One-dimensional iris signature generation system and method
First Claim
1. A method for identifying a person in a terrorist watchlist, said method comprising:
- acquiring data relating to a portion of a person;
processing the acquired data to obtain a one-dimensional signature of the portion;
comparing the one-dimensional signature of the portion with a plurality of one-dimensional signatures; and
outputting a number of the previously stored one-dimensional signatures that most closely resemble the one-dimensional signature of the portion.
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Accused Products
Abstract
An iris recognition system and method generates a one-dimensional iris signature that is translation, rotation, illumination and scale invariant. It allows users to enroll poor quality iris images that would be rejected by conventional methods. In addition, the system and method generates a list of possible matches instead of only the best match. In this way, the users could potentially identify the iris image by deeper analysis (such as using traditional iris recognition algorithm for more accurate iris identification). Further, the system and method permits more toleration of noise (such as glare introduced by contact lens or eye glasses). Finally, the system and method improves iris identification process computational efficiency. The system stores a one-dimensional signature as opposed to the conventional two-dimensional image.
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Citations
20 Claims
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1. A method for identifying a person in a terrorist watchlist, said method comprising:
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acquiring data relating to a portion of a person;
processing the acquired data to obtain a one-dimensional signature of the portion;
comparing the one-dimensional signature of the portion with a plurality of one-dimensional signatures; and
outputting a number of the previously stored one-dimensional signatures that most closely resemble the one-dimensional signature of the portion. - View Dependent Claims (2, 3, 4)
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5. A system for identifying a feature, said system comprising:
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a data acquisition portion operable to acquire data relating to the feature;
a data processing portion operable to process the acquired data to obtain a one-dimensional signature of the feature;
a comparing portion operable to compare the one-dimensional signature of the feature with a plurality of one-dimensional signatures; and
an output portion operable to output a number of the previously stored one-dimensional signatures that most closely resemble the one-dimensional signature of the feature. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A data processing device comprising:
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a signature generator operable to convert a plurality of two-dimensional polar coordinate image data into a plurality of one-dimensional signatures of the image data, respectively, wherein said signature generator is further operable, to generate a final one-dimensional signature based on the plurality of one-dimensional signatures. - View Dependent Claims (12, 13)
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14. A data processing device comprising:
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a subject receiving portion operable to receive a one-dimensional subject signature corresponding to two-dimensional data of a subject;
a comparing portion operable to compare the one-dimensional subject signature with a plurality of one-dimensional signatures; and
an output portion operable to output a number of the plurality of one-dimensional signatures that most closely resemble the one-dimensional subject signature.
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15. A method of identifying a feature, said method comprising:
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acquiring data relating to the feature;
processing the acquired data to obtain a one-dimensional signature of the feature;
comparing the one-dimensional signature of the feature with a plurality of one-dimensional signatures; and
outputting a number of the previously stored one-dimensional signatures that most closely resemble the one-dimensional signature of the feature. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification