Fingerprint matching method and apparatus
    1.
    发明授权
    Fingerprint matching method and apparatus 有权
    指纹匹配方法及装置

    公开(公告)号:US08588484B2

    公开(公告)日:2013-11-19

    申请号:US12666186

    申请日:2008-06-19

    IPC分类号: G06K9/00

    CPC分类号: G06K9/001

    摘要: Exemplary embodiments of method and apparatus for processing the images of fingerprints can be provided. For example, aligned images can be subjected to a tessellation process, whereas each image can be partitioned into a number of regions. Within each region at least one parameter associated with the ridges can be measured and stored. Such exemplary parameter can include, e.g., the prevailing ridge orientation, the average ridge separation and the phase of the ridges. The data can be projected and stored in a multidimensional coordinate system, whereas the representations of any two data can be separated by an amount corresponding to the dissimilarity of these data.

    摘要翻译: 可以提供用于处理指纹图像的方法和装置的示例性实施例。 例如,对齐的图像可以经历细分过程,而每个图像可以被分割成多个区域。 在每个区域内,可以测量和存储与脊相关联的至少一个参数。 这种示例性参数可以包括例如主要的脊取向,脊的平均脊分离和相位。 数据可以被投影并存储在多维坐标系中,而任何两个数据的表示可以被分开对应于这些数据的不相似性的量。

    Modelling
    2.
    发明申请
    Modelling 审中-公开
    造型

    公开(公告)号:US20090052767A1

    公开(公告)日:2009-02-26

    申请号:US11843805

    申请日:2007-08-23

    IPC分类号: G06K9/00

    CPC分类号: G06T15/50 G06T17/20

    摘要: A method of modelling an object (313), comprising capturing images of the object from a plurality of spaced apart cameras (310), creating a three-dimensional model (31) of the object from the images and determining from the model and the images a lighting model (36) describing how the object is lit. Typically, the method comprises the step of estimating the appearance of the object if it were evenly lit; and minimising the entropy in the estimated appearance of the object. Similarly, also disclosed is a method of determining how a two-dimensional image is lit, comprising capturing the image (21), modelling the lighting of the image and removing the effects of the lighting, in which the method comprises calculating the entropy of the image with the effects of the lighting removed and selecting the model such that the entropy is minimised.

    摘要翻译: 一种对物体(313)进行建模的方法,包括从多个间隔开的照相机(310)捕获物体的图像,从图像创建物体的三维模型(31),并从模型和图像中确定 描述对象如何点亮的照明模型(36)。 通常,该方法包括估计对象的均匀照明的外观的步骤; 并最小化物体的估计外观中的熵。 类似地,还公开了一种确定二维图像如何点亮的方法,包括捕获图像(21),对图像的照明进行建模并消除照明的影响,其中该方法包括计算二维图像的熵 图像具有去除的照明效果,并选择模型使熵最小化。

    FINGERPRINT MATCHING METHOD AND APPARATUS
    3.
    发明申请
    FINGERPRINT MATCHING METHOD AND APPARATUS 有权
    指纹匹配方法和装置

    公开(公告)号:US20100266168A1

    公开(公告)日:2010-10-21

    申请号:US12666186

    申请日:2008-06-19

    IPC分类号: G06K9/00

    CPC分类号: G06K9/001

    摘要: Exemplary embodiments of method and apparatus for processing the images of fingerprints can be provided. For example, aligned images can be subjected to a tessellation process, whereas each image can be partitioned into a number of regions. Within each region at least one parameter associated with the ridges can be measured and stored. Such exemplary parameter can include, e.g., the prevailing ridge orientation, the average ridge separation and the phase of the ridges. The data can be projected and stored in a multidimensional coordinate system, whereas the representations of any two data can be separated by an amount corresponding to the dissimilarity of these data.

    摘要翻译: 可以提供用于处理指纹图像的方法和装置的示例性实施例。 例如,对齐的图像可以经历细分过程,而每个图像可以被分割成多个区域。 在每个区域内,可以测量和存储与脊相关联的至少一个参数。 这种示例性参数可以包括例如主要的脊取向,脊的平均脊分离和相位。 数据可以被投影并存储在多维坐标系中,而任何两个数据的表示可以被分开对应于这些数据的不相似性的量。