Patent application number | Description | Published |
20080247614 | BIOMETRIC INFORMATION OBTAINING APPARATUS - The apparatus enables a user to recognize the way he is moving his finger with respect to, for example, a sweep-type fingerprint sensor so that the user can easily and surely learn an appropriate way the finger (body part) should be moved. A velocity detecting means detects a velocity at which the body part moves with respect to a sensor, and an image generating means generates an arbitrary pattern, of which a portion corresponding to a position where the body part is located when the movement velocity is detected is altered according to the detected movement velocity, and the generated pattern is shown on a display. | 10-09-2008 |
20090232368 | AUTHENTICATION APPARATUS - An authentication apparatus is provided. A forgery determination threshold is determined on the basis of two types of parameters, a forgery similarity and a forgery difficulty. If a calculated value for an object under test is lower than or equal to the forgery determination threshold, then, it is determined that the object is a biologic object. Thus, easiness in impersonation with a fake of a biologic object that is easy to forge may be reduced, and a false rejection due to a determination in which a biologic object is erroneously determined as a fake may be reduced. | 09-17-2009 |
20090279742 | IMAGE READING APPARATUS, IMAGE READING PROGRAM, AND IMAGE READING METHOD - An image reading apparatus includes a fingerprint sensor that acquires a plurality of first images obtained by successively reading the portions of a relatively moving object, an extrapolation section that extrapolates the plurality of first images to generate a plurality of second images obtained by extending the image area of the first image, and a relative position detection section that calculates the relative position between the plurality of images or the plurality of second images based on a plurality of images including at least the plurality of first images or the plurality of second images. | 11-12-2009 |
20100002914 | BIOMETRIC INFORMATION READING DEVICE AND BIOMETRIC INFORMATION READING METHOD - A biometric information reading device includes an image capturing unit that sequentially captures a plurality of partial images about biometric information, an image feature extracting unit that extracts an image feature from each of the partial images and a position of the image feature, a matching relative position detecting unit that determines whether a relative distance between two successive partial images among the partial images is equal to or smaller than a threshold value, based on the image feature of an overlapping region between the two successive partial images, and a partial image output determining unit that determines to output at least two successive partial images as one set, determines not to output a partial image that is input after the partial images as the one set when the matching relative position detecting unit determines that a relative distance of the partial image from one of the partial images as the one set is equal to or smaller than the threshold value, and determines to output at least two successive partial images as another set including a partial image that is input after the partial images as the one set when the matching relative position detecting unit determines that a relative distance of the partial image from one of the partial images as the one set is not equal to or smaller than the threshold value. | 01-07-2010 |
20100266169 | BIOMETRIC INFORMATION OBTAINMENT APPARATUS, BIOMETRIC INFORMATION OBTAINMENT METHOD, COMPUTER-READABLE RECORDING MEDIUM ON OR IN WHICH BIOMETRIC INFORMATION OBTAINMENT PROGRAM IS RECORDED, AND BIOMETRIC AUTHENTICATION APPARATUS - A biometric information sensing apparatus, including a width detection device that detects a width of a biometric part in a biometric information image collected by a collection device that collects the biometric information image of the biometric part; a narrowing position detection device that detects a narrowing position of the biometric part in the biometric information image on the basis of the width; an orientation information obtainment device that obtains orientation information related to the biometric part in the biometric information image; and a determination device that determines a collection status of the biometric information image on the basis of the orientation information near the narrowing position. | 10-21-2010 |
20120189170 | BIOMETRIC AUTHENTICATION DEVICE, METHOD OF CONTROLLING BIOMETRIC AUTHENTICATION DEVICE AND NON-TRANSITORY, COMPUTER READABLE STORAGE MEDIUM - A biometric authentication device includes a storage unit that stores a plurality of pieces of reference biometric data, an identification control unit that extracts reference biometric data where a coefficient for determining a similarity to acquired biometric data is greater than or equal to a first threshold value, a similar region extraction unit that obtains coefficients for determining similarities between the plural pieces of extracted reference biometric data, in units of predetermined regions, and extracts a similar region where the coefficient for similarity determination is greater than or equal to a second threshold value when a plurality of pieces of reference biometric data are extracted by the identification control unit, and a judgment unit that weights a coefficient for determining a similarity to a dissimilar region, compared with the coefficient for determining a similarity to the extracted similar region, and judging the degree of similarity. | 07-26-2012 |
20120189171 | BIOMETRIC INFORMATION PROCESSING APPARATUS, BIOMETRIC INFORMATION PROCESSING METHOD, AND BIOMETRIC INFORMATION PROCESSING COMPUTER PROGRAM - A biometric information processing apparatus includes: a biometric information acquiring unit which acquires a user's biometric information and generates a biometric input image representing the biometric information; and a processing unit. The processing unit implements: generating a first intermediate image by applying first image processing to the biometric input image; generating a second intermediate image by applying second image processing to the biometric input image; detecting, from each of the first and second intermediate images, a singular point candidate; calculating a distance between the singular point candidates detected from each of the first and second intermediate images for the same singular point contained in the biometric information; calculating a quality metric for the biometric input image based on the distance; and if the quality metric is not higher than a predefined threshold value, then prompting the user to have the user's biometric information reacquired by the biometric information acquiring unit. | 07-26-2012 |
20120195475 | BIOMETRIC INFORMATION PROCESSING APPARATUS, BIOMETRIC INFORMATION PROCESSING METHOD, AND BIOMETRIC INFORMATION PROCESSING COMPUTER PROGRAM - A biometric information processing apparatus includes: a biometric information acquiring unit which acquires biometric input data representing a user's biometric input information; and a processing unit. The processing unit executes: extracting a feature quantity characterizing a feature of the biometric information from the biometric input information; classifying, based on the extracted feature quantity, the biometric input information into at least one of a plurality of classes categorized according to common features of biometric information, computing a confidence level for each class into which the biometric input information has been classified; judging whether or not a maximum value of the confidence level is larger than a threshold value predefined for the class corresponding to the maximum value among the plurality of classes; and, if the maximum value is not larger than the threshold value, prompting the user to have the user's biometric information reacquired. | 08-02-2012 |
20120250949 | CAPACITIVE SENSOR AND BIOMETRIC IMAGE GENERATING METHOD - A capacitive sensor includes a plurality of electrodes each of which outputs an electrical signal corresponding to a capacitance determined by a distance between a surface of the capacitive sensor and an electrical conductor. The plurality of electrodes include electrodes having a first parasitic capacitance and electrodes having a second parasitic capacitance different from the first parasitic capacitance, and are arranged in a prescribed pattern different than a pattern of biometric information of a body part to be read by the capacitive sensor. | 10-04-2012 |
20130004031 | BIOMETRIC INFORMATION PROCESSING APPARATUS, METHOD, AND RECORDING MEDIUM - A biometric information processing apparatus, a method for processing biometric information, and a biometric information processing program are provided for analyzing biometric information that is obtained by combining and reconstructing two or more captured partial biometric images, and a mismatching region is extracted from the combined biometric image. Then, a mismatching region is excluded from the biometric image, and a proper region suitable for identification is extracted. Accordingly, false rejection or the like may be avoided. Moreover, the reliability of biometric identification may be improved, and the number of times of asking a user to reinput his/her biometric information may be reduced. Hence, the convenience is enhanced. | 01-03-2013 |
20130004032 | IDENTIFICATION APPARATUS, IDENTIFICATION METHOD, AND PROGRAM - An identification apparatus includes a classification unit that determines two or more classes into which input biometric data is classified out of a plurality of classes based on features of the input biometric data, where a plurality of items of registered biometric data have been classified into at least one of the plurality of classes, a calculation unit that calculates similarity between the input biometric data and each item of the registered biometric data registered in each of the two or more classes into which the input biometric data is classified, and an identification unit that identifies data on a user who has entered the input biometric data among the registered biometric data registered in any of the two or more classes into which the input biometric data is classified, based on the similarity to the input biometric data. | 01-03-2013 |
20130142405 | BIOMETRIC AUTHENTICATION DEVICE, BIOMETRIC AUTHENTICATION METHOD AND COMPUTER PROGRAM FOR BIOMETRIC AUTHENTICATION, AND BIOMETRIC INFORMATION REGISTRATION DEVICE - A biometric authentication device including: a biometric information acquiring unit which generates a biometric input image representing user's biometric input information; and a processing unit. The processing unit extracts, for each block obtained by dividing the biometric input image, a local feature representing the geometric feature of the biometric input information; classifies the plurality of blocks into a plurality of groups by blocks with a similar local feature; extracts a second group feature representing feature of biometric input information for each group; calculates the degree of difference between each of registered biometric information and the biometric input information based on a first group feature for each group set for a registered biometric image representing the registered biometric information and the second group feature; selects a prescribed number of registered biometric information based on the degree of the difference; and matches the selected registered biometric information with the biometric input information. | 06-06-2013 |
20130263282 | BIOMETRIC AUTHENTICATION DEVICE, BIOMETRIC AUTHENTICATION SYSTEM, BIOMETRIC AUTHENTICATION METHOD, AND RECORDING MEDIUM - 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. | 10-03-2013 |
20130329967 | BIOMETRIC AUTHENTICATION DEVICE, BIOMETRIC AUTHENTICATION METHOD AND COMPUTER PROGRAM FOR BIOMETRIC AUTHENTICATION - A biometric authentication device including: a biometric information acquiring unit which generates a plurality of partial images, each of the partial images capturing a portion of biometric information of a user different from each other; a correlation value calculation unit which calculates the correlation value between a portion of biometric information represented on one partial image and registered biometric information; a partial similarity update unit which, based on the correlation value for the one partial image and the correlation value for at least one other partial image acquired before the one partial image, updates partial similarity representing the degree of similarity between the registered biometric information and portions of biometric information represented on the one partial image and the at least one other partial image; an authentication unit which authenticates, when the partial similarity is equal to or higher than an authentication judging threshold, the user as the registered user. | 12-12-2013 |
20140016839 | BIOMETRIC AUTHENTICATION DEVICE - A biometric authentication device, inputs biometric information such as a fingerprint, extracts feature information included in the biometric information, calculates the degree of reliability of the biometric information on the basis of the feature information, obtains a classification of the biometric information on the basis of the feature information, calculates the degree of reliability of the obtained classification, determines whether or not to execute an identification process between the input biometric information and biometric information enrolled in a storage unit on the basis of the degree of reliability of the biometric information and of classification, further determines whether or not a re-input process of the biometric information is needed, executes an identification process for the biometric information when it is determined that the identification process is needed, and issues a re-input instruction for the biometric information when it is determined that the re-input process is needed. | 01-16-2014 |
20140020090 | BIOMETRIC AUTHENTICATION SYSTEM, BIOMETRIC AUTHENTICATION METHOD, AND RECORDING MEDIUM - A biometric authentication system ( | 01-16-2014 |
20140301615 | NARROW DOWN DATA CREATING METHOD AND NARROW DOWN DATA CREATING 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. | 10-09-2014 |