Suprema Inc.

Suprema Hq Inc.

Hochul Shin

Bong Seop Song

Jae Won Lee

Kideok Lee

Jong Man Lee

Hyeonchang Lee

Jinwook Yi

BoGun Park

Young Mook Kang

Jae Hyun Park

Hyun Suk Lee

Daehong Lee

Dae Jin Kwon

There is provided a forged fingerprint identification method. The method comprises obtaining a first fingerprint image for a fingerprint for an input finger of a target user at a first position; obtaining a second fingerprint image for the fingerprint for the input finger of the target user at a second position; and determining whether the fingerprint of the target user is a forgery based on a result of comparison of a result of fingerprint comparison between the first fingerprint image and the second fingerprint image with predetermined threshold conditions.

Forged fingerprint identification method and forged fingerprint identification apparatus, and storage medium storing instructions to perform forged fingerprint identification method

A method for registering a fingerprint of a user through an electronic device, comprising: sensing a fingerprint input into a fingerprint recognition area formed on a display module of the electronic device to capture at least one image of the fingerprint input; determining characteristics of the fingerprint input based on the at least one image of the fingerprint input when the fingerprint input is a rolled fingerprint; and storing the at least one image of the fingerprint input and the characteristics of the fingerprint input as personalized information of the user.

Electronic device and method for registering and authenticating fingerprint

A method of determining a counterfeit fingerprint by a system for determining a counterfeit fingerprint that includes an internal light source and an external light source, comprising: extracting a first fingerprint area of a first fingerprint image obtained from a light signal of the internal light source when a target object's fingerprint comes in contact with a fingerprint contact surface of the system for determining a counterfeit fingerprint; extracting a second fingerprint area of a second fingerprint image obtained from a light signal of the external light source based on the first fingerprint area; and inputting the first fingerprint area and the second fingerprint area into a pre-trained neural network of the system for determining a counterfeit fingerprint to output a result of determining whether the fingerprint is counterfeit.

Device and method for determining counterfeit fingerprints and recording medium including command for performing method of training neural network to determine counterfeit fingerprints

A method for acquiring a fingerprint image through a fingerprint image acquisition apparatus is provided. The method includes recognizing a finger of an user through a sensor included in the apparatus to generate an initial input fingerprint image when the finger contacts with a biometric recognition area of the display unit, acquiring a converted fingerprint image by converting the initial input fingerprint image in a pre-determined manner to reveal a characteristic of a pattern, included within the initial input fingerprint image, corresponding to a pattern signal reflected from at least a part of the display unit. The method further includes selecting a pattern removal fingerprint image, if a learned pattern image is stored in a memory, from the learned pattern image based on similarity. The similarity is calculated between the converted fingerprint image and a converted reference image.

Method, apparatus, and computer-readable storage medium for acquiring fingerprint image

A fingerprint image acquisition method for user authentication is provided. The method comprises determining whether a sensed pressure, which is applied to a fingerprint input window by a finger of a user touching the fingerprint input window, exceeds a predetermined startup pressure, acquiring a comparison image by imaging a fingerprint of the finger when the sensed pressure exceeds the startup pressure, measuring a quality of the comparison image, determining a value of a threshold pressure based on the quality of the comparison image and acquiring an authentication image for the user by capturing an image of the fingerprint of the finger when the sensed pressure exceeds the threshold pressure.

Fingerprint image acquisition apparatus and method for user authentication

There is provided a method for obtaining a user authentication image using pressure sensing. The method includes dividing a pressure sensing area corresponding to a fingerprint input window, with which a biometric feature of a user is brought into contact, into a plurality of partial areas, acquiring a plurality of image frames captured through the fingerprint input window and obtaining, for the partial areas, respective pressure sensing values synchronized with a capturing time of each of the image frames. The method further includes generating the user authentication image from the image frames based on comparison results between the pressure sensing values respectively obtained for the partial areas and one or more predetermined thresholds.

Apparatus and method for obtaining an image for user authentication using pressure sensing

There is provided a biometric authentication method using a portable electronic device. The method includes identifying a gesture of a user to be authenticated through a gesture recognition unit of the portable electronic device and acquiring biometric information of the user through an information input unit of the portable electronic device. The method further includes comparing the identified gesture and the acquired biometric information with an authentication information stored in an information storage unit to perform the biometric authentication of the user, and outputting a result of the biometric authentication.

Biometric authentication using gesture

There is provided a fingerprint authentication method. The method includes a first step of acquiring measurement data for a part of a fingerprint, a second step of calculating a matching rate by comparing the measurement data with at least one of a plurality of registration data, a third step of determining whether the matching rate is equal to or greater than a threshold and whether the measurement data has been previously processed for an authentication, a fourth step of calculating a security level accumulation value based on a result of the third step, and a fifth step of determining whether the security level accumulation value is equal to or greater than a threshold. If NO in the fifth step, processes of the first to fifth steps are repeated. If YES in the fifth step, a success of the authentication is determined and outputted.

Method and device for fingerprint authentication

An apparatus is for irradiating light for obtaining a face image of an authentication target. The apparatus includes a first light source unit having a first glancing angle, a second light source unit having a second glancing angle greater than the first glancing angle, and an external light information acquisition unit configured to acquire environment information on an external light other than the first light source unit and the second light source unit for the authentication target. The apparatus further includes a control unit configured to determine a power ratio of a second driving power supplied to the second light source unit to a first driving power supplied to the first light source unit based on the environment information and control currents to be supplied to the first light source unit and the second light source unit based on the power ratio.

Light irradiation method and light irradiation apparatus

There is provided a method for authenticating a fingerprint. The method includes receiving an inputted fingerprint image; selecting a plurality of comparison target pixels from pixels in the inputted fingerprint image and selecting a plurality of comparison reference pixels from pixels in a pre-stored registered fingerprint image; and determining a similarity of an overlapping area where the inputted fingerprint image overlaps the registered fingerprint image whenever a matching arrangement of each of the comparison target pixels is made with respect to each of the comparison reference pixels. The method further includes, whenever it is determined that the overlapping area is similar, comparing the inputted fingerprint image and the registered fingerprint image within the overlapping area to calculate a correlation score with respect to the overlapping area and authenticating the inputted fingerprint image based on the calculated correlation score.

Method for authenticating fingerprint and authentication apparatus using same

A fingerprint authentication method includes a first step of acquiring partial fingerprint measurement data for a part of a fingerprint, and a second step of calculating a matching rate by comparing the partial fingerprint measurement data with reference comparison data selected among a plurality of partial fingerprint registration data, each partial fingerprint registration data corresponding to a part of a fingerprint. The method further includes a third step of determining whether the matching rate is equal to or greater than an authentication threshold and a fourth step of determining, based on a result in the third step, a success of the authentication, or repeating the second and third steps by selecting new reference comparison data based on whether or not the matching rate is equal to or greater than a preset threshold smaller than the authentication threshold.

A method and apparatus for authenticating a user is disclosed that includes measuring biometric information of the user to create biometric measurement information, determining whether a private key included in a user authentication request signal matches a private key issued in advance to the user, comparing pre-set biometric authentication information for the user with the biometric measurement information, calculating a matching ratio when a match is detected, authenticating the user having provided the biometric information as an authorized user based on a result of comparison of the calculated matching ratio with a pre-determined biometric authentication threshold value, and providing an updated private key to the information processing device based on a result of comparison of the calculated matching ratio with a pre-determined updated threshold value.

Method and apparatus for authenticating user by using information processing device

A biometric image output control method in a biometric authentication device comprises the step of generating a biometric image by imaging an living body to be authenticated; determining whether an imaging environment; if the imaging environment satisfies a predetermined recognition condition, controlling a change rate of a size of a biometric image, a change rate of a focal point of the biometric image and a change rate of a brightness of the biometric image according to a distance to the living body to be authenticated; and if the imaging environment does not satisfy the predetermined recognition condition, overly controlling at least one of the change rate of the size of the biometric image, the change rate of the focal point of the biometric image and the change rate of the brightness of the biometric image according to the distance.

Biometric authentication device and biometric image output control method

In a biometric information management method, a first comparison result is acquired by comparing first biometric input information with registered first biometric authentication information and a second comparison result is acquired by comparing second biometric input information with registered second biometric authentication information. Further, satisfaction or non-satisfaction of a predetermined authentication information compensation condition is determined based on the first comparison result and the second comparison result. If a result of the determining satisfies the authentication information compensation condition, the first biometric authentication information is compensated by using the first biometric input information or the second biometric authentication information is compensated by using the second biometric input information.

Biometric information management method and biometric information management apparatus

In a fingerprint data registering method, a blurred pseudo image is displayed and, when a fingerprint image for authentication registration is acquired, a fingerprint position of the acquired fingerprint image is extracted. A position in the pseudo image, which corresponds to the extracted fingerprint position, is determined. A part of the blurred pseudo image at the determined corresponding position is converted to a clear partial pseudo-image having a higher resolution than that of the blurred pseudo image and the clear partial pseudo-image is displayed. The acquired fingerprint image is registered as an authentication-purpose fingerprint image in association with the converting and outputting process.

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Gyeonggi-do, South Korea

Hochul Shin