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：US07711158B2

公开(公告)日：2010-05-04

申请号：US11260005

申请日：2005-10-24

申请人： Do Sung Ahn ,  Sung Bum Pan ,  Kyo Il Chung ,  Ji Hyun Moon ,  Hak Il Kim

发明人： Do Sung Ahn ,  Sung Bum Pan ,  Kyo Il Chung ,  Ji Hyun Moon ,  Hak Il Kim

IPC分类号： G06K9/00

CPC分类号： G06K9/00006 ,  G06K9/036

摘要： A method and apparatus for classifying fingerprint image quality and a fingerprint image recognition system are provided. The method includes dividing a fingerprint image into a plurality of blocks, calculating and vectorizing quality classification parameters with respect to the respective blocks, obtaining quality classification values for the respective blocks by inputting the vectorized quality classification parameters into a trained quality classifier, and selecting a representative value of the quality classification values and determining the representative value as the quality of the fingerprint image. Since the quality of the fingerprint image can be accurately judged, reliability of the fingerprint image recognition system is increased.

摘要翻译： 提供了一种用于分类指纹图像质量的方法和装置以及指纹图像识别系统。 该方法包括：将指纹图像划分为多个块，针对相应的块计算和矢量化质量分类参数，通过将经矢量化的质量分类参数输入到经过训练的质量分类器中，获得各个块的质量分类值，并选择 质量分类值的代表值，并将代表值确定为指纹图像的质量。 由于可以准确地判断指纹图像的质量，所以指纹图像识别系统的可靠性提高。

公开(公告)号：US07359533B2

公开(公告)日：2008-04-15

申请号：US10830212

申请日：2004-04-21

申请人： Dae Sung Moon ,  Min Kim ,  Sung Bum Pan ,  Youngwha Chung ,  Kichul Kim

发明人： Dae Sung Moon ,  Min Kim ,  Sung Bum Pan ,  Youngwha Chung ,  Kichul Kim

IPC分类号： G06K9/00

CPC分类号： G06K9/00087

摘要： Provided are a method and apparatus for identifying a fingerprint. The method uses minutiae points of the fingerprint and includes (a) enrolling a fingerprint of a first user in a first database by extracting n minutiae points from a fingerprint image of the first user; selecting one of the n minutiae points as a reference point; rotating the other minutiae points by a predetermined angle with respect to the reference point; generating a first user table containing information regarding the first user's fingerprint based on geometrical changes of the other minutiae points which are obtained by the rotation; and storing the first user table in the first database; and (b) identifying a fingerprint of a second user by extracting m minutiae points from a fingerprint image of the second user; selecting one of the m minutiae points as a reference point; generating a second user table containing information regarding the second user's fingerprint based on geometric changes of the other minutiae points obtained by rotating the other minutiae points by an angle about the reference point; comparing the second user table with the first user table, and selecting a similar candidate list of user tables (m and n are integers). Accordingly, it is possible to enroll a large amount of information regarding fingerprints in a database using quantization and geometric hashing while using a limited storage memory of a central database. Further, it is possible to accurately identify and detect a user's fingerprint in real time using geometric hashing and parallel processing.

摘要翻译： 提供了用于识别指纹的方法和装置。 该方法使用指纹的细节点，并且（a）通过从第一用户的指纹图像提取n个细节点，在第一数据库中登记第一用户的指纹; 选择n个细节点之一作为参考点; 使其他细节点相对于参考点旋转预定角度; 基于通过旋转获得的其他细节点的几何变化，生成包含关于第一用户的指纹的信息的第一用户表; 以及将所述第一用户表存储在所述第一数据库中; 以及（b）通过从所述第二用户的指纹图像中提取m个细节点来识别第二用户的指纹; 选择其中一个细节点作为参考点; 基于通过使其他细节点旋转相对于参考点的角度而获得的其他细节点的几何变化，生成包含关于第二用户指纹的信息的第二用户表; 将第二用户表与第一用户表进行比较，并且选择用户表的类似候选列表（m和n是整数）。 因此，在使用中央数据库的有限存储存储器的情况下，可以使用量化和几何散列在数据库中注册大量关于指纹的信息。 此外，可以使用几何散列和并行处理来实时地准确地识别和检测用户的指纹。

公开(公告)号：US07853049B2

公开(公告)日：2010-12-14

申请号：US11202874

申请日：2005-08-12

申请人： Yong Jin Lee ,  Kyung Hee Lee ,  Sung Bum Pan

发明人： Yong Jin Lee ,  Kyung Hee Lee ,  Sung Bum Pan

IPC分类号： G06K9/00

CPC分类号： G06K9/00281

摘要： A face feature extraction apparatus and method are provided. The face feature extraction apparatus for used in a two-dimensional (2D) face identification system includes: a local base vector generator generating a plurality of local base vectors to extract features of portions of a face from input 2D face image data of users; a local base vector selector selecting a predetermined number of local base vectors suitable for the face identification from the plurality of local base vectors generated by the local base vector generator; and a local base vector overlapper overlapping the local base vectors selected by the local base vector selector and generating a smaller number of overlapped local base vectors than the selected local base vectors. Thus, 2D face identification system having high face identification rate can be provided.

摘要翻译： 提供一种面部特征提取装置和方法。 用于二维（2D）面部识别系统的面部特征提取装置包括：局部基本向量生成器，生成多个局部基本向量，以从用户的输入2D面部图像数据中提取脸部的部分特征; 本地基矢量选择器，从本地基矢量生成器生成的多个局部基矢量中选择适合于脸部识别的预定数量的局部基矢量; 以及与由本地基矢量选择器选择的本地基矢量重叠的局部基矢量重叠器，并且产生比所选择的局部基矢量更少数量的重叠局部基矢量。 因此，可以提供具有高面部识别率的2D面部识别系统。

公开(公告)号：US20100021018A1

公开(公告)日：2010-01-28

申请号：US11202874

申请日：2005-08-12

申请人： Yong Jin Lee ,  Kyung Hee Lee ,  Sung Bum Pan

发明人： Yong Jin Lee ,  Kyung Hee Lee ,  Sung Bum Pan

IPC分类号： G06K9/00

CPC分类号： G06K9/00281

摘要： A face feature extraction apparatus and method are provided. The face feature extraction apparatus for used in a two-dimensional (2D) face identification system includes: a local base vector generator generating a plurality of local base vectors to extract features of portions of a face from input 2D face image data of users; a local base vector selector selecting a predetermined number of local base vectors suitable for the face identification from the plurality of local base vectors generated by the local base vector generator; and a local base vector overlapper overlapping the local base vectors selected by the local base vector selector and generating a smaller number of overlapped local base vectors than the selected local base vectors. Thus, 2D face identification system having high face identification rate can be provided.

公开(公告)号：US20100092048A1

公开(公告)日：2010-04-15

申请号：US12409589

申请日：2009-03-24

申请人： Sung Bum Pan ,  Sung Jin Lim ,  Yong Wha Chung ,  Han Na Choi

发明人： Sung Bum Pan ,  Sung Jin Lim ,  Yong Wha Chung ,  Han Na Choi

IPC分类号： G06K9/00

CPC分类号： G06K9/00093 ,  G06F21/32

摘要： A fingerprint information storage apparatus includes a fingerprint information generating unit that extracts minutiae information from an authenticated user's fingerprint image and generates fingerprint information by inserting chaff minutiae information into the extracted minutiae information, a fingerprint information distributing unit that classifies the fingerprint information according to the extent that minutiae are distributed relative to the center of the fingerprint and distributively outputs the fingerprint information classified according to the distribution, and a first fingerprint information storage unit and a second fingerprint information storage unit that store the fingerprint information and distributively output according to the distribution, wherein the authenticated user's fingerprint information registered in the first fingerprint information storage unit is partially aligned and input fingerprint information is converted based on the information so that the converted input fingerprint information and the fingerprint information registered in the second fingerprint information storage unit are aligned.

摘要翻译： 指纹信息存储装置包括：指纹信息生成部，从认证用户的指纹图像提取细节信息，并通过将切片细节信息插入到提取的细节信息中来生成指纹信息;指纹信息分发部，根据所述指纹信息的分度 该细节相对于指纹的中心分布，并且分散地输出根据分布分类的指纹信息，以及第一指纹信息存储单元和第二指纹信息存储单元，其存储指纹信息并根据分布进行分布式输出， 其中登记在第一指纹信息存储单元中的经认证的用户的指纹信息被部分地对准，并且基于该信息来转换输入的指纹信息， 对第一指纹信息存储单元中登记的指纹信息进行排列。