Abstract: An authentication method implemented by a computer, the authentication method including: extracting a feature amount of each of a plurality of feature points of a living body from imaged data of the living body; calculating a similarity between the feature amount of each of the plurality of feature points and a feature amount stored in a storage unit in association with a feature point that corresponds to each of the plurality of feature points; referring to the storage unit that stores weight information that indicates a weight to be applied to a similarity in association with the similarity to acquire the weight information associated with the calculated similarity; and executing authentication processing on the living body based on a similarity that is newly generated by applying the acquired weight information to the calculated similarity.

Abstract: A control method for a computer to execute a process includes in response to a request to generate a certain processing result, specifying a second process that includes a second instruction different from a first instruction included in a first process that is being executed by an execution unit of an arithmetic processing device, from among a plurality of processes that each generate the certain processing result, based on a relationship between the first process and the plurality of processes; and controlling the execution unit to execute the second process.

Abstract: An information processing apparatus includes: a memory; and a processor coupled to the memory and configured to: extract a plurality of feature points from a biometric image; calculate, for each of the feature points, respective feature vectors including the respective feature points from the biometric image; calculate bit strings by binarizing a value of each of dimensions for each of the calculated feature vectors; attach reliability to each of the calculated bit strings based on stability of the binarizing of the corresponding feature vector; and select a specific number of the bit strings from the calculated bit strings in accordance with values of the reliability.

Abstract: An information processing device includes: a memory; and a processor configured to, store, for each user, narrowing data and confirming data, which are associated with each other, as registration data in the memory, obtain candidates having a fewer number than a number of the users by collating the narrowing data extracted from collating biometric data acquired from a person to be authenticated with the narrowing data of each user in the memory, confirm a specific candidate from the candidates in response to respective pieces of similarity between the confirming data extracted from the collating biometric data and the confirming data of the registration data related to the candidates in the memory, and register the narrowing data extracted from the collating biometric data in the registration data of the specific candidate in a case where the similarity of the specific candidate is equivalent to or more than a threshold value.

Abstract: An information processing apparatus includes: a memory; and a processor coupled to the memory and configured to: extract a plurality of feature points from a biometric image; calculate, for each of the feature points, respective feature vectors including the respective feature points from the biometric image; calculate bit strings by binarizing a value of each of dimensions for each of the calculated feature vectors; attach reliability to each of the calculated bit strings based on stability of the binarizing of the corresponding feature vector; and select a specific number of the bit strings from the calculated bit strings in accordance with values of the reliability.

Abstract: An information processing device includes: a memory; and a processor configured to, store, for each user, narrowing data and confirming data, which are associated with each other, as registration data in the memory, obtain candidates having a fewer number than a number of the users by collating the narrowing data extracted from collating biometric data acquired from a person to be authenticated with the narrowing data of each user in the memory, confirm a specific candidate from the candidates in response to respective pieces of similarity between the confirming data extracted from the collating biometric data and the confirming data of the registration data related to the candidates in the memory, and register the narrowing data extracted from the collating biometric data in the registration data of the specific candidate in a case where the similarity of the specific candidate is equivalent to or more than a threshold value.

Abstract: A biometric authentication device performing an authentication based on a similarity between a biometric image that is an object of comparing and an enrolled biometric image, includes: a storage configured to store a plurality of model images generated by changing a bending angle of a joint of a biometric model and correction information of each of the plurality of model images; a biometric sensor configured to capture a biometric image that is an object of comparing; and a processor configured to execute a process, the process including: determining similarities between the biometric image captured by the biometric sensor and the plurality of model images; selecting a model image based on the similarities; reading correction information corresponding to the model image that is selected, from the storage; and correcting one of the biometric image captured by the biometric sensor or the enrolled biometric image based on the correction information.

Abstract: A vein authentication device converts pixel values of an image, which captures an authentication site including veins, into frequency components. Moreover, the vein authentication device performs filtering of the frequency components, which are obtained by conversion of the pixel values, using a filter stored in a filter storing unit for reducing frequency components, from among low-frequency components having a lower spatial frequency than the spatial frequency of the veins and high-frequency components having a higher spatial frequency than the spatial frequency of the veins, corresponding to surface reflection of an illumination used for the authentication site. Furthermore, the vein authentication device converts the frequency components, which are subjected to filtering, back into an image. Moreover, the vein authentication device extracts vein data representing a vascular pattern of veins from the image obtained by reverse conversion.

Abstract: An image correction apparatus includes a correction amount calculating unit which calculates, in response to a position of a hand on an image, a correction amount for placing the hand to face an imaging unit included in an image acquiring unit for generating the image; and a correcting unit which corrects an estimated coordinate representing a position of a point in a real space corresponding to each pixel included in a region in which the hand is captured in the image in accordance with the correction amount, and projects each of the points after the correction on a corrected image to generate the corrected image.

Abstract: An image correction apparatus includes a correction amount calculating unit which calculates, in response to a position of a hand on an image, a correction amount for placing the hand to face an imaging unit included in an image acquiring unit for generating the image; and a correcting unit which corrects an estimated coordinate representing a position of a point in a real space corresponding to each pixel included in a region in which the hand is captured in the image in accordance with the correction amount, and projects each of the points after the correction on a corrected image to generate the corrected image.

Abstract: A biometric authentication device performing an authentication based on a similarity between a biometric image that is an object of comparing and an enrolled biometric image, includes: a storage configured to store a plurality of model images generated by changing a bending angle of a joint of a biometric model and correction information of each of the plurality of model images; a biometric sensor configured to capture a biometric image that is an object of comparing; and a processor configured to execute a process, the process including: determining similarities between the biometric image captured by the biometric sensor and the plurality of model images; selecting a model image based on the similarities; reading correction information corresponding to the model image that is selected, from the storage; and correcting one of the biometric image captured by the biometric sensor or the enrolled biometric image based on the correction information.

Abstract: A biometric authentication device includes a photographing unit configured to photograph a biological body and acquire biological body information; an authentication unit configured to match registered biological body information that is registered in advance with the biological body information and perform authentication; a posture determination unit configured to determine steadiness of a posture of the biological body based on history of posture information relevant to the posture of the biological body when photographed; and an update determination unit configured to determine to update the registered biological body information when the posture determination unit determines that the posture of the biological body is steady.

Abstract: An imaging device that generates a taken image of an object in an image area by taking an image of each line structuring the image area, includes: an inclination estimate unit that estimates an inclination of the object based on a portion of the taken image corresponding to a first line and a portion of the taken image corresponding to a second line; an image estimate unit that estimates an image of the object to be generated when the image is taken having an inclination estimated by the inclination estimate unit, based on the inclination; and a correction process unit that corrects the taken image based on a result of a comparison between the taken image and the image estimated by the image estimated unit.

Abstract: A biometric authentication apparatus includes a storage unit which stores first shape data representing a shape of biometric information of a registered user's hand with fingers at a first posture and second shape data representing a shape of biometric information of the hand with the fingers at a second posture; a posture specification unit which calculates an index representing a third posture of fingers of a user's hand in a biometric image; a biometric information extraction unit which generates third shape data representing a shape of biometric information of the user's hand in the biometric image; and a correction unit which obtains corrected shape data by correcting the first or the second shape data to cancel a shape difference of the biometric information due to a difference between the third posture and the first or the second posture based on the index for matching.

Abstract: A biometric information processing apparatus includes an aligning unit that aligns a hand image in a first vein image that includes a vein pattern of one hand among a right hand and a left hand as seen from one side of a palm side of the hand or a back side of the hand, with a hand image in a second vein image that includes a vein pattern of the other hand among the right hand and the left hand as seen from the other side among the palm side of the hand or the back side of the hand; and a match determining unit that determines a line element, among a plurality of line elements in the first vein image, that matches any of a plurality of line elements in the second vein image.

Abstract: An image correction apparatus includes a correction amount calculating unit which calculates, in response to a position of a hand on an image, a correction amount for placing the hand to face an imaging unit included in an image acquiring unit for generating the image; and a correcting unit which corrects an estimated coordinate representing a position of a point in a real space corresponding to each pixel included in a region in which the hand is captured in the image in accordance with the correction amount, and projects each of the points after the correction on a corrected image to generate the corrected image.

Abstract: A biometric information processing apparatus includes an aligning unit that aligns a hand image in a first vein image that includes a vein pattern of one hand among a right hand and a left hand as seen from one side of a palm side of the hand or a back side of the hand, with a hand image in a second vein image that includes a vein pattern of the other hand among the right hand and the left hand as seen from the other side among the palm side of the hand or the back side of the hand; and a match determining unit that determines a line element, among a plurality of line elements in the first vein image, that matches any of a plurality of line elements in the second vein image.

Abstract: A biometric authentication device that authenticates a user using biological features of the user, the biometric authentication device includes: an illumination unit configured to illuminate a target which represents the biological features; an image sensor configured to obtain a first captured image by capturing the target illuminated by the illumination unit, and obtain a second captured image by capturing the target not illuminated by the illumination unit; an acquisition unit configured to acquire from a storage unit a mask which has a target area approximating the shape of the target in the first and second captured images obtained by the image sensor; and a detection unit configured to detect light other than illumination light illuminated by the illumination unit based on the mask acquired by the acquisition unit and at least one of the first and second images.

Abstract: A biometric authentication device is provided with an input section for inputting identification information relative to a user, an imaging section which captures images of a hand of the user a plurality of times; a matching section which extracts vein information from each image of the hand captured by the imaging section and collates the vein information with prepared vein data corresponding to the identification information; a judgment data generation section which obtains data for judgment indicating whether the image of the hand is obtained by capturing the images of a living body, on the basis of the image of the hand; and a judgment section which authenticates the user when the result of the matching by the matching section relative to each image of the hand indicates normality and the data for judgment indicates that the image of the hand is obtained by imaging the living body, but which otherwise does not authentication the user.

Abstract: A biometric authentication apparatus includes a storage unit which stores first shape data representing a shape of biometric information of a registered user's hand with fingers at a first posture and second shape data representing a shape of biometric information of the hand with the fingers at a second posture; a posture specification unit which calculates an index representing a third posture of fingers of a user's hand in a biometric image; a biometric information extraction unit which generates third shape data representing a shape of biometric information of the user's hand in the biometric image; and a correction unit which obtains corrected shape data by correcting the first or the second shape data to cancel a shape difference of the biometric information due to a difference between the third posture and the first or the second posture based on the index for matching.