Two-stage local and global fingerprint matching technique for automated fingerprint verification/identification
    1.
    发明授权
    Two-stage local and global fingerprint matching technique for automated fingerprint verification/identification 有权
    两级本地和全球指纹匹配技术,用于自动指纹验证/识别

    公开(公告)号:US06778685B1

    公开(公告)日:2004-08-17

    申请号:US09611951

    申请日:2000-07-06

    IPC分类号: G06K900

    CPC分类号: G06K9/00087

    摘要: A method for determining a degree of match between a search fingerprint and a reference fingerprint comprises the following steps: a) Extracting at least one first search feature from a first region of said search fingerprint thereby forming a local search feature vector, b) Extracting at least one second search feature from a second region of said search fingerprint thereby forming a global search feature vector, whereby said second region comprises said first region, c) Determining a first similarity degree by comparing said local search feature vector with a local reference feature vector, d) Determining a second similarity degree by comparing said global search feature vector with a global reference feature vector of said reference fingerprint and using said first similarity degree, e) Determining said degree of match from said second similarity degree.

    摘要翻译: 一种用于确定搜索指纹和参考指纹之间的匹配程度的方法包括以下步骤:a)从所述搜索指纹的第一区域提取至少一个第一搜索特征,从而形成本地搜索特征向量,b) 从所述搜索指纹的第二区域起至少一秒的搜索特征,从而形成全局搜索特征向量,由此所述第二区域包括所述第一区域,c)通过将所述局部搜索特征向量与局部参考特征向量进行比较来确定第一相似度 d)通过将所述全局搜索特征向量与所述参考指纹的全局参考特征向量进行比较并使用所述第一相似度来确定第二相似度,e)从所述第二相似度确定所述匹配度。

    Method and device for determining a total minutiae template from a plurality of partial minutiae templates
    3.
    发明授权
    Method and device for determining a total minutiae template from a plurality of partial minutiae templates 有权
    用于从多个部分细节模板中确定总细目模板的方法和装置

    公开(公告)号:US07236617B1

    公开(公告)日:2007-06-26

    申请号:US10257283

    申请日:2000-04-13

    IPC分类号: G06K9/00

    CPC分类号: G06K9/00087 G06K9/00026

    摘要: A reference minutiae template comprising reference minutiae and a first partial minutiae template, which overlaps the reference minutiae template, the first partial minutiae template comprising first minutiae, are selected. The reference minutiae of the reference minutiae template are matched with the first minutiae of the first partial minutiae template. Using the matched minutiae, a transformation function is determined, which describes the relation between the reference minutiae and the first minutiae. The first minutiae, which are located outside the overlapping region, are transformed using the transformation function, thereby generating a new reference template. Furthermore, a second partial minutiae template is selected, which overlaps the new reference minutiae template, the second partial minutiae template comprising second minutiae. The method is repeated iteratively for all partial minutiae templates with the new reference minutiae template as the reference minutiae template of the next iteration, the second partial minutiae template as the first partial minutiae template of the next iteration, thereby generating the total minutiae template.

    摘要翻译: 选择包括参考细节和参考细节模板重叠的第一部分细节模板的参考细节模板,包括第一细节的第一部分细节模板。 参考细节模板的参考细节与第一部分细节模板的第一细节相匹配。 使用匹配的细节,确定转换函数,其描述参考细节与第一细节之间的关系。 位于重叠区域之外的第一细节使用变换函数进行变换,从而生成新的参考模板。 此外,选择第二部分细节模板,其与新的参考细节模板重叠,第二部分细节模板包括第二细节。 对所有部分细节模板进行迭代迭代,使用新的参考细节模板作为下一次迭代的参考细节模板,第二部分细节模板作为下一次迭代的第一部分细节模板,从而生成总细分模板。

    Method for dopant diffusion
    5.
    发明授权
    Method for dopant diffusion 有权
    掺杂剂扩散方法

    公开(公告)号:US07964435B2

    公开(公告)日:2011-06-21

    申请号:US11682999

    申请日:2007-03-07

    IPC分类号: H01L21/00

    CPC分类号: H01L21/223 H01L31/18

    摘要: A method for controlling dopant diffusion is disclosed. Using certain control parameters that are not used in the prior art, the method provides an unprecedented measure of control over the dopant diffusion process. The control parameters include, among others, the size of the diffusion windows in the diffusion mask and the proximity of the diffusion windows to a dopant sink. In some embodiments, the diffusion process is conducted in an epi-reactor.

    摘要翻译: 公开了一种控制掺杂剂扩散的方法。 使用现有技术中未使用的某些控制参数,该方法提供了前所未有的对掺杂剂扩散过程的控制测量。 控制参数包括扩散掩模中的扩散窗口的尺寸和扩散窗口与掺杂剂阱的接近程度。 在一些实施方案中,扩散过程在外延反应器中进行。

    Method for Dopant Diffusion
    8.
    发明申请
    Method for Dopant Diffusion 有权
    掺杂剂扩散方法

    公开(公告)号:US20080220598A1

    公开(公告)日:2008-09-11

    申请号:US11682999

    申请日:2007-03-07

    IPC分类号: H01L21/22

    CPC分类号: H01L21/223 H01L31/18

    摘要: A method for controlling dopant diffusion is disclosed. Using certain control parameters that are not used in the prior art, the method provides an unprecedented measure of control over the dopant diffusion process. The control parameters include, among others, the size of the diffusion windows in the diffusion mask and the proximity of the diffusion windows to a dopant sink. In some embodiments, the diffusion process is conducted in an epi-reactor.

    摘要翻译: 公开了一种控制掺杂剂扩散的方法。 使用现有技术中未使用的某些控制参数,该方法提供了前所未有的对掺杂剂扩散过程的控制测量。 控制参数包括扩散掩模中的扩散窗口的尺寸和扩散窗口与掺杂剂阱的接近程度。 在一些实施方案中,扩散过程在外延反应器中进行。

    Method and device for computer-based processing a template minutia set of a fingerprint and a computer readable storage medium
    9.
    发明授权
    Method and device for computer-based processing a template minutia set of a fingerprint and a computer readable storage medium 失效
    用于基于计算机处理指纹和计算机可读存储介质的模板细节的方法和装置

    公开(公告)号:US07369688B2

    公开(公告)日:2008-05-06

    申请号:US10477050

    申请日:2001-05-09

    CPC分类号: G06K9/00067

    摘要: A template minutia set of a fingerprint comprising template minutiae and a template interest region is provided. Further, an input minutia set comprising input minutiae and an input interest region according to an input fingerprint is provided. The input minutia set is matched with the template minutia set. All matching template/input minutiae are determined. Furthermore, an updated template minutia set is determined dependent on the matching template/input minutiae and the non-matching template/input minutiae, and dependent on whether the template minutiae are inside the input interest region or outside of it and whether the input minutiae are inside the template interest region or outside of it.

    摘要翻译: 提供了包括模板细节和模板兴趣区域的指纹的模板细节集合。 此外,提供包括输入细节和根据输入指纹的输入兴趣区域的输入细节。 输入细节集与模板细节集合匹配。 确定所有匹配的模板/输入细节。 此外,根据匹配模板/输入细节和不匹配模板/输入细节来确定更新的模板细节集,并且取决于模板细节是否在输入兴趣区域内或其外部以及输入细节是否为 在模板兴趣区域内或其外部。