Biometric authentication using gesture
First Claim
1. A non-transitory computer-readable storage medium including computer-executable instructions, which cause, when executed by at least one of a handheld electronic device, the handheld electronic device to perform a method for user authentication, the method comprising:
- acquiring biometric information of a user through a biometric sensor of the handheld electronic device;
capturing, via a camera of the handheld electronic device, an image of the user holding the handheld electronic device at the time of acquiring the biometric information of the user;
processing the image to determine a positional angle comprising a first inclination angle and a second inclination angle of the handheld electronic device at the time of capturing the image,wherein processing the image to determine the positional angle comprises;
1) analyzing the image to recognize eyes of the user,2) estimating a tetragonal shape corresponding to a face of the user based on locations of the eyes on the image, and3) computing a gradient of the tetragonal shape in the image,wherein the first inclination angle is defined between an axis passing a surface of the handheld electronic device and a vertical reference axis perpendicular to a horizontal plane, wherein the second inclination angle is defined between the surface of the handheld electronic device and the horizontal plane,wherein the positional angle comprising the first inclination angle and the second inclination angle of the handheld electronic device at the time of capturing the image is determined based on the gradient of the tetragonal shape computed by processing the captured image rather than values of orientation changes measured by a gyro sensor;
computing a gesture similarity, which comprises comparing the positional angle with registered user gesture information stored in at least one memory;
computing a biometric similarity, which comprises comparing the acquired biometric information with registered user biometric information stored in the at least one memory;
computing a combined similarity, which comprises processing the gesture similarity and the biometric similarity; and
comparing the combined similarity with a predetermined similarity threshold for authentication of the user.
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Abstract
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.
78 Citations
8 Claims
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1. A non-transitory computer-readable storage medium including computer-executable instructions, which cause, when executed by at least one of a handheld electronic device, the handheld electronic device to perform a method for user authentication, the method comprising:
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acquiring biometric information of a user through a biometric sensor of the handheld electronic device; capturing, via a camera of the handheld electronic device, an image of the user holding the handheld electronic device at the time of acquiring the biometric information of the user; processing the image to determine a positional angle comprising a first inclination angle and a second inclination angle of the handheld electronic device at the time of capturing the image, wherein processing the image to determine the positional angle comprises; 1) analyzing the image to recognize eyes of the user, 2) estimating a tetragonal shape corresponding to a face of the user based on locations of the eyes on the image, and 3) computing a gradient of the tetragonal shape in the image, wherein the first inclination angle is defined between an axis passing a surface of the handheld electronic device and a vertical reference axis perpendicular to a horizontal plane, wherein the second inclination angle is defined between the surface of the handheld electronic device and the horizontal plane, wherein the positional angle comprising the first inclination angle and the second inclination angle of the handheld electronic device at the time of capturing the image is determined based on the gradient of the tetragonal shape computed by processing the captured image rather than values of orientation changes measured by a gyro sensor; computing a gesture similarity, which comprises comparing the positional angle with registered user gesture information stored in at least one memory; computing a biometric similarity, which comprises comparing the acquired biometric information with registered user biometric information stored in the at least one memory; computing a combined similarity, which comprises processing the gesture similarity and the biometric similarity; and comparing the combined similarity with a predetermined similarity threshold for authentication of the user. - View Dependent Claims (2, 3)
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4. A user authentication method for a handheld electronic device, the method comprising:
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acquiring biometric information of a user through a biometric sensor of the handheld electronic device; capturing, via a camera of the handheld electronic device, an image of the user holding the handheld electronic device at the time of acquiring the biometric information of the user; processing the image to determine a positional angle comprising a first inclination angle and a second inclination angle of the handheld electronic device at the time of capturing the image, wherein processing the image to determine the positional angle comprises; 1) analyzing the image to recognize eyes of the user, 2) estimating a tetragonal shape corresponding to a face of the user based on locations of the eyes on the image, and 3) computing a gradient of the tetragonal shape in the image, wherein the first inclination angle is defined between an axis passing a surface of the handheld electronic device and a vertical reference axis perpendicular to a horizontal plane, wherein the second inclination angle is defined between the surface of the handheld electronic device and the horizontal plane, wherein the positional angle comprising the first inclination angle and the second inclination angle of the handheld electronic device at the time of capturing the image is determined based on the gradient of the tetragonal shape computed by processing the captured mage rather than values of orientation changes measured by a gyro sensor; computing a gesture similarity, which comprises comparing the positional angle with registered user gesture information stored in at least one memory; computing a biometric similarity, which comprises comparing the acquired biometric information with registered user biometric information stored in the at least one memory; computing a combined similarity, which comprises processing the gesture similarity and the biometric similarity; and comparing the combined similarity with a predetermined similarity threshold for authentication of the user. - View Dependent Claims (5, 6)
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7. A handheld electronic apparatus comprising:
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a camera; a biometric sensor configured to receive biometric information of a user; a memory storing user authentication information; and at least one controller configured to process user authentication biometric information received by the biometric sensor and an image of the user captured by the camera at the time of receiving the biometric information, wherein the at least one controller is configured; to process the image to determine a positional angle comprising a first inclination angle and a second inclination angle of the handheld electronic apparatus at the time of capturing the image, wherein to determine the positional angle, the at least one controller is configured to; 1) analyze the image to recognize eyes of the user, 2) estimate a tetragonal shape corresponding to a face of the user based on locations of the eyes on the image, and 3) compute a gradient of the tetragonal shape in the image, wherein the first inclination angle is defined between an axis passing a surface of the handheld electronic apparatus and a vertical reference axis perpendicular to a horizontal plane, wherein the second inclination angle is defined between the surface of the handheld electronic apparatus and the horizontal plane, wherein the positional angle comprising the first inclination angle and the second inclination angle of the handheld electronic apparatus at the time of capturing the image is determined based on the gradient of the tetragonal shape computed by processing the captured image rather than values of orientation changes measured by a gyro sensor; to compute a gesture similarity, which comprises comparing the positional angle with registered user gesture information stored in at least one memory; to compute a biometric similarity, which comprises comparing the acquired biometric information with registered user biometric information stored in the at least one memory; to compute a combined similarity, which comprises processing the gesture similarity and the biometric similarity; and to compare the combined similarity with a predetermined similarity threshold for authentication of the user. - View Dependent Claims (8)
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Specification