Method and system for biometric recognition
First Claim
Patent Images
1. A system for acquiring iris and face biometric features, the system comprising:
- a depth measurement sensor configured to determine a distance of an image sensor from a subject;
at least one light source; and
the image sensor, the image sensor configured to;
acquire, at a first time instant, a first image comprising a biometric feature of a face of the subject, the face illuminated by light of a first wavelength from the at least one light source set to a first intensity magnitude suitable for acquiring the first image at the determined distance; and
acquire, at a second time instant, a second image comprising a biometric feature of an iris of the subject, the iris illuminated by light of a second wavelength from the at least one light source set to a second intensity magnitude suitable for acquiring the second image at the determined distance, wherein the second time instant is within a predetermined time period of the first time instant sufficient to link the first image and the second image to the same subject.
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Abstract
High quality, high contrast images of an iris and the face of a person are acquired in rapid succession in either sequence by a single sensor and one or more illuminators, preferably within less than one second of each other, by changing the data acquisition settings or illumination settings between each acquisition.
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Citations
20 Claims
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1. A system for acquiring iris and face biometric features, the system comprising:
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a depth measurement sensor configured to determine a distance of an image sensor from a subject; at least one light source; and the image sensor, the image sensor configured to; acquire, at a first time instant, a first image comprising a biometric feature of a face of the subject, the face illuminated by light of a first wavelength from the at least one light source set to a first intensity magnitude suitable for acquiring the first image at the determined distance; and acquire, at a second time instant, a second image comprising a biometric feature of an iris of the subject, the iris illuminated by light of a second wavelength from the at least one light source set to a second intensity magnitude suitable for acquiring the second image at the determined distance, wherein the second time instant is within a predetermined time period of the first time instant sufficient to link the first image and the second image to the same subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for biometric acquisition, the method comprising:
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determining, by a depth measurement sensor, a distance of an image sensor from a subject; acquiring, by the image sensor at a first time instant, a first image comprising a biometric feature of an iris of the subject, the iris illuminated by light of a first wavelength set to a first intensity magnitude suitable for acquiring the first image at the determined distance; and acquiring, by the image sensor at a second time instant, a second image of a biometric feature of a face of the subject, the face illuminated by light of a second wavelength set to a second intensity magnitude suitable for acquiring the second image at the determined distance, wherein the second time instant is within a predetermined time period of the first time instant sufficient to link the first image and the second image to the same subject. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification