Fujitsu Corporation

Shigefumi Yamada

Takahiro Matsuda

Shoji Suzuki

Takashi Shinzaki

Yukihiro Abiko

Hajime Nada

Yoshihiro Takamatsuya

Makoto Hosoi

Takahiro Aoki

Toshio Endoh

Satoshi Semba

Masahiro Mori

Koichiro Niinuma

Narishige Abe

Takashi Morihara

Tomoaki Matsunami

Ken Kamakura

Junji Takagi

Kazuya Uno

Masayuki Goto

Jun Ikegami

Hidekazu Ito

Makoto Mochizuki

Hidetsugu Uchida

Teruchika Mabuchi

An evaluation device includes: a memory; and a processor coupled to the memory and the processor configured to execute a process, the process comprising: generating a plurality of sets from a first population of biometric data collected from a plurality of users, a number of biometric data of the plurality of sets being smaller than that of the first population, at least a part of the plurality of sets being different from each other; estimating a probability density distribution of similarity degrees of different people's pairs of each of the plurality of sets; calculating a false acceptance rate with respect to each similarity degree threshold on a basis of the probability density distribution, with respect to each of the plurality of sets; and estimating a combined false acceptance rate from a statistic amount of false acceptance rates of the plurality of sets calculated by the calculating.

Evaluation device, evaluation method, and computer-readable non-transitory medium

A sensor acquires the same type of biometric information from plural fingers in association with an ID. A processor generates feature data used for verification from the biometric information, and generates characteristic data used for calculation of similarity between the plural fingers from the biometric information. Next, the processor compares the characteristic data and calculates the similarity between the plural fingers. The processor determines whether the feature data is registrable based on the similarity, and a memory stores the feature data in association with the ID when the feature data is registrable.

Biometric information registration apparatus and biometric information registration method

A biometric authentication method is disclosed. Biometric information is acquired from a pair of portions at right and left of a body. Collation feature data are generated from the biometric information for right and left. Similarity feature data are generated for calculating a similarity between the biometric information for right and left. A similarity score between right and left is calculated by using the similarity feature data. The collation feature data for right and left and the similarity score are registered in a registration database. Collation scores for right and left are calculated by comparing the collation feature data in the registration database, and other collation feature data generated in an authentication. It is determined whether the authentication is successful, by using the collation scores, the similarity score in the registration database, and another similarity score generated in the authentication.

Biometric authentication method, computer-readable recording medium, and biometric authentication apparatus

A biometric authentication system () records, in a storage unit in an associating manner, position information of a feature area on an image of biometric information whose biometric authentication is successful and reference biometric information referred to in the successful biometric authentication, the feature area being specific to a living-body, and detects a feature area that is specific to a living-body from an image of biometric information of an input object to be authenticated, and narrows down the reference biometric information stored in the storage unit to reference biometric information to be compared with the biometric information of the object to be authenticated, based on the degree of similarity between each position information, and authenticates the biometric information of the object to be authenticated by comparing the reference biometric information obtained as a narrowing-down result and the biometric information of the object to be authenticated.

Biometric authentication system, biometric authentication method, and recording medium

A biometric authentication device includes: a biometric sensor that obtains biometric information; a memory; and a circuitry configured to: select an objective user according to density of a predetermined range including a comparison-use part data that is a part of a comparison-use feature data extracted from the biometric information in a class of a registered part data that is a part of a registered feature data; and perform comparing between a registered feature data of a selected objective user and the comparison-use feature data.

Efficient biometric authentication using narrowed biometric data

An authentication apparatus for authenticating using biometric information of a plurality of kinds including first information related to a first body part input into a first information inputting area and second information related to a second body part input into a second information inputting area includes an information existence detecting unit that detects a lack of the second information, a determination information acquiring unit that acquires information for lack determination based on third information related to the second body part input into the first information inputting area, and a pseudo lack determining unit that determines whether the lack is an actual lack or a pseudo lack based on the information for lack determination.

Multi-biometric authentication apparatus, and multi-biometric authentication system

A fingerprint image obtaining unitobtains a fingerprint image of multiple fingers. A vein image obtaining unitobtains a palm vein image. An authentication information DBstores reference vein characteristic information, and a reference direction of a predetermined finger in a reference palm vein image for which the reference vein characteristic information is obtained. A reference obtaining unitdetects a longitudinal direction of a predetermined finger based on the fingerprint image. A position correcting unitcorrects the palm vein image based on the longitudinal direction of the predetermined finger, and the reference direction of the predetermined finger. A vein characteristic information extracting unitobtains vein characteristic information from a corrected palm vein image. A verification processing unitmatches the vein characteristic information obtained with the reference vein characteristic information for authentication.

Biometric authentication device and biometric information processing device

A client terminal acquires an image that includes at least a part of a fingerprint, and detects an orientation of a ridge that forms the fingerprint from the image, and detects a singular point of the fingerprint from the image, and calculates an angle formed, on a circumference of a reference circle whose center is the singular point, by the orientation of the ridge and the direction of a tangent line that comes into contact with the reference circle, and creates narrow down data that is used to narrow down matching data that is used to match the fingerprint by associating the angle with a position on the circumference of the reference circle.

Fingerprint authentication method and fingerprint authentication device

A biometric information processing apparatus includes a biometric sensor configured to acquire biometric information of a first instance, a second instance and a third instance; a processor configured to execute a procedure, the procedure comprising: extracting an authentication feature used for matching from the biometric information of each of the second instance and the third instance; normalizing the relative positions of authentication features of the second instance and the third instance by using the biometric information of the first instance; and extracting a relative feature indicating a relative positional relationship between the authentication features of the second instance and the third instance normalized in the normalizing procedure.

Biometric information processing apparatus, biometric information processing method

A biometric authentication device includes a processor to execute an operation including: obtaining biometric information from a user; creating verification characteristic data from the biometric information; verifying registered characteristic data registered in a storage device with the verification characteristic data and determining whether the user is a true user; permitting execution of re-authentications up to a predetermined number of times when the user is determined to not be the true user; managing the verification characteristic data by storing the verification characteristic data in an existing group or by creating a new group and storing the verification characteristic data therein, when the user is determined to not be the true user; determining whether the user is a false user based on the number of groups; and limiting the execution of re-authentications by the user when the user is determined to be the false user.

Biometric authentication device, biometric authentication system, biometric authentication method, and recording medium

A portable terminal includes a finger sensor that recognizes, in response to contact of a finger, the contact and a movement of the finger; and a conversion unit that converts the movement of the finger recognized by the finger sensor into an input event corresponding to an operation instruction to an application running on the portable terminal. If a period of time from recognition of release of the finger from the finger sensor to recognition of placement of the finger on the finger sensor is less than a predetermined amount of time corresponding to physical limitations of a human, the conversion unit does not convert to the input event the recognition of placement of the finger, and recognition of a movement of the finger until recognition of release of the finger after the recognition of placement of the finger.

Portable terminal and input control method

A computer system checks whether or not an authentication success rate for a registered user shows an over-time reduction based on the history of the results of the previous biometric authentication processes in which the high-speed verification process is executed, when the authentication success rate is determined as showing an over-time reduction for the registered user, the computer system instead executes a precise verification process for verifying input biometric information against registered biometric information to make verification with a higher precision than with the high-speed verification process.

Biometric authentication device and method, computer-readable recording medium recorded with biometric authentication computer program, and computer system

Provided are an authentication device, an authentication system, and an authentication method, which are capable of increasing an authentication rate while suppressing an increase in a processing load. To solve this problem, the authentication device acquires a periodic temporal variation of an authentication rate, using history information stored in an authentication history storage unit storing a previous authentication result as history information, predicting whether or not a future authentication rate is lower than a previous value, based on the temporal variation of the authentication rate, and updates registration data regarding biometric information which has been registered, using input data regarding biometric information input from a user, when it is predicted that a future authentication rate will be lower than a predetermined value.

Authentication device, authentication system, and authentication method

A biometric information processing device includes, a biometric sensor configured to acquire a plurality of different biometric information elements; an authentication feature extracting unit configured to extract an authentication feature for use in authentication for each of the plurality of different biometric information elements acquired by the biometric sensor; a supplemental feature extracting unit configured to extract a supplemental feature relating to the authentication feature for each of the plurality of different biometric information elements; and a combined feature extracting unit configured to extract a combined feature in which a plurality of the supplemental features extracted by the supplemental feature extracting unit are reflected.

Biometric information processing device, biometric information processing method and computer-readable storage medium storing a biometric information processing program

A biometric authentication device includes: a matching data generating unit which generates matching data from at least one biometric image representing a plurality of pieces of biometric information of a user; a mutual biometric information feature amount extraction unit which extracts a mutual biometric information feature amount representing the degree of similarity between two pieces of biometric information of the plurality of pieces of biometric information; a selection unit, which, for each of the first predetermined number of the registered users, computes a first selecting score based on the mutual biometric information feature amounts of the user and the registered users and selects the second predetermined number of registered users in order of decreasing the level of similarity based on the first selecting score of each registered users; and a matching unit which matches the matching data of the selected registered users with the matching data of the user.

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Kawasaki, Japan

Shigefumi Yamada