dirk Jeroen Breebaart Breebaart ,  Alphons Antonius Maria Lambertus Bruekers ,  Berk Gokberk ,  Koen Theo Johan De Groot ,  Emile Josephus Carlos Kelkboom ,  Thomas Andreas Maria Kevenaar ,  Aweke Negash Lemma

IPC分类号： G06K9/00

CPC分类号： G06K9/0008 ,  G06K9/00067 ,  G06K9/036 ,  G06K9/629 ,  G06K9/6292

摘要： A basic idea of the present invention is to selectively employ one of at least two different feature extraction processes when generating a biometric template of an individual. An individual offers a physiological property, such as a fingerprint, an iris, an ear, a face, etc., from which biometric data can be derived, to a sensor of an enrolment authority. In the following, the property to be discussed will be fingerprints, even though any suitable biometric property may be used. From the fingerprint, a positional reference point of the biometric data is derived. The derivation of the positional reference point may be accomplished using any appropriate method out of a number of known methods. Such a reference point could be the location of a core, a delta, a weighted average of minutiae coordinates, or alike. Typically, the reference point includes a core of a fingerprint expressed as a three-dimensional coordinate denoted by means of xr, yr, and angle αr. A contribution indicator is calculated for the derived positional reference point, and it is determined whether the derived positional reference point can be considered reliable. Depending on the reliability of the derived reference point, one of the two different feature extraction processes is selected; either the first feature set is extracted using a method which is invariant of the derived reference point, or a method is used taking into account the derived reference point. The better the estimation of the reference point is, the more reliable the reference point-dependent extraction method is. Finally, the biometric template is generated using the extracted first feature set.

摘要翻译： 本发明的基本思想是当生成个体的生物特征模板时，选择性地采用至少两种不同的特征提取过程中的一种。 个体向生物特征提供生物特征，例如指纹，虹膜，耳朵，面部等，从中可以将生物特征数据导出到注册机构的传感器。 在下文中，要讨论的属性将是指纹，即使可以使用任何合适的生物特征属性。 从指纹，导出生物特征数据的位置参考点。 可以使用多种已知方法中的任何适当的方法来实现位置参考点的推导。 这样的参考点可以是核心的位置，三角形，细节坐标的加权平均值，或类似的。 通常，参考点包括表示为由xr，yr和角度αr表示的三维坐标的指纹的核心。 针对导出的位置参考点计算贡献指标，并且确定导出的位置参考点是否可以被认为是可靠的。 根据导出的参考点的可靠性，选择两个不同特征提取过程之一; 使用导出的参考点不变的方法来提取第一特征集，或者使用考虑到导出的参考点的方法。 参考点的估计越好，参考点依赖性提取方法越可靠。 最后，使用提取的第一特征集生成生物特征模板。

公开(公告)号：US08655026B2

公开(公告)日：2014-02-18

申请号：US13378208

申请日：2010-06-17

申请人： Antonius Hermanus Maria Akkermans ,  Sabri Boughorbel ,  Dirk Jeroen Breebaart ,  Alphons Antonius Maria Lambertus Bruekers ,  Berk Gokberk ,  Koen Theo Johan De Groot ,  Emile Josephus Carlos Kelkboom ,  Thomas Andreas Maria Kevenaar ,  Aweke Negash Lemma

发明人： Antonius Hermanus Maria Akkermans ,  Sabri Boughorbel ,  Dirk Jeroen Breebaart ,  Alphons Antonius Maria Lambertus Bruekers ,  Berk Gokberk ,  Koen Theo Johan De Groot ,  Emile Josephus Carlos Kelkboom ,  Thomas Andreas Maria Kevenaar ,  Aweke Negash Lemma

IPC分类号： G06K9/00

CPC分类号： G06K9/0008 ,  G06K9/00067 ,  G06K9/036 ,  G06K9/629 ,  G06K9/6292

摘要： A basic idea of the present invention is to selectively employ one of at least two different feature extraction processes when generating a biometric template of an individual. An individual offers a physiological property, such as a fingerprint, an iris, an ear, a face, etc., from which biometric data can be derived, to a sensor of an enrollment authority. In the following, the property to be discussed will be fingerprints, even though any suitable biometric property may be used. From the fingerprint, a positional reference point of the biometric data is derived. The derivation of the positional reference point may be accomplished using any appropriate method out of a number of known methods. Such a reference point could be the location of a core, a delta, a weighted average of minutiae coordinates, or alike. Typically, the reference point includes a core of a fingerprint expressed as a three-dimensional coordinate denoted by means of xr, yr, and angle αr. A contribution indicator is calculated for the derived positional reference point, and it is determined whether the derived positional reference point can be considered reliable. Depending on the reliability of the derived reference point, one of the two different feature extraction processes is selected; either the first feature set is extracted using a method which is invariant of the derived reference point, or a method is used taking into account the derived reference point. The better the estimation of the reference point is, the more reliable the reference point-dependent extraction method is. Finally, the biometric template is generated using the extracted first feature set.

摘要翻译： 本发明的基本思想是当生成个体的生物特征模板时，选择性地采用至少两种不同的特征提取过程中的一种。 个体向生物特征提供生物特征，例如指纹，虹膜，耳朵，面部等，从中可以将生物特征数据导出到注册机构的传感器。 在下文中，要讨论的属性将是指纹，即使可以使用任何合适的生物特征属性。 从指纹，导出生物特征数据的位置参考点。 可以使用多种已知方法中的任何适当的方法来实现位置参考点的推导。 这样的参考点可以是核心的位置，三角形，细节坐标的加权平均值，或类似的。 通常，参考点包括表示为由xr，yr和角度α表示的三维坐标的指纹核心。 针对导出的位置参考点计算贡献指标，并且确定导出的位置参考点是否可以被认为是可靠的。 根据导出的参考点的可靠性，选择两个不同特征提取过程之一; 使用导出的参考点不变的方法来提取第一特征集，或者使用考虑到导出的参考点的方法。 参考点的估计越好，参考点依赖性提取方法越可靠。 最后，使用提取的第一特征集生成生物特征模板。