FINGERPRINT IMAGE ACQUIRING DEVICE, FINGERPRINT AUTHENTICATING APPARATUS, FINGERPRINT IMAGE ACQUIRING METHOD, AND FINGERPRINT AUTHENTICATING METHOD
First Claim
1. A fingerprint image acquiring device comprising:
- a fingerprint image input unit to which fingerprint images are input consecutively;
an image correlating unit to correlate a plurality of fingerprint images input from the fingerprint image input unit, the image correlating unit matching the input fingerprint images in position;
a resolution enhancing determining unit to determine whether an area making resolution enhancing possible is present by detecting an area overlapping between fingerprint images as a result of image correlating and estimating similarity between the fingerprint images;
an image synthesizing unit to synthesize the fingerprint images based on a result of the position matching by the image correlating unit; and
a resolution enhancing unit to enhance a resolution of the area making resolution enhancing possible in the fingerprint image, whereina fingerprint image is generated by partially enhancing the fingerprint image input to the fingerprint image input unit in resolution.
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Accused Products
Abstract
A fingerprint image acquiring device includes: a fingerprint image input unit to which fingerprint images are input consecutively; an image correlating unit to correlate a plurality of fingerprint images input from the fingerprint image input unit, the image correlating unit matching the input fingerprint images in position; a resolution enhancing determining unit to determine whether an area making resolution enhancing possible is present by detecting an area overlapping between fingerprint images as a result of image correlating and estimating similarity between the fingerprint images; an image synthesizing unit to synthesize the fingerprint images based on a result of the position matching by the image correlating unit; and a resolution enhancing unit to enhance a resolution of the area making resolution enhancing possible in the fingerprint image, wherein a fingerprint image is generated by partially enhancing the fingerprint image input to the fingerprint image input unit in resolution.
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Citations
18 Claims
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1. A fingerprint image acquiring device comprising:
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a fingerprint image input unit to which fingerprint images are input consecutively; an image correlating unit to correlate a plurality of fingerprint images input from the fingerprint image input unit, the image correlating unit matching the input fingerprint images in position; a resolution enhancing determining unit to determine whether an area making resolution enhancing possible is present by detecting an area overlapping between fingerprint images as a result of image correlating and estimating similarity between the fingerprint images; an image synthesizing unit to synthesize the fingerprint images based on a result of the position matching by the image correlating unit; and a resolution enhancing unit to enhance a resolution of the area making resolution enhancing possible in the fingerprint image, wherein a fingerprint image is generated by partially enhancing the fingerprint image input to the fingerprint image input unit in resolution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. A fingerprint authenticating apparatus comprising:
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a fingerprint image input unit to which fingerprint images are input consecutively; an image correlating unit to match a plurality of fingerprint images in position; a resolution enhancing determining unit to determine whether an area making resolution enhancing possible is present by detecting an area overlapping between fingerprint images as a result of image correlating and estimating similarity between the fingerprint images; an image synthesizing unit to synthesize the fingerprint images based on a result of the position matching by the image correlating unit; a resolution enhancing unit to enhance a resolution of the area making resolution enhancing possible in the fingerprint image; a feature information generating unit to generate feature information from a fingerprint image enhanced in resolution by the resolution enhancing unit; and a fingerprint verification unit to verify acquired feature information with pre-registered feature information. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A fingerprint image acquiring method comprising:
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consecutively taking in fingerprint images; matching a plurality of fingerprint images in position; determining whether an area making resolution enhancing possible is present by detecting an area overlapping between fingerprint images as a result of image correlating and estimating similarity between the fingerprint images; synthesizing the fingerprint images based on a result of the position matching; and enhancing a resolution of the area making resolution enhancing possible in the fingerprint image, wherein a fingerprint image is generated by partially enhancing the consecutively input fingerprint images in resolution.
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16. A fingerprint authenticating method comprising:
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consecutively taking in fingerprint images; matching a plurality of fingerprint images in position; determining whether an area making resolution enhancing possible is present by detecting an area overlapping between fingerprint images as a result of image correlating and estimating similarity between the fingerprint images; synthesizing the fingerprint images based on a result of the position matching; enhancing a resolution of the area making resolution enhancing possible in the fingerprint image; generating feature information from a synthesized image enhanced in resolution; and verifying acquired feature information with pre-registered feature information.
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17. A computer-readable recording medium having recorded thereon a fingerprint image acquiring program to be executed by a computer, the program comprising:
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consecutively taking in fingerprint images; matching a plurality of fingerprint images in position; determining whether an area making resolution enhancing possible is present by detecting an area overlapping between fingerprint images as a result of image correlating and estimating similarity between the fingerprint images; synthesizing the fingerprint images matched in position based on a result of the position matching; and enhancing a resolution of the area making resolution enhancing possible in the fingerprint image, wherein a fingerprint image is generated by partially enhancing the fingerprint images consecutively input by the computer in resolution.
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18. A computer-readable recording medium having recorded thereon a fingerprint authenticating program to be executed by a computer, the program comprising:
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consecutively taking in fingerprint images; matching a plurality of fingerprint images in position; determining whether an area making resolution enhancing possible is present by detecting an area overlapping between fingerprint images as a result of image correlating and estimating similarity between the fingerprint images; synthesizing the fingerprint images matched in position based on a result of the position matching; enhancing a resolution of the area making resolution enhancing possible in the fingerprint image; generating feature information from a synthesized image enhanced in resolution; and verifying acquired feature information with pre-registered feature information.
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Specification