Robust biometric feature extraction with and without reference point
    1.
    发明授权
    Robust biometric feature extraction with and without reference point 有权
    具有和不具有参考点的鲁棒生物特征提取

    公开(公告)号:US08655026B2

    公开(公告)日:2014-02-18

    申请号:US13378208

    申请日:2010-06-17

    IPC分类号: G06K9/00

    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。

    ROBUST BIOMETRIC FEATURE EXTRACTION WITH AND WITHOUT REFERENCE POINT
    2.
    发明申请
    ROBUST BIOMETRIC FEATURE EXTRACTION WITH AND WITHOUT REFERENCE POINT 有权
    具有和没有参考点的稳定的生物特征提取

    公开(公告)号:US20120087550A1

    公开(公告)日:2012-04-12

    申请号:US13378208

    申请日:2010-06-17

    IPC分类号: G06K9/00

    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。

    SUBJECT DETECTION
    3.
    发明申请
    SUBJECT DETECTION 审中-公开
    主体检测

    公开(公告)号:US20120075110A1

    公开(公告)日:2012-03-29

    申请号:US13322680

    申请日:2010-06-08

    IPC分类号: G08B21/00

    CPC分类号: G08B21/0202

    摘要: The application describes a child monitoring system and method for detecting and discriminating between children and adults passing under a sensor that is independent of the position of the sensor in relation to the subject. The system determines a distance to a surface on which a person can stand, and calculates a reference distance from this distance and a desired threshold. When a person enters the sensor range, the distance to the top of the person's head is compared with the reference distance to determine whether the person is an adult or a child. An alert can be provided when a child is detected as opposed to an adult, and alerts can be suppressed if an adult is in the vicinity.

    摘要翻译: 本申请描述了一种儿童监视系统和方法,用于检测和区分通过传感器下方的儿童和成人,该传感器与传感器相对于受试者的位置无关。 系统确定与人可以站立的表面的距离,并计算距离该距离和期望阈值的参考距离。 当人进入传感器范围时,将与人的头部的距离与参考距离进行比较,以确定该人是成年人还是小孩。 当检测到小孩与成人相对时,可以提供警报,如果成年人在附近,可以抑制警报。

    METHOD AND APPARATUS FOR SEARCHING A PLURALITY OF STORED DIGITAL IMAGES
    5.
    发明申请
    METHOD AND APPARATUS FOR SEARCHING A PLURALITY OF STORED DIGITAL IMAGES 审中-公开
    搜索存储数字图像的多项式的方法和装置

    公开(公告)号:US20110029510A1

    公开(公告)日:2011-02-03

    申请号:US12936533

    申请日:2009-04-14

    IPC分类号: G06F17/30

    摘要: A plurality of stored digital images are searched. Images are retrieved in accordance with a search query (step 204). The retrieved images are clustered according to a predetermined characteristic of the content of the image (step208). The clusters are ranked on the basis of a predetermined criterion (step 210). Search results are returned according to the ranked clusters (step 212).

    摘要翻译: 搜索多个存储的数字图像。 根据搜索查询检索图像(步骤204)。 检索到的图像根据图像的内容的预定特性进行聚类(步骤208)。 基于预定标准对集群进行排序(步骤210)。 搜索结果根据排名的集群返回(步骤212)。

    Generating views of medical images
    6.
    发明授权
    Generating views of medical images 有权
    生成医学图像的视图

    公开(公告)号:US08786601B2

    公开(公告)日:2014-07-22

    申请号:US13133407

    申请日:2009-12-15

    CPC分类号: G06T19/00 G06T2210/41

    摘要: A system for generating a view of a medical image comprises an input (1) for receiving information indicative of a suspected diagnosis of a patient. An input (2) for receiving a medical image of the patient. A mapper (3) for mapping the suspected diagnosis of the patient to a set of viewing parameters for viewing the medical image. A view generator (8) for providing a view of the medical image in accordance with the set of viewing parameters. A database (4) for mapping a suspected diagnosis into a set of generic viewing parameters. A transformer (5) for transforming the set of generic viewing parameters into a set of image-specific viewing parameters based on content of the medical image.

    摘要翻译: 用于产生医学图像的视图的系统包括用于接收指示患者的疑似诊断的信息的输入(1)。 一种用于接收患者的医学图像的输入(2)。 用于将患者的疑似诊断映射到用于观看医学图像的一组观察参数的映射器(3)。 一种视图发生器(8),用于根据观看参数的集合提供医学图像的视图。 用于将可疑诊断映射到一组通用查看参数的数据库(4)。 一种变换器(5),用于基于所述医学图像的内容将所述一般观看参数集合变换成一组特定于图像的观看参数。

    GENERATING VIEWS OF MEDICAL IMAGES
    8.
    发明申请
    GENERATING VIEWS OF MEDICAL IMAGES 有权
    产生医学图像的观点

    公开(公告)号:US20120098838A1

    公开(公告)日:2012-04-26

    申请号:US13133407

    申请日:2009-12-15

    IPC分类号: G06T1/00

    CPC分类号: G06T19/00 G06T2210/41

    摘要: A system for generating a view of a medical image comprises an input (1) for receiving information indicative of a suspected diagnosis of a patient. An input (2) for receiving a medical image of the patient. A mapper (3) for mapping the suspected diagnosis of the patient to a set of viewing parameters for viewing the medical image. A view generator (8) for providing a view of the medical image in accordance with the set of viewing parameters. A database (4) for mapping a suspected diagnosis into a set of generic viewing parameters. A transformer (5) for transforming the set of generic viewing parameters into a set of image-specific viewing parameters based on content of the medical image.

    摘要翻译: 用于产生医学图像的视图的系统包括用于接收指示患者的疑似诊断的信息的输入(1)。 一种用于接收患者的医学图像的输入(2)。 用于将患者的疑似诊断映射到用于观看医学图像的一组观察参数的映射器(3)。 一种视图发生器(8),用于根据观看参数的集合提供医学图像的视图。 用于将可疑诊断映射到一组通用查看参数的数据库(4)。 一种变换器(5),用于基于所述医学图像的内容将所述一般观看参数集合变换成一组特定于图像的观看参数。