公开(公告)号：US07454042B2

公开(公告)日：2008-11-18

申请号：US10532301

申请日：2003-03-18

申请人： Jae Yeon Lee ,  Yun Koo Chung ,  Jung Soh ,  Byung Tae Chun ,  Ho Sub Yoon ,  Kyu Seo Han ,  Do-Hyung Kim ,  Yongwha Chung

发明人： Jae Yeon Lee ,  Yun Koo Chung ,  Jung Soh ,  Byung Tae Chun ,  Ho Sub Yoon ,  Kyu Seo Han ,  Do-Hyung Kim ,  Yongwha Chung

IPC分类号： G06K9/46

CPC分类号： G06K9/00154

摘要： In an apparatus for online signature verification, a signature data input unit digitalizes a locus of a user signature and reads the locus as a sequence of points. A first and a second pattern transform unit performs a speed equalization and a velocity transform on the signature sequence and generates a first and a second transformed pattern sequence, respectively. A characteristics extraction unit extracts three characteristics vectors from the signature sequence, the first and the second transformed pattern sequence, respectively, to thereby generate the three characteristics vectors. A difference vector estimation unit generates a difference vector. A determination unit determines whether an input signature and the reference signature are signed by a single person.

摘要翻译： 在用于在线签名验证的装置中，签名数据输入单元将用户签名的轨迹数字化，并将该轨迹读取为点序列。 第一和第二图案变换单元对签名序列执行速度均衡和速度变换，并分别产生第一和第二变换图案序列。 特征提取单元从签名序列，第一和第二变换图案序列分别提取三个特征向量，从而生成三个特征向量。 差矢量估计单元产生差矢量。 确定单元确定输入签名和参考签名是否由单个人签名。

公开(公告)号：US20060088194A1

公开(公告)日：2006-04-27

申请号：US10532301

申请日：2003-03-18

申请人： Jae Lee ,  Yun Chung ,  Jung Soh ,  Byung Chun ,  Ho Yoon ,  Kyu Han ,  Do-Hyung Kim ,  Yongwha Chung

发明人： Jae Lee ,  Yun Chung ,  Jung Soh ,  Byung Chun ,  Ho Yoon ,  Kyu Han ,  Do-Hyung Kim ,  Yongwha Chung

IPC分类号： G06K9/00

CPC分类号： G06K9/00154

摘要： In an apparatus for online signature verification, a signature data input unit digitalizes a locus of a user signature and reads the locus as a sequence of points. A first and a second pattern transform unit performs a speed equalization and a velocity transform on the signature sequence and generates a first and a second transformed pattern sequence, respectively. A characteristics extraction unit extracts three characteristics vectors from the signature sequence, the first and the second transformed pattern sequence, respectively, to thereby generate the three characteristics vectors. A difference vector estimation unit generates a difference vector. A determination unit determines whether an input signature and the reference signature are signed by a single person.

摘要翻译： 在用于在线签名验证的装置中，签名数据输入单元将用户签名的轨迹数字化，并将该轨迹读取为点序列。 第一和第二图案变换单元对签名序列执行速度均衡和速度变换，并分别产生第一和第二变换图案序列。 特征提取单元从签名序列，第一和第二变换图案序列分别提取三个特征向量，从而生成三个特征向量。 差矢量估计单元产生差矢量。 确定单元确定输入签名和参考签名是否由单个人签名。

公开(公告)号：US07092555B2

公开(公告)日：2006-08-15

申请号：US10147973

申请日：2002-05-20

申请人： Kyunghee Lee ,  Yongwha Chung ,  Chee Hang Park ,  Hyeran Byun

发明人： Kyunghee Lee ,  Yongwha Chung ,  Chee Hang Park ,  Hyeran Byun

IPC分类号： G06K9/00

CPC分类号： G06K9/00288

摘要： A system for performing face registration and authentication using face information, and a method thereof. A set of readily distinguishable features for each user is selected at a registration step and only the set of features selected at the registration step is used at a face authentication step, whereby memory use according to unnecessary information and amount of data calculation for face authentication can be reduced. Thus, the present system has an advantage in that identity authentication through face authentication can be performed even under restricted environments of a USB token or smart card with limited resources. The present system further has advantages in that authentication performance is improved, as readily distinguishable feature information is used, and the time for face authentication is reduced, as face authentication is performed using the SVM built by using the optimal set of readily distinguishable features at a training step.

公开(公告)号：US20080013804A1

公开(公告)日：2008-01-17

申请号：US11607617

申请日：2006-11-30

申请人： Dae Moon ,  Ki Moon ,  Kyo Chung ,  Sung Sohn ,  Yongwha Chung

发明人： Dae Moon ,  Ki Moon ,  Kyo Chung ,  Sung Sohn ,  Yongwha Chung

IPC分类号： G06K9/00

CPC分类号： G06K9/00006 ,  G06F21/32 ,  G06K9/00885 ,  H04L9/3231 ,  H04L2209/16 ,  H04L2209/34

摘要： Provided is a method and apparatus for authenticating a fingerprint by hiding minutiae, securely storing information on the fingerprint, and authenticating the information on the fingerprint in order to prevent the information on the fingerprint from being reused by an attacker who accesses the information on the fingerprint that is stored in a storage unit. The method for recognizing fingerprint by hiding minutiae of a fingerprint adds fake minutiae information to genuine minutiae information, hides fingerprint information using a polynomial, which is generated based on personal intrinsic information, and stores the fingerprint information, thereby securely protecting the fingerprint information from an external attacker, and preventing the fingerprint information accessed by the attacker from being reused since the attacker cannot know the genuine minutiae.

摘要翻译： 提供了一种通过隐藏细节来认证指纹的方法和装置，安全地存储关于指纹的信息，以及认证关于指纹的信息，以防止指纹信息被访问指纹信息的攻击者重复使用 它被存储在存储单元中。 通过隐藏指纹细节识别指纹的方法将虚假细节信息添加到真实细节信息中，使用基于个人内在信息生成的多项式隐藏指纹信息，并存储指纹信息，从而可靠地保护指纹信息免受 外部攻击者，并防止攻击者访问的指纹信息被重用，因为攻击者无法知道真正的细节。

公开(公告)号：US20090262990A1

公开(公告)日：2009-10-22

申请号：US12325788

申请日：2008-12-01

申请人： Wooyong Choi ,  Kiyoung Moon ,  Sungju Lee ,  Yongwha Chung

发明人： Wooyong Choi ,  Kiyoung Moon ,  Sungju Lee ,  Yongwha Chung

IPC分类号： G06K9/00

CPC分类号： G06F21/32

摘要： Provided is a method for polynomial reconstruction in a fuzzy vault system, which includes receiving a set of matching minutiae to select a minutiae combination to be used for the polynomial reconstruction; generating a simultaneous equation using the selected minutiae combination; determining whether a root of the simultaneous equation exists; and reconstructing the polynomial using the selected minutiae combination when the root of the simultaneous equation exists. The high-speed processing polynomial reconstruction method may perform polynomial reconstruction in real time, without using a separate key of a user, and thus may be applicable to various types of fuzzy vault systems.

摘要翻译： 提供了一种在模糊保险库系统中进行多项式重构的方法，其包括接收一组匹配细节以选择要用于多项式重构的细节组合; 使用所选择的细节组合产生联立方程; 确定是否存在联立方程的根; 并且当存在联立方程的根时，使用所选择的细节组合重建多项式。 高速处理多项式重建方法可以实时地执行多项式重建，而不使用用户的单独密钥，并且因此可以适用于各种类型的模糊保险库系统。

公开(公告)号：US07079670B2

公开(公告)日：2006-07-18

申请号：US10184875

申请日：2002-07-01

申请人： Sung Bum Pan ,  Youn-Hee Gil ,  Dae Sung Moon ,  Yongwha Chung ,  Kyo Il Chung ,  Chee Hang Park

发明人： Sung Bum Pan ,  Youn-Hee Gil ,  Dae Sung Moon ,  Yongwha Chung ,  Kyo Il Chung ,  Chee Hang Park

IPC分类号： G06K9/00

CPC分类号： G07C9/00103 ,  G06K9/00087 ,  G07C9/00087

摘要： In an apparatus for authenticating a user by employing feature points of a fingerprint image of the user, a fingerprint image input circuit scans a fingerprint of a user to be registered to provide a first fingerprint image and a fingerprint of a user to be authenticated to provide a second fingerprint image. A host provides registered feature points data corresponding to the first fingerprint image and target feature points data corresponding to the second fingerprint image. A security token circuit estimates a position difference and a direction difference between pairs of a registered feature point and a target feature point and corrects the two feature points based on the position difference and the direction difference to provide authentication result data.

公开(公告)号：US08290221B2

公开(公告)日：2012-10-16

申请号：US12325788

申请日：2008-12-01

申请人： Wooyong Choi ,  Kiyoung Moon ,  Sungju Lee ,  Yongwha Chung

发明人： Wooyong Choi ,  Kiyoung Moon ,  Sungju Lee ,  Yongwha Chung

IPC分类号： G06K9/00

CPC分类号： G06F21/32

摘要： Provided is a method for polynomial reconstruction in a fuzzy vault system, which includes receiving a set of matching minutiae to select a minutiae combination to be used for the polynomial reconstruction; generating simultaneous equations using the selected minutiae combination; determining whether a root of the simultaneous equations exists; and reconstructing the polynomial using the selected minutiae combination when the root of the simultaneous equations exists. The high-speed processing polynomial reconstruction method may perform polynomial reconstruction in real time, without using a separate key of a user, and thus may be applicable to various types of fuzzy vault systems.

摘要翻译： 提供了一种在模糊保险库系统中进行多项式重构的方法，其包括接收一组匹配细节以选择要用于多项式重构的细节组合; 使用所选择的细节组合产生联立方程; 确定是否存在联立方程的根; 并且当存在联立方程的根时，使用所选择的细节组合重建多项式。 高速处理多项式重建方法可以实时地执行多项式重建，而不使用用户的单独密钥，并且因此可以适用于各种类型的模糊保险库系统。