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US 8,787,622 B2Granted
Biometric authentication device, biometric authentication method, and recording medium
AssigneeFujitsu Limited
InventorMasaki Watanabe
Life of this patent
Estimating the term…
Abstract
A biometric authentication device and method include extracting movement information representing bending and stretching of an imaging object from a plurality of images obtained, and determining whether or not the imaging object is a biological object, based on the movement information.
Claims15
A biometric authentication device, comprising:
- a memory configured to store a program;
- and
- a processor coupled to the memory and configured to:
- extract movement information representing bending and stretching of an imaging object from a plurality of images obtained from an imaging section, and
- determine whether the imaging object is of a biological object by comparing the movement information extracted with previously generated data characteristic of a biological object, and
- measure a movement of the imaging object using images having distance information representing distances of surface of the imaging object calculated from a position of and strengths of reflected light from the imaging object illuminated by an illuminating section,
- wherein biometric information of the imaging object is authenticated when the determining indicates that the imaging object is a biological object,
- wherein the images having the distance information are a plurality of images having distance information of the imaging object imaged from an open state to a closed state, or from the closed state to the open state, and
- wherein the movement information is information where a geometry model is fitted into an image, the distance information and plurality of images are normalized with respect to the movement of the imaging object, information of a height of the imaging object, or information of a size of the imaging object, and coefficients defining the geometry model are normalized with respect to a time of imaging the imaging object.
6 more elements
A biometric authentication device, comprising:
- a memory configured to store a program;
- and
- a processor coupled to the memory and configured to:
- extract movement information representing bending and stretching of an imaging object from a plurality of images obtained from an imaging section, and
- determine whether the imaging object is of a biological object by comparing the movement information extracted with previously generated data characteristic of a biological object, and
- measure a movement of the imaging object using images having distance information representing distances of surface of the imaging object calculated from a position of and strengths of reflected light from the imaging object illuminated by an illuminating section,
- wherein biometric information of the imaging object is authenticated when the determining indicates that the imaging object is a biological object,
- wherein the images having the distance information are a plurality of images having distance information of the imaging object imaged from an open state to a closed state, or from the closed state to the open state, and
- wherein the movement information is information having a numeral representing a shape of surface of the imaging object, where the distance information and plurality of images are normalized with respect to the movement of the imaging object that is normalized with respect to a time of imaging the imaging object.
6 more elements
A biometric authentication device, comprising:
- a memory configured to store a program;
- and
- a processor coupled to the memory and configured to:
- extract movement information representing bending and stretching of an imaging object from a plurality of images obtained from an imaging section, and
- determine whether the imaging object is of a biological object by comparing the movement information extracted with previously generated data characteristic of a biological object, and
- measure a movement of the imaging object using images having distance information representing distances of surface of the imaging object calculated from a position of and strengths of reflected light from the imaging object illuminated by an illuminating section,
- wherein biometric information of the imaging object is authenticated when the determining indicates that the imaging object is a biological object,
- wherein the images having the distance information are a plurality of images having distance information of the imaging object imaged from an open state to a closed state, or from the closed state to the open state, and
- wherein the movement information is a maximum value of numerals representing shapes of surface of the imaging object normalized with respect to the movement of the imaging object, among the distance information and plurality of images.
6 more elements
A biometric authentication method, comprising:
- imaging an imaging object;
- and
- extracting movement information representing bending and stretching of the imaging object from a plurality of images obtained from the imaging, and
- determining whether the imaging object is of a biological object by comparing the movement information extracted with previously generated data characteristic of a biological object, and
- acquiring movement information of the imaging object includes using images having distance information representing distances of surface of the imaging object calculated from a position of an illuminating section and strengths of reflected light of the imaging object,
- wherein biometric information of the imaging object is authenticated when the determining indicates that the imaging objet is a biological object,
- wherein the images having the distance information are a plurality of images having distance information of the imaging object imaged from an open state to a closed state, or from the closed state to the open state, and
- wherein the movement information used in the determination is information where a geometry model is fitted into an image, the distance information and plurality of images are normalized with respect to the movement of the imaging object, information of the height of the imaging object, or information of the size of the imaging object, and coefficients defining the geometry model are normalized with respect to a time of imaging the imaging object.
5 more elements
A biometric authentication method, comprising:
- imaging an imaging object;
- and
- extracting movement information representing bending and stretching of the imaging object from a plurality of images obtained from the imaging, and
- determining whether the imaging object is of a biological object by comparing the movement information extracted with previously generated data characteristic of a biological object, and
- acquiring movement information of the imaging object includes using images having distance information representing distances of surface of the imaging object calculated from a position of an illuminating section and strengths of reflected light of the imaging object,
- wherein biometric information of the imaging object is authenticated when the determining indicates that the imaging objet is a biological object,
- wherein the images having the distance information are a plurality of images having distance information of the imaging object imaged from an open state to a closed state, or from the closed state to the open state,
- wherein the movement information used in the determination is information where a numeral representing a shape of surface of the imaging object of an image wherein the distance information and plurality of images are normalized with respect to the movement of the imaging object is normalized with respect to a time of imaging the imaging object.
5 more elements
A biometric authentication method, comprising:
- imaging an imaging object;
- and
- extracting movement information representing bending and stretching of the imaging object from a plurality of images obtained from the imaging, and
- determining whether the imaging object is of a biological object by comparing the movement information extracted with previously generated data characteristic of a biological object, and
- acquiring movement information of the imaging object includes using images having distance information representing distances of surface of the imaging object calculated from a position of an illuminating section and strengths of reflected light of the imaging object,
- wherein biometric information of the imaging object is authenticated when the determining indicates that the imaging objet is a biological object,
- wherein the images having the distance information are a plurality of images having distance information of the imaging object imaged from an open state to a closed state, or from the closed state to the open state,
- wherein the movement information used in the determination is a maximum value of numerals representing shapes of surface of the imaging object normalized with respect to the movement of the imaging object, among the distance information and the plurality of images.
5 more elements
Dependencies are inferred from the claim text.