Conveying fingerprint minutiae with digital watermarks
First Claim
1. A method of securing an identification document comprising:
- receiving information corresponding to fingerprint minutiae locations;
mapping the fingerprint minutiae locations into a minutiae domain, wherein the minutiae domain provides a relative relationship between the minutiae locations;
transforming the minutiae domain;
scrambling or permuting the transformed minutiae domain; and
embedding the scrambled or permuted transformed minutiae domain in artwork carried by or stored in an identification document.
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Accused Products
Abstract
The present invention relates generally to fingerprinting (i.e., human fingerprints). More specifically the present invention relates to explicitly embedding so-called fingerprint minutiae locations in an identification document via digital watermarking. A relative mapping of the minutiae locations can be transformed, scrambled and combined with a watermark orientation component, and then embedded in a photograph or artwork. The embedded photograph or artwork is printed on, e.g., an identification document. Another aspect of the invention is a matching method used to match a representation of a set of control minutiae locations with a representation of a set of sample minutiae locations.
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Citations
47 Claims
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1. A method of securing an identification document comprising:
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receiving information corresponding to fingerprint minutiae locations;
mapping the fingerprint minutiae locations into a minutiae domain, wherein the minutiae domain provides a relative relationship between the minutiae locations;
transforming the minutiae domain;
scrambling or permuting the transformed minutiae domain; and
embedding the scrambled or permuted transformed minutiae domain in artwork carried by or stored in an identification document. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of securing an identification document comprising:
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receiving a representation of a human fingerprint minutiae location map, the map representing a plurality of relative human fingerprint minutiae locations;
embedding the human fingerprint minutiae location map as a digital watermark component in artwork; and
printing the artwork. - View Dependent Claims (11, 12, 13)
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14. A method of validating an identification document, wherein the identification document includes minutiae information embedded therein in the form of a digital watermark, the minutiae information corresponding to a control minutiae location map, said method comprising:
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decoding the digital watermark to obtain the minutiae information, said decoding comprising at least a transform domain analysis of the minutiae information to determine the control minutiae location map;
receiving a sample minutiae location map corresponding to a sample fingerprint;
determining whether the control minutiae location map corresponds to the sample minutiae location map; and
validating the identification document when the control minutiae location map corresponds with the sample minutiae location map.
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15. A method of correlating a first sample representing relative locations of minutiae points in a first human fingerprint with a second sample representing relative locations of minutiae points in a second human fingerprint, said method comprising:
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determining segment lengths between minutiae points for the first sample;
determining segment lengths between minutiae points for the second sample;
matching segment lengths between the first and second samples;
based on at least matched segment lengths determining which minutiae locations in the first sample correspond to minutiae locations in the second sample. - View Dependent Claims (19)
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16. A method of correlating a first sample representing relative locations of minutiae points in a first human fingerprint with a second sample representing relative locations of minutiae points in a second human fingerprint, said method comprising:
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providing a first representation of the first sample in terms of length of segments between minutiae points and a relative angle of the segments;
providing a second representation of the second sample in terms of length of segments between minutiae points and a relative angle of the segments; and
correlating the first and second representations to determine whether there exists an angle at which the first representation and the second representation correlate within a predetermined acceptance. - View Dependent Claims (17, 18, 47)
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20. A method of generating artwork comprising:
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providing a transform domain specification including a relative relationship of human fingerprint minutiae locations;
transforming the transform domain specification;
scrambling the transformed specification according to a known key; and
embedding the scrambled specification in artwork in the form of a digital watermark component. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of securing an identification document comprising:
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receiving information corresponding to a biometric sample;
transforming the biometric sample to yield a transformed representation of the biometric sample; and
steganographically embedding the transformed representation of the biometric sample in artwork carried by or stored in an identification document. - View Dependent Claims (31, 32, 33, 34, 36)
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35. The method of clam 33, wherein the transforming step includes an inverse Fast Fourier Transform.
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37. A method of generating artwork comprising:
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providing a representation of a relative relationship of fingerprint minutiae locations;
transforming the representation into a different domain; and
embedding the transformed representation in artwork in the form of a digital watermark component. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification